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Ops Manager de vários clusters sem uma rede de serviços

O Ops Manager é responsável por facilitar volumes de trabalho, como backup de dados, monitorar o desempenho do banco de dados e muito mais. Para tornar o Ops Manager de vários clusters e o sistema de banco de dados de aplicativos resilientes a falhas de data center ou de zona inteiras, implemente o aplicativo Ops Manager e o sistema de banco de dados de aplicativos em vários clusters do Kubernetes.

Pré-requisitos

Antes de iniciar o procedimento a seguir, execute as seguintes ações:

# This script builds on top of the environment configured in the setup guides.# It depends (uses) the following env variables defined there to work correctly.# If you don't use the setup guide to bootstrap the environment, then define them here.#  ${K8S_CLUSTER_0_CONTEXT_NAME}#  ${K8S_CLUSTER_1_CONTEXT_NAME}#  ${K8S_CLUSTER_2_CONTEXT_NAME}#  ${OM_NAMESPACE}#  ${CUSTOM_DOMAIN}#  ${DNS_ZONE}
export S3_OPLOG_BUCKET_NAME=s3-oplog-storeexport S3_SNAPSHOT_BUCKET_NAME=s3-snapshot-store
# If you use your own S3 storage - set the values accordingly.# By default we install Minio to handle S3 storage and here are set the default credentials.export S3_ENDPOINT="minio.tenant-tiny.svc.cluster.local"export S3_ACCESS_KEY="console"export S3_SECRET_KEY="console123"
export OPS_MANAGER_VERSION="8.0.5"export APPDB_VERSION="8.0.5-ent"
export OPS_MANAGER_EXTERNAL_DOMAIN="opsmanager.${CUSTOM_DOMAIN}"export APPDB_CLUSTER_0_EXTERNAL_DOMAIN="${K8S_CLUSTER_0}.${CUSTOM_DOMAIN}"export APPDB_CLUSTER_1_EXTERNAL_DOMAIN="${K8S_CLUSTER_1}.${CUSTOM_DOMAIN}"export APPDB_CLUSTER_2_EXTERNAL_DOMAIN="${K8S_CLUSTER_2}.${CUSTOM_DOMAIN}"

código fonte

Você pode encontrar todo o código-fonte incluído no repositório do MongoDB Kubernetes Operator.

Procedimento

1

Gerar certificados TLS.

kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" apply -f - <<EOFapiVersion: cert-manager.io/v1kind: Certificatemetadata:  name: om-certspec:  dnsNames:  - ${OPS_MANAGER_EXTERNAL_DOMAIN}  duration: 240h0m0s  issuerRef:    name: my-ca-issuer    kind: ClusterIssuer  renewBefore: 120h0m0s  secretName: cert-prefix-om-cert  usages:  - server auth  - client auth---apiVersion: cert-manager.io/v1kind: Certificatemetadata:  name: om-db-certspec:  dnsNames:  - "*.${APPDB_CLUSTER_0_EXTERNAL_DOMAIN}"  - "*.${APPDB_CLUSTER_1_EXTERNAL_DOMAIN}"  - "*.${APPDB_CLUSTER_2_EXTERNAL_DOMAIN}"  duration: 240h0m0s  issuerRef:    name: my-ca-issuer    kind: ClusterIssuer  renewBefore: 120h0m0s  secretName: cert-prefix-om-db-cert  usages:  - server auth  - client authEOF
2

Adicione o certificado TLS ao GCP.

mkdir -p certs
kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get secret cert-prefix-om-cert -o jsonpath="{.data['tls\.crt']}" | base64 --decode > certs/tls.crtkubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get secret cert-prefix-om-cert -o jsonpath="{.data['tls\.key']}" | base64 --decode > certs/tls.key
gcloud compute ssl-certificates create om-certificate --certificate=certs/tls.crt --private-key=certs/tls.key
3

Crie os componentes necessários do Kubernetes para um balanceador de carga .

Esse balanceador de carga distribui o tráfego entre todas as réplicas do Ops Manager em todos os clusters 3.

