Feature/12619 stable percona add affinity (#12640)

* refs: added affinity to percona chart

Signed-off-by: Daniele Piaggesi <daniele.piaggesi@bonsaimeme.com>

* refs: added variable docs in README.md

Signed-off-by: Daniele Piaggesi <daniele.piaggesi@bonsaimeme.com>

stable/percona/Chart.yaml

@@ -1,5 +1,5 @@
 name: percona
-version: 0.3.4
+version: 0.3.5
 appVersion: 5.7.17
 description: free, fully compatible, enhanced, open source drop-in replacement for
   MySQL

stable/percona/README.md

@@ -62,6 +62,7 @@ The following table lists the configurable parameters of the Percona chart and t
 | `resources`                | CPU/Memory resource requests/limits | Memory: `256Mi`, CPU: `100m`                              |
 | `nodeSelector`             | Node labels for pod assignment     | `{}`							|
 | `tolerations`              | Node labels for pod assignment     | `[]`							|
+| `affinity`                 | Node labels for pod assignment     | `{}`                            |
 
 Some of the parameters above map to the env variables defined in the [Percona Server DockerHub image](https://hub.docker.com/_/percona/).
 

stable/percona/templates/deployment.yaml

@@ -82,6 +82,10 @@ spec:
       nodeSelector:
 {{ toYaml .Values.nodeSelector | indent 8 }}
       {{- end -}}
+      {{- if .Values.affinity }}
+      affinity:
+{{ toYaml .Values.affinity | indent 8 }}
+      {{- end }}
       {{- if .Values.tolerations }}
       tolerations:
 {{ toYaml .Values.tolerations | indent 8 }}

stable/percona/values.yaml

@@ -1,6 +1,5 @@
 ## percona image
 ## ref: https://hub.docker.com/_/percona/
-##
 image: "percona"
 
 ## percona image version
@@ -64,3 +63,8 @@ nodeSelector: {}
 ## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
 ##
 tolerations: []
+
+## Affinity labels for pod assignment
+## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+##
+affinity: {}