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How to get the running pod name when there are other pods terminating?
I am using kubernetes cluster to run dev environments for myself and other developers. I have written a few shell functions to help everyone deal with their pods without typing long kubectl commands by hand. For example, to get a prompt on one of the pods, my functions use the following
kubectl exec -it $(kubectl get pods --selector=run=${service} --field-selector=status.phase=Running -o jsonpath="{.items[*].metadata.name}") -- bash;
where $service is set to a service label I want to access, like postgres or redis or uwsgi.
Since these are development environments there is always one of each types of pods. The problem I am having is that if I delete a pod to make it pull a fresh image (all pods are managed by deployments, so if I delete a pod it will create a new one), for a while there are two pods, one shows as terminating and the other as running in kubectl get pods output. I want to make sure that the command above selects the pod that is running and not the one terminating. I thought --field-selector=status.phase=Running flag would do it, but it does not. Apparently even if the pod is in the process of terminating it still reports Running status in status.phase field. What can I use to filter out terminating pods?
bash kubernetes kubectl
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
add a comment |
I am using kubernetes cluster to run dev environments for myself and other developers. I have written a few shell functions to help everyone deal with their pods without typing long kubectl commands by hand. For example, to get a prompt on one of the pods, my functions use the following
kubectl exec -it $(kubectl get pods --selector=run=${service} --field-selector=status.phase=Running -o jsonpath="{.items[*].metadata.name}") -- bash;
where $service is set to a service label I want to access, like postgres or redis or uwsgi.
Since these are development environments there is always one of each types of pods. The problem I am having is that if I delete a pod to make it pull a fresh image (all pods are managed by deployments, so if I delete a pod it will create a new one), for a while there are two pods, one shows as terminating and the other as running in kubectl get pods output. I want to make sure that the command above selects the pod that is running and not the one terminating. I thought --field-selector=status.phase=Running flag would do it, but it does not. Apparently even if the pod is in the process of terminating it still reports Running status in status.phase field. What can I use to filter out terminating pods?
bash kubernetes kubectl
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
add a comment |
I am using kubernetes cluster to run dev environments for myself and other developers. I have written a few shell functions to help everyone deal with their pods without typing long kubectl commands by hand. For example, to get a prompt on one of the pods, my functions use the following
kubectl exec -it $(kubectl get pods --selector=run=${service} --field-selector=status.phase=Running -o jsonpath="{.items[*].metadata.name}") -- bash;
where $service is set to a service label I want to access, like postgres or redis or uwsgi.
Since these are development environments there is always one of each types of pods. The problem I am having is that if I delete a pod to make it pull a fresh image (all pods are managed by deployments, so if I delete a pod it will create a new one), for a while there are two pods, one shows as terminating and the other as running in kubectl get pods output. I want to make sure that the command above selects the pod that is running and not the one terminating. I thought --field-selector=status.phase=Running flag would do it, but it does not. Apparently even if the pod is in the process of terminating it still reports Running status in status.phase field. What can I use to filter out terminating pods?
bash kubernetes kubectl
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
I am using kubernetes cluster to run dev environments for myself and other developers. I have written a few shell functions to help everyone deal with their pods without typing long kubectl commands by hand. For example, to get a prompt on one of the pods, my functions use the following
kubectl exec -it $(kubectl get pods --selector=run=${service} --field-selector=status.phase=Running -o jsonpath="{.items[*].metadata.name}") -- bash;
where $service is set to a service label I want to access, like postgres or redis or uwsgi.
Since these are development environments there is always one of each types of pods. The problem I am having is that if I delete a pod to make it pull a fresh image (all pods are managed by deployments, so if I delete a pod it will create a new one), for a while there are two pods, one shows as terminating and the other as running in kubectl get pods output. I want to make sure that the command above selects the pod that is running and not the one terminating. I thought --field-selector=status.phase=Running flag would do it, but it does not. Apparently even if the pod is in the process of terminating it still reports Running status in status.phase field. What can I use to filter out terminating pods?
bash kubernetes kubectl
bash kubernetes kubectl
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
asked Nov 21 '18 at 17:58
Mad WombatMad Wombat
6,53943565
6,53943565
add a comment |
add a comment |
1 Answer
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Use this one
$ kubectl exec -it $(kubectl get pods --selector=run=${service} | grep "running" | awk '{print $1}') -- bash;
or
$ kubectl exec -it $(kubectl get pods --selector=run=${service} -o=jsonpath='{.items[?(@.status.phase==“Running”)].metadata.name}') -- bash;
Ref: https://kubernetes.io/docs/reference/kubectl/jsonpath/
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Use this one
$ kubectl exec -it $(kubectl get pods --selector=run=${service} | grep "running" | awk '{print $1}') -- bash;
or
$ kubectl exec -it $(kubectl get pods --selector=run=${service} -o=jsonpath='{.items[?(@.status.phase==“Running”)].metadata.name}') -- bash;
Ref: https://kubernetes.io/docs/reference/kubectl/jsonpath/
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
add a comment |
Use this one
$ kubectl exec -it $(kubectl get pods --selector=run=${service} | grep "running" | awk '{print $1}') -- bash;
or
$ kubectl exec -it $(kubectl get pods --selector=run=${service} -o=jsonpath='{.items[?(@.status.phase==“Running”)].metadata.name}') -- bash;
Ref: https://kubernetes.io/docs/reference/kubectl/jsonpath/
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
add a comment |
Use this one
$ kubectl exec -it $(kubectl get pods --selector=run=${service} | grep "running" | awk '{print $1}') -- bash;
or
$ kubectl exec -it $(kubectl get pods --selector=run=${service} -o=jsonpath='{.items[?(@.status.phase==“Running”)].metadata.name}') -- bash;
Ref: https://kubernetes.io/docs/reference/kubectl/jsonpath/
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
Use this one
$ kubectl exec -it $(kubectl get pods --selector=run=${service} | grep "running" | awk '{print $1}') -- bash;
or
$ kubectl exec -it $(kubectl get pods --selector=run=${service} -o=jsonpath='{.items[?(@.status.phase==“Running”)].metadata.name}') -- bash;
Ref: https://kubernetes.io/docs/reference/kubectl/jsonpath/
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
edited Nov 21 '18 at 18:28
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
answered Nov 21 '18 at 18:21
Shudipta SharmaShudipta Sharma
1,177413
1,177413
add a comment |
add a comment |
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