automation-suite
2023.4
false
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Guide d'installation d'Automation Suite sur Linux
Last updated 2 oct. 2024

Rook Ceph ou pod Looker bloqué dans l'état Init

Code d'erreur

30001

Description

Parfois, lors du redémarrage du nœud, un problème provoque le blocage du pod Looker ou Rook Ceph dans l'état Init car le volume requis pour attacher le PVC à un pod est manquant.

Vérifiez si le problème est bien lié à Longhorn en exécutant la commande suivante :

kubectl get events -A -o json | jq -r '.items[] | select(.message != null) | select(.message | contains("cannot get resource \"volumeattachments\" in API group \"storage.k8s.io\""))'kubectl get events -A -o json | jq -r '.items[] | select(.message != null) | select(.message | contains("cannot get resource \"volumeattachments\" in API group \"storage.k8s.io\""))'

S'il est lié à Longhorn, cette commande doit renvoyer une liste des noms des pods concernés par le problème. Si la commande ne renvoie rien, la cause du problème est différente.

Solution

Exécutez le script suivant pour corriger les pods problématiques si la commande précédente renvoie une sortie non vide :

#!/bin/bash


function wait_till_rollout() {
    local namespace=$1
    local object_type=$2
    local deploy=$3

    local try=0
    local maxtry=2
    local status="notready"

    while [[ ${status} == "notready" ]]  && (( try != maxtry )) ; do
        kubectl -n "$namespace" rollout status "$deploy" -w --timeout=600s; 
        # shellcheck disable=SC2181
        if [[ "$?" -ne 0 ]]; 
        then
            status="notready"
            try=$((try+1))
        else
            status="ready"
        fi
    done
    if [[ $status == "notready" ]]; then 
        echo "$deploy of type $object_type failed in namespace $namespace. Plz re-run the script once again to verify that it's not a transient issue !!!"
        exit 1
    fi
}

function fix_pv_deployments() {
    for pod_name in $(kubectl get events -A -o json | jq -r '.items[]  | select(.message | contains("cannot get resource \"volumeattachments\" in API group \"storage.k8s.io\"")) | select(.involvedObject.kind == "Pod") | .involvedObject.name + "/" + .involvedObject.namespace' | sort | uniq)
    do
        POD_NAME=$(echo "${pod_name}" | cut -d '/' -f1)
        NS=$(echo "${pod_name}" | cut -d '/' -f2)
        controller_data=$(kubectl -n "${NS}" get po "${POD_NAME}" -o json | jq -r '[.metadata.ownerReferences[] | select(.controller==true)][0] | .kind + "=" + .name')
        [[ $controller_data == "" ]] && error "Error: Could not determine owner for pod: ${POD_NAME}" && exit 1
        CONTROLLER_KIND=$(echo "${controller_data}" | cut -d'=' -f1)
        CONTROLLER_NAME=$(echo "${controller_data}" | cut -d'=' -f2)
        if [[ $CONTROLLER_KIND == "ReplicaSet" ]]
        then
            controller_data=$(kubectl  -n "${NS}" get "${CONTROLLER_KIND}" "${CONTROLLER_NAME}" -o json | jq -r '[.metadata.ownerReferences[] | select(.controller==true)][0] | .kind + "=" + .name')
            CONTROLLER_KIND=$(echo "${controller_data}" | cut -d'=' -f1)
            CONTROLLER_NAME=$(echo "${controller_data}" | cut -d'=' -f2)

            replicas=$(kubectl -n "${NS}" get "$CONTROLLER_KIND" "$CONTROLLER_NAME" -o json | jq -r '.status.replicas')
            unavailable_replicas=$(kubectl -n "${NS}" get "$CONTROLLER_KIND" "$CONTROLLER_NAME" -o json | jq -r '.status.unavailableReplicas')

