创建service，本地服务器路径/usr/local/nexus/nexus-3.18.0-01/bin/nexus
vim /lib/systemd/system/nexus.service
添加如下内容：
[Unit]
Description=nexus
After=network.target
[Service]
Type=forking
ExecStart=/usr/local/nexus/nexus-3.18.0-01/bin/nexus start
ExecReload=/usr/local/nexus/nexus-3.18.0-01/bin/nexus stop
ExecStop=/usr/local/nexus/nexus-3.18.0-01/bin/nexus stop
PrivateTmp=true
[Install]
WantedBy=multi-user.target
设置开机启动
systemctl enable nexus.service
重启计算机
