Multi-Cluster Sharded Cluster

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  shardPodSpec: # applicable to all shards in all clusters
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    persistence:
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      single:
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        storage: "5G"
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    podTemplate:
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      spec:
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        containers:
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          - name: mongodb-enterprise-database
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            resources:
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              requests:
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                cpu: 0.5
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                memory: 1.0G
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              limits:
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                cpu: 1.0
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                memory: 2.0G
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  shard:
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    clusterSpecList:
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      - clusterName: kind-e2e-cluster-1
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        members: 2
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        # The below statefulset override is applicable only to pods in kind-e2e-cluster-1
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        # Specs will be merged, the "request" field defined above will still be
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        # applied to containers in this cluster.
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        # However, limits will be replaced with below values, because
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        # clusterSpecList.statefulSet.spec.template has a
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        # higher priority than shardPodSpec.podTemplate
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        statefulSet:
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          spec:
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            template:
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              spec:
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                containers:
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                  - name: mongodb-enterprise-database
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                    resources:
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                      limits:
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                        cpu: 1.0
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                        memory: 2.5G
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        # In clusterSpecList.podSpec, only persistence field must be used, the
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        # podTemplate field is ignored.
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        # In kind-e2e-cluster-1, we replace the persistence settings defined in
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        # shardPodSpec
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        podSpec:
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          persistence:
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            multiple:
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              journal:
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                storage: "6G"
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              data:
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                storage: "7G"
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              logs:
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                storage: "6G"
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      - clusterName: kind-e2e-cluster-2
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        members: 1

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        # In clusterSpecList.podSpec, only persistence field must be used, the
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        # podTemplate field is ignored.
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        # In kind-e2e-cluster-1, we define custom persistence settings
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        podSpec:
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          persistence:
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            multiple:
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              journal:
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                storage: "5G"
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              data:
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                storage: "5G"
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              logs:
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                storage: "5G"
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      - clusterName: kind-e2e-cluster-2
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        members: 1
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  shardOverrides:
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    - shardNames: [ "pod-template-shards-1-2" ]
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      # This override will apply to shard of index 2
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      # Statefulset settings defined at this level (shardOverrides.statefulSet)
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      # apply to members of shard 2 in ALL clusters.
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      # This field has higher priority than shard.clusterSpecList.statefulSet, but
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      # lower than shardOverrides.clusterSpecList.statefulSet
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      # It has a merge policy, which means that the limits defined above for the
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      # mongodb-enterprise-database container field still apply to all members in
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      # that shard, except if overridden.
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      statefulSet:
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        spec:
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          template:
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            spec:
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              containers:
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                - name: sidecar-shard-2
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                  image: busybox
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                  command: [ "sleep" ]
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                  args: [ "infinity" ]
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      clusterSpecList:
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        - clusterName: kind-e2e-cluster-1
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          members: 2
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        - clusterName: kind-e2e-cluster-2
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          members: 1
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          # The below statefulset override is applicable only to members of shard 2, in cluster 1
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          # Specs will be merged, the "limits" field defined above will still be applied
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          # to containers in this cluster together with the requests field below.
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          statefulSet:
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            spec:
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              template:
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                spec:
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                  containers:
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                    - name: mongodb-enterprise-database
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                      resources:
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                        requests: # We add a requests field in shard 2, cluster 1
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                          cpu: 0.5
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                          memory: 1.0G
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          podSpec:
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            # In shardOverrides.clusterSpecList.podSpec, only persistence field must be
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            # used, the podTemplate field is ignored.
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            persistence: # we assign additional disk resources in shard 2, cluster 1
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              multiple:
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                journal:
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                  storage: "6G"
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                data:
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                  storage: "6G"
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                logs:
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                  storage: "6G"

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# This file is an example of how to migrate from the old deprecated
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# ShardSpecificPodSpec field to the new shardOverrides fields
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# for single cluster deployments.
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# The settings specified in shardOverrides are the exact equivalent to the
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# ones in shardSpecificPodSpec, showing how to replicate them
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apiVersion: mongodb.com/v1
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kind: MongoDB
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metadata:
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  name: shardspecificpodspec-migration
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  namespace: mongodb-test
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spec:
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  # There are 4 shards in this cluster, but the shardSpecificPodSpec field
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  # doesn't need to have on entry per shard, it can have less
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  shardCount: 4
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  mongodsPerShardCount: 2
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  mongosCount: 1
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  configServerCount: 3
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  topology: SingleCluster
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  type: ShardedCluster
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  version: 8.0.3
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  opsManager:
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    configMapRef:
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      name: my-project
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  credentials: my-credentials
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  persistent: true
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  shardPodSpec:
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    # default persistence configuration for all shards in all clusters
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    persistence:
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      single:
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        storage: "5G"
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  shardSpecificPodSpec: # deprecated way of overriding shards (array)
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    - persistence: # shard of index 0
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        single:
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          storage: "6G"
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      # Specify resources settings to enterprise database container in shard 0
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      podTemplate:
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        spec:
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          containers:
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            - name: mongodb-enterprise-database
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              resources:
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                requests:
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                  cpu: 0.5
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                  memory: 1G
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                limits:
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                  cpu: 1.0
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                  memory: 2.0G
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    - persistence: # shard of index 1
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        single:
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          storage: "7G"
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    - persistence: # shard of index 2
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        single:
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          storage: "7G"
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  # The below shardOverrides replicate the same shards configuration as the one
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  # specified above in shardSpecificPodSpec
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  shardOverrides:
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    - shardNames: [ "shardspecificpodspec-migration-0" ] # overriding shard #0
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      podSpec:
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        persistence:
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          single:
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            storage: "6G"
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      statefulSet:
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        spec:
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          template:
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            spec:
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              containers:
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                - name: mongodb-enterprise-database
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                  resources:
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                    requests:
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                      cpu: 0.5
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                      memory: 1G
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                    limits:
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                      cpu: 1.0
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                      memory: 2.0G
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    # The ShardSpecificPodSpec field above has the same configuration for shards
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    # 1 and 2. It is possible to specify both shard names in the override and not
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    # duplicate that configuration
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    - shardNames: [ "shardspecificpodspec-migration-1", "shardspecificpodspec-migration-2" ]
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      podSpec:
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        persistence:
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          single:
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            storage: "7G"