Docker实战-NFS安装

Docker安装

1、 使用官方安装脚本自动安装

 #curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun

2、启动 Docker 服务

 #systemctl start docker  

3、确认docker 组件已经启动

 # ps aux | grep docker
 root      11568  0.1  3.0 661408 56004 ?        Ssl  08:44   0:54 /usr/bin/dockerd -H fd:// -- 
 containerd=/run/containerd/containerd.sock

NFS介绍

  NFS是Network File System的缩写，即网络文件系统。它的主要功能是通过网络（一般是局域网）让不同的主机系统之间可以共享文件或目录。

下载NFS镜像文件

1、从docker-hub拉取NFS镜像

#docker pull erichough/nfs-server

2、验证镜像是否下载成功

#docker images
REPOSITORY                 TAG       IMAGE ID        CREATED            SIZE
erichough/nfs-server     latest    52e16db3eced   21 months ago   15.8MB

创建共享目录

1、创建共享目录

#mkdir -p /home/ap/nas_b

2、加载NFS驱动模块

#modprobe nfs
#modprobe nfsd

启动NFS