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Konfigurace a nasazení clusteru Valkey ve službě Azure Kubernetes Service (AKS)

V tomto článku nakonfigurujeme a nasadíme cluster Valkey ve službě Azure Kubernetes Service (AKS).

Poznámka:

Tento článek obsahuje odkazy na termíny master a slave, což jsou termíny, které už Microsoft nepoužívá. Když se termín odebere ze softwaru Valkey, odebereme ho z tohoto článku.

Vytvoření oboru názvů

  1. Pomocí příkazu vytvořte obor názvů pro cluster kubectl create namespace Valkey.

    kubectl create namespace ${SERVICE_ACCOUNT_NAMESPACE} --dry-run=client --output yaml | kubectl apply -f -
    

    Příklad výstupu:

    namespace/valkey created
    

Vytváření tajných kódů

  1. Vygenerujte náhodné heslo pro cluster Valkey pomocí openssl a uložte ho do trezoru az keyvault secret set klíčů Azure pomocí příkazu. Nastavte zásadu tak, aby identita přiřazená uživatelem mohla získat tajný kód pomocí az keyvault set-policy příkazu.

    SECRET=$(openssl rand -base64 32)
    echo requirepass $SECRET > /tmp/valkey-password-file.conf
    echo primaryauth $SECRET >> /tmp/valkey-password-file.conf
    az keyvault secret set --vault-name $MY_KEYVAULT_NAME --name valkey-password-file --file /tmp/valkey-password-file.conf --output table
    rm /tmp/valkey-password-file.conf
    az keyvault set-policy --name $MY_KEYVAULT_NAME --object-id $userAssignedObjectID --secret-permissions get --output table
    
  2. Pomocí příkazu vytvořte SecretProviderClass prostředek pro přístup k heslu Valkey uloženému v trezoru kubectl apply klíčů.

    kubectl apply -f - <<EOF
    ---
    apiVersion: secrets-store.csi.x-k8s.io/v1
    kind: SecretProviderClass
    metadata:
      name: valkey-password
      namespace: valkey
    spec:
      provider: azure
      parameters:
        usePodIdentity: "false"
        useVMManagedIdentity: "true"
        userAssignedIdentityID: "${userAssignedIdentityID}"
        keyvaultName: ${MY_KEYVAULT_NAME}              # the name of the AKV instance
        objects: |
          array:
            - |
              objectName: valkey-password-file
              objectAlias: valkey-password-file.conf
              objectType: secret
        tenantId: "${TENANT_ID}" # the tenant ID of the AKV instance
    EOF
    

Nasazení clusteru Valkey

  1. Vytvořte ConfigMap připojení jako svazek ve Valkey StatefulSet , který se použije ke konfiguraci clusteru Valkey pomocí kubectl apply příkazu.

    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: ConfigMap
    metadata:
      name: valkey-cluster
      namespace: valkey
    data:
      valkey.conf:  |+
        cluster-enabled yes
        cluster-node-timeout 15000
        cluster-config-file /data/nodes.conf
        appendonly yes
        protected-mode yes
        dir /data
        port 6379
        include /etc/valkey-password/valkey-password-file.conf
    EOF
    

    Příklad výstupu:

    configmap/valkey-cluster created
    
  2. StatefulSet Vytvoření prostředku s spec.affinity cílem je zachovat všechny primarie v zóně 1 a 2, nejlépe v různých uzlech, pomocí kubectl apply příkazu.