gcloud compute firewall-rules create fw-ops-manager-hc \   --action=allow \   --direction=ingress \   --target-tags=mongodb \   --source-ranges=130.211.0.0/22,35.191.0.0/16 \   --rules=tcp:8443
gcloud compute health-checks create https om-healthcheck \    --use-serving-port \    --request-path=/monitor/health
gcloud compute backend-services create om-backend-service \    --protocol HTTPS \    --health-checks om-healthcheck \    --global
gcloud compute url-maps create om-url-map \    --default-service om-backend-service
gcloud compute target-https-proxies create om-lb-proxy \    --url-map om-url-map \    --ssl-certificates=om-certificate
gcloud compute forwarding-rules create om-forwarding-rule \    --global \    --target-https-proxy=om-lb-proxy \    --ports=443
NAME               NETWORK  DIRECTION  PRIORITY  ALLOW     DENY  DISABLEDfw-ops-manager-hc  default  INGRESS    1000      tcp:8443        FalseNAME            PROTOCOLom-healthcheck  HTTPSNAME                BACKENDS  PROTOCOLom-backend-service            HTTPSNAME        DEFAULT_SERVICEom-url-map  backendServices/om-backend-serviceNAME         SSL_CERTIFICATES  URL_MAP     REGION  CERTIFICATE_MAPom-lb-proxy  om-certificate    om-url-map
4

Adicione um registro "A" à sua zona de DNS com seu domínio externo.

ip_address=$(gcloud compute forwarding-rules describe om-forwarding-rule --global --format="get(IPAddress)")
gcloud dns record-sets create "${OPS_MANAGER_EXTERNAL_DOMAIN}" --zone="${DNS_ZONE}" --type="A" --ttl="300" --rrdatas="${ip_address}"
5

Crie credenciais para o usuário administrador do Ops Manager.

kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" --namespace "${OM_NAMESPACE}" create secret generic om-admin-user-credentials \  --from-literal=Username="admin" \  --from-literal=Password="Passw0rd@" \  --from-literal=FirstName="Jane" \  --from-literal=LastName="Doe"
6

Implemente o Ops Manager.

kubectl apply --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" -f - <<EOFapiVersion: mongodb.com/v1kind: MongoDBOpsManagermetadata:  name: omspec:  topology: MultiCluster  version: "${OPS_MANAGER_VERSION}"  adminCredentials: om-admin-user-credentials  externalConnectivity:    type: ClusterIP    annotations:      cloud.google.com/neg: '{"exposed_ports": {"8443":{}}}'  opsManagerURL: "https://${OPS_MANAGER_EXTERNAL_DOMAIN}"  security:    certsSecretPrefix: cert-prefix    tls:      ca: ca-issuer  clusterSpecList:    - clusterName: "${K8S_CLUSTER_0_CONTEXT_NAME}"      members: 1    - clusterName: "${K8S_CLUSTER_1_CONTEXT_NAME}"      members: 2  applicationDatabase:    version: "${APPDB_VERSION}"    topology: MultiCluster    security:      certsSecretPrefix: cert-prefix      tls:        ca: ca-issuer    clusterSpecList:      - clusterName: "${K8S_CLUSTER_0_CONTEXT_NAME}"        members: 2        externalAccess:          externalDomain: "${APPDB_CLUSTER_0_EXTERNAL_DOMAIN}"          externalService:            annotations:               external-dns.alpha.kubernetes.io/hostname: "{podName}.${APPDB_CLUSTER_0_EXTERNAL_DOMAIN}"      - clusterName: "${K8S_CLUSTER_1_CONTEXT_NAME}"        members: 2        externalAccess:          externalDomain: "${APPDB_CLUSTER_1_EXTERNAL_DOMAIN}"          externalService:            annotations:               external-dns.alpha.kubernetes.io/hostname: "{podName}.${APPDB_CLUSTER_1_EXTERNAL_DOMAIN}"      - clusterName: "${K8S_CLUSTER_2_CONTEXT_NAME}"        members: 1        externalAccess:          externalDomain: "${APPDB_CLUSTER_2_EXTERNAL_DOMAIN}"          externalService:            annotations:               external-dns.alpha.kubernetes.io/hostname: "{podName}.${APPDB_CLUSTER_2_EXTERNAL_DOMAIN}"  backup:    enabled: falseEOF
7

Aguarde até que o operador Kubernetes entre em um estado pendente.

Aguarde a conclusão das implantações do banco de dados de aplicativos e do Ops Manager.

echo "Waiting for Application Database to reach Pending phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.applicationDatabase.phase}'=Pending opsmanager/om --timeout=30s
echo "Waiting for Ops Manager to reach Pending phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.opsManager.phase}'=Pending opsmanager/om --timeout=600s
Waiting for Application Database to reach Pending phase...mongodbopsmanager.mongodb.com/om condition metWaiting for Ops Manager to reach Pending phase...mongodbopsmanager.mongodb.com/om condition met
8

Configure serviços de balanceador de carga.

