zookeeper installation deployment
Here, zookeeper uses zookeeper-3.4.5.tar.gz
1. Local mode installation and deployment
1.1 preparation before installation
(1) zookeeper download address: http://archive.apache.org/dist/zookeeper/
(2) Install jdk
(3) Copy Zookeeper installation package to Linux system
(4) Enter the directory where the zookeeper installation package is stored and unzip it to the specified directory
tar -zxvf zookeeper-3.4.5.tar.gz -C /opt/module/
(5) After decompression, the file name is changed to zookeeper
mv zookeeper-3.4.5 zookeeper
1.2 setting zookeeper environment variable
Command:
vi /root/.bash_profile
Add the following:
export ZOOKEEPER_HOME=/opt/module/zookeeper export PATH=$PATH:$ZOOKEEPER_HOME/bin
Make settings effective immediately:
source /root/.bash_profile
1.3 configuration modification
(1) Set / opt/module/zookeeper/conf to the zoo under this path_ Modify sample.cfg to zoo.cfg;
mv zoo_sample.cfg zoo.cfg
(2) Open the zoo.cfg file and modify the dataDir path:
vi zoo.cfg
Amend the following:
dataDir=/opt/module/zookeeper/zkData
(3) Create the zkData folder in the directory / opt/module/zookeeper /
mkdir zkData
1.4 operating Zookeeper
(1) Start Zookeeper
[root@master zookeeper]# bin/zkServer.sh start Or enter bin catalogue [root@master bin]# zkServer.sh start
(2) Check whether the process starts
jps
The startup is successful, as shown in the figure:
(3) View status:
[root@master zookeeper]# bin/zkServer.sh status Or enter bin catalogue [root@master bin]# zkServer.sh status
The status is shown in the figure:
(4) Start client:
[root@master zookeeper]# bin/zkCli.sh
(5) Exit client:
[zk: localhost:2181(CONNECTED) 0] quit
(6) Stop Zookeeper
[root@master zookeeper]# bin/zkServer.sh stop
2. Distributed installation and deployment (competition deployment)
2.1 cluster planning
Deploy Zookeeper on the master, slave01 and slave02 nodes.
2.2 decompression and installation
(1) Enter the directory where the zookeeper installation package is stored, and unzip the zookeeper installation package to the / opt/module / directory
tar -zxvf zookeeper-3.4.5.tar.gz -C /opt/module/
(2) After decompression, the file name is changed to zookeeper
mv zookeeper-3.4.5 zookeeper
2.3 setting zookeeper environment variable
Command:
vi /root/.bash_profile
Add the following:
export ZOOKEEPER_HOME=/opt/module/zookeeper export PATH=$PATH:$ZOOKEEPER_HOME/bin
Make settings effective immediately:
source /root/.bash_profile
Copy environment variables to slave01 and slave01 nodes
slave01 Node: scp -r /root/.bash_profile root@slave01:/root/.bash_profile slave02 Node: scp -r /root/.bash_profile root@slave02:/root/.bash_profile
2.4 configure server number
(1) Create zkData in the directory / opt/module/zookeeper /
mkdir zkData
(2) Create a myid file in the / opt/module/zookeeper/zkData directory
touch myid
(3) Edit myid file
vi myid
Add the number corresponding to the server in the file:
2
2.5 configuration zoo.cfg file
(1) Rename the zoo in the directory / opt/module/zookeeper/conf_ Sample.cfg is zoo.cfg
mv zoo_sample.cfg zoo.cfg
(2) Open the zoo.cfg file
vi zoo.cfg
Modify data storage path configuration
dataDir=/opt/module/zookeeper/zkData
Add the following configuration
server.2=master:2888:3888 server.3=slave01:2888:3888 server.4=slave02:2888:3888
(3) Copy the configured zookeeper to other nodes
slave01 Node: scp -r /opt/module/zookeeper/ root@slave01:/opt/module/zookeeper/ slave02 Node: scp -r /opt/module/zookeeper/ root@slave02:/opt/module/zookeeper/
And modify the contents of myid file as 3 and 4 on slave01 and slave02 respectively
2.6 cluster operation
(1) Start Zookeeper of three nodes respectively
master Node: [root@master zookeeper]# bin/zkServer.sh start slave01 Node: [root@slave01 zookeeper]# bin/zkServer.sh start slave02 Node: [root@slave02 zookeeper]# bin/zkServer.sh start
(2) Check whether the process starts
jps
The startup is successful, as shown in the figure:
(3) View the status of three nodes
master Node: [root@master zookeeper]# bin/zkServer.sh status slave01 Node: [root@slave01 zookeeper]# bin/zkServer.sh status slave02 Node: [root@slave02 zookeeper]# bin/zkServer.sh status
The status of the three nodes is shown in the figure:
(4) Start client:
[root@master zookeeper]# bin/zkCli.sh
(5) Exit client:
[zk: localhost:2181(CONNECTED) 0] quit
(6) Stop Zookeeper
[root@master zookeeper]# bin/zkServer.sh stop