zookeeper super detailed installation cluster deployment

Article directory

  • 1. Zookeeper official website download
  • Two, JDK environment installation
  • Three, zookeeper installation
    • 1. zookeeper decompression
    • 2. Zookeeper configuration file introduction
  • clone server
    • 1. Network check
    • 2. Cluster configuration
    • 3. Start the cluster
    • 4. Error record

1. Zookeeper official website download

  • Download address: https://archive.apache.org/dist/zookeeper/
  • Find the corresponding version and download

2. JDK environment installation

  • Directly use the yum command to install online
yum install -y java-1.8.0-openjdk.x86_64
  • Environment variable configuration
sudo vi /etc/profile

export JAVA_HOME=/usr/local/jdk1.8.0_291/
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
  • reload configuration file
sudo source /etc/profile

3. zookeeper installation

1.zookeeper decompression

  • First upload the downloaded apache-zookeeper-3.5.9-bin.tar.gz to the server
  • Unzip and install to the /usr/local/ directory
tar -zxvf apache-zookeeper-3.5.9-bin.tar.gz -C /usr/local/

  • As shown below

  • Renamed to zookeeper

mv apache-zookeeper-3.5.9-bin zookeeper
  • As shown below

2.zookeeper configuration file introduction

  • Enter the zookeeper configuration file usr/local/zookeeper/conf/
  • Rename the zoo_sample.cfg configuration file to zoo.cfg
mv zoo_sample.cfg zoo.cfg
  • Configuration file introduction
# The number of milliseconds of each tick
# The actual unit used to calculate the base
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
# initialization time
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgment
# election time
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
# Configure zookeeper data storage path
dataDir=/tmp/zookeeper
# 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.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1
  • First create a storage directory for zookeeper data and logs in the zookeeper directory, and add file read and write permissions
mkdir data
sudo chmod 777 data
mkdir logs
sudo chmod 777 logs
  • As shown in the picture
  • Modify the configuration file
dataDir=/usr/local/zookeeper/data
dataLogDir=/usr/local/zookeeper/logs
  • cluster configuration
# cluster configuration 2888: election port 3888: voting port
server.1=server001:2888:3888
server.2=server002:2888:3888
server.3=server003:2888:3888
  • KAFKA001 represents the host name, and can also write the IP address
  • View hostname hostnamectl
  • set hostname
sudo hostnamectl set-hostname server001
  • Create the /usr/local/zookeeper/data data directory before adding the unique identifier of this machine cluster
  • Write 1
  • Note: the data in myid is consistent with service
echo "1" > myid
  • Configure the host file vi /etc/hosts Add the host names and IP addresses of the three clusters
192.168.204.130 server001
192.168.204.131 server002
192.168.204.132 server003
  • As shown below

Clone server

  • See this article for detailed operations: VMware virtual machine cloning, copying virtual machines

1. Network inspection

  • After cloning, check that the three servers can access each other’s IP

2. Cluster configuration

  • Remember to modify the hostnames of the latter two servers
sudo hostnamectl set-hostname server002
sudo hostnamectl set-hostname server003
  • Create the /usr/local/zookeeper/data data directory before and add the unique identifier of this machine cluster [modify the latter two]
  • The latter two machines respectively write 2, 3
echo "2" > myid
echo "3" > myid

3. Start the cluster

  • Enter the /usr/local/zookeeper/bin directory and execute ./zkServer.sh start
# can be executed separately on three servers
/usr/local/zookeeper/bin/zkServer.sh start
  • check status
# can be executed separately on three servers
/usr/local/zookeeper/bin/zkServer.sh status
  • As shown below

4. Error record

  • If an exception occurs ERROR
  • Execute the command ./zkServer.sh start-foreground to see the error details in the log to further determine the cause of the error
/usr/local/zookeeper/bin/zkServer.sh start-foreground
  • It is necessary to rule out that the firewall is closed first, related commands: CentOS7 [manage firewall port commands]