feat: allow define & run custom scripts while startup

Author: nefelim4ag

charts/k8s-ssh-bastion/Chart.yaml

@@ -2,4 +2,4 @@ apiVersion: v1
 appVersion: 0.3.0
 description: A Helm chart for k8s bastion
 name: k8s-ssh-bastion
-version: 0.3.5
+version: 0.3.6

charts/k8s-ssh-bastion/templates/deployment.yaml

@@ -48,6 +48,12 @@ spec:
 
               mkdir -p /run/sshd
 
+              {{- with .Values.initscripts }}
+              {{- range $key, $value := . }}
+              {{ $key }}
+              {{- end }}
+              {{- end }}
+
               /usr/sbin/sshd -D -e -E /proc/1/fd/1
           lifecycle: {{ .Values.lifecycle | toJson }}
           ports:
@@ -61,6 +67,8 @@ spec:
             mountPath: /etc/ssh
           - name: sshd-configs-origin
             mountPath: /etc/ssh_origin
+          - name: usr-share-initscripts
+            mountPath: /usr/share/initscripts
           resources:
 {{ toYaml .Values.resources | indent 12 }}
       hostNetwork: {{ .Values.hostNetwork }}
@@ -84,6 +92,10 @@ spec:
       - name: sshd-configs-origin
         configMap:
           name: {{ .Release.Name }}-etc-ssh-origin
+      - name: usr-share-startup
+        configMap:
+          name: {{ .Release.Name }}-usr-share-initscripts
+          defaultMode: 0755
 ---
 apiVersion: v1
 kind: ConfigMap
@@ -100,6 +112,15 @@ metadata:
 data:
 {{ tpl (toYaml .Values.ssh) $ | indent 2 }}
 
+---
+# Additional startup commands
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ .Release.Name }}-usr-share-initscripts
+data:
+{{ tpl (toYaml .Values.initscripts) $ | indent 2 }}
+
 ---
 # Used to store ssh host keys & other stuff
 apiVersion: v1

charts/k8s-ssh-bastion/values.yaml

@@ -56,6 +56,11 @@ topologySpreadConstraints:
 
 storageClass: "efs"
 
+initscripts: {}
+  # install-tools.sh: |
+  #   #!/bin/bash
+  #   echo do something
+
 # Override files under /etc/ssh
 ssh:
   banner: |