diff --git a/.yamllint_defaults.yml b/.yamllint_defaults.yml
index be0b6970..53cfe715 100644
--- a/.yamllint_defaults.yml
+++ b/.yamllint_defaults.yml
@@ -11,6 +11,6 @@ rules:
     max-spaces-inside: 1
     level: error
   truthy:
-    allowed-values: ["yes", "no", "true", "false"]
+    allowed-values: ["true", "false"]
     level: error
   document-start: disable
diff --git a/README.md b/README.md
index e6fa1d6e..e69e70c4 100644
--- a/README.md
+++ b/README.md
@@ -26,24 +26,24 @@ An Ansible role for managing High Availability Clustering.
 
 #### `ha_cluster_enable_repos`
 
-boolean, default: `yes`
+boolean, default: `true`
 
 RHEL and CentOS only, enable repositories contaning needed packages
 
 #### `ha_cluster_cluster_present`
 
-boolean, default: `yes`
+boolean, default: `true`
 
-If set to `yes`, HA cluster will be configured on the hosts according to other
-variables. If set to `no`, all HA Cluster configuration will be purged from
+If set to `true`, HA cluster will be configured on the hosts according to other
+variables. If set to `false`, all HA Cluster configuration will be purged from
 target hosts.
 
 #### `ha_cluster_start_on_boot`
 
-boolean, default: `yes`
+boolean, default: `true`
 
-If set to `yes`, cluster services will be configured to start on boot. If set
-to `no`, cluster services will be configured not to start on boot.
+If set to `true`, cluster services will be configured to start on boot. If set
+to `false`, cluster services will be configured not to start on boot.
 
 #### `ha_cluster_fence_agent_packages`
 
@@ -139,9 +139,9 @@ certificate - key pair.
 
 #### `ha_cluster_regenerate_keys`
 
-boolean, default: `no`
+boolean, default: `false`
 
-If this is set to `yes`, pre-shared keys and TLS certificates will be
+If this is set to `true`, pre-shared keys and TLS certificates will be
 regenerated.
 See also:
 [`ha_cluster_corosync_key_src`](#ha_cluster_corosync_key_src),
@@ -277,7 +277,7 @@ You may take a look at [an example](#advanced-corosync-configuration).
 
 #### `ha_cluster_sbd_enabled`
 
-boolean, default: `no`
+boolean, default: `false`
 
 Defines whether to use SBD.
 
@@ -288,7 +288,7 @@ You may take a look at [an example](#configuring-cluster-to-use-sbd).
 list, default: `[]`
 
 List of name-value dictionaries specifying SBD options. Supported options are:
-`delay-start` (defaults to `no`), `startmode` (defaults to `always`),
+`delay-start` (defaults to `false`), `startmode` (defaults to `always`),
 `timeout-action` (defaults to `flush,reboot`) and `watchdog-timeout` (defaults
 to `5`). See `sbd(8)` man page, section 'Configuration via environment' for
 their description.
@@ -415,7 +415,7 @@ structure, default: no resource clones
 ```yaml
 ha_cluster_resource_clones:
   - resource_id: resource-to-be-cloned
-    promotable: yes
+    promotable: true
     id: custom-clone-id
     meta_attrs:
       - attrs:
@@ -431,7 +431,7 @@ This variable defines resource clones. The items are as follows:
   defined in
   [`ha_cluster_resource_primitives`](#ha_cluster_resource_primitives) or
   [`ha_cluster_resource_groups`](#ha_cluster_resource_groups).
-* `promotable` (optional) - Create a promotable clone, yes or no.
+* `promotable` (optional) - Create a promotable clone, `true` or `false`.
 * `id` (optional) - Custom ID of the clone. If no ID is specified, it will be
   generated. Warning will be emitted if this option is not supported by the
   cluster.
@@ -971,7 +971,7 @@ They are not guides or best practices for configuring a cluster.
   vars:
     ha_cluster_cluster_name: my-new-cluster
     ha_cluster_hacluster_password: password
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
     ha_cluster_sbd_options:
       - name: delay-start
         value: 'no'
@@ -1072,7 +1072,7 @@ They are not guides or best practices for configuring a cluster.
     ha_cluster_resource_clones:
       - resource_id: simple-clone
       - resource_id: clone-with-options
-        promotable: yes
+        promotable: true
         id: custom-clone-id
         meta_attrs:
           - attrs:
@@ -1081,7 +1081,7 @@ They are not guides or best practices for configuring a cluster.
               - name: clone-node-max
                 value: '1'
       - resource_id: cloned-group
-        promotable: yes
+        promotable: true
     ha_cluster_resource_bundles:
       - id: bundle-with-resource
         resource-id: bundled-resource
@@ -1255,7 +1255,7 @@ They are not guides or best practices for configuring a cluster.
 ```yaml
 - hosts: node1 node2
   vars:
-    ha_cluster_cluster_present: no
+    ha_cluster_cluster_present: false
 
   roles:
     - linux-system-roles.ha_cluster
diff --git a/defaults/main.yml b/defaults/main.yml
index 538bf033..028b99f8 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,10 +1,10 @@
 # SPDX-License-Identifier: MIT
 ---
-ha_cluster_enable_repos: yes
+ha_cluster_enable_repos: true
 
-ha_cluster_cluster_present: yes
+ha_cluster_cluster_present: true
 
-ha_cluster_start_on_boot: yes
+ha_cluster_start_on_boot: true
 
 ha_cluster_extra_packages: []
 
@@ -13,7 +13,7 @@ ha_cluster_fence_agent_packages:
   - fence-virt
 
 ha_cluster_hacluster_password: ""
-ha_cluster_regenerate_keys: no
+ha_cluster_regenerate_keys: false
 ha_cluster_corosync_key_src: null
 ha_cluster_pacemaker_key_src: null
 ha_cluster_fence_virt_key_src: null
@@ -26,7 +26,7 @@ ha_cluster_transport: {}
 ha_cluster_totem: {}
 ha_cluster_quorum: {}
 
-ha_cluster_sbd_enabled: no
+ha_cluster_sbd_enabled: false
 ha_cluster_sbd_options: []
 
 ha_cluster_pcs_permission_list:
diff --git a/examples/resources.yml b/examples/resources.yml
index 8ac0b364..c2c0fc23 100644
--- a/examples/resources.yml
+++ b/examples/resources.yml
@@ -68,7 +68,7 @@
     ha_cluster_resource_clones:
       - resource_id: simple-clone
       - resource_id: clone-with-options
-        promotable: yes
+        promotable: true
         id: custom-clone-id
         meta_attrs:
           - attrs:
@@ -77,7 +77,7 @@
               - name: clone-node-max
                 value: '1'
       - resource_id: cloned-group
-        promotable: yes
+        promotable: true
     ha_cluster_resource_bundles:
       - id: bundle-with-resource
         resource-id: bundled-resource
diff --git a/examples/sbd.yml b/examples/sbd.yml
index e54c83d1..0f33923f 100644
--- a/examples/sbd.yml
+++ b/examples/sbd.yml
@@ -4,7 +4,7 @@
   vars:
     ha_cluster_cluster_name: my-new-cluster
     ha_cluster_hacluster_password: password
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
     ha_cluster_sbd_options:
       - name: delay-start
         value: 'no'
diff --git a/tasks/check-and-prepare-role-variables.yml b/tasks/check-and-prepare-role-variables.yml
index 90fa6a24..8e905bf2 100644
--- a/tasks/check-and-prepare-role-variables.yml
+++ b/tasks/check-and-prepare-role-variables.yml
@@ -8,7 +8,7 @@
       when: lookup("vars", item, default="") | length < 1
       loop:
         - ha_cluster_hacluster_password
-      run_once: yes
+      run_once: true
 
     - name: Fail if nodes do not have the same number of SBD devices specified
       fail:
@@ -20,14 +20,12 @@
           | map('extract', hostvars, ['ha_cluster', 'sbd_devices'])
           | map('default', [], true)
           | map('length') | unique | length > 1
-      run_once: yes
+      run_once: true
   when: ha_cluster_cluster_present
 
