Install an HA MSR deployment

High availability (HA) MSR deployments require a Kubernetes environment with:

  • At least two different nodes to run an MSR deployment

  • An additional node on which to replicate the RethinkDB cluster, to ensure fault tolerance

To install an HA MSR deployment:

  1. Create an ha.yaml file with the following content:

    The ha.yaml file sample
    global:
    podAntiAffinityPreset: hard
    rethinkdb:
    cluster:
       replicaCount: 3
    proxy:
       replicaCount: 2
    enzi:
    api:
       replicaCount: 2
    worker:
       replicaCount: 2
    nginx:
    replicaCount: 2
    garant:
    replicaCount: 2
    api:
    replicaCount: 2
    jobrunner:
    deployments:
       default:
          replicaCount: 2
    notarySinger:
    replicaCount: 2
    notaryServer:
    replicaCount: 2
    registry:
    replicaCount: 2
    

    Note

    You can edit the replica counts in the ha.yaml file. However, you must make sure that rethinkdb.cluster.replicaCount is always an odd number. Refer to the RethinkDB scaling chart for details.

  2. Using Helm, apply the YAML file to a new installation:

    helm install msrofficial/msr –-version 1.0.0 -f ha.yaml