CODEWITHSUNDEEP
kubernetes
xudifsd
xudifsd

Reputation: 850

Is there a way in kubernetes to wait on daemonset ready

I'm not sure if there is a ready condition in DaemonSet. By that, I mean all pods owned by that DaemonSet are ready.

I'm aware of kubectl wait, but it seems can not check the readiness of DaemonSet.

Upvotes: 6

Views: 5911

Answers (3)

Sebastien Tardif
Sebastien Tardif

Reputation: 377

Simpler method from https://starkandwayne.com/blog/silly-kubectl-trick-5-waiting-for-things-to-finish-up-2/ ->

kubectl rollout status daemonset \
  rke2-ingress-nginx-controller \
  -n kube-system \
  --timeout 60s

Upvotes: 8

Anup Ash
Anup Ash

Reputation: 964

Try this out 

function wait-for-daemonset(){
    retries=10
    while [[ $retries -ge 0 ]];do
        sleep 3
        ready=$(kubectl -n $1 get daemonset $2 -o jsonpath="{.status.numberReady}")
        required=$(kubectl -n $1 get daemonset $2 -o jsonpath="{.status.desiredNumberScheduled}")
        if [[ $ready -eq $required ]];then
            #echo "Succeeded"
            break
        fi
        ((retries--))
    done
}

Upvotes: 2

Jakub Bujny
Jakub Bujny

Reputation: 4628

I would suggest to get pods from your DaemonSet by using following command:

kubectl get pods -l <daemonset-selector-key>=<daemonset-selector-value>

And then check status of those pods in loop looking if they are ready.

Upvotes: 3

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