 - name: Discover cluster node names
   set_fact:
-    __ha_cluster_node_name: "{{
-        ha_cluster.node_name | default(inventory_hostname)
-      }}"
+    __ha_cluster_node_name: "{{ ha_cluster.node_name | d(inventory_hostname) }}"
 
 - name: Collect cluster node names
   set_fact:
@@ -47,7 +45,7 @@
     # - qdevice is not used
     __ha_cluster_sbd_needs_atb: "{{
         ha_cluster_sbd_enabled
-        and not ha_cluster.sbd_devices | default([])
+        and not ha_cluster.sbd_devices | d([])
         and __ha_cluster_all_node_names | length is even
         and not __ha_cluster_qdevice_in_use
       }}"
@@ -57,6 +55,6 @@
     msg: Cannot set auto_tie_breaker to disabled when SBD needs it to be enabled
   when:
     - __ha_cluster_sbd_needs_atb | bool
-    - ha_cluster_quorum.options | default([])
+    - ha_cluster_quorum.options | d([])
       | selectattr('name', 'match', '^auto_tie_breaker$')
       | map(attribute='value') | select('in', ['0', 0]) | list | length > 0
diff --git a/tasks/cluster-setup-pcs-0.10.yml b/tasks/cluster-setup-pcs-0.10.yml
index 078bf7b2..9cdc605f 100644
--- a/tasks/cluster-setup-pcs-0.10.yml
+++ b/tasks/cluster-setup-pcs-0.10.yml
@@ -14,30 +14,30 @@
       {% for node in ansible_play_hosts %}
         {{ hostvars[node].__ha_cluster_node_name | quote }}
         {%
-          for addr in hostvars[node].ha_cluster.corosync_addresses | default([])
+          for addr in hostvars[node].ha_cluster.corosync_addresses | d([])
         %}
           addr={{ addr | quote }}
         {% endfor %}
       {% endfor %}
 
-      {% if ha_cluster_transport | default({}) %}
-        transport {{ ha_cluster_transport.type | default('knet') | quote }}
-        {% for option in ha_cluster_transport.options | default([]) %}
+      {% if ha_cluster_transport | d({}) %}
+        transport {{ ha_cluster_transport.type | d('knet') | quote }}
+        {% for option in ha_cluster_transport.options | d([]) %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
-        {% for link in ha_cluster_transport.links | default([]) %}
+        {% for link in ha_cluster_transport.links | d([]) %}
           link
           {% for option in link %}
             {{ option.name | quote }}={{ option.value | quote }}
           {% endfor %}
         {% endfor %}
-        {% if ha_cluster_transport.compression | default([]) %}
+        {% if ha_cluster_transport.compression | d([]) %}
           compression
           {% for option in ha_cluster_transport.compression %}
             {{ option.name | quote }}={{ option.value | quote }}
           {% endfor %}
         {% endif %}
-        {% if ha_cluster_transport.crypto | default([]) %}
+        {% if ha_cluster_transport.crypto | d([]) %}
           crypto
           {% for option in ha_cluster_transport.crypto %}
             {{ option.name | quote }}={{ option.value | quote }}
@@ -45,7 +45,7 @@
         {% endif %}
       {% endif %}
 
-      {% if ha_cluster_totem.options | default([]) %}
+      {% if ha_cluster_totem.options | d([]) %}
         totem
         {% for option in ha_cluster_totem.options %}
           {{ option.name | quote }}={{ option.value | quote }}
@@ -53,26 +53,26 @@
       {% endif %}
 
       {%
-        if __ha_cluster_sbd_needs_atb | default(false)
-          or ha_cluster_quorum.options | default([])
+        if __ha_cluster_sbd_needs_atb | d(false)
+          or ha_cluster_quorum.options | d([])
       %}
         quorum
-        {% for option in ha_cluster_quorum.options | default([]) %}
+        {% for option in ha_cluster_quorum.options | d([]) %}
           {% if
-            not __ha_cluster_sbd_needs_atb | default(false)
+            not __ha_cluster_sbd_needs_atb | d(false)
             or option.name != 'auto_tie_breaker'
           %}
             {{ option.name | quote }}={{ option.value | quote }}
           {% endif %}
         {% endfor %}
-        {% if __ha_cluster_sbd_needs_atb | default(false) %}
+        {% if __ha_cluster_sbd_needs_atb | d(false) %}
           auto_tie_breaker=1
         {% endif %}
       {% endif %}
-  run_once: yes
+  run_once: true
   # We always need to create corosync.conf file to see whether it's the same as
   # what is already present on the cluster nodes. However, we don't want to
   # report it as a change since the only thing which matters is copying the
   # resulting corosync.conf to cluster nodes.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/cluster-setup.yml b/tasks/cluster-setup.yml
index 6650f0b6..61c4601c 100644
--- a/tasks/cluster-setup.yml
+++ b/tasks/cluster-setup.yml
@@ -5,12 +5,12 @@
     state: file
     suffix: _ha_cluster_corosync_conf
   register: __ha_cluster_tempfile_corosync_conf
-  run_once: yes
+  run_once: true
   # We always need to create corosync.conf file to see whether it's the same as
   # what is already present on the cluster nodes. However, we don't want to
   # report it as a change since the only thing which matters is copying the
   # resulting corosync.conf to cluster nodes.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 - name: Create a corosync.conf file content
@@ -20,7 +20,7 @@
   slurp:
     src: "{{ __ha_cluster_tempfile_corosync_conf.path }}"
   register: __ha_cluster_data_corosync_conf
-  run_once: yes
+  run_once: true
   when: __ha_cluster_tempfile_corosync_conf.path is defined
 
 - name: Distribute corosync.conf file
@@ -38,12 +38,12 @@
     path: "{{ __ha_cluster_tempfile_corosync_conf.path }}"
     state: absent
   when: __ha_cluster_tempfile_corosync_conf.path is defined
-  run_once: yes
+  run_once: true
   # We always need to create corosync.conf file to see whether it's the same as
   # what is already present on the cluster nodes. However, we don't want to
   # report it as a change since the only thing which matters is copying the
   # resulting corosync.conf to cluster nodes.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 - name: Get corosync authkey
diff --git a/tasks/cluster-start-and-reload.yml b/tasks/cluster-start-and-reload.yml
index 2eb5e031..2873c44a 100644
--- a/tasks/cluster-start-and-reload.yml
+++ b/tasks/cluster-start-and-reload.yml
@@ -34,8 +34,8 @@
         __ha_cluster_distribute_corosync_conf.changed
         or __ha_cluster_distribute_corosync_authkey.changed
         or __ha_cluster_distribute_pacemaker_authkey.changed
-        or (__ha_cluster_sbd_service_enable_disable.changed | default(false))
-        or (__ha_cluster_distribute_sbd_config.changed | default(false))
+        or (__ha_cluster_sbd_service_enable_disable.changed | d(false))
+        or (__ha_cluster_distribute_sbd_config.changed | d(false))
     - >
         item != 'corosync-qdevice'
         or 'corosync-qdevice.service' in ansible_facts.services
@@ -55,7 +55,7 @@
 - name: Reload corosync configuration
   command:
     cmd: corosync-cfgtool -R
-  run_once: yes
+  run_once: true
   when: not ansible_check_mode
 
 - name: Start corosync-qdevice
@@ -73,13 +73,13 @@
 - name: Wait for the cluster to fully start and form membership
   command:
     cmd: pcs cluster start --all --wait
-  run_once: yes
+  run_once: true
   # There is no point in waiting in check mode as there is nothing to wait for,
   # no daemons are actually starting.
   when: not ansible_check_mode
   # This is just waiting for cluster to finish starting, no change in
   # configuration / state occurs as the services were started by tasks above.
-  changed_when: no
+  changed_when: false
 
