El Ops Manager es responsable de facilitar cargas de trabajo como la copia de seguridad de datos, la supervisión del rendimiento de la base de datos y más. Para hacer que tu Ops Manager de múltiples clústeres y la implementación de la base de datos de la aplicación sean resilientes frente a fallos de centros de datos o zonas enteras, implementa Ops Manager Application y la base de datos de la aplicación en varios clústeres de Kubernetes.
Requisitos previos
Antes de comenzar el siguiente procedimiento, tome las siguientes acciones:
Instale
kubectl.Complete el procedimiento de clústeres de GKE o el equivalente.
Completar el procedimiento de certificados TLS o el equivalente.
Completa el procedimiento de ExternalDNS o su equivalente.
Completa el procedimiento Implementar el operador de MongoDB.
Configura las variables de entorno requeridas de la siguiente manera:
# 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}# ${DNS_ZONE}
# Defaults for the RustFS setup module and the MongoDBOpsManager backup stores.# If you use your own S3 storage - override any of these.export S3_OPLOG_BUCKET_NAME="${S3_OPLOG_BUCKET_NAME:-s3-oplog-store}"export S3_SNAPSHOT_BUCKET_NAME="${S3_SNAPSHOT_BUCKET_NAME:-s3-snapshot-store}"export S3_ENDPOINT="${S3_ENDPOINT:-rustfs.rustfs.svc.cluster.local}"export S3_ACCESS_KEY="${S3_ACCESS_KEY:-rustfsadmin}"export S3_SECRET_KEY="${S3_SECRET_KEY:-rustfsadmin123}"
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}"
# Run-scoped names for project-global GCP load balancer resources (KUBE-268).# Multiple CI runs share the same GCP project; with fixed global names, one run's# pre-clean/teardown deletes a concurrent run's load balancer mid-flight.# Derive the run-specific suffix from ${DNS_ZONE} (set in the ExternalDNS setup# guide). For docs users there is no run suffix and the names stay unchanged.lb_suffix="${DNS_ZONE#"mongodb"}"export OM_FIREWALL_RULE_NAME="fw-ops-manager-hc${lb_suffix}"export OM_HEALTHCHECK_NAME="om-healthcheck${lb_suffix}"export OM_BACKEND_SERVICE_NAME="om-backend-service${lb_suffix}"export OM_URL_MAP_NAME="om-url-map${lb_suffix}"export OM_LB_PROXY_NAME="om-lb-proxy${lb_suffix}"export OM_CERTIFICATE_NAME="om-certificate${lb_suffix}"export OM_FORWARDING_RULE_NAME="om-forwarding-rule${lb_suffix}"
# Retry wrapper for gcloud commands to handle transient GCP API errors# (ConnectionError, RemoteDisconnected, etc.). Functions are inherited by# subshells, so this is available inside snippet functions run by sample_test_runner.gcloud_retry() { for attempt in 1 2 3; do if gcloud "$@"; then return 0; fi if (( attempt < 3 )); then echo "gcloud failed (attempt ${attempt}/3), retrying in $((attempt * 5))s..." >&2 sleep $((attempt * 5)) fi done return 1}Código fuente
Se puede encontrar todo el código fuente incluido en el repositorio de MongoDB Kubernetes operador.
Procedimiento
Generar certificados TLS.
kubectl --context "${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 authEOFAgrega un certificado TLS a 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_retry compute ssl-certificates create "${OM_CERTIFICATE_NAME}" --certificate=certs/tls.crt --private-key=certs/tls.keyCrea los componentes necesarios de Kubernetes para un balanceador de carga.
Este balanceador de carga distribuye el tráfico entre todas las réplicas de Ops Manager en todos los clústeres 3.
