Zookeeper Docker image

Docker image with Apache Zookeeper based on official Java 8 image. Uses Docker 1.10 DNS resolving capability.

Environment variables

ZOOKEEPER_NODE_COUNT

Default value: 1

Number of Zookeeper node containers. All containers must be in the same Docker network.

ZOOKEEPER_NODE_PREFIX

Default value: zookeeper_node

Prefix for container name. Example: if ZOOKEEPER_NODE_PREFIX=zk_node and ZOOKEEPER_NODE_COUNT=3 then containers should have names: zk_node_1, zk_node_2 and zk_node_3.

ZOOKEEPER_DATA_DIR

Default value: /var/lib/zookeeper

ZOOKEEPER_LOG_DIR

Default value: /var/log/zookeeper

ZOOKEEPER_TICK_TIME

Default value: 2000

ZOOKEEPER_INIT_LIMIT

Default value: 5

ZOOKEEPER_SYNC_LIMIT

Default value: 2

ZOOKEEPER_CLIENT_PORT

Default value: 2181

ZOOKEEPER_QUORUM_PORT

Default value: 2888

ZOOKEEPER_LEADER_ELECTION_PORT

Default value: 3888

Usage

Starting cluster with run-cluster.sh:

> docker build -t directual/zookeeper .
...
> docker network create zknet
> ./run-cluster

> ./run-cluster zknet 3
...

Starting nodes manually:

> docker network create zknetwork
> docker run -d \
    --env ZOOKEEPER_NODE_COUNT=3 \
    --env ZOOKEEPER_NODE_PREFIX=zk_node \
    --net zknetwork \
    --name zk_node_1 \
    directual/zookeeper
> docker run -d \
    --env ZOOKEEPER_NODE_COUNT=3 \
    --env ZOOKEEPER_NODE_PREFIX=zk_node \
    --net zknetwork \
    --name zk_node_2 \
    directual/zookeeper
> docker run -d \
    --env ZOOKEEPER_NODE_COUNT=3 \
    --env ZOOKEEPER_NODE_PREFIX=zk_node \
    --net zknetwork \
    --name zk_node_3 \
    directual/zookeeper