阿里云2核2g安装nexus
# 安装 JDK 1.8
sudo yum install -y java-1.8.0-openjdk-devel
# 验证安装
java -version
创建运行用户
cd /opt
sudo wget https://download.sonatype.com/nexus/3/latest-unix.tar.gz
sudo tar -xzf latest-unix.tar.gz
sudo mv nexus-3* nexus
``sudo useradd -r -m -U -d /opt/nexus -s /bin/bash nexus
sudo chown -R nexus:nexus /opt/nexus
sudo chown -R nexus:nexus /opt/sonatype-work
``
创建 systemd 服务文件：
sudo vi /etc/systemd/system/nexus.service
写入以下内容：
[Unit]
Description=Nexus Service
After=network.target
[Service]
Type=forking
LimitNOFILE=65536
User=nexus
Group=nexus
ExecStart=/opt/nexus/bin/nexus start
ExecStop=/opt/nexus/bin/nexus stop
Restart=on-abort
[Install]
WantedBy=multi-user.target
加载并启动服务
```java
sudo systemctl daemon-reload
sudo systemctl start nexus
sudo systemctl enable nexus
推荐修改为如下内容（适用于 2GB 内存服务器）：
vim /opt/nexus/bin/nexus.vmoptions
-Xms256M
-Xmx512M
-XX:MaxDirectMemorySize=512M
-XX:+UnlockDiagnosticVMOptions
-XX:+LogVMOutput
-XX:LogFile=../sonatype-work/nexus3/log/jvm.log
-XX:-OmitStackTraceInFastThrow
-Djava.net.preferIPv4Stack=true
-Dkaraf.home=.
-Dkaraf.base=.
-Dkaraf.etc=etc/karaf
-Djava.util.logging.config.file=etc/karaf/logging.properties
-Dorg.ops4j.pax.url.mvn.localRepository=file:../sonatype-work/nexus3/cache
sudo -u nexus /opt/nexus/bin/nexus run