docker-compose.yml 安装 nexus3（系统Centos7）

1. 创建目录：/usr/local/docker/nexus/nexus-data(nexus-data数据卷目录）在nexus下编写docker-compose.yml，如下

   
   version: '3'
   services:
     nexus:
       restart: always
       image: sonatype/nexus3
       container_name: nexus3
       ports:
         - 8081:8081
       volumes:
         - /usr/local/docker/nexus/nexus-data:/nexus-data

    

2.  运行docker-compose up即可

3.  

   遇到的问题

    

   cannot create directory '../sonatype-work/nexus3/log'，Permission denied

   发现是数据卷权限问题，

   $ mkdir /some/dir/nexus-data && chown -R 200 /some/dir/nexus-data
   $ docker run -d -p 8081:8081 --name nexus -v /some/dir/nexus-data:/nexus-data sonatype/nexus3

   上面是官方修改权限的命令原因SELinux,查看selinux配置文件

   vi /etc/sysconfig/selinux

   
   
   # This file controls the state of SELinux on the system.
   # SELINUX= can take one of these three values:
   #     enforcing - SELinux security policy is enforced.
   #     permissive - SELinux prints warnings instead of enforcing.
   #     disabled - No SELinux policy is loaded.
   SELINUX=disabled
   # SELINUXTYPE= can take one of three two values:
   #     targeted - Targeted processes are protected,
   #     minimum - Modification of targeted policy. Only selected processes are protected.
   #     mls - Multi Level Security protection.
   SELINUXTYPE=targeted
   

    如果SELINUX=enforcing 修改为disabled（也可以命令：sestatus 查看状态再修改），之后重启系统，运行步骤2

4.          Centos7 SELinux操作链接：  https://www.cnblogs.com/activiti/p/7552677.html                           参考：https://blog.youkuaiyun.com/yoloyy/article/details/80205279