Shulou(Shulou.com)06/03 Report--

ELK 7.4.1 installation configuration manual of the pre-environment build one. Openjdk installation 1. Description

Because elasticsearch 7.4.1 depends on java 11 or above to run, you choose to install it directly with the version of openjdk-13.0.1.

This chapter mainly introduces the environment construction of openjdk.

Jdk download link: https://pan.baidu.com/s/1ZRPFSSTvsk2n4s8KzrLF8A extraction code: ll43

2. Installation

Decompress openjdk

[root@node01 ~] # tar zxvf openjdk-13.0.1_linux-x64_bin.tar.gz

Cut the extracted directory under / usr/local

[root@node01 ~] # mv jdk-13.0.1/ / usr/local/

Configure environment variables

[root@node01 ~] # vim / etc/profile

Export JAVA_HOME=/usr/local/jdk-13.0.1/

Export PATH=$PATH:$JAVA_HOME/bin

Export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH

Load environment variables to take effect

[root@node01 ~] # source / etc/profile

# if it does not take effect after loading, exit exits the terminal and reopens it

Check to see if java is installed successfully

[root@node01 ~] # java-version

Openjdk version "13.0.1" 2019-10-15

OpenJDK Runtime Environment (build 13.0.1 / 9)

OpenJDK 64-Bit Server VM (build 13.0.1 / 9, mixed mode, sharing)

Because the later elk will call the java under / usr/sbin these paths, link the executable file of the java to it.

[root@node01] # ln-s / usr/local/jdk-13.0.1/bin/* / usr/sbin/ II. Adjustment of system parameters 1. Description

Because elk will involve multi-file opening, and the default openfile of the system is relatively small, it is necessary to make some adjustments to the kernel.

2. Configuration

Set the number of open file links by modifying kernel parameters

Addition at the end of vi / etc/sysctl.conf #

Vm.max_map_count=655360

Fs.file-max=655360

Set up soft nproc

Vi / etc/security/limits.d/20-nproc.conf # to see if the content is

* soft nproc 4096

Root soft nproc unlimited

Set up limits

Vi / etc/security/limits.conf # additions

* hard nofile 65536

* soft nproc 2048

* hard nproc 4096

* soft memlock unlimited

* hard memlock unlimited

Make the kernel settings take effect

[root@node01 elasticsearch] # sysctl-p

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