Under Linux migration Nexus3

Nexus3 migration process is very simple, copy the entire directory to the new server, you can start.

Backup

nexus3 whole directory on the backup to the original server.

$ tar -zcvf nexus3.tar.gz nexus3/

Tips : My nexus3 whole directory has 13G, directly by tmuxusing the scpcommand to copy the remote target server.

migrate

# 创建 nexus 用户
$ useradd nexus
$ passwd nexus
$ su - nexus

# scp 备份文件到新服务器
$ scp [email protected]:~/nexus3.tar.gz .

# 解压
$ tar -zxvf nexus3.tar.gz

# 启动
$ ./nexus3/nexus-3.12.1-01/bin/nexus start

# 验证
$ curl http://localhost:8081/nexus

Profiles

# 查看配置文件，根据需要修改
$ vi /home/nexus/nexus3/nexus-3.12.1-01/etc/nexus-default.properties
## DO NOT EDIT - CUSTOMIZATIONS BELONG IN $data-dir/etc/nexus.properties
##
# Jetty section
application-port=8081
application-host=0.0.0.0
nexus-args=${jetty.etc}/jetty.xml,${jetty.etc}/jetty-http.xml,${jetty.etc}/jetty-requestlog.xml
nexus-context-path=/nexus

# Nexus section
nexus-edition=nexus-pro-edition
nexus-features=\
 nexus-pro-feature

problem

One problem: Nexus max file descriptors

Solution

# 配置 nexus 的 nofile 为65536
$ echo "nexus - nofile 65536" >> /etc/security/limits.conf

# 重启 nexus 生效
$ ./nexus3/nexus-3.12.1-01/bin/nexus restart

问题二：Detected execution as "root" user. This is NOT recommended!

# 启动 nexus，报错警告
$ ./nexus start
WARNING: ************************************************************
WARNING: Detected execution as "root" user.  This is NOT recommended!
WARNING: ************************************************************
Starting nexus

Solution

# 在 bin 目录下创建 nexus.rc
$ echo "run_as_user=nexus" > /home/nexus/nexus3/nexus-3.12.1-01/bin/nexus.rc