    kubectl apply -f - <<EOF
    ---
    apiVersion: apps/v1
    kind: StatefulSet
    metadata:
      name: valkey-masters
      namespace: valkey
    spec:
      serviceName: "valkey-masters"
      replicas: 3
      selector:
        matchLabels:
          app: valkey
      template:
        metadata:
          labels:
            app: valkey
            appCluster: valkey-masters
        spec:
          terminationGracePeriodSeconds: 20
          affinity:
            nodeAffinity:
              requiredDuringSchedulingIgnoredDuringExecution:
                nodeSelectorTerms:
                - matchExpressions:
                  - key: agentpool
                    operator: In
                    values:
                    - valkey
                  - key: topology.kubernetes.io/zone
                    operator: In
                    values:
                    - ${MY_LOCATION}-1
                - matchExpressions:
                  - key: agentpool
                    operator: In
                    values:
                    - valkey
                  - key: topology.kubernetes.io/zone
                    operator: In
                    values:
                    - ${MY_LOCATION}-2
            podAntiAffinity:
              preferredDuringSchedulingIgnoredDuringExecution:
              - weight: 90
                podAffinityTerm:
                  labelSelector:
                    matchExpressions:
                    - key: app
                      operator: In
                      values:
                      - valkey
                  topologyKey: topology.kubernetes.io/zone
              - weight: 90
                podAffinityTerm:
                  labelSelector:
                    matchExpressions:
                    - key: app
                      operator: In
                      values:
                      - valkey
                  topologyKey: kubernetes.io/hostname
          containers:
          - name: valkey
            image: "${MY_ACR_REGISTRY}.azurecr.io/valkey:latest"
            env:
            - name: VALKEY_PASSWORD_FILE
              value: "/etc/valkey-password/valkey-password-file.conf"
            - name: MY_POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            command:
              - "valkey-server"
            args:
              - "/conf/valkey.conf"
              - "--cluster-announce-ip"
              - "\$(MY_POD_IP)"
            resources:
              requests:
                cpu: "100m"
                memory: "100Mi"
            ports:
                - name: valkey
                  containerPort: 6379
                  protocol: "TCP"
                - name: cluster
                  containerPort: 16379
                  protocol: "TCP"
            volumeMounts:
            - name: conf
              mountPath: /conf
              readOnly: false
            - name: data
              mountPath: /data
              readOnly: false
            - name: valkey-password
              mountPath: /etc/valkey-password
              readOnly: true
          volumes:
          - name: valkey-password
            csi:
              driver: secrets-store.csi.k8s.io
              readOnly: true
              volumeAttributes:
                secretProviderClass: valkey-password
          - name: conf
            configMap:
              name: valkey-cluster
              defaultMode: 0755
      volumeClaimTemplates:
      - metadata:
          name: data
        spec:
          accessModes: [ "ReadWriteOnce" ]
          storageClassName: managed-csi-premium
          resources:
            requests:
              storage: 20Gi
    EOF
    

    Příklad výstupu:

    statefulset.apps/valkey-masters created
    
  3. Vytvořte druhý StatefulSet prostředek pro sekundární soubory Valkey s spec.affinity cílem zachovat všechny repliky v zóně 3, nejlépe v různých uzlech, pomocí kubectl apply příkazu.

    kubectl apply -f - <<EOF
    ---
    apiVersion: apps/v1
    kind: StatefulSet
    metadata:
      name: valkey-replicas
      namespace: valkey
    spec:
      serviceName: "valkey-replicas"
      replicas: 3
      selector:
        matchLabels:
          app: valkey
      template:
        metadata:
          labels:
            app: valkey
            appCluster: valkey-replicas
        spec:
          terminationGracePeriodSeconds: 20
          affinity:
            nodeAffinity:
              requiredDuringSchedulingIgnoredDuringExecution:
                nodeSelectorTerms:
                - matchExpressions:
                  - key: agentpool
                    operator: In
                    values:
                    - valkey
                  - key: topology.kubernetes.io/zone
                    operator: In
                    values:
                    - ${MY_LOCATION}-3
            podAntiAffinity:
              preferredDuringSchedulingIgnoredDuringExecution:
              - weight: 90
                podAffinityTerm:
                  labelSelector:
                    matchExpressions:
                    - key: app
                      operator: In
                      values:
                      - valkey
                  topologyKey: kubernetes.io/hostname
          containers:
          - name: valkey
            image: "${MY_ACR_REGISTRY}.azurecr.io/valkey:latest"
            env:
            - name: VALKEY_PASSWORD_FILE
              value: "/etc/valkey-password/valkey-password-file.conf"
            - name: MY_POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            command:
              - "valkey-server"
            args:
              - "/conf/valkey.conf"
              - "--cluster-announce-ip"
              - "\$(MY_POD_IP)"
            resources:
              requests:
                cpu: "100m"
                memory: "100Mi"
            ports:
                - name: valkey
                  containerPort: 6379
                  protocol: "TCP"
                - name: cluster
                  containerPort: 16379
                  protocol: "TCP"
            volumeMounts:
            - name: conf
              mountPath: /conf
              readOnly: false
            - name: data
              mountPath: /data
              readOnly: false
            - name: valkey-password
              mountPath: /etc/valkey-password
              readOnly: true
          volumes:
          - name: valkey-password
            csi:
              driver: secrets-store.csi.k8s.io
              readOnly: true
              volumeAttributes:
                secretProviderClass: valkey-password
          - name: conf
            configMap:
              name: valkey-cluster
              defaultMode: 0755
      volumeClaimTemplates:
      - metadata:
          name: data
        spec:
          accessModes: [ "ReadWriteOnce" ]
          storageClassName: managed-csi-premium
          resources:
            requests:
              storage: 20Gi
    EOF
    

