added Don früh

k8s/pods

@@ -13,4 +13,58 @@ kubectl run whoami --image bee42/whoami:2.2.0 --expose --port 80
 kubectl get pod whoami -o yaml
 
 # kann zur erstellung der YAML genutzt werden. 
-kubectl run whoami2 --image bee42/whoami:2.2.0 --labels=run=whoami --dry-run=client -o yaml >whoami-pod.yaml
+kubectl run whoami2 --image bee42/whoami:2.2.0 --labels=run=whoami --dry-run=client -o yaml >whoami-pod.yaml
+
+# Show Labels
+kubectl get pods --show-labels
+
+# Test iin Pod
+kubectl run curl --tty -i --image curlimages/curl -- /bin/sh
+curl -i http://nginx
+
+# port weiterleiten 
+kubectl port-forward services/nginx 8091:80 &
+
+# scale Pods
+
+kubectl scale deployments/web --replicas=3
+
+kubectl set image deployment/web nginx=nginx:1.19.4  
+kubectl rollout status -w deployment/web
+kubectl rollout undo deployment/web
+kubectl rollout status -w deployment/web
+kubectl rollout history deployment/web
+kubectl rollout undo deployment/web --to-revision=1
+
+# Better annotate replicaset !!
+kubectl annotate deployment web kubernetes.io/change-cause="Release 1.19.3" --overwrite=true
+
+#or
+
+kubectl get rs
+NAME             DESIRED   CURRENT   READY   AGE
+web-85dfdff5d    0         0         0       28m
+web-548df7676c   0         0         0       46m
+web-6f4f87dd45   3         3         3       26m
+kubectl annotate rs web-6f4f87dd45  kubernetes.io/change-cause="Release 1.19.5" --overwrite=true
+kubectl rollout history deploy web
+deployment.apps/web 
+REVISION  CHANGE-CAUSE
+4         <none>
+5         <none>
+6         Release 1.19.5
+# new deployment
+
+kubectl get rs -o json |jq -r .items[].metadata.annotations.\"deployment.kubernetes.io/revision\"
+3
+6
+5
+
+
+
+#cat pod.json | kubectl replace -f -
+#kubectl replace --force -f ./pod.json
+kubectl get pods
+kubectl get pod <web pod> -o yaml | sed 's/\(image: nginx\):.*$/\1:1.19.3/' | kubectl replace -f -
+
+#kubectl get pod web-548df7676c-v48kv -o yaml | sed 's/\(image: nginx\):.*$/\1:1.19.4/' | kubectl replace -f - web-548df7676c-rzp7v