gcloud_retry compute firewall-rules create "${OM_FIREWALL_RULE_NAME}" \ --action=allow \ --direction=ingress \ --target-tags=mongodb \ --source-ranges=130.211.0.0/22,35.191.0.0/16 \ --rules=tcp:8443
gcloud_retry compute health-checks create https "${OM_HEALTHCHECK_NAME}" \ --use-serving-port \ --request-path=/monitor/health
gcloud_retry compute backend-services create "${OM_BACKEND_SERVICE_NAME}" \ --protocol HTTPS \ --health-checks "${OM_HEALTHCHECK_NAME}" \ --global
gcloud_retry compute url-maps create "${OM_URL_MAP_NAME}" \ --default-service "${OM_BACKEND_SERVICE_NAME}"
gcloud_retry compute target-https-proxies create "${OM_LB_PROXY_NAME}" \ --url-map "${OM_URL_MAP_NAME}" \ --ssl-certificates="${OM_CERTIFICATE_NAME}"
gcloud_retry compute forwarding-rules create "${OM_FORWARDING_RULE_NAME}" \ --global \ --target-https-proxy="${OM_LB_PROXY_NAME}" \ --ports=443NAME NETWORK DIRECTION PRIORITY ALLOW DENY DISABLEDfw-ops-manager-hc-4f4a5aab3498f278b0 default INGRESS 1000 tcp:8443 FalseNAME PROTOCOLom-healthcheck-4f4a5aab3498f278b0 HTTPSNAME BACKENDS PROTOCOLom-backend-service-4f4a5aab3498f278b0 HTTPSNAME DEFAULT_SERVICEom-url-map-4f4a5aab3498f278b0 backendServices/om-backend-service-4f4a5aab3498f278b0NAME SSL_CERTIFICATES URL_MAP REGION CERTIFICATE_MAPom-lb-proxy-4f4a5aab3498f278b0 om-certificate-4f4a5aab3498f278b0 om-url-map-4f4a5aab3498f278b0Agrega un registro "A" a tu zona DNS con tu dominio externo.
ip_address=$(gcloud_retry compute forwarding-rules describe "${OM_FORWARDING_RULE_NAME}" --global --format="get(IPAddress)")
gcloud_retry dns record-sets create "${OPS_MANAGER_EXTERNAL_DOMAIN}" --zone="${DNS_ZONE}" --type="A" --ttl="300" --rrdatas="${ip_address}"Cree credenciales para el usuario administrador de Ops Manager.
kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" --namespace "${OM_NAMESPACE}" create secret generic om-admin-user-credentials \ --from-literal=Username="admin" \ --from-literal=Password="Passw0rd@" \ --from-literal=FirstName="Jane" \ --from-literal=LastName="Doe"Implementar Ops Manager.
kubectl apply --context "${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}.${APPDB_CLUSTER_2_EXTERNAL_DOMAIN}" backup: enabled: falseEOFEspere a que el operador de Kubernetes entre en estado pendiente.
Espere a que se completen las implementaciones de la base de datos de la aplicación y de Ops Manager.
echo "Waiting for Application Database to reach Pending phase..."kubectl --context "${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 "${OM_NAMESPACE}" wait --for=jsonpath='{.status.opsManager.phase}'=Pending opsmanager/om --timeout=600sWaiting for Application Database to reach Pending phase...mongodbopsmanager.mongodb.com/om condition metWaiting for Ops Manager to reach Pending phase...mongodbopsmanager.mongodb.com/om condition metConfigura servicios de balanceador de carga.
svcneg0=$(kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get svcneg -o=jsonpath='{.items[0].metadata.name}')
kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" \ wait svcneg "${svcneg0}" --for=condition=Initialized --timeout=300s \ || { kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get svcneg "${svcneg0}" -o yaml; exit 1; }
gcloud_retry compute backend-services add-backend "${OM_BACKEND_SERVICE_NAME}" \ --global \ --network-endpoint-group="${svcneg0}" \ --network-endpoint-group-zone="${K8S_CLUSTER_0_ZONE}" \ --balancing-mode RATE --max-rate-per-endpoint 5svcneg1=$(kubectl --context "${K8S_CLUSTER_1_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get svcneg -o=jsonpath='{.items[0].metadata.name}')
kubectl --context "${K8S_CLUSTER_1_CONTEXT_NAME}" -n "${OM_NAMESPACE}" \ wait svcneg "${svcneg1}" --for=condition=Initialized --timeout=300s \ || { kubectl --context "${K8S_CLUSTER_1_CONTEXT_NAME}" -n "${OM_NAMESPACE}" get svcneg "${svcneg1}" -o yaml; exit 1; }
gcloud_retry compute backend-services add-backend "${OM_BACKEND_SERVICE_NAME}" \ --global \ --network-endpoint-group="${svcneg1}" \ --network-endpoint-group-zone="${K8S_CLUSTER_1_ZONE}" \ --balancing-mode RATE --max-rate-per-endpoint 5Espera a que Ops Manager entre en un estado de ejecución.