    Příklad výstupu:

    statefulset.apps/valkey-replicas created
    
  4. Pomocí příkazů ověřte, že master-N a replica-N běží v různých uzlech a kubectl get pods zónáchkubectl get nodes.

    kubectl get pods -n valkey -o wide
    kubectl get node -o custom-columns=Name:.metadata.name,Zone:".metadata.labels.topology\.kubernetes\.io/zone"
    

    Příklad výstupu:

    NAME                READY   STATUS    RESTARTS   AGE     IP             NODE                             NOMINATED NODE   READINESS GATES
    valkey-masters-0    1/1     Running   0          2m55s   10.224.0.4     aks-valkey-18693609-vmss000004   <none>           <none>
    valkey-masters-1    1/1     Running   0          2m31s   10.224.0.137   aks-valkey-18693609-vmss000000   <none>           <none>
    valkey-masters-2    1/1     Running   0          2m7s    10.224.0.222   aks-valkey-18693609-vmss000001   <none>           <none>
    valkey-replicas-0   1/1     Running   0          88s     10.224.0.237   aks-valkey-18693609-vmss000005   <none>           <none>
    valkey-replicas-1   1/1     Running   0          70s     10.224.0.18    aks-valkey-18693609-vmss000002   <none>           <none>
    valkey-replicas-2   1/1     Running   0          48s     10.224.0.242   aks-valkey-18693609-vmss000005   <none>           <none>
    Name                                Zone
    aks-nodepool1-17621399-vmss000000   centralus-1
    aks-nodepool1-17621399-vmss000001   centralus-2
    aks-nodepool1-17621399-vmss000003   centralus-3
    aks-valkey-18693609-vmss000000      centralus-1
    aks-valkey-18693609-vmss000001      centralus-2
    aks-valkey-18693609-vmss000002      centralus-3
    aks-valkey-18693609-vmss000003      centralus-1
    aks-valkey-18693609-vmss000004      centralus-2
    aks-valkey-18693609-vmss000005      centralus-3
    

    Než budete pokračovat k dalšímu kroku, počkejte na spuštění všech podů.

  5. Vytvořte tři bezobsedné Service prostředky (první pro celý cluster, druhý pro primární a třetí pro sekundáře), které se použijí k získání IP adres podů Valkey pomocí kubectl apply příkazu.

    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: Service
    metadata:
      name: valkey-cluster
      namespace: valkey
    spec:
      clusterIP: None
      ports:
      - name: valkey-port
        port: 6379
        protocol: TCP
        targetPort: 6379
      selector:
        app: valkey
      sessionAffinity: None
      type: ClusterIP
    EOF
    
    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: Service
    metadata:
      name: valkey-masters
      namespace: valkey
    spec:
      clusterIP: None
      ports:
      - name: valkey-port
        port: 6379
        protocol: TCP
        targetPort: 6379
      selector:
        app: valkey
        appCluster: valkey-masters
      sessionAffinity: None
      type: ClusterIP
    EOF
    
    kubectl apply -f - <<EOF
    apiVersion: v1
    kind: Service
    metadata:
      name: valkey-replicas
      namespace: valkey
    spec:
      clusterIP: None
      ports:
      - name: valkey-port
        port: 6379
        protocol: TCP
        targetPort: 6379
      selector:
        app: valkey
        appCluster: valkey-replicas
      sessionAffinity: None
      type: ClusterIP
    EOF
    

