test out logrotate

helm/mail/templates/configmap-logrotate.yaml

@@ -0,0 +1,25 @@
+{{- if .Values.metrics.enabled }}
+{{- if .Values.metrics.logrotate.enabled }}
+{{- $chart := "mail" -}}
+{{- $labels := include (print $chart ".labels") . -}}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: logrotate-config
+  labels:
+    {{- $labels | nindent 4 }}
+data:
+  logrotate.conf: |
+    /var/log/mail.log {
+        rotate 1
+        monthly
+        minsize 1M
+        compress
+        missingok
+        notifempty
+        dateext
+        olddir /var/log/old
+        maxage 90
+    }
+{{- end }}
+{{- end }}

helm/mail/templates/statefulset.yaml

@@ -156,6 +156,15 @@ spec:
             - mountPath: /var/log/
               name: {{ $fullName }}
               subPath: logs
+        {{- if .Values.metrics.logrotate.enabled }}
+        - name: logrotate
+          image: blacklabelops/logrotate
+          volumeMounts:
+          - mountPath: /var/log
+            name: {{ $fullName }}
+          - mountPath: /etc/logrotate.d
+            name: logrotate-config
+        {{- end }}
         {{- end }}
         {{- if .Values.extraContainers }}
         {{- tpl .Values.extraContainers $root | nindent 8 }}
@@ -186,6 +195,14 @@ spec:
           secret:
             secretName: {{ $fullName }}-mount
         {{- end }}
+
+        {{- if .Values.metrics.enabled }}
+        {{- if .Values.metrics.logrotate.enabled }}
+        - name: logrotate-config
+          configMap:
+            name: logrotate-config
+        {{- end }}
+        {{- end }}
         {{- if .Values.extraVolumes }}{{- toYaml .Values.extraVolumes | nindent 8 }}{{ end }}
   {{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
   volumeClaimTemplates:

helm/mail/values.yaml

@@ -27,6 +27,8 @@ metrics:
   image: ""
   #This is what https://github.com/kumina/postfix_exporter is expecting, so setting as default
   maillog: /var/log/mail.log
+  logrotate:
+    enabled: true
 
 # Tell helm to restart (recreate) pods on every deploy. Setting this to true will inject
 # `date/deploy-date: <timestamp>` annotation into pod specification for StateFulset. This