Advanced Attribute Settings

This article introduces how to set advanced Kubernetes attributes for components, such as: privileged, affinity, etc.

Set Kubernetes Advanced Attributes

In the component's other settings, you can set advanced Kubernetes attributes.When adding all attributes, there is no need to define the attribute name at the beginning, just add the attribute directly.

• nodeSelector Schedule to the specified node

• labels Labels

• volumes Storage volumes, example as follows

  • name: config-vol configMap: name: log-config items:
    • key: log_level path: log_level

• volumeMounts Volume mounts, example as follows

  • mountPath: /data name: redis-data

• affinity Affinity, example as follows

  nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: nodeSelectorTerms:

  • matchExpressions:
    • key: kubernetes.io/hostname operator: NotIn values:
      • node3

• tolerations Tolerations, example as follows:

  • key: "key1" operator: "Equal" value: "value1" effect: "NoSchedule" tolerationSeconds

• Set serviceAccountName Service Account

• privileged Privileged mode

• env Environment variables, example as follows:

  • name: Version value: v5.8
  • name: NGINX_USERNAEM valueFrom: secretKeyRef: name: nginx-secret key: username optional: false
  • name: NGINX_PASSWORD valueFrom: secretKeyRef: name: nginx-secret key: password optional: false
  • name: MY_POD_IP valueFrom: fieldRef: fieldPath: status.podIP

• shareProcessNamespace Share Process Namespace

• dnsPolicy DNS Policy, example as follows:

  nameservers:

  • 1.2.3.4 searches:
  • ns1.svc.cluster-domain.example
  • my.dns.search.suffix options:
  • name: ndots value: "2"
  • name: edns0

• resources Resource limits, example as follows:

  requests: memory: "1024Mi" cpu: "500m" limits: memory: "512Mi" cpu: "100m"

• hostIPC Controls whether the container can share the host's IPC namespace

• lifecycle Container lifecycle event setting handler, example as follows:

  postStart: exec: command: ["/bin/sh", "-c", "echo Hello from the postStart handler > /usr/share/message"] preStop: exec: command: ["/bin/sh","-c","nginx -s quit; while killall -0 nginx; do sleep 1; done"]

• hostAliases allows adding custom hostnames and corresponding IP addresses in the container's /etc/hosts file.Example as follows:

  • ip: "192.168.1.1" hostnames:
  • "alias1.example.com"
  • "alias2.example.com"
  • ip: "192.168.1.2" hostnames:
  • "alias3.example.com"