166 lines
1.9 KiB
ReStructuredText
166 lines
1.9 KiB
ReStructuredText
**********
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Kubernetes
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**********
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Pods
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====
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Read
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----
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.. code:: shell
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kubectl \
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get pods \
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-n my-namespace
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Execute
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-------
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.. code:: shell
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kubectl \
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run my-pod \
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--image my-image \
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--restart Never \
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-n my-namespace
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Write
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-----
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.. code:: shell
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kubectl edit \
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pod my-pod \
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-n my-namespace
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.. code:: shell
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kubectl delete \
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pod my-pod \
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-n my-namespace \
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--grace-period 0
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Deployments
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===========
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Read
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----
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.. code:: shell
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kubectl get \
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deploy my-deployment \
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-n my-namespace \
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-o wide
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.. code:: shell
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kubectl get \
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deployments \
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-n my-namespace
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Execute
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-------
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.. code:: shell
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kubectl create \
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deploy my-deployment \
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--image my-image \
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-n my-namespace
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.. code:: yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: my-deployment
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spec:
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replicas: 2
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template:
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metadata:
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labels:
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app: my-app
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spec:
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containers:
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- name: my-container
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image: my-image
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Write
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-----
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.. code:: shell
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kubectl \
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set image \
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deployment/my-deployment \
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my-app=my-app:1.0.1 \
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-n my-namespace
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.. code:: shell
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kubectl \
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delete deploy my-deployment \
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-n my-namespace
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Scale
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-----
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.. code:: shell
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kubectl \
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scale deploy my-deployment \
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--replicas 3 \
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-n my-namespace
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Services
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========
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* ClusterIP (internal)
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* ExternalName (internal alias for external DNS)
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* LoadBalancer (external dedicated IP) [if available]
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* NodePort (exposed via node)
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Read
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----
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.. code:: shell
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kubectl \
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get services \
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-n my-namespace
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.. code:: shell
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kubectl \
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get service my-service \
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-n my-namespace
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Write
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-----
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.. code:: shell
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kubectl \
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expose deployment my-deployment \
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--type LoadBalancer \
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--name my-load-balancer \
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--target-port 8080 \
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-n my-namespace
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.. code:: shell
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kubectl \
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delete service my-service \
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-n my-namespace
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.. code:: shell
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kubectl \
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edit service my-service \
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-n my-namespace
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.. warning::
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ClusterIP is immutable!
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