 
 # Purge removed nodes from Pacemaker's caches
@@ -96,19 +96,19 @@
     # removed from a cluster after corosync / pacemaker restart. Therefore,
     # crm_node is no help when we want to list such nodes.
   register: __ha_cluster_list_pacemaker_nodes
-  run_once: yes
+  run_once: true
   # This cannot be run in the check mode as it requires cluster to be started
   # and its configuration reloaded. Check mode does not start the cluster nor
   # does it reload its configuration, it only shows the cluster would be
   # started.
   when: not ansible_check_mode
   # This only lists a part of cluster configuration.
-  changed_when: no
+  changed_when: false
 
 - name: Purge removed nodes from pacemaker's cache
   command:
     cmd: pcs -- cluster node clear {{ item | quote }}
-  run_once: yes
+  run_once: true
   loop: "{{ __ha_cluster_list_pacemaker_nodes.stdout_lines }}"
   # This cannot be run in the check mode as it requires cluster to be started.
   # Check mode does not start the cluster, it only shows the cluster would be
diff --git a/tasks/create-and-push-cib.yml b/tasks/create-and-push-cib.yml
index b12bebfb..c349a1e8 100644
--- a/tasks/create-and-push-cib.yml
+++ b/tasks/create-and-push-cib.yml
@@ -12,7 +12,7 @@
     state: file
     suffix: _ha_cluster_original_cib_xml
   register: __ha_cluster_tempfile_original_cib_xml
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 - name: Create a tempfile for new CIB
@@ -20,15 +20,15 @@
     state: file
     suffix: _ha_cluster_cib_xml
   register: __ha_cluster_tempfile_cib_xml
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 - name: Fetch CIB configuration
   command:
     cmd: cibadmin --query
   register: __ha_cluster_fetch_cib
-  check_mode: no
-  changed_when: no  # this is a read-only command
+  check_mode: false
+  changed_when: false  # this is a read-only command
 
 - name: Write CIB configuration
   copy:
@@ -40,7 +40,7 @@
   loop:
     - "{{ __ha_cluster_tempfile_cib_xml.path }}"
     - "{{ __ha_cluster_tempfile_original_cib_xml.path }}"
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 # Starting with an empty CIB would remove all nodes and other parts of CIB
@@ -70,7 +70,7 @@
       )]'
   environment:
     CIB_file: "{{ __ha_cluster_tempfile_cib_xml.path }}"
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 
@@ -84,7 +84,7 @@
   # ha_cluster_cluster_properties
   vars:
     properties_set: "{{ ha_cluster_cluster_properties[0] }}"
-  when: ha_cluster_cluster_properties[0].attrs | default([])
+  when: ha_cluster_cluster_properties[0].attrs | d([])
 
 - block:
     ## Resources
@@ -131,7 +131,7 @@
 
     - name: Configure resource colocation constraints
       include_tasks: pcs-cib-constraint-colocation.yml
-      when: not constraint.resource_sets | default()
+      when: not constraint.resource_sets | d()
       loop: "{{ ha_cluster_constraints_colocation }}"
       loop_control:
         index_var: constraint_index
@@ -141,7 +141,7 @@
       include_tasks: pcs-cib-constraint-set.yml
       vars:
         constraint_type: colocation
-      when: constraint.resource_sets | default()
+      when: constraint.resource_sets | d()
       loop: "{{ ha_cluster_constraints_colocation }}"
       loop_control:
         index_var: constraint_index
@@ -149,7 +149,7 @@
 
     - name: Configure resource order constraints
       include_tasks: pcs-cib-constraint-order.yml
-      when: not constraint.resource_sets | default()
+      when: not constraint.resource_sets | d()
       loop: "{{ ha_cluster_constraints_order }}"
       loop_control:
         index_var: constraint_index
@@ -159,7 +159,7 @@
       include_tasks: pcs-cib-constraint-set.yml
       vars:
         constraint_type: order
-      when: constraint.resource_sets | default()
+      when: constraint.resource_sets | d()
       loop: "{{ ha_cluster_constraints_order }}"
       loop_control:
         index_var: constraint_index
@@ -167,7 +167,7 @@
 
     - name: Configure resource ticket constraints
       include_tasks: pcs-cib-constraint-ticket.yml
-      when: not constraint.resource_sets | default()
+      when: not constraint.resource_sets | d()
       loop: "{{ ha_cluster_constraints_ticket }}"
       loop_control:
         index_var: constraint_index
@@ -177,7 +177,7 @@
       include_tasks: pcs-cib-constraint-set.yml
       vars:
         constraint_type: ticket
-      when: constraint.resource_sets | default()
+      when: constraint.resource_sets | d()
       loop: "{{ ha_cluster_constraints_ticket }}"
       loop_control:
         index_var: constraint_index
@@ -201,7 +201,7 @@
     state: file
     suffix: _ha_cluster_cib_diff
   register: __ha_cluster_tempfile_cib_diff
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 - name: Compare new and original CIB
@@ -211,7 +211,7 @@
       --original {{ __ha_cluster_tempfile_original_cib_xml.path }}
       --new {{ __ha_cluster_tempfile_cib_xml.path }}
   register: __ha_cluster_cib_diff
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
   failed_when:
     - __ha_cluster_cib_diff.rc != 0  # success, CIBs are the same
@@ -224,7 +224,7 @@
     owner: root
     group: root
     mode: 0600
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
   when: __ha_cluster_cib_diff.rc == 1
 
@@ -233,7 +233,7 @@
     cmd: >
       cibadmin --verbose --patch
       --xml-file {{ __ha_cluster_tempfile_cib_diff.path | quote }}
-  run_once: yes
+  run_once: true
   when: __ha_cluster_cib_diff.rc == 1
 
 - name: Remove CIB tempfiles
@@ -244,5 +244,5 @@
     - "{{ __ha_cluster_tempfile_cib_xml }}"
     - "{{ __ha_cluster_tempfile_original_cib_xml }}"
     - "{{ __ha_cluster_tempfile_cib_diff }}"
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/enable-repositories/CentOS.yml b/tasks/enable-repositories/CentOS.yml
index fe8b04bb..ae115dfb 100644
--- a/tasks/enable-repositories/CentOS.yml
+++ b/tasks/enable-repositories/CentOS.yml
@@ -4,10 +4,10 @@
   command:
     cmd: dnf repolist
     # See the comment bellow.
-    warn: no
+    warn: false
   register: __ha_cluster_repolist
-  changed_when: no
-  check_mode: no
+  changed_when: false
+  check_mode: false
 
 - name: Enable CentOS repositories
   command:
@@ -23,6 +23,6 @@
     #
     # Using dnf, similar differences must also be handled. But at least the
     # approach and __ha_cluster_repos structure is the same as for RHEL.
-    warn: no
+    warn: false
   loop: "{{ __ha_cluster_repos }}"
   when: item.name not in __ha_cluster_repolist.stdout
diff --git a/tasks/enable-repositories/RedHat.yml b/tasks/enable-repositories/RedHat.yml
index 6b74b6ac..35ddc43a 100644
--- a/tasks/enable-repositories/RedHat.yml
+++ b/tasks/enable-repositories/RedHat.yml
@@ -3,10 +3,10 @@
 - name: List active RHEL repositories
   command:
     cmd: dnf repolist
-    warn: no
+    warn: false
   register: __ha_cluster_repolist
-  changed_when: no
-  check_mode: no
+  changed_when: false
+  check_mode: false
 
