Difference between revisions of "Kubernetes init containers (initContainers)"
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* https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#init-containers-in-use | * https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#init-containers-in-use | ||
apiVersion: v1 | apiVersion: v1 | ||
| − | kind: Pod | + | [[kind: Pod]] |
metadata: | metadata: | ||
name: myapp-pod | name: myapp-pod | ||
| Line 7: | Line 7: | ||
app: myapp | app: myapp | ||
spec: | spec: | ||
| − | containers: | + | [[containers:]] |
- name: myapp-container | - name: myapp-container | ||
image: busybox:1.28 | image: busybox:1.28 | ||
| Line 14: | Line 14: | ||
- name: init-myservice | - name: init-myservice | ||
image: busybox:1.28 | image: busybox:1.28 | ||
| − | command: ['sh', '-c', "until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done"] | + | command: ['sh', '-c', "[[until]] nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done"] |
- name: init-mydb | - name: init-mydb | ||
image: busybox:1.28 | image: busybox:1.28 | ||
command: ['sh', '-c', "until nslookup mydb.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"] | command: ['sh', '-c', "until nslookup mydb.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"] | ||
| + | == Examples == | ||
| − | + | {{init s3}} | |
| + | == Related == | ||
| + | * <code>[[kubectl get pod]] your-pod-name [[--template]]<nowiki> '{{.status.initContainerStatuses}}'</nowiki></code> | ||
| + | * <code>[[init:]], [[Init:0/1]]</code> | ||
| + | * <code>[[args:]]</code> | ||
| + | * [[Elasticsearch]]: <code>[[sysctl]] -w [[vm.max_map_count]]=262144</code> | ||
| + | * <code>[[Redis_values.yml]]</code> | ||
| + | * <code>[[aws-node]]</code> | ||
| + | * [[restartPolicy]] | ||
== See also == | == See also == | ||
| − | * {{ | + | * {{Kubectl init containers}} |
| − | * {{ | + | * {{Sidecar}} |
| − | * {{ | + | * {{kind: Pod}} |
[[Category:K8s]] | [[Category:K8s]] | ||
Latest revision as of 18:08, 27 October 2024
apiVersion: v1 kind: Pod metadata: name: myapp-pod labels: app: myapp spec: containers: - name: myapp-container image: busybox:1.28 command: ['sh', '-c', 'echo The app is running! && sleep 3600'] initContainers: - name: init-myservice image: busybox:1.28 command: ['sh', '-c', "until nslookup myservice.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done"] - name: init-mydb image: busybox:1.28 command: ['sh', '-c', "until nslookup mydb.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for mydb; sleep 2; done"]
Examples[edit]
initContainers:
- name: myname
image: public.ecr.aws/aws-cli/aws-cli
command: ["aws", "s3", "sync", "s3://mybucket", "/yourdir"]
volumeMounts:
- name: yourdir
mountPath: "/yourdir"
Related[edit]
kubectl get pod your-pod-name --template '{{.status.initContainerStatuses}}'init:, Init:0/1args:- Elasticsearch:
sysctl -w vm.max_map_count=262144 Redis_values.ymlaws-node- restartPolicy
See also[edit]
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