zookeeper集群安装部署
1.下载安装zookeeper
#下载地址http://www.apache.org/dyn/closer.cgi/zookeeper
wget http://labs.mop.com/apache-mirror/zookeeper/zookeeper-3.4.5/zookeeper-3.4.5.tar.gz
tar zxvf zookeeper-3.4.5.tar.gz -C/usr/local/
mv zookeeper-3.4.5 zookeeper
2.配置zookeeper,以下操作在三台server上执行
#创建配置文件
cd /usr/local/zookeeper
cp zoo_sample.cfg zoo.cfg
vi zoo.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/tmp/zookeeper
clientPort=2181
server.1=cc-monitor:2888:3888
server.2=cc-staging-front2:2888:3888
server.3=cc-staging-session:2888:3888
#创建数据目录
mkdir -p /tmp/zookeeper
#配置myid文件
在dataDir目录下新建myid文件并设置id号
id号即为zoo.cfg文件中server.后的数字，如server.1=cc-monitor:2888:3888即表示cc-monitor机器中的myid号为1
#分别在三台server设置对应的id
echo 1 > /tmp/zookeeper/myid
echo 2 > /tmp/zookeeper/myid
echo 3 > /tmp/zookeeper/myid
#添加环境变量
vi /etc/profile
export ZOOKEEPER_HOME=/usr/local/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin
source /etc/profile
3.启动服务
# 启动zkserver,不报错就行
#$ZOOKEEPER_HOME/bin/zkServer.shstart
JMX enabled by default
Using config:/usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
#查看三台zkserver的状态,1台leader2台follower
#$ZOOKEEPER_HOME/bin/zkServer.sh status
JMX enabled by default
Using config:/usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
# $ZOOKEEPER_HOME/bin/zkServer.shstatus
JMX enabled by default
Using config:/usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: leader
#$ZOOKEEPER_HOME/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
4.进行同步测试
#在其中1台上创建文件
zkCli.sh -server127.0.0.1:2181
create /mytest test
#在另外2台上进行查询，是否同步
ls /
get/mytest
test
cZxid = 0x100000002
ctime = Wed Apr 24 22:45:04 PDT 2013
mZxid = 0x100000002
mtime = Wed Apr 24 22:45:04 PDT 2013
pZxid = 0x100000002
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 4
numChildren = 0
#
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