 - name: Enable RHEL repositories
   command: subscription-manager repos --enable {{ item.id | quote }}
diff --git a/tasks/pcs-auth-pcs-0.10.yml b/tasks/pcs-auth-pcs-0.10.yml
index 06bd6eac..0bc214d3 100644
--- a/tasks/pcs-auth-pcs-0.10.yml
+++ b/tasks/pcs-auth-pcs-0.10.yml
@@ -8,10 +8,10 @@
       pcs host auth -u hacluster --
       {% for node in ansible_play_hosts %}
         {{ hostvars[node].__ha_cluster_node_name | quote }}
-        {% if hostvars[node].ha_cluster.pcs_address | default("") %}
+        {% if hostvars[node].ha_cluster.pcs_address | d("") %}
           addr={{ hostvars[node].ha_cluster.pcs_address | quote }}
         {% endif %}
       {% endfor %}
     stdin: "{{ ha_cluster_hacluster_password }}"
-  run_once: yes
-  changed_when: yes
+  run_once: true
+  changed_when: true
diff --git a/tasks/pcs-auth.yml b/tasks/pcs-auth.yml
index b7c1bd62..567a39e4 100644
--- a/tasks/pcs-auth.yml
+++ b/tasks/pcs-auth.yml
@@ -8,7 +8,7 @@
         {{ hostvars[node].__ha_cluster_node_name | quote }}
       {% endfor %}
   register: __ha_cluster_pcs_auth_status
-  check_mode: no
+  check_mode: false
   # rc == 0 means all nodes are authenticated
   # rc == 2 means not all nodes are authenticated
   # any other rc means an error
@@ -20,7 +20,7 @@
 - name: Run pcs auth
   include_tasks: pcs-auth-{{ __ha_cluster_pcs_provider }}.yml
   # Include the tasks for nodes which can not talk to other nodes due to
-  # missing pcs auth tokens. The pcs-auth-*.yml contains "run_once: yes" as
+  # missing pcs auth tokens. The pcs-auth-*.yml contains "run_once: true" as
   # running the auth on one node is sufficient (auth tokens are distributed by
   # pcs automatically). By appling "when" here and "run_once" in the included
   # task, it is achieved that the pcs auth command is run once on one of the
diff --git a/tasks/pcs-cib-constraint-colocation.yml b/tasks/pcs-cib-constraint-colocation.yml
index 96e523bf..2423471a 100644
--- a/tasks/pcs-cib-constraint-colocation.yml
+++ b/tasks/pcs-cib-constraint-colocation.yml
@@ -1,49 +1,43 @@
 # SPDX-License-Identifier: MIT
 ---
 - name: Configure colocation constraint '{{
-      constraint.id | default(constraint_index)
+      constraint.id | d(constraint_index)
     }}'
   command:
     cmd: >
       pcs -f {{ __ha_cluster_tempfile_cib_xml.path | quote }}
       -- constraint colocation add
-      {% if constraint.resource_follower.role | default() %}
+      {% if constraint.resource_follower.role | d() %}
         {{
           __ha_cluster_pcs_cli_role[constraint.resource_follower.role | lower]
-          | default(constraint.resource_follower.role)
+          | d(constraint.resource_follower.role)
           | lower | quote
         }}
       {% endif %}
       {{ constraint.resource_follower.id | quote }}
       with
-      {% if constraint.resource_leader.role | default() %}
+      {% if constraint.resource_leader.role | d() %}
         {{
           __ha_cluster_pcs_cli_role[constraint.resource_leader.role | lower]
-          | default(constraint.resource_leader.role)
+          | d(constraint.resource_leader.role)
           | lower | quote
         }}
       {% endif %}
       {{ constraint.resource_leader.id | quote }}
-      {%
-        for option in constraint.options | default([])
-          if option.name == 'score'
-      %}
+      {% for option in constraint.options | d([]) if option.name == 'score' %}
         {{ option.value | quote }}
       {% else %}
         INFINITY
       {% endfor %}
-      {% if constraint.id | default() %}
+      {% if constraint.id | d() %}
         id={{ constraint.id | quote }}
       {% endif %}
-      {%
-        for option in constraint.options | default([])
-          if option.name != 'score'
-      %}
+      {% for option in constraint.options | d([]) if option.name != 'score' %}
         {{ option.name | quote }}={{ option.value | quote }}
       {% endfor %}
   # We always need to create CIB to see whether it's the same as what is
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-constraint-location.yml b/tasks/pcs-cib-constraint-location.yml
index dd0e537c..a12a5f33 100644
--- a/tasks/pcs-cib-constraint-location.yml
+++ b/tasks/pcs-cib-constraint-location.yml
@@ -1,73 +1,64 @@
 # SPDX-License-Identifier: MIT
 ---
 - name: Configure location constraint '{{
-      constraint.id | default(constraint_index)
+      constraint.id | d(constraint_index)
     }}'
   command:
     cmd: >
       pcs -f {{ __ha_cluster_tempfile_cib_xml.path | quote }}
       -- constraint location
-      {% if constraint.rule | default() %}
-        {% if constraint.resource.pattern | default() %}
+      {% if constraint.rule | d() %}
+        {% if constraint.resource.pattern | d() %}
           regexp%{{ constraint.resource.pattern | quote }}
         {% else %}
           {{ constraint.resource.id | quote }}
         {% endif %}
         rule
-        {% if constraint.id | default() %}
+        {% if constraint.id | d() %}
           constraint-id={{ constraint.id | quote }}
         {% endif %}
-        {% if constraint.resource.role | default() %}
+        {% if constraint.resource.role | d() %}
           role={{
             __ha_cluster_pcs_cli_role[constraint.resource.role | lower]
-            | default(constraint.resource.role)
+            | d(constraint.resource.role)
             | lower | quote
           }}
         {% endif %}
-        {% for option in constraint.options | default([]) %}
+        {% for option in constraint.options | d([]) %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
         {{ constraint.rule }}
       {% elif
-        (constraint.id | default())
+        (constraint.id | d())
         or (
-          constraint.options | default([])
+          constraint.options | d([])
           | rejectattr('name', 'match', '^score$') | list
         )
       %}
         add
         {{ constraint.id | quote }}
-        {% if constraint.resource.pattern | default() %}
+        {% if constraint.resource.pattern | d() %}
           regexp%{{ constraint.resource.pattern | quote }}
         {% else %}
           {{ constraint.resource.id | quote }}
         {% endif %}
         {{ constraint.node | quote }}
-        {%
-          for option in constraint.options | default([])
-            if option.name == 'score'
-        %}
+        {% for option in constraint.options | d([]) if option.name == 'score' %}
           {{ option.value | quote }}
         {% else %}
           INFINITY
         {% endfor %}
-        {%
-          for option in constraint.options | default([])
-            if option.name != 'score'
-        %}
+        {% for option in constraint.options | d([]) if option.name != 'score' %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
       {% else %}
-        {% if constraint.resource.pattern | default() %}
+        {% if constraint.resource.pattern | d() %}
           regexp%{{ constraint.resource.pattern | quote }}
         {% else %}
           {{ constraint.resource.id | quote }}
         {% endif %}
         prefers
-        {%
-          for option in constraint.options | default([])
-            if option.name == 'score'
-        %}
+        {% for option in constraint.options | d([]) if option.name == 'score' %}
           {{ constraint.node | quote }}={{ option.value | quote }}
         {% else %}
           {{ constraint.node | quote }}=INFINITY
@@ -77,5 +68,5 @@
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-constraint-order.yml b/tasks/pcs-cib-constraint-order.yml
index f8757a6c..9daed66d 100644
--- a/tasks/pcs-cib-constraint-order.yml
+++ b/tasks/pcs-cib-constraint-order.yml
@@ -1,30 +1,28 @@
 # SPDX-License-Identifier: MIT
 ---
-- name: Configure order constraint '{{
-      constraint.id | default(constraint_index)
-    }}'
+- name: Configure order constraint '{{ constraint.id | d(constraint_index) }}'
   command:
     cmd: >
       pcs -f {{ __ha_cluster_tempfile_cib_xml.path | quote }}
       -- constraint order
-      {% if constraint.resource_first.action | default() %}
+      {% if constraint.resource_first.action | d() %}
         {{ constraint.resource_first.action | quote }}
       {% endif %}
       {{ constraint.resource_first.id | quote }}
       then
-      {% if constraint.resource_then.action | default() %}
+      {% if constraint.resource_then.action | d() %}
         {{ constraint.resource_then.action | quote }}
       {% endif %}
       {{ constraint.resource_then.id | quote }}
-      {% if constraint.id | default() %}
+      {% if constraint.id | d() %}
         id={{ constraint.id | quote }}
       {% endif %}
-      {% for option in constraint.options | default([]) %}
+      {% for option in constraint.options | d([]) %}
         {{ option.name | quote }}={{ option.value | quote }}
       {% endfor %}
   # We always need to create CIB to see whether it's the same as what is
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-constraint-set.yml b/tasks/pcs-cib-constraint-set.yml
index e4d817a3..ecd40716 100644
--- a/tasks/pcs-cib-constraint-set.yml
+++ b/tasks/pcs-cib-constraint-set.yml
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: MIT
 ---
 - name: Configure {{ constraint_type }} constraint '{{
-      constraint.id | default(constraint_index)
+      constraint.id | d(constraint_index)
     }}'
   command:
     cmd: >
@@ -12,11 +12,11 @@
         {% for resource in set.resource_ids %}
           {{ resource | quote }}
         {% endfor %}
-        {% for option in set.options | default([]) %}
+        {% for option in set.options | d([]) %}
           {% if option.name == 'role' %}
             role={{
               __ha_cluster_pcs_cli_role[option.value | lower]
-              | default(option.value)
+              | d(option.value)
               | capitalize | quote
             }}
           {% else %}
@@ -26,17 +26,17 @@
       {% endfor %}
       {% if
         constraint_type == 'ticket'
-        or (constraint.id | default())
-        or (constraint.options | default())
+        or (constraint.id | d())
+        or (constraint.options | d())
       %}
         setoptions
         {% if constraint_type == 'ticket' %}
           ticket={{ constraint.ticket | quote }}
         {% endif %}
-        {% if constraint.id | default() %}
+        {% if constraint.id | d() %}
           id={{ constraint.id | quote }}
         {% endif %}
-        {% for option in constraint.options | default([]) %}
+        {% for option in constraint.options | d([]) %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
       {% endif %}
@@ -44,5 +44,5 @@
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-constraint-ticket.yml b/tasks/pcs-cib-constraint-ticket.yml
index 2ff7ac61..ae5fe88b 100644
--- a/tasks/pcs-cib-constraint-ticket.yml
+++ b/tasks/pcs-cib-constraint-ticket.yml
@@ -1,30 +1,28 @@
 # SPDX-License-Identifier: MIT
 ---
-- name: Configure ticket constraint '{{
-      constraint.id | default(constraint_index)
-    }}'
+- name: Configure ticket constraint '{{ constraint.id | d(constraint_index) }}'
   command:
     cmd: >
       pcs -f {{ __ha_cluster_tempfile_cib_xml.path | quote }}
       -- constraint ticket add
       {{ constraint.ticket | quote }}
-      {% if constraint.resource.role | default() %}
+      {% if constraint.resource.role | d() %}
         {{
           __ha_cluster_pcs_cli_role[constraint.resource.role | lower]
-          | default(constraint.resource.role)
+          | d(constraint.resource.role)
           | lower | quote
         }}
       {% endif %}
       {{ constraint.resource.id | quote }}
-      {% if constraint.id | default() %}
+      {% if constraint.id | d() %}
         id={{ constraint.id | quote }}
       {% endif %}
-      {% for option in constraint.options | default([]) %}
+      {% for option in constraint.options | d([]) %}
         {{ option.name | quote }}={{ option.value | quote }}
       {% endfor %}
   # We always need to create CIB to see whether it's the same as what is
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-resource-bundle.yml b/tasks/pcs-cib-resource-bundle.yml
index c4b833a4..30bd7660 100644
--- a/tasks/pcs-cib-resource-bundle.yml
+++ b/tasks/pcs-cib-resource-bundle.yml
@@ -8,32 +8,32 @@
       pcs -f {{ __ha_cluster_tempfile_cib_xml.path | quote }}
       -- resource bundle create {{ resource_bundle.id | quote }}
       container {{ resource_bundle.container.type | quote }}
-      {% for option in resource_bundle.container.options | default([]) %}
+      {% for option in resource_bundle.container.options | d([]) %}
         {{ option.name | quote }}={{ option.value | quote }}
       {% endfor %}
 
-      {% if resource_bundle.network_options | default([]) %}
+      {% if resource_bundle.network_options | d([]) %}
         network
-        {% for option in resource_bundle.network_options | default([]) %}
+        {% for option in resource_bundle.network_options | d([]) %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
       {% endif %}
 
-      {% for map in resource_bundle.port_map | default([]) %}
+      {% for map in resource_bundle.port_map | d([]) %}
         port-map
-        {% for option in map | default([]) %}
+        {% for option in map | d([]) %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
       {% endfor %}
 
-      {% for map in resource_bundle.storage_map | default([]) %}
+      {% for map in resource_bundle.storage_map | d([]) %}
         storage-map
-        {% for option in map | default([]) %}
+        {% for option in map | d([]) %}
           {{ option.name | quote }}={{ option.value | quote }}
         {% endfor %}
       {% endfor %}
 
-      {% if resource_bundle.meta_attrs[0].attrs | default([]) %}
+      {% if resource_bundle.meta_attrs[0].attrs | d([]) %}
         meta
         {% for attr in resource_bundle.meta_attrs[0].attrs %}
           {{ attr.name | quote }}={{ attr.value | quote }}
@@ -43,5 +43,5 @@
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-resource-clone.yml b/tasks/pcs-cib-resource-clone.yml
index d9b5cc5c..a780523b 100644
--- a/tasks/pcs-cib-resource-clone.yml
+++ b/tasks/pcs-cib-resource-clone.yml
@@ -5,17 +5,17 @@
     msg: >
       Custom clone id '{{ resource_clone.id }}' is ignored
       for resource clone '{{ resource_clone.resource_id }}', please upgrade pcs
-  ignore_errors: yes  # noqa ignore-errors
+  ignore_errors: true  # noqa ignore-errors
   when:
     - resource_clone.id is defined
     - not (
         (
-          resource_clone.promotable | default(false)
+          resource_clone.promotable | d(false)
           and
           'pcmk.resource.promotable.custom-id' in __ha_cluster_pcs_capabilities
         )
         or (
-          not resource_clone.promotable | default(false)
+          not resource_clone.promotable | d(false)
           and
           'pcmk.resource.clone.custom-id' in __ha_cluster_pcs_capabilities
         )
@@ -28,7 +28,7 @@
     cmd: >
       pcs -f {{ __ha_cluster_tempfile_cib_xml.path | quote }}
       -- resource
-      {% if resource_clone.promotable | default(false) %}
+      {% if resource_clone.promotable | d(false) %}
         promotable
       {% else %}
         clone
@@ -39,12 +39,12 @@
         resource_clone.id is defined
         and (
         (
-          resource_clone.promotable | default(false)
+          resource_clone.promotable | d(false)
           and
           'pcmk.resource.promotable.custom-id' in __ha_cluster_pcs_capabilities
         )
         or (
-          not resource_clone.promotable | default(false)
+          not resource_clone.promotable | d(false)
           and
           'pcmk.resource.clone.custom-id' in __ha_cluster_pcs_capabilities
         )
@@ -52,7 +52,7 @@
       %}
         {{ resource_clone.id | quote }}
       {% endif %}
-      {% if resource_clone.meta_attrs[0].attrs | default([]) %}
+      {% if resource_clone.meta_attrs[0].attrs | d([]) %}
         {% for attr in resource_clone.meta_attrs[0].attrs %}
           {{ attr.name | quote }}={{ attr.value | quote }}
         {% endfor %}
@@ -61,5 +61,5 @@
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-resource-group.yml b/tasks/pcs-cib-resource-group.yml
index ca6f34ea..0c9eaa94 100644
--- a/tasks/pcs-cib-resource-group.yml
+++ b/tasks/pcs-cib-resource-group.yml
@@ -12,7 +12,7 @@
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
 
 - name: Configure meta attributes of resource group '{{ resource_group.id }}'
@@ -23,10 +23,10 @@
       {% for attr in resource_group.meta_attrs[0].attrs %}
         {{ attr.name | quote }}={{ attr.value | quote }}
       {% endfor %}
-  when: resource_group.meta_attrs[0].attrs | default([])
+  when: resource_group.meta_attrs[0].attrs | d([])
   # We always need to create CIB to see whether it's the same as what is
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cib-resource-primitive.yml b/tasks/pcs-cib-resource-primitive.yml
index 4d8e237a..8f319bf6 100644
--- a/tasks/pcs-cib-resource-primitive.yml
+++ b/tasks/pcs-cib-resource-primitive.yml
@@ -15,26 +15,26 @@
         {{ resource.agent | quote }}
       {% endif %}
 
