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Runs an Exhibitor-managed ZooKeeper instance using S3 for backups and automatic node discovery.

Available on the Docker Index as mbabineau/zookeeper-exhibitor:

docker pull mbabineau/zookeeper-exhibitor

Versions

  • Exhibitor 1.5.5
  • ZooKeeper 3.4.6

Usage

The container expects the following environment variables to be passed in:

  • S3_BUCKET - bucket used by Exhibitor for backups and coordination
  • S3_PREFIX - key prefix within S3_BUCKET to use for this cluster
  • AWS_ACCESS_KEY_ID - AWS access key ID with read/write permissions on S3_BUCKET
  • AWS_SECRET_ACCESS_KEY - secret key for AWS_ACCESS_KEY_ID
  • HOSTNAME - addressable hostname for this node (Exhibitor will forward users of the UI to this address)
  • AWS_REGION - (optional) the AWS region of the S3 bucket (defaults to us-west-2)
  • ZK_PASSWORD - (optional) the HTTP Basic Auth password for the "zk" user

Starting the container:

docker run -p 8181:8181 -p 2181:2181 -p 2888:2888 -p 3888:3888 \
    -e S3_BUCKET=<bucket> \
    -e S3_PREFIX=<key_prefix> \
    -e AWS_ACCESS_KEY_ID=<access_key> \
    -e AWS_SECRET_ACCESS_KEY=<secret_key> \
    -e HOSTNAME=<host> \
    mbabineau/zookeeper-exhibitor:latest

Once the container is up, confirm Exhibitor is running:

$ curl -s localhost:8181/exhibitor/v1/cluster/status | python -m json.tool
[
    {
        "code": 3, 
        "description": "serving", 
        "hostname": "<host>", 
        "isLeader": true
    }
]

See Exhibitor's wiki for more details on its REST API.

You can also check Exhibitor's web UI at http://<host>:8181/exhibitor/v1/ui/index.html

Then confirm ZK is available:

$ echo ruok | nc <host> 2181
imok
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