[filebeat] add hostaliases

This commit allow to define hostAliases in Filebeat chart https://kubernetes.io/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases/
elastic · Dec 10, 2020 · ab54882 · ab54882
1 parent aa82c22
commit ab54882
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Showing 3 changed files with 12 additions and 2 deletions.
diff --git a/filebeat/README.md b/filebeat/README.md
@@ -91,6 +91,7 @@ as a reference. They are also used in the automated testing of this chart.
 | Parameter                   | Description                                                                                                                                                                     | Default                            |
 |-----------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------|
 | `affinity`                  | Configurable [affinity][]                                                                                                                                                       | `{}`                               |
+| `dnsConfig`                 | Configurable [dnsConfig][]                                                                                                                                                      | `{}`                               |
 | `envFrom`                   | Templatable string of envFrom to be passed to the [environment from variables][] which will be appended to the `envFrom:` definition for the container                          | `[]`                               |
 | `extraContainers`           | List of additional init containers to be added at the DaemonSet                                                                                                                 | `""`                               |
 | `extraEnvs`                 | Extra [environment variables][] which will be appended to the `env:` definition for the container                                                                               | `[]`                               |
@@ -99,8 +100,8 @@ as a reference. They are also used in the automated testing of this chart.
 | `extraVolumes`              | List of additional volumes to be mounted on the DaemonSet                                                                                                                       | `[]`                               |
 | `filebeatConfig`            | Allows you to add any config files in `/usr/share/filebeat` such as `filebeat.yml`                                                                                              | see [values.yaml][]                |
 | `fullnameOverride`          | Overrides the full name of the resources. If not set the name will default to " `.Release.Name` - `.Values.nameOverride or .Chart.Name` "                                       | `""`                               |
+| `hostAliases`               | Configurable [hostAliases][]                                                                                                                                                    | `[]`                               |
 | `hostNetworking`            | Use host networking in the DaemonSet so that hostname is reported correctly                                                                                                     | `false`                            |
-| `dnsConfig`                 | Configurable [dnsConfig][]                                                                                                                                                      | `{}`                               |
 | `hostPathRoot`              | Fully-qualified [hostPath][] that will be used to persist Filebeat registry data                                                                                                | `/var/lib`                         |
 | `imagePullPolicy`           | The Kubernetes [imagePullPolicy][] value                                                                                                                                        | `IfNotPresent`                     |
 | `imagePullSecrets`          | Configuration for [imagePullSecrets][] so that you can use a private registry for your image                                                                                    | `[]`                               |
@@ -191,6 +192,7 @@ about our development and testing process.
 [affinity]: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
 [annotations]: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
 [default Elasticsearch Helm chart]: https://github.com/elastic/helm-charts/tree/master/elasticsearch/README.md#default
+[dnsConfig]: https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/
 [environment variables]: https://kubernetes.io/docs/tasks/inject-data-application/define-environment-variable-container/#using-environment-variables-inside-of-your-config
 [environment from variables]: https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/#configure-all-key-value-pairs-in-a-configmap-as-container-environment-variables
 [examples]: https://github.com/elastic/helm-charts/tree/master/filebeat/examples
@@ -200,8 +202,8 @@ about our development and testing process.
 [filebeat oss docker image]: https://www.docker.elastic.co/r/beats/filebeat-oss
 [filebeat outputs]: https://www.elastic.co/guide/en/beats/filebeat/current/configuring-output.html
 [helm]: https://helm.sh
+[hostAliases]: https://kubernetes.io/docs/concepts/services-networking/add-entries-to-pod-etc-hosts-with-host-aliases/
 [hostNetwork]: https://kubernetes.io/docs/concepts/policy/pod-security-policy/#host-namespaces
-[dnsConfig]: https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/
 [hostPath]: https://kubernetes.io/docs/concepts/storage/volumes/#hostpath
 [imagePullPolicy]: https://kubernetes.io/docs/concepts/containers/images/#updating-images
 [imagePullSecrets]: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/#create-a-pod-that-uses-your-secret

diff --git a/filebeat/templates/daemonset.yaml b/filebeat/templates/daemonset.yaml
@@ -59,6 +59,9 @@ spec:
       {{- if .Values.dnsConfig }}
       dnsConfig: {{ toYaml .Values.dnsConfig | nindent 8 }}
       {{- end }}
+      {{- if .Values.hostAliases }}
+      hostAliases: {{ toYaml .Values.hostAliases | nindent 8 }}
+      {{- end }}
       volumes:
       {{- range .Values.secretMounts }}
       - name: {{ .name }}

diff --git a/filebeat/values.yaml b/filebeat/values.yaml
@@ -55,6 +55,11 @@ dnsConfig: {}
 # options:
 #   - name: ndots
 #     value: "2"
+hostAliases: []
+#- ip: "127.0.0.1"
+#  hostnames:
+#  - "foo.local"
+#  - "bar.local"
 image: "docker.elastic.co/beats/filebeat"
 imageTag: "8.0.0-SNAPSHOT"
 imagePullPolicy: "IfNotPresent"