-      {% if resource.instance_attrs[0].attrs | default([]) %}
+      {% if resource.instance_attrs[0].attrs | d([]) %}
         {% for attr in resource.instance_attrs[0].attrs %}
           {{ attr.name | quote }}={{ attr.value | quote }}
         {% endfor %}
       {% endif %}
 
-      {% if resource.meta_attrs[0].attrs | default([]) %}
+      {% if resource.meta_attrs[0].attrs | d([]) %}
         meta
         {% for attr in resource.meta_attrs[0].attrs %}
           {{ attr.name | quote }}={{ attr.value | quote }}
         {% endfor %}
       {% endif %}
 
-      {% if resource.operations | default([]) %}
+      {% if resource.operations | d([]) %}
         {% for operation in resource.operations %}
           op
           {% if operation.action is defined %}
             {{ operation.action | quote }}
           {% endif %}
-          {% if operation.attrs | default([]) %}
+          {% if operation.attrs | d([]) %}
             {% for attr in operation.attrs %}
               {{ attr.name | quote }}={{ attr.value | quote }}
             {% endfor %}
@@ -42,12 +42,12 @@
         {% endfor %}
       {% endif %}
 
-      {% if __ha_cluster_primitive_bundle_map[resource.id] | default %}
+      {% if __ha_cluster_primitive_bundle_map[resource.id] | d() %}
         bundle {{ __ha_cluster_primitive_bundle_map[resource.id] | quote }}
       {% endif %}
   # We always need to create CIB to see whether it's the same as what is
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-cluster-properties.yml b/tasks/pcs-cluster-properties.yml
index e60b9e5e..19fc701d 100644
--- a/tasks/pcs-cluster-properties.yml
+++ b/tasks/pcs-cluster-properties.yml
@@ -10,5 +10,5 @@
   # already present in the cluster. However, we don't want to report it as a
   # change since the only thing which matters is pushing the resulting CIB to
   # the cluster.
-  check_mode: no
+  check_mode: false
   changed_when: not ansible_check_mode
diff --git a/tasks/pcs-configure-pcs-pcsd.yml b/tasks/pcs-configure-pcs-pcsd.yml
index 19cd982b..f980524d 100644
--- a/tasks/pcs-configure-pcs-pcsd.yml
+++ b/tasks/pcs-configure-pcs-pcsd.yml
@@ -48,19 +48,19 @@
     owner: root
     group: root
     mode: 0644
-    trim_blocks: no
+    trim_blocks: false
 
 - name: Start pcsd with updated config files and configure it to start on boot
   service:
     name: pcsd
     state: started
-    enabled: yes
+    enabled: true
 
 - name: Fetch pcs capabilities
   command:
     cmd: pcs --version --full
-  check_mode: no
-  changed_when: no  # this is a read-only command
+  check_mode: false
+  changed_when: false  # this is a read-only command
   register: __ha_cluster_pcs_version
 
 - name: Parse pcs capabilities
diff --git a/tasks/presharedkey.yml b/tasks/presharedkey.yml
index 75ebe352..cc9ce5a5 100644
--- a/tasks/presharedkey.yml
+++ b/tasks/presharedkey.yml
@@ -31,7 +31,7 @@
       no_log: true
   when:
     - preshared_key_src is string and preshared_key_src | length > 1
-  run_once: yes
+  run_once: true
   delegate_to: localhost
 
 - name: Generate random {{ preshared_key_label }}
@@ -40,7 +40,7 @@
       command:
         cmd: openssl rand -base64 {{ preshared_key_length | quote }}
       register: __ha_cluster_openssl_rand
-      changed_when: no
+      changed_when: false
 
     - name: Fetch generated {{ preshared_key_label }}
       set_fact:
@@ -48,7 +48,7 @@
           "{{ __ha_cluster_openssl_rand.stdout }}"
   when:
     - not (preshared_key_src is string and preshared_key_src | length > 1)
-  run_once: yes
+  run_once: true
   # Prevent key contents to be printed to the output
   no_log: true
 
@@ -75,7 +75,7 @@
       # Prevent key contents to be printed to the output
       no_log: true
       # Following variables set the fact for all nodes
-      delegate_facts: yes
+      delegate_facts: true
       delegate_to: "{{ item }}"
       with_items: "{{ ansible_play_hosts }}"
   when:
diff --git a/tasks/sbd.yml b/tasks/sbd.yml
index 9f2f67e2..69bc706d 100644
--- a/tasks/sbd.yml
+++ b/tasks/sbd.yml
@@ -5,15 +5,15 @@
         - name: Probe SBD devices
           command:
             cmd: sbd -d {{ item | quote }} dump
-          loop: "{{ ha_cluster.sbd_devices | default([]) }}"
+          loop: "{{ ha_cluster.sbd_devices | d([]) }}"
           register: __ha_cluster_check_sbd_devices_result
-          changed_when: no
+          changed_when: false
           # return_code == 0 means the disk is initialized already
           # return_code != 0 means the disk is not initialized yet
-          failed_when: no
+          failed_when: false
           # This command doesn't do any changes and so can safely be executed
           # even in check_mode.
-          check_mode: no
+          check_mode: false
 
         - name: Initialize SBD devices
           command:
@@ -21,7 +21,7 @@
             cmd: >
               pcs --force -- stonith sbd device setup
               device={{ item.item | quote }}
-              {% for option in ha_cluster_sbd_options | default([]) %}
+              {% for option in ha_cluster_sbd_options | d([]) %}
                 {% if option.name == 'watchdog-timeout' %}
                   watchdog-timeout={{ option.value | quote }}
                   msgwait-timeout={{ option.value * 2 }}
@@ -29,7 +29,7 @@
               {% endfor %}
           # The initialization is done only if a device has not been
           # initialized already. Therefore this task always makes a change.
-          changed_when: yes
+          changed_when: true
           loop: "{{ __ha_cluster_check_sbd_devices_result.results }}"
           when: item.rc != 0
       # Ideally, the block as a whole should run one node at a time. This does
@@ -50,12 +50,10 @@
         group: root
         mode: 0644
       vars:
-        options: "{{ ha_cluster_sbd_options | default([]) }}"
+        options: "{{ ha_cluster_sbd_options | d([]) }}"
         node_name: "{{ __ha_cluster_node_name }}"
-        node_watchdog: "{{
-            ha_cluster.sbd_watchdog | default('/dev/watchdog')
-          }}"
-        node_devices: "{{ ha_cluster.sbd_devices | default([]) }}"
+        node_watchdog: "{{ ha_cluster.sbd_watchdog | d('/dev/watchdog') }}"
+        node_devices: "{{ ha_cluster.sbd_devices | d([]) }}"
       register: __ha_cluster_distribute_sbd_config
 
   when: ha_cluster_sbd_enabled
@@ -69,10 +67,10 @@
       pcs --force
       {{
         (
-          ansible_facts.services['pacemaker.service']['state'] | default()
+          ansible_facts.services['pacemaker.service']['state'] | d()
           == 'running'
         ) | ternary('', '-f /var/lib/pacemaker/cib/cib.xml')
       }}
       -- property set
       stonith-watchdog-timeout={{ ha_cluster_sbd_enabled | ternary('', '0') }}
-  changed_when: yes
+  changed_when: true
diff --git a/tasks/test_cleanup_sbd.yml b/tasks/test_cleanup_sbd.yml
index 39ffa445..010b85b4 100644
--- a/tasks/test_cleanup_sbd.yml
+++ b/tasks/test_cleanup_sbd.yml
@@ -9,7 +9,7 @@
 - name: Unmount SBD devices
   command:
     cmd: losetup -d {{ __test_sbd_mount.stdout }}
-  changed_when: yes
+  changed_when: true
 
