zookeeper的安装和配置

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1、三个节点执行：rpm -ivh zookeeper-3.4.6-redhat6.4.x86_64.rpm
2、find / -name zoo.cfg

vim /etc/zookeeper/conf/zoo.cfg

配置内容如下：

maxClientCnxns=50
# 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.
dataDir=/var/lib/zookeeper/data
dataLogDir=/var/lib/zookeeper/dataLogDir //检查是否存在目录，若不存在，要在系统中创建这两个目录

# the port at which the clients will connect
clientPort=2181

autopurge.purgeInterval=3
autopurge.SnapRetainCount=3

server.1=192.168.232.100:2888:3888
server.2=192.168.232.101:2888:3888
server.3=192.168.232.102:2888:3888

3、把zoo.cfg配置文件拷贝到另外两个节点

scp /etc/zookeeper/conf/zoo.cfg root@192.168.232.101:/etc/zookeeper/conf/

scp /etc/zookeeper/conf/zoo.cfg root@192.168.232.102:/etc/zookeeper/conf/

4、如2中说明，在三个节点上创建相应的目录

mkdir -p /var/lib/zookeeper/data

mkdir -p /var/lib/zookeeper/dataLogDir

5、在三台机器上的dataDir指定的目录下创建myid文件，其内容分别为zoo.cfg文件中的server.x的x（例如server.1=192.168.232.100:2888:3888，其对应的myid内容为1）

6、vim /etc/zookeeper/conf/java.env 内容如下：

# zk buffer size 64M
export JVMFLAGS="-Djute.maxbuffer=0x3FFFFC0 $JVMFLAGS"

# java heap size 1GB
export JVMFLAGS="-Xms1g -Xmx1g $JVMFLAGS" //该项设置为1g，根据自己机器的内存情况来设置，太大会导致zkServer.sh脚本启动失败

7、启动zookeeper

./zkServer.sh start

./zkServer.sh status

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