ZooKeeper---installation configuration

Zookeeper：

1. It can be used as a cluster management tool.

2, can centrally manage configuration files.

1.1.1. Installation of Zookeeper

Installation Environment:

Linux：centos6.4

Jdk: Version 1.7 and above

Zookeeper is developed in java and can run in windows and linux environments. jdk needs to be installed first.

installation steps:

Step 1: Install jdk

Step 2: Upload the compressed package of zookeeper to the Linux system.

Step 3: Unzip the compressed package

tar -zxvf zookeeper-3.4.6.tar.gz

Step 4: Enter the zookeeper-3.4.6 directory and create a data folder.

cd zookeeper-3.4.6/conf/

Step 5: Rename zoo_sample.cfg to zoo.cfg

[root@localhost conf]# mv zoo_sample.cfg zoo.cfg

Step 6: Edit zoo.cfg and modify the data attribute:

# 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
# 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=/home/hao/zookeeper-3.4.6/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.
#

Step 7: Start zookeeper

[root@localhost bin]# ./zkServer.sh start

closure:

[root@localhost bin]# ./zkServer.sh stop

Check status:

[root@localhost bin]# ./zkServer.sh status

Note: Firewall needs to be turned off.

service iptables stop

Permanently close and modify the configuration to start the firewall without starting:

chkconfig iptables off

If you cannot start zookeeper successfully, you need to delete the zookeeper_server.pid file in the data directory.