 - name: Delete backing files for SBD devices
   file:
diff --git a/tasks/test_setup.yml b/tasks/test_setup.yml
index a268f663..9e972525 100644
--- a/tasks/test_setup.yml
+++ b/tasks/test_setup.yml
@@ -19,6 +19,6 @@
 # Test systems may not have repositories available through subscriptions
 - name: Do not try to enable RHEL repositories
   set_fact:
-    ha_cluster_enable_repos: no
+    ha_cluster_enable_repos: false
   when:
     - ansible_distribution == 'RedHat'
diff --git a/tasks/test_setup_sbd.yml b/tasks/test_setup_sbd.yml
index bf655834..0691333f 100644
--- a/tasks/test_setup_sbd.yml
+++ b/tasks/test_setup_sbd.yml
@@ -8,7 +8,7 @@
 ---
 - name: Load softdog module for SBD to have at least one watchdog
   command: modprobe softdog
-  changed_when: yes
+  changed_when: true
 
 - name: Create backing files for SBD devices
   tempfile:
@@ -19,10 +19,10 @@
 - name: Initialize backing files for SBD devices
   command:
     cmd: dd if=/dev/zero of={{ __test_sbd_tmpfile.path | quote }} bs=1M count=10
-  changed_when: yes
+  changed_when: true
 
 - name: Mount SBD devices
   command:
     cmd: losetup --show --find {{ __test_sbd_tmpfile.path | quote }}
   register: __test_sbd_mount
-  changed_when: yes
+  changed_when: true
diff --git a/templates/sbd b/templates/sbd
index 9eaa15b3..01216158 100644
--- a/templates/sbd
+++ b/templates/sbd
@@ -15,7 +15,7 @@
 # and to monitor. If specifying more than one path, use ";" as
 # separator.
 #
-{% if node_devices | default([]) %}
+{% if node_devices | d([]) %}
 SBD_DEVICE="{{ node_devices | join(';') }}"
 {% else %}
 SBD_DEVICE=""
@@ -67,7 +67,7 @@ SBD_DELAY_START="{{ option('delay-start', 'no') }}"
 # Watchdog device to use. If set to /dev/null, no watchdog device will
 # be used.
 #
-SBD_WATCHDOG_DEV="{{ node_watchdog | default('/dev/watchdog') }}"
+SBD_WATCHDOG_DEV="{{ node_watchdog | d('/dev/watchdog') }}"
 
 ## Type: integer
 ## Default: 5
diff --git a/tests/tasks/assert_cluster_running.yml b/tests/tasks/assert_cluster_running.yml
index 5a903ed3..774b2fd1 100644
--- a/tests/tasks/assert_cluster_running.yml
+++ b/tests/tasks/assert_cluster_running.yml
@@ -4,7 +4,7 @@
   command:
     cmd: pcs status pcsd
   register: auth_status
-  changed_when: no
+  changed_when: false
 
 - name: Check pcs auth
   assert:
@@ -15,7 +15,7 @@
   command:
     cmd: pcs status
   register: cluster_status
-  changed_when: no
+  changed_when: false
 
 - name: Check cluster is running
   assert:
diff --git a/tests/tasks/assert_corosync_config.yml b/tests/tasks/assert_corosync_config.yml
index 1c630b82..539ac4f8 100644
--- a/tests/tasks/assert_corosync_config.yml
+++ b/tests/tasks/assert_corosync_config.yml
@@ -12,7 +12,7 @@
       set -euo pipefail
       pcs cluster corosync | sed -e '/^nodelist {$/,/^}$/ { /^\s/d } ; /^$/d'
   register: __test_pcs_corosync_config
-  changed_when: no
+  changed_when: false
 
 - name: Print real corosync configuration
   debug:
diff --git a/tests/tasks/fetch_versions.yml b/tests/tasks/fetch_versions.yml
index ae23e4a8..9cee95e5 100644
--- a/tests/tasks/fetch_versions.yml
+++ b/tests/tasks/fetch_versions.yml
@@ -4,7 +4,7 @@
   command:
     cmd: pcs --version --full
   register: __test_pcs_version
-  changed_when: no
+  changed_when: false
 
 - name: Parse pcs capabilities
   set_fact:
diff --git a/tests/tasks/fixture_psks.yml b/tests/tasks/fixture_psks.yml
index 33a1427b..81adc344 100644
--- a/tests/tasks/fixture_psks.yml
+++ b/tests/tasks/fixture_psks.yml
@@ -24,7 +24,7 @@
         -keyout "{{ __test_pcsd_private_key_path }}"
         -out "{{ __test_pcsd_public_key_path }}"
         -subj "/CN={{ ansible_host }}"
-      changed_when: no
+      changed_when: false
 
     - name: Generate corosync key
       copy:
@@ -45,7 +45,7 @@
         mode: 0400
 
   delegate_to: localhost
-  run_once: yes
+  run_once: true
   vars:
     __test_pcsd_private_key_path: "{{ playbook_dir }}/tmp/pcsd.key"
     __test_pcsd_public_key_path: "{{ playbook_dir }}/tmp/pcsd.crt"
diff --git a/tests/tests_cib_constraints_create.yml b/tests/tests_cib_constraints_create.yml
index c10ae821..f1cf6eaf 100644
--- a/tests/tests_cib_constraints_create.yml
+++ b/tests/tests_cib_constraints_create.yml
@@ -403,7 +403,7 @@
               --xpath 'substring-after(/cib/@validate-with, "pacemaker-")'
               /var/lib/pacemaker/cib/cib.xml
           register: __test_cib_validate_with
-          changed_when: no
+          changed_when: false
 
         - name: Discover role names
           set_fact:
@@ -422,7 +422,7 @@
               command:
                 cmd: pcs constraint location --full
               register: __test_pcs_location_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real location constraints configuration
               debug:
@@ -543,7 +543,7 @@
               command:
                 cmd: pcs constraint colocation --full
               register: __test_pcs_colocation_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real colocation constraints configuration
               debug:
@@ -583,7 +583,7 @@
               command:
                 cmd: pcs constraint order --full
               register: __test_pcs_order_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real order constraints configuration
               debug:
@@ -615,7 +615,7 @@
               command:
                 cmd: pcs constraint ticket --full
               register: __test_pcs_ticket_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real ticket constraints configuration
               debug:
diff --git a/tests/tests_cib_properties_empty.yml b/tests/tests_cib_properties_empty.yml
index 5d6c74f4..74296b6b 100644
--- a/tests/tests_cib_properties_empty.yml
+++ b/tests/tests_cib_properties_empty.yml
@@ -23,7 +23,7 @@
           command:
             cmd: pcs property
           register: __test_pcs_property_config
-          changed_when: no
+          changed_when: false
 
         - name: Debug cluster properties configuration
           debug:
diff --git a/tests/tests_cib_properties_one_set.yml b/tests/tests_cib_properties_one_set.yml
index 08ef8096..ed71c9ac 100644
--- a/tests/tests_cib_properties_one_set.yml
+++ b/tests/tests_cib_properties_one_set.yml
@@ -26,7 +26,7 @@
           command:
             cmd: pcs property
           register: __test_pcs_property_config
-          changed_when: no
+          changed_when: false
 
         - name: Debug cluster properties configuration
           debug:
diff --git a/tests/tests_cib_resources_create.yml b/tests/tests_cib_resources_create.yml
index b4db6d9c..b62e41e6 100644
--- a/tests/tests_cib_resources_create.yml
+++ b/tests/tests_cib_resources_create.yml
@@ -178,7 +178,7 @@
     ha_cluster_resource_clones:
       - resource_id: dummy-clone-no-options
       - resource_id: dummy-clone-promotable
-        promotable: yes
+        promotable: true
       - resource_id: dummy-clone-id
         id: custom-clone-id1
       - resource_id: dummy-clone-empty-attrs1
@@ -192,7 +192,7 @@
               - name: target-role
                 value: Stopped
       - resource_id: dummy-clone-with-attrs2
-        promotable: yes
+        promotable: true
         id: custom-clone-id2
         meta_attrs:
           - attrs:
@@ -279,7 +279,7 @@
               command:
                 cmd: pcs stonith config
               register: __test_pcs_stonith_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real stonith configuration
               debug:
@@ -314,7 +314,7 @@
               command:
                 cmd: pcs --output-format=json stonith config
               register: __test_pcs_stonith_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real stonith configuration
               debug:
@@ -512,7 +512,7 @@
               command:
                 cmd: pcs resource config
               register: __test_pcs_resource_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real resource configuration
               debug:
@@ -756,7 +756,7 @@
               command:
                 cmd: pcs --output-format=json resource config
               register: __test_pcs_resource_config
-              changed_when: no
+              changed_when: false
 
