zookeeper

zookeeper使用

一、docker-compose方式安装3个节点集群

version: '3.1'

services:
  zoo1:
    container_name: zoo1
    image: zookeeper
    hostname: zoo1
    ports:
      - 2181:2181
    networks:
      - zookeeper-network
    volumes:
        - /opt/zookeeper/zoo1/data:/data
        - /opt/zookeeper/zoo1/conf/zoo.cfg:/conf/zoo.cfg
        - /opt/zookeeper/zoo1/logs:/datalog
    restart: always
    environment:
      ZOO_MY_ID: 1
      ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181

  zoo2:
    container_name: zoo2
    image: zookeeper
    hostname: zoo2
    ports:
      - 2182:2181
    networks:
      - zookeeper-network
    volumes:
      - /opt/zookeeper/zoo2/data:/data
      - /opt/zookeeper/zoo2/conf/zoo.cfg:/conf/zoo.cfg
      - /opt/zookeeper/zoo2/logs:/datalog
    restart: always
    environment:
      ZOO_MY_ID: 2
      ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181

  zoo3:
    container_name: zoo3
    image: zookeeper
    hostname: zoo3
    ports:
      - 2183:2181
    networks:
      - zookeeper-network
    volumes:
      - /opt/zookeeper/zoo3/data:/data
      - /opt/zookeeper/zoo3/conf/zoo.cfg:/conf/zoo.cfg
      - /opt/zookeeper/zoo3/logs:/datalog
    restart: always
    environment:
      ZOO_MY_ID: 3
      ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181

networks:
  zookeeper-network:
    driver: bridge

注意：

compose文件中目录和文件需要提前建好
mkdir -p /opt/zookeeper/zoo1/data
mkdir -p /opt/zookeeper/zoo1/conf
mkdir -p /opt/zookeeper/zoo1/logs
touch /opt/zookeeper/zoo1/conf/zoo.cfg

mkdir -p /opt/zookeeper/zoo2/data
mkdir -p /opt/zookeeper/zoo2/conf
mkdir -p /opt/zookeeper/zoo2/logs
touch /opt/zookeeper/zoo2/conf/zoo.cfg

mkdir -p /opt/zookeeper/zoo3/data
mkdir -p /opt/zookeeper/zoo3/conf
mkdir -p /opt/zookeeper/zoo3/logs
touch /opt/zookeeper/zoo3/conf/zoo.cfg

分别修改zookeeper的/conf/zoo.cfg目录下的配置文件 

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/data
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the 
# administrator guide before turning on autopurge.
#
# https://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1

## Metrics Providers
#
# https://prometheus.io Metrics Exporter
#metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
#metricsProvider.httpHost=0.0.0.0
#metricsProvider.httpPort=7000
#metricsProvider.exportJvmInfo=true

启动

docker-compose up -d

注意：修改docker的模式

vim  /etc/docker/daemon.json

#添加以下，不然启动报找不到端口

"exec-opts": ["native.cgroupdriver=systemd"