echo "Waiting for Application Database to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.applicationDatabase.phase}'=Running opsmanager/om --timeout=1200secho; echo "Waiting for Ops Manager to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.opsManager.phase}'=Running opsmanager/om --timeout=1200secho; echo "MongoDBOpsManager resource"kubectl --context "${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 "${OM_NAMESPACE}" get podsWaiting for Application Database to reach Running phase...mongodbopsmanager.mongodb.com/om condition met
Waiting for Ops Manager to reach Running phase...mongodbopsmanager.mongodb.com/om condition met
MongoDBOpsManager resourceNAME REPLICAS VERSION STATE (OPSMANAGER) STATE (APPDB) STATE (BACKUP) AGE WARNINGSom 8.0.5 Running Running Disabled 18m
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-a_k8s-mdb-0-4f4a5aab3498f278b0NAME READY STATUS RESTARTS AGEom-0-0 1/1 Running 0 16mom-db-0-0 2/2 Running 0 4m57som-db-0-1 2/2 Running 0 5m48s
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-b_k8s-mdb-1-4f4a5aab3498f278b0NAME READY STATUS RESTARTS AGEom-1-0 1/1 Running 0 16mom-1-1 1/1 Running 0 9m42som-db-1-0 2/2 Running 0 3m14som-db-1-1 2/2 Running 0 4m5sOpcional. Implemente almacenamiento compatible con S3para realizar pruebas.
Este paso proporciona un script que implementa una instancia simple de RustFS para fines de prueba. Puede omitir este paso si tiene AWS S3 u otros buckets compatibles con S3disponibles.
Nota
RustFS es solo para pruebas y no es adecuado para producción. Para producción, utilice su propio S3 almacenamiento.
Configure los secretos de Kubernetes para las copias de seguridad de Ops Manager.
kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" create secret generic s3-access-secret \ --from-literal=accessKey="${S3_ACCESS_KEY}" \ --from-literal=secretKey="${S3_SECRET_KEY}"
# RustFS serves a cert-manager certificate; OM must trust the CA that signed it.kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" create secret generic s3-ca-cert \ --from-literal=ca.crt="$(kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${RUSTFS_NAMESPACE}" get secret rustfs-tls -o jsonpath="{.data['ca\.crt']}" | base64 --decode)"Habilite las copias de seguridad S3 en 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: "${S3_OPLOG_BUCKET_NAME}" pathStyleAccessEnabled: true customCertificateSecretRefs: - name: s3-ca-cert key: ca.crtEOFEspera a que Ops Manager entre en un estado de ejecución.
echo; echo "Waiting for Backup to reach Running phase..."kubectl --context "${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 "${OM_NAMESPACE}" wait --for=jsonpath='{.status.applicationDatabase.phase}'=Running opsmanager/om --timeout=1200secho; echo "Waiting for Ops Manager to reach Running phase..."kubectl --context "${K8S_CLUSTER_0_CONTEXT_NAME}" -n "${OM_NAMESPACE}" wait --for=jsonpath='{.status.opsManager.phase}'=Running opsmanager/om --timeout=1200secho; echo "MongoDBOpsManager resource"kubectl --context "${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 podsWaiting 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 21m
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-a_k8s-mdb-0-4f4a5aab3498f278b0NAME READY STATUS RESTARTS AGEom-0-0 1/1 Running 0 18mom-db-0-0 2/2 Running 0 7m34som-db-0-1 2/2 Running 0 8m25s
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-b_k8s-mdb-1-4f4a5aab3498f278b0NAME READY STATUS RESTARTS AGEom-1-0 1/1 Running 0 18mom-1-1 1/1 Running 0 12mom-db-1-0 2/2 Running 0 5m51som-db-1-1 2/2 Running 0 6m42s
Pods running in cluster gke_scratch-kubernetes-team_europe-central2-c_k8s-mdb-2-4f4a5aab3498f278b0NAME READY STATUS RESTARTS AGEom-2-backup-daemon-0 1/1 Running 0 2m27som-db-2-0 2/2 Running 0 4m57sCrea una organización de MongoDB y obtén credenciales.
Para configurar las credenciales, debe crear una organización en el Ops Manager, generar claves API programáticas en la Interfaz de Usuario del Ops Manager, y crear un secreto con la IP de su balanceador de carga. Consulte Crear Credenciales para el Operador de Kubernetes para aprender más.