Install zookeeper on Linux and set boot boot (centos7+zookeeper3.4.10) __linux

1 Download Zookeeper

2 Install start test

2.1 Upload Compressed files and unzip

2.2 New zookeeper configuration file

2.3 Installing JDK

2.4 Start Zookeeper

2.5 View the status of the zookeeper

3 Set Zookeeper to boot (optional)

3.1 Create a new script file in the INIT.D directory

3.1.1 The first option of the content of the document (recommended)

3.1. The second option of the content of the 2 document

3.1.3 Other notes

3.2 Execute a series of commands

3.3 perform test to see if boot up

4 Error and resolution

4.1service zookeeper does not support Chkconfig

4.2 Error contacting service. It is probably not running

5 Downloads related to this blog

keywords: CentOS7 zookeeper3.4.10 java 1 Download Zookeeper

Address: http://mirror.bit.edu.cn/apache/zookeeper/

2 Install start test

Description: (all of the following actions are made by the Staff Administrator account) 2.1 Upload Compressed files and unzip

The CENTOS7 operating system is used here. Create a new directory named Zookeeper in opt directory and upload the downloaded zookeeper-3.4.10.tar.gz file.

as shown in figure:

To enter the directory, the command is:

Cd/opt/zookeeper

To perform the decompression command:

TAR-ZXVF zookeeper-3.4.10.tar.gz

as shown in figure:

      

2.2 New Zookeeper configuration file

Zookeeper need a configuration file named Zoo.cfg, we unzipped, get the official sample file, named Zoo_sample.cfg, this file in the Zookeeper root directory of the Conf subdirectory. If we want to use the default configuration, copy and rename the file directly. The inside can configure the port number, whether the cluster is enabled, and so on, here does not expand, directly perform CP replication rename.

Command is:

CP/OPT/ZOOKEEPER/ZOOKEEPER-3.4.10/CONF/ZOO_SAMPLE.CFG/OPT/ZOOKEEPER/ZOOKEEPER-3.4.10/CONF/ZOO.CFG

As shown in figure:

The above command generates the ZOO.CFG

as shown in figure:

Description: Zoo.cfg can configure things, if you want to build zookeeper cluster, please see this blog: http://blog.csdn.net/pucao_cug/article/details/ 72228973
2.3 Installing JDK

Installing the JDK on Linux is the same, although we use the CENTOS7 operating system here, but we can still install the JDK on Unbuntu, please refer to this blog:

http://blog.csdn.net/pucao_cug/article/details/68948639

Description: Your JDK installation path and zookeeper installation path can not be the same as mine, but if your path is the same as mine, in the third chapter of this blog, the zookeeper set to boot-related configuration, you can not modify those configuration content, direct replication use. 2.4 Start Zookeeper

Go to Zookeeper's Bin directory and command:

Cd/opt/zookeeper/zookeeper-3.4.10/bin

Execute the zkserver.sh script to start the command:

./zkserver.sh Start

as shown in figure:

    

2.5 View the status of the zookeeper

If you are not in the Zookeeper Bin directory at this time, go to the directory first:

Cd/opt/zookeeper/zookeeper-3.4.10/bin

To perform a command to view the zookeeper status:

./zkserver.sh Status

as shown in figure:

    

Standalone is a stand-alone mode. 3 Set Zookeeper to boot (optional) 3.1 Create a new script file in the INIT.D directory

To enter the/ETC/RC.D/INIT.D directory, the command is:

CD/ETC/RC.D/INIT.D

Create a new file named Zookeeper, and the command is:

Touch Zookeeper

as shown in figure:

      

3.1.1 The first option of the content of the document (recommended)

using the VIM command to modify the contents of the file, the contents of the file are written in a number of ways, in addition to the first scenario above, use the following:

#!/bin/bash
#chkconfig: 2345
#description: Service zookeeper
export   java_home=/opt/java/ jdk1.8.0_121
export   zoo_log_dir=/opt/zookeeper/log
zookeeper_home=/opt/zookeeper/ zookeeper-3.4.10
su    root    ${zookeeper_home}/bin/zkserver.sh      "$"

3.1. The second option of the content of the 2 document

use the VIM command to modify the contents of the file:

#!/bin/bash
#chkconfig: 2345
#description: Service zookeeper
export    java_home=/opt/java/ jdk1.8.0_121
export     zoo_log_dir=/opt/zookeeper/log
zookeeper_home=/opt/zookeeper/zookeeper-3.4.10
case  "in   start"  su  root   ${zookeeper_home}/bin/zkserver.sh   start;;
          Start-foreground)  su  root  ${zookeeper_home}/bin/zkserver.sh    start-foreground;;
          Stop)  su  root   ${zookeeper_home}/bin/zkserver.sh   stop;;
          Status)  su root  ${zookeeper_home}/bin/zkserver.sh    status;;
          Restart)  su root   ${zookeeper_home}/bin/zkserver.sh   restart;;
          upgrade) su root   ${zookeeper_home}/bin/zkserver.sh   upgrade;;
          print-cmd) su root   ${zookeeper_home}/bin/zkserver.sh   print-cmd;;
          *)  echo  "Requirestart|start-foreground|stop|status|restart|print-cmd";;
Esac

3.1.3 Other Notes

Note 1: The command to create a new file is touch, and the command to edit the file with VI and VIM is OK. If you don't use the VI and VIM commands, edit the files directly locally and upload them with remote tools, but be aware that if you use a local Windows system, you need to convert the files to UNIX format. There are many conversion tools, such as using notepad++

as shown in figure:

  

NOTE 2: The portion of the file head # annotation in the two scenarios is not less, and the zookeeper path needs to be modified for your own in the file, such as the JDK path. 3.2 Execute a series of commands

To add executable permissions for the new/etc/rc.d/init.d/zookeeper file, the command is:

chmod +x/etc/rc.d/init.d/zookeeper

Add the zookeeper script to the boot entry, and the command is:

chkconfig--add Zookeeper

as shown in figure:

     

If you want to see if you added success, the command is:

chkconfig--list

as shown in figure:

3.3 Perform test to see if boot up

Restart the machine using the command:

reboot

Method One

View the status of zookeeper

Restart the machine, and then execute the command without manually starting the zookeeper:

Service Zookeeper Status

As shown in figure:

Method Two

to see if Port 2181 is enabled, execute the command:

lsof-i:2181

As shown in figure:

Method Three

To view the network status, execute the command:

Netstat-lntup

As shown in figure:

4 Error and resolution 4.1 service zookeeper does not support Chkconfig

Perform chkconfig--add zookeeper error :

Servicezookeeper does not support Chkconfig

problem Reason and resolution:

The header in the/etc/rc.d/init.d/zookeeper script does not add the following words (description can be written casually):

#!/bin/bash
#chkconfig: 2345
#description: Service Zookeeper

4.2Error contacting service. It is probably not running

Execute Service Zookeeper status error :

JMX enabled by default

usingconfig:/opt/zookeeper/zookeeper-3.4.10/bin/. /conf/zoo.cfg

errorcontacting Service. It is probably not running.

problem Reason and resolution:

/etc/rc.d/init.d/zookeeper is not configured, please see 3.1.1 and 3.1.2 configuration, inside must have export java_home This sentence, the following path is your own JDK installation path.

As for export Zoo_log_dir=/opt/zookeeper/log This sentence is optional, meaning to specify zookeeper boot log storage directory, if the directory does not exist, you must manually create one. 5 Downloads related to this blog

The above items can either be downloaded from the Internet or can be downloaded from here, including configuration files.

Download address is:http://download.csdn.net/detail/pucao_cug/9834762