chart/docs/common-library/values/lifecycle.md

Lifecycle

Key: lifecycle

• Type: dict
• Default: {}
• Helm Template:
  • lifecycle.preStop.command - String: ✅
  • lifecycle.preStop.command - List entry: ✅
  • lifecycle.postStart.command - String: ✅
  • lifecycle.postStart.command - List entry: ✅

lifecycle key defines hooks that can run on the pod. Like preStop or postStart

Examples preStop:

# String / Single command
lifecycle:
  preStop:
    command: ./custom-script.sh
# String / Single command (tpl)
lifecycle:
  preStop:
    command: "{{ .Values.customCommand }}"

# List
lifecycle:
  preStop:
    command:
      - /bin/sh
      - -c
      - |
        echo "Doing things..."
# List (tpl)
lifecycle:
  preStop:
    command:
      - /path/to/executable
      - --port
      - "{{ .Values.service.main.ports.main.port }}"

Examples postStart:

# String / Single command
lifecycle:
  postStart:
    command: ./custom-script.sh
# String / Single command (tpl)
lifecycle:
  postStart:
    command: "{{ .Values.customCommand }}"

# List
lifecycle:
  postStart:
    command:
      - /bin/sh
      - -c
      - |
        echo "Doing things..."
# List (tpl)
lifecycle:
  postStart:
    command:
      - /path/to/executable
      - --port
      - "{{ .Values.service.main.ports.main.port }}"

Kubernetes Documentation:

• Lifecycle Hooks