            if [ -n "$unavailable_replicas" ]; then 
                available_replicas=$((replicas - unavailable_replicas))
                if [ $available_replicas -eq 0 ]; then
                    kubectl -n "$NS" scale "$CONTROLLER_KIND" "$CONTROLLER_NAME" --replicas=0
                    sleep 15
                    kubectl -n "$NS" scale "$CONTROLLER_KIND" "$CONTROLLER_NAME" --replicas="$replicas"
                    deployment_name="$CONTROLLER_KIND/$CONTROLLER_NAME"
                    wait_till_rollout "$NS" "deploy" "$deployment_name"
                fi 
            fi
        fi
    done
}

fix_pv_deployments#!/bin/bash


function wait_till_rollout() {
    local namespace=$1
    local object_type=$2
    local deploy=$3

    local try=0
    local maxtry=2
    local status="notready"

    while [[ ${status} == "notready" ]]  && (( try != maxtry )) ; do
        kubectl -n "$namespace" rollout status "$deploy" -w --timeout=600s; 
        # shellcheck disable=SC2181
        if [[ "$?" -ne 0 ]]; 
        then
            status="notready"
            try=$((try+1))
        else
            status="ready"
        fi
    done
    if [[ $status == "notready" ]]; then 
        echo "$deploy of type $object_type failed in namespace $namespace. Plz re-run the script once again to verify that it's not a transient issue !!!"
        exit 1
    fi
}

function fix_pv_deployments() {
    for pod_name in $(kubectl get events -A -o json | jq -r '.items[]  | select(.message | contains("cannot get resource \"volumeattachments\" in API group \"storage.k8s.io\"")) | select(.involvedObject.kind == "Pod") | .involvedObject.name + "/" + .involvedObject.namespace' | sort | uniq)
    do
        POD_NAME=$(echo "${pod_name}" | cut -d '/' -f1)
        NS=$(echo "${pod_name}" | cut -d '/' -f2)
        controller_data=$(kubectl -n "${NS}" get po "${POD_NAME}" -o json | jq -r '[.metadata.ownerReferences[] | select(.controller==true)][0] | .kind + "=" + .name')
        [[ $controller_data == "" ]] && error "Error: Could not determine owner for pod: ${POD_NAME}" && exit 1
        CONTROLLER_KIND=$(echo "${controller_data}" | cut -d'=' -f1)
        CONTROLLER_NAME=$(echo "${controller_data}" | cut -d'=' -f2)
        if [[ $CONTROLLER_KIND == "ReplicaSet" ]]
        then
            controller_data=$(kubectl  -n "${NS}" get "${CONTROLLER_KIND}" "${CONTROLLER_NAME}" -o json | jq -r '[.metadata.ownerReferences[] | select(.controller==true)][0] | .kind + "=" + .name')
            CONTROLLER_KIND=$(echo "${controller_data}" | cut -d'=' -f1)
            CONTROLLER_NAME=$(echo "${controller_data}" | cut -d'=' -f2)

            replicas=$(kubectl -n "${NS}" get "$CONTROLLER_KIND" "$CONTROLLER_NAME" -o json | jq -r '.status.replicas')
            unavailable_replicas=$(kubectl -n "${NS}" get "$CONTROLLER_KIND" "$CONTROLLER_NAME" -o json | jq -r '.status.unavailableReplicas')

            if [ -n "$unavailable_replicas" ]; then 
                available_replicas=$((replicas - unavailable_replicas))
                if [ $available_replicas -eq 0 ]; then
                    kubectl -n "$NS" scale "$CONTROLLER_KIND" "$CONTROLLER_NAME" --replicas=0
                    sleep 15
                    kubectl -n "$NS" scale "$CONTROLLER_KIND" "$CONTROLLER_NAME" --replicas="$replicas"
                    deployment_name="$CONTROLLER_KIND/$CONTROLLER_NAME"
                    wait_till_rollout "$NS" "deploy" "$deployment_name"
                fi 
            fi
        fi
    done
}

fix_pv_deployments

  • Description
  • Solution

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