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  Zookeeper cluster deployment
  Add Date : 2018-11-21      

I. Preparatory work before deployment

1. Each host can guarantee normal communication, preferably in the same network segment.

2. Modify the host file, and add the mapping IP host name. Methods to modify the / etc / hosts and etc / hostname file, different Linux distributions approach is not necessarily the same.

3. Turn off the firewall or open ports to use

II. Deployment Zookeeper cluster

1. Zookeeper visit the official website to download the installation package, and extract.

tar -xvzf zookeeper-3.4.6.tar.gz

2. Create a data directory

Execute the following command to create the data directory:

mkdir / usr / zookeeper / data

Execute the following command to create the log directory:

mkdir / usr / zookeeper / data / log

execute the following command to create myid file and write ID:

echo 1 > / usr / zookeeper / data / myid

3. Modify the configuration

Run the following command to edit zoo.cfg file:

cd zookeeper-3.4.6 / conf / & & mv zoo_sample.cfg zoo.cfg & & vi zoo.cfg

Modify configuration is as follows:

dataDir = / usr / zookeeper / data

dataLogDir = / usr / zookeeper / data / log

autopurge.snapRetainCount = 3

autopurge.purgeInterval = 1

In the last added Zookeeper cluster nodes address:

server.1 = node1: 2888: 3888

server.2 = node2: 2888: 3888

server.3 = node3: 2888: 3888

4. Copy configuration files to other nodes

scp -r zookeeper-3.4.6 / node2: / usr /

It should be noted that each node myid is not the same.

III. Start Zookeeper cluster

execute the following command to start Zookeeper Zookeeper service nodes in the cluster:

zookeeper-3.4.6 / bin / zkServer.sh start

Zookeeper execute the following command to view the status of each node in the cluster:

zookeeper-3.4.6 / bin / zkServer.sh status

You can see the node1 node follewer node

IV. HA validation failure is automatically transferred if it works

Zookeeper process using jps command

Use the command kill -9 2432 kill leader process, and then view the status of each node Zookeeper, if there is a leader of the verification handy

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