安装docker版的zookeeper

1、拉取镜像

sudo docker pull daocloud.io/daocloud/zookeeper:3.4.10

2、查看

sudo docker images

REPOSITORY                       TAG                 IMAGE ID            CREATED             SIZE
docker.io/hello-world            latest              e38bc07ac18e        9 days ago          1.85 kB
daocloud.io/daocloud/zookeeper   3.4.10              f2249a75c5d0        7 months ago        143 MB
daocloud.io/library/mysql        5.7.4               aa5364eb3d85        3 years ago         252 MB

3 运行容器,设置了挂载卷，设置了3个暴露端口，

sudo docker run -it --volumes-from mysql-data --name zookeeper -p 2181:2181 -p 2888:2888 -p 3888:3888 --restart always -d daocloud.io/daocloud/zookeeper:3.4.10

4、进入容器，并配置zookeeper

sudo docker exec -it zookeeper /bin/bash

5 看下目录结构

bash-4.3# cd /
bash-4.3# ls
bin                   datalog               etc                   media                 proc                  sbin                  tmp                   zookeeper-3.4.10
conf                  dev                   home                  mnt                   root                  srv                   usr
data                  docker-entrypoint.sh  lib                   opt                   run                   sys                   var

注意，zookeeper的安装目录在 /zookeeper-3.4.10，而配置文件在/conf

bash-4.3# cd conf/
bash-4.3# ls
configuration.xsl  log4j.properties   zoo.cfg            zoo_sample.cfg
bash-4.3# vi zoo.cfg 
clientPort=2181
dataDir=/data
dataLogDir=/datalog
tickTime=2000
initLimit=5
syncLimit=2
maxClientCnxns=60

可以看到，它已经把data目录配置好了，就在根目录下的data文件夹下。我们直接拿来用就行了