ZooKeeper cluster installation, zookeeper Cluster

ZooKeeper cluster installation, zookeeper Cluster

ZooKeeper is a distributed service coordination system provided by Apache and widely used.

Kafka MQ is used in the project, while Kafka fully uses ZooKeeper to implement service coordination between Kafka components, including Broker and Consumer.

The Linux commands in this document start with # As the root user and start with $ as the zk user.

Create zk user

# Groupadd zk

# Useradd-g zk

# Passwd zk

Prepare the installation directory

• Create the ZooKeeper data storage directory:

# Mkdir-p/data/zookeeper

# Chown-R zk: zk/data/zookeeper

• Use zk users to create data and log directories:

$ Mkdir/data/zookeeper/data

$ Mkdir/data/zookeeper/log

Install ZooKeeper

• Decompress the ZooKeeper Binary Package:

# Cd/usr/local/src

# Tar -zxvfzookeeper-3.4.6.tar.gz-C/usr/local/

# Chown-R zk: zk/usr/local/zookeeper-3.4.6

• Modify the ZooKeeper configuration file:

$ Cd/usr/local/The zookeeper-3.4.6/conf

$ Cp zoo_sample.cfg zoo. cfg

$ Vi zoo. cgf

For details about how to modify the configuration, see dataDir, dataLogDir, and the list of Three ZooKeeper servers.

$ Vi log4j. properties

Modify zookeeper. log. dir. For the configuration, see,

• Create a ZooKeeperServerId File

Create a file named myid in the data directory of ZooKeeper with the content ServerId number. In the preceding configuration file, the myid content of the three ZooKeeper files is distributed as 1, 2, and 3.

$ Cd/data/zookeeper/data

$ Cat> myid

Enter 1, press Enter, and then press Ctrl + d.

• Modify the zk user's environment variables:

$ Vi ~ /. Bash_profile

Add the red box to the file:

$ Source ~ /. Bash_profile

Repeat the preceding steps to install ZooKeeper to the other two and build one or three ZooKeeper clusters.

Start ZooKeeper

• Start

All ZooKeeper in the cluster can be started using the following command:

$ ZkServer. sh start

Normally:

JMX enabled by default

Using config:/usr/local/zookeeper-3.4.6/bin/../conf/zoo. cfg

Starting zookeeper... STARTED

Run the following command to check whether ZooKeeper is successfully started:

$ ZkServer. sh status

If the startup is successful, it is displayed on the Leader's machine:

On the Follower machine, the following information is displayed:

Stop

$ ZkServer. sh stop

Zookeeper hbase hadoop Cluster machine Allocation Problem

All the machines you want to manage zookeeper must install zookeeper and write the corresponding ip address in zoo. cfg.
That is to say, you have to install zk on four machines to configure zoo. cfg.
 
Was7 needs to install ihs When configuring the Cluster

You do not need to install IHS. ihs is equivalent to IIS,