svcneg0=$(kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get svcneg -o=jsonpath='{.items[0].metadata.name}')
gcloud compute backend-services add-backend om-backend-service \    --global \    --network-endpoint-group="${svcneg0}" \    --network-endpoint-group-zone="${K8S_CLUSTER_0_ZONE}" \    --balancing-mode RATE --max-rate-per-endpoint 5
svcneg1=$(kubectl --context "${K8S_CLUSTER_1_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get svcneg -o=jsonpath='{.items[0].metadata.name}')
gcloud compute backend-services add-backend om-backend-service \    --global \    --network-endpoint-group="${svcneg1}" \    --network-endpoint-group-zone="${K8S_CLUSTER_1_ZONE}" \    --balancing-mode RATE --max-rate-per-endpoint 5
9

Aguarde o Ops Manager entrar em um estado de execução.

echo "Waiting for Application Database to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.applicationDatabase.phase}'=Running opsmanager/om --timeout=900secho; echo "Waiting for Ops Manager to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.opsManager.phase}'=Running opsmanager/om --timeout=900secho; echo "MongoDBOpsManager resource"kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get opsmanager/omecho; echo "Pods running in cluster ${K8S_CLUSTER_0_CONTEXT_NAME}"kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get podsecho; echo "Pods running in cluster ${K8S_CLUSTER_1_CONTEXT_NAME}"kubectl --context "${K8S_CLUSTER_1_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get pods
Waiting for Application Database to reach Running phase...mongodbopsmanager.mongodb.com/om condition met
Waiting for Ops Manager to reach Running phase...mongodbopsmanager.mongodb.com/om condition met
MongoDBOpsManager resourceNAME   REPLICAS   VERSION   STATE (OPSMANAGER)   STATE (APPDB)   STATE (BACKUP)   AGE   WARNINGSom                8.0.5     Running              Running         Disabled         14m   
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-a_k8s-mdb-0-68c29e4f7014ee0007f0695a-5538NAME        READY   STATUS    RESTARTS   AGEom-0-0      1/1     Running   0          11mom-db-0-0   3/3     Running   0          4m4som-db-0-1   3/3     Running   0          5m11s
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-b_k8s-mdb-1-68c29e4f7014ee0007f0695a-5538NAME        READY   STATUS    RESTARTS   AGEom-1-0      1/1     Running   0          11mom-1-1      1/1     Running   0          8m30som-db-1-0   3/3     Running   0          117som-db-1-1   3/3     Running   0          3m5s
10

Instale o Minio.

kubectl kustomize "github.com/minio/operator/resources/?timeout=120&ref=v5.0.12" | \  kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" apply -f -
kubectl kustomize "github.com/minio/operator/examples/kustomization/tenant-tiny?timeout=120&ref=v5.0.12" | \  kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" apply -f -
# add two buckets to the tenant configkubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "tenant-tiny" patch tenant/myminio \  --type='json' \  -p="[{\"op\": \"add\", \"path\": \"/spec/buckets\", \"value\": [{\"name\": \"${S3_OPLOG_BUCKET_NAME}\"}, {\"name\": \"${S3_SNAPSHOT_BUCKET_NAME}\"}]}]"
11

Configure o Kubernetes Secrets para backups do Ops Manager.

kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" create secret generic s3-access-secret \  --from-literal=accessKey="${S3_ACCESS_KEY}" \  --from-literal=secretKey="${S3_SECRET_KEY}"
# minio TLS secrets are signed with the default k8s root CAkubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" create secret generic s3-ca-cert \  --from-literal=ca.crt="$(kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n kube-system get configmap kube-root-ca.crt -o jsonpath="{.data.ca\.crt}")"
12

Ative os backups S3 (Minio) no Ops Manager.