    Příklad výstupu:

    service/valkey-cluster created
    service/valkey-masters created
    service/valkey-replicas created
    

Spuštění clusteru Valkey

  1. Pomocí příkazu přidejte do clusteru kubectl exec primarie Valkey v zóně 1 a 2.

    kubectl exec -it -n valkey valkey-masters-0 -- valkey-cli --cluster create --cluster-yes --cluster-replicas 0 \
                        valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379 \
                        valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379 \
                        valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379 \
                        --pass ${SECRET}
    

    Příklad výstupu:

    >>> Performing hash slots allocation on 3 nodes...
    Master[0] -> Slots 0 - 5460
    Master[1] -> Slots 5461 - 10922
    Master[2] -> Slots 10923 - 16383
    M: ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35 valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379
       slots:[0-5460] (5461 slots) master
    M: fd1fb98db83976478e05edd3d2a02f9a13badd80 valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379
       slots:[5461-10922] (5462 slots) master
    M: ea47bf57ae7080ef03164a4d48b662c7b4c8770e valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379
       slots:[10923-16383] (5461 slots) master
    >>> Nodes configuration updated
    >>> Assign a different config epoch to each node
    >>> Sending CLUSTER MEET messages to join the cluster
    Waiting for the cluster to join
    ...
    >>> Performing Cluster Check (using node valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379)
    M: ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35 valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379
       slots:[0-5460] (5461 slots) master
    M: ea47bf57ae7080ef03164a4d48b662c7b4c8770e 10.224.0.176:6379
       slots:[10923-16383] (5461 slots) master
    M: fd1fb98db83976478e05edd3d2a02f9a13badd80 10.224.0.247:6379
       slots:[5461-10922] (5462 slots) master
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.
    
  2. Pomocí příkazu přidejte do clusteru kubectl exec repliky Valkey v zóně 3.

    kubectl exec -ti -n valkey valkey-masters-0 -- valkey-cli --cluster add-node \
                        valkey-replicas-0.valkey-replicas.valkey.svc.cluster.local:6379 \
                        valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379  --cluster-slave \
                        --pass ${SECRET}
    
    kubectl exec -ti -n valkey valkey-masters-0 -- valkey-cli --cluster add-node \
                        valkey-replicas-1.valkey-replicas.valkey.svc.cluster.local:6379 \
                        valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379  --cluster-slave \
                        --pass ${SECRET}
    
    kubectl exec -ti -n valkey valkey-masters-0 -- valkey-cli --cluster add-node \
                        valkey-replicas-2.valkey-replicas.valkey.svc.cluster.local:6379 \
                        valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379  --cluster-slave \
                        --pass ${SECRET}
    

    Příklad výstupu:

    >>> Adding node valkey-replicas-0.valkey-replicas.valkey.svc.cluster.local:6379 to cluster valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379
    >>> Performing Cluster Check (using node valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379)
    M: ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35 valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379
       slots:[0-5460] (5461 slots) master
    M: ea47bf57ae7080ef03164a4d48b662c7b4c8770e 10.224.0.176:6379
       slots:[10923-16383] (5461 slots) master
    M: fd1fb98db83976478e05edd3d2a02f9a13badd80 10.224.0.247:6379
       slots:[5461-10922] (5462 slots) master
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.
    Automatically selected master valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379
    >>> Send CLUSTER MEET to node valkey-replicas-0.valkey-replicas.valkey.svc.cluster.local:6379 to make it join the cluster.
    Waiting for the cluster to join
    
