Mavn builds nexus private server

One 、 Purpose

occasionally Java Development is building projects , Because there are some dependencies, the whole project will be built , thus Jenkins Construction is very slow , It takes four to five minutes to complete the construction . So you can build Mavn Private clothes Nexus, Development will be public jar Upload the package to Nexus, In this way, no additional construction is required during construction , So as to improve Jenkins Build performance .

Two 、 Deploy

1、 download

• Nexus edition ：3.x

• Nexus Installation package download link ：https://help.sonatype.com/repomanager3/product-information/download

  

2、 decompression

[[email protected] ~]# tar xzf nexus-3.39.0-01-unix.tar.gz

3、 To configure

To configure JDK route ：

[[email protected] ~]# cd nexus-3.39.0-01/bin/
[[email protected] bin]# cat nexus
...
# Uncomment the following line to override the JVM search sequence
# INSTALL4J_JAVA_HOME_OVERRIDE=
# Uncomment the following line to add additional VM parameters
# INSTALL4J_ADD_VM_PARAMS=
INSTALL4J_JAVA_HOME_OVERRIDE=/opt/jdk
...

modify JVM Heap size （ The default is 2703M）： Modify... According to the actual situation

[[email protected] ~]# cd nexus-3.39.0-01/bin/
[[email protected] bin]# cat nexus.vmoptions
...
-Xms512m
-Xmx512m
...

Modify the default port （ The default is 8081）：

[[email protected] ~]# cd nexus-3.39.0-01/etc/
[[email protected] etc]# cat nexus-default.properties 
...
application-port=8181
application-host=0.0.0.0
...

4、 start-up

[[email protected] ~]# cd nexus-3.39.0-01/bin/
#  This startup is background startup 
[[email protected] bin]# ./nexus start
WARNING: ************************************************************
WARNING: Detected execution as "root" user.  This is NOT recommended!
WARNING: ************************************************************
Starting nexus

#  stop it 
# [[email protected] bin]# ./nexus stop
#  restart 
# [[email protected] bin]# ./nexus restart
#  The front desk starts （ Print log ）
# [[email protected] bin]# ./nexus run

5、 visit

http://139.198.105.50:8181/

Click on the top right corner Sign in Sign in

• user name ：admin

• password ：find Look for （ Generally speaking, it is related to Nexus The extracted files of are in the same directory ）

  [[email protected] bin]# find / -name "admin.password"
  /root/sonatype-work/nexus3/admin.password
  [[email protected] ~]# cd /root/sonatype-work/nexus3/
  [[email protected] nexus3]# cat admin.password 
  4649fc72-d96b-44a5-93eb-e7101db22072
  

After entering the initial password, you will be prompted to set a new password ：

The last to enter web page ：

thus ,Nexus installation is complete ！！ Then there are some operations .

3、 ... and 、FAQ

1、JDK Version of the problem

#  current version 11.X
[[email protected] opt]# java -version
java version "11.0.2" 2018-10-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.2+7-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.2+7-LTS, mixed mode)

#  Initiate error reporting （ say JDK Version must be 1.8.X）
[email protected] bin]# ./nexus start
No suitable Java Virtual Machine could be found on your system.
The version of the JVM must be 1.8.
Please define INSTALL4J_JAVA_HOME to point to a suitable JVM.

2、 Solution

Reduce JDK Version is 1.8.X To solve the problem .

[[email protected] opt]# wget https://mirrors.tuna.tsinghua.edu.cn/AdoptOpenJDK/8/jdk/x64/linux/OpenJDK8U-jdk_x64_linux_hotspot_8u322b06.tar.gz
[[email protected] opt]# tar xzf OpenJDK8U-jdk_x64_linux_hotspot_8u322b06.tar.gz
#  Original JDK Home directory mv Backup 
[[email protected] opt]# mv /opt/jdk /opt/jdk.bak
#  the 1.8.X edition mv Renamed as JDK that will do 
[[email protected] opt]# mv jdk8u322-b06/ jdk

#  Now look at the current JDK edition （ It has come down ）
[[email protected] opt]# java -version
openjdk version "1.8.0_322"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_322-b06)
OpenJDK 64-Bit Server VM (Temurin)(build 25.322-b06, mixed mode)

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