kubectl apply --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" -f - <<EOFapiVersion: mongodb.com/v1kind: MongoDBOpsManagermetadata:  name: omspec:  topology: MultiCluster  version: "${OPS_MANAGER_VERSION}"  adminCredentials: om-admin-user-credentials  externalConnectivity:    type: ClusterIP    annotations:      cloud.google.com/neg: '{"exposed_ports": {"8443":{}}}'  opsManagerURL: "https://${OPS_MANAGER_EXTERNAL_DOMAIN}"  security:    certsSecretPrefix: cert-prefix    tls:      ca: ca-issuer  clusterSpecList:    - clusterName: "${K8S_CLUSTER_0_CONTEXT_NAME}"      members: 1      backup:        members: 0    - clusterName: "${K8S_CLUSTER_1_CONTEXT_NAME}"      members: 2      backup:        members: 0    - clusterName: "${K8S_CLUSTER_2_CONTEXT_NAME}"      members: 0      backup:        members: 1  applicationDatabase:    version: "${APPDB_VERSION}"    topology: MultiCluster    security:      certsSecretPrefix: cert-prefix      tls:        ca: ca-issuer    clusterSpecList:      - clusterName: "${K8S_CLUSTER_0_CONTEXT_NAME}"        members: 2        externalAccess:          externalDomain: "${APPDB_CLUSTER_0_EXTERNAL_DOMAIN}"          externalService:            annotations:               external-dns.alpha.kubernetes.io/hostname: "{podName}.${APPDB_CLUSTER_0_EXTERNAL_DOMAIN}"      - clusterName: "${K8S_CLUSTER_1_CONTEXT_NAME}"        members: 2        externalAccess:          externalDomain: "${APPDB_CLUSTER_1_EXTERNAL_DOMAIN}"          externalService:            annotations:               external-dns.alpha.kubernetes.io/hostname: "{podName}.${APPDB_CLUSTER_1_EXTERNAL_DOMAIN}"      - clusterName: "${K8S_CLUSTER_2_CONTEXT_NAME}"        members: 1        externalAccess:          externalDomain: "${APPDB_CLUSTER_2_EXTERNAL_DOMAIN}"          externalService:            annotations:               external-dns.alpha.kubernetes.io/hostname: "{podName}.${APPDB_CLUSTER_2_EXTERNAL_DOMAIN}"  backup:    enabled: true    s3Stores:      - name: my-s3-block-store        s3SecretRef:          name: "s3-access-secret"        pathStyleAccessEnabled: true        s3BucketEndpoint: "${S3_ENDPOINT}"        s3BucketName: "${S3_SNAPSHOT_BUCKET_NAME}"        customCertificateSecretRefs:          - name: s3-ca-cert            key: ca.crt    s3OpLogStores:      - name: my-s3-oplog-store        s3SecretRef:          name: "s3-access-secret"        s3BucketEndpoint: "${S3_ENDPOINT}"        s3BucketName: "${S3_OPLOG_BUCKET_NAME}"        pathStyleAccessEnabled: true        customCertificateSecretRefs:          - name: s3-ca-cert            key: ca.crtEOF
13

Aguarde o Ops Manager entrar em um estado de execução.

echo; echo "Waiting for Backup to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.backup.phase}'=Running opsmanager/om --timeout=1200secho "Waiting for Application Database to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.applicationDatabase.phase}'=Running opsmanager/om --timeout=600secho; echo "Waiting for Ops Manager to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.opsManager.phase}'=Running opsmanager/om --timeout=600secho; echo "MongoDBOpsManager resource"kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get opsmanager/omecho; echo "Pods running in cluster ${K8S_CLUSTER_0_CONTEXT_NAME}"kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get podsecho; echo "Pods running in cluster ${K8S_CLUSTER_1_CONTEXT_NAME}"kubectl --context "${K8S_CLUSTER_1_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get podsecho; echo "Pods running in cluster ${K8S_CLUSTER_2_CONTEXT_NAME}"kubectl --context "${K8S_CLUSTER_2_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get pods
Waiting for Backup to reach Running phase...mongodbopsmanager.mongodb.com/om condition metWaiting for Application Database to reach Running phase...mongodbopsmanager.mongodb.com/om condition met
Waiting for Ops Manager to reach Running phase...mongodbopsmanager.mongodb.com/om condition met
MongoDBOpsManager resourceNAME   REPLICAS   VERSION   STATE (OPSMANAGER)   STATE (APPDB)   STATE (BACKUP)   AGE   WARNINGSom                8.0.5     Running              Running         Running          18m   
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-a_k8s-mdb-0-68c29e4f7014ee0007f0695a-5538NAME        READY   STATUS    RESTARTS   AGEom-0-0      1/1     Running   0          15mom-db-0-0   3/3     Running   0          8m7som-db-0-1   3/3     Running   0          9m14s
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-b_k8s-mdb-1-68c29e4f7014ee0007f0695a-5538NAME        READY   STATUS    RESTARTS   AGEom-1-0      1/1     Running   0          15mom-1-1      1/1     Running   0          12mom-db-1-0   3/3     Running   0          6m1som-db-1-1   3/3     Running   0          7m9s
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-c_k8s-mdb-2-68c29e4f7014ee0007f0695a-5538NAME                   READY   STATUS    RESTARTS   AGEom-2-backup-daemon-0   1/1     Running   0          3m16som-db-2-0              3/3     Running   0          5m
14

Crie a organização MongoDB e obtenha credenciais.

Para configurar as credenciais, você deve criar uma organização do Ops Manager, gerar chaves de API programáticas na interface do usuário do Ops Manager e criar um segredo com o IP do Load Balancer. Consulte Criar Credenciais para o Operador Kubernetes para saber mais.

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Certificados TLS
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Conjuntos de réplicas em vários clusters
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