    >>> Configure node as replica of valkey-masters-0.valkey-masters.valkey.svc.cluster.local:6379.
    [OK] New node added correctly.
    >>> Adding node valkey-replicas-1.valkey-replicas.valkey.svc.cluster.local:6379 to cluster valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379
    >>> Performing Cluster Check (using node valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379)
    M: fd1fb98db83976478e05edd3d2a02f9a13badd80 valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379
       slots:[5461-10922] (5462 slots) master
    S: 0ebceb60cbcc31da9040159440a1f4856b992907 10.224.0.224:6379
       slots: (0 slots) slave
       replicates ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35
    M: ea47bf57ae7080ef03164a4d48b662c7b4c8770e 10.224.0.176:6379
       slots:[10923-16383] (5461 slots) master
    M: ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35 10.224.0.14:6379
       slots:[0-5460] (5461 slots) master
       1 additional replica(s)
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.
    Automatically selected master valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379
    >>> Send CLUSTER MEET to node valkey-replicas-1.valkey-replicas.valkey.svc.cluster.local:6379 to make it join the cluster.
    Waiting for the cluster to join
    
    >>> Configure node as replica of valkey-masters-1.valkey-masters.valkey.svc.cluster.local:6379.
    [OK] New node added correctly.
    >>> Adding node valkey-replicas-2.valkey-replicas.valkey.svc.cluster.local:6379 to cluster valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379
    >>> Performing Cluster Check (using node valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379)
    M: ea47bf57ae7080ef03164a4d48b662c7b4c8770e valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379
       slots:[10923-16383] (5461 slots) master
    S: 0ebceb60cbcc31da9040159440a1f4856b992907 10.224.0.224:6379
       slots: (0 slots) slave
       replicates ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35
    S: fa44edff683e2e01ee5c87233f9f3bc35c205dce 10.224.0.103:6379
       slots: (0 slots) slave
       replicates fd1fb98db83976478e05edd3d2a02f9a13badd80
    M: ee6ac1d00d3f016b6f46c7ce11199bc1a7809a35 10.224.0.14:6379
       slots:[0-5460] (5461 slots) master
       1 additional replica(s)
    M: fd1fb98db83976478e05edd3d2a02f9a13badd80 10.224.0.247:6379
       slots:[5461-10922] (5462 slots) master
       1 additional replica(s)
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.
    Automatically selected master valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379
    >>> Send CLUSTER MEET to node valkey-replicas-2.valkey-replicas.valkey.svc.cluster.local:6379 to make it join the cluster.
    Waiting for the cluster to join
    
    >>> Configure node as replica of valkey-masters-2.valkey-masters.valkey.svc.cluster.local:6379.
    [OK] New node added correctly.
    
  3. Pomocí následujících příkazů ověřte role podů:

    for x in $(seq 0 2); do echo "valkey-masters-$x"; kubectl exec -n valkey valkey-masters-$x  -- valkey-cli --pass ${SECRET} role; echo; done
    for x in $(seq 0 2); do echo "valkey-replicas-$x"; kubectl exec -n valkey valkey-replicas-$x -- valkey-cli --pass ${SECRET} role; echo; done
    

    Příklad výstupu:

    valkey-masters-0
    master
    84
    10.224.0.224
    6379
    84
    
    valkey-masters-1
    master
    84
    10.224.0.103
    6379
    84
    
    valkey-masters-2
    master
    70
    10.224.0.200
    6379
    70
    
    valkey-replicas-0
    slave
    10.224.0.14
    6379
    connected
    98
    
    valkey-replicas-1
    slave
    10.224.0.247
    6379
    connected
    98
    
    valkey-replicas-2
    slave
    10.224.0.176
    6379
    connected
    84
    

Další kroky

Další informace o nasazení opensourcového softwaru ve službě Azure Kubernetes Service (AKS) najdete v následujících článcích:

Přispěvatelé

Microsoft udržuje tento článek. Následující přispěvatelé ho původně napsali:

  • Nelly Kiboi | Servisní technik
  • Saverio Proto | Hlavní technik zákaznického prostředí
  • Don High | Hlavní zákaznický inženýr
  • LaBrina Láska | Instanční inženýr
  • Ken Kilty | Hlavní čip TPM
  • Russell de Pina | Hlavní čip TPM
  • Colin Mixon | Product Manager
  • Ketan Chawda | Vedoucí zákaznický inženýr
  • Naveed Kharadi | Technik zákaznického prostředí
  • Erin Schaffer | Content Developer 2