             - name: Print real resource configuration
               debug:
diff --git a/tests/tests_cluster_basic_custom_packages.yml b/tests/tests_cluster_basic_custom_packages.yml
index f2b66c75..6d91303a 100644
--- a/tests/tests_cluster_basic_custom_packages.yml
+++ b/tests/tests_cluster_basic_custom_packages.yml
@@ -4,7 +4,7 @@
   hosts: all
   vars_files: vars/main.yml
   vars:
-    ha_cluster_cluster_present: no
+    ha_cluster_cluster_present: false
     __test_extra_package: pcs-snmp
     ha_cluster_extra_packages:
       - "{{ __test_extra_package }}"
diff --git a/tests/tests_cluster_basic_disabled.yml b/tests/tests_cluster_basic_disabled.yml
index 58e3562a..f3a71ad8 100644
--- a/tests/tests_cluster_basic_disabled.yml
+++ b/tests/tests_cluster_basic_disabled.yml
@@ -5,7 +5,7 @@
   vars_files: vars/main.yml
   vars:
     ha_cluster_cluster_name: test-cluster
-    ha_cluster_start_on_boot: no
+    ha_cluster_start_on_boot: false
 
   tasks:
     - block:
diff --git a/tests/tests_cluster_basic_new_psks.yml b/tests/tests_cluster_basic_new_psks.yml
index 30c5c7c0..2adb7b48 100644
--- a/tests/tests_cluster_basic_new_psks.yml
+++ b/tests/tests_cluster_basic_new_psks.yml
@@ -10,7 +10,7 @@
     # generate a new key for fence_xvm as there is no key present
     # generate a new TLS certificate - key pair for pcsd, even if there already
     #   is one
-    ha_cluster_regenerate_keys: yes
+    ha_cluster_regenerate_keys: true
     ha_cluster_corosync_key_src: "{{ playbook_dir }}/tmp/corosync-authkey"
     __test_pacemaker_key_content: key content to be replaced
     __test_pcsd_private_key_path: "{{ playbook_dir }}/tmp/pcsd.key"
diff --git a/tests/tests_cluster_destroy.yml b/tests/tests_cluster_destroy.yml
index 1b4e19f2..0b2141c3 100644
--- a/tests/tests_cluster_destroy.yml
+++ b/tests/tests_cluster_destroy.yml
@@ -3,7 +3,7 @@
 - name: Deconfigure cluster
   hosts: all
   vars:
-    ha_cluster_cluster_present: no
+    ha_cluster_cluster_present: false
 
   tasks:
     - block:
diff --git a/tests/tests_default.yml b/tests/tests_default.yml
index 5dada35b..f0a2f13b 100644
--- a/tests/tests_default.yml
+++ b/tests/tests_default.yml
@@ -14,7 +14,7 @@
             error_list: "{{
               ansible_failed_result.results | map(attribute='msg') | list
             }}"
-          run_once: yes
+          run_once: true
 
         - name: Check errors
           assert:
diff --git a/tests/tests_sbd_all_options.yml b/tests/tests_sbd_all_options.yml
index df4be8d7..de8f4965 100644
--- a/tests/tests_sbd_all_options.yml
+++ b/tests/tests_sbd_all_options.yml
@@ -5,7 +5,7 @@
   vars_files: vars/main.yml
   vars:
     ha_cluster_cluster_name: test-cluster
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
     ha_cluster_sbd_options:
       - name: delay-start
         value: 2s
diff --git a/tests/tests_sbd_check_devices_count.yml b/tests/tests_sbd_check_devices_count.yml
index 542db2cb..57227e9f 100644
--- a/tests/tests_sbd_check_devices_count.yml
+++ b/tests/tests_sbd_check_devices_count.yml
@@ -4,7 +4,7 @@
   hosts: all
   vars_files: vars/main.yml
   vars:
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
 
   tasks:
     - block:
@@ -37,7 +37,7 @@
                   ansible_failed_result.msg ==
                   'All nodes must have the same number of SBD devices specified'
                 }}"
-              run_once: yes
+              run_once: true
 
       when: ansible_play_hosts_all | length > 1
       always:
diff --git a/tests/tests_sbd_defaults.yml b/tests/tests_sbd_defaults.yml
index 6a48f8c6..16ec1759 100644
--- a/tests/tests_sbd_defaults.yml
+++ b/tests/tests_sbd_defaults.yml
@@ -5,7 +5,7 @@
   vars_files: vars/main.yml
   vars:
     ha_cluster_cluster_name: test-cluster
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
 
   tasks:
     - block:
@@ -55,7 +55,7 @@
           command:
             cmd: pcs quorum config
           register: __test_quorum_config
-          changed_when: no
+          changed_when: false
 
         - name: Check auto tie breaker in quorum configuration
           assert:
diff --git a/tests/tests_sbd_defaults_disabled.yml b/tests/tests_sbd_defaults_disabled.yml
index 10050e9a..714b57ca 100644
--- a/tests/tests_sbd_defaults_disabled.yml
+++ b/tests/tests_sbd_defaults_disabled.yml
@@ -5,8 +5,8 @@
   vars_files: vars/main.yml
   vars:
     ha_cluster_cluster_name: test-cluster
-    ha_cluster_start_on_boot: no
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_start_on_boot: false
+    ha_cluster_sbd_enabled: true
 
   tasks:
     - block:
diff --git a/tests/tests_sbd_needs_atb_while_atb_disabled.yml b/tests/tests_sbd_needs_atb_while_atb_disabled.yml
index 4c9c7c37..4f330dbc 100644
--- a/tests/tests_sbd_needs_atb_while_atb_disabled.yml
+++ b/tests/tests_sbd_needs_atb_while_atb_disabled.yml
@@ -4,7 +4,7 @@
   hosts: all
   vars_files: vars/main.yml
   vars:
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
     ha_cluster_quorum:
       options:
         - name: auto_tie_breaker
@@ -38,7 +38,7 @@
                   - ansible_failed_result.msg ==
                     'Cannot set auto_tie_breaker to disabled when SBD needs it '
                     ~ 'to be enabled'
-              run_once: yes
+              run_once: true
 
       when: ansible_play_hosts_all | length is even
       always:
diff --git a/tests/tests_sbd_needs_atb_while_atb_enabled.yml b/tests/tests_sbd_needs_atb_while_atb_enabled.yml
index da131aa4..358b327d 100644
--- a/tests/tests_sbd_needs_atb_while_atb_enabled.yml
+++ b/tests/tests_sbd_needs_atb_while_atb_enabled.yml
@@ -4,7 +4,7 @@
   hosts: all
   vars_files: vars/main.yml
   vars:
-    ha_cluster_sbd_enabled: yes
+    ha_cluster_sbd_enabled: true
     ha_cluster_quorum:
       options:
         - name: auto_tie_breaker
@@ -35,7 +35,7 @@
           command:
             cmd: pcs quorum config
           register: __test_quorum_config
-          changed_when: no
+          changed_when: false
 
         - name: Check auto tie breaker in quorum configuration
           assert:
diff --git a/vars/main.yml b/vars/main.yml
index 0a4a2ab6..f7197dba 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -29,7 +29,7 @@ __ha_cluster_services:
   - pacemaker
 
 # TODO: implement qdevice detection once qdevice is supported by the role
-__ha_cluster_qdevice_in_use: no
+__ha_cluster_qdevice_in_use: false
 
 # ansible_facts required by the role
 __ha_cluster_required_facts: