vagrant: support custom yum repos for local caching

Add new global vars that support defining custom, possibly locally
caching, yum repos in place of the normal repos for epel, gluster, and
kubernetes pacakages. Add a new /etc/hosts tweaking variable to
support the custom yum server (and docker registry) better.

This has been tested running pulp on another VM.

Signed-off-by: John Mulligan <[email protected]>

vagrant/global_vars.yml

@@ -19,7 +19,7 @@ install_pkgs:
 - kubectl{{ kubernetes_version_tag }}
 - ntp
 # The following variables control the use and configuration of a custom docker
-# registry:
+# registry and/or custom rpm repositories:
 # * custom_registry: Specifies and enables a custom registry (default none)
 # * custom_registry_insecure: Marks the custom registry as insecure. This is
 #   typically the case if you're running a local registry on your host machine
@@ -37,9 +37,33 @@ install_pkgs:
 #   Valid values are 'present' and 'absent'. (default 'present')
 # * gcr_proxy_nginx: The version of nginx-slim to use for the gcr.io proxy.
 #   (default '0.8')
+# * custom_yum_repos: Define custom yum repos as mapping of repo names
+#   (short strings) to repo urls. One or more repo must be specified if this
+#   option is enabled. Using this option will disable the normal user of
+#   the centos epel, centos gluster, and google kubernetes repos.
+# * custom_host_aliases: If the custom_repos or registry refer to hostnames
+#   that cannot be resolved normally a custom_host_aliases variable can be
+#   used to add specific entries to /etc/hosts.
 #custom_registry: 192.168.10.1:5000
 #custom_registry_insecure: false
 #custom_registry_add: false
 #custom_registry_gcr: true
 #gcr_proxy_state: absent
 #gcr_proxy_nginx: 0.23
+#custom_yum_repos:
+#  kubernetes_el7: http://mypkgs/path/to/repo1
+#  epel_el7: http://mypkgs/path/to/repo2
+#  gluster_el7: http://mypkgs/another/repo/path/repo3
+#custom_host_aliases:
+#  - addr: 192.168.122.164
+#    names:
+#      - mypkgs
+#      - mypkgs.localdomain
+#      - rpms.example.com
+#  - addr: 192.168.122.168
+#    names:
+#      - marble
+#  - addr: 192.168.122.169
+#    names:
+#      - jimmy
+#      - cricket

vagrant/roles/common/tasks/main.yml

@@ -38,20 +38,44 @@
   - cache_exists.stat.exists == True
   - vagrant_cache
 
-- name: install centos and epel repos
-  yum:
-    name: "{{ item }}"
-    state: present
-  with_items:
-  - epel-release
-  - centos-release-gluster
-
-- name: setup kubernetes repo
-  yum_repository:
-    name: kubernetes
-    description: Kubernetes
-    baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
-    enabled: yes
+- name: customize hosts file
+  lineinfile: dest=/etc/hosts line="{{ item.addr }} {{ item.names | join(\" \") }}"
+  when: custom_host_aliases is defined
+  with_items: "{{ custom_host_aliases | default(omit) }}"
+
+- block:
+  # setup standard repos
+  - name: install centos and epel repos
+    yum:
+      name: "{{ item }}"
+      state: present
+    with_items:
+    - epel-release
+    - centos-release-gluster
+
+  - name: setup kubernetes repo
+    yum_repository:
+      name: kubernetes
+      description: Kubernetes
+      baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
+      enabled: yes
+  when: custom_repos is not defined
+
+- block:
+  - name: setup custom yum repos
+    yum_repository:
+      name: "{{ item.key }}"
+      description: "Custom-Repo-{{ item.key }}"
+      baseurl: "{{ item.value }}"
+      enabled: yes
+    with_dict: "{{ custom_yum_repos }}"
+
+  - name: disable yum fastestmirror plugin
+    lineinfile:
+      path: /etc/yum/pluginconf.d/fastestmirror.conf
+      regexp: "^enabled="
+      line: enabled=0
+  when: custom_yum_repos is defined
 
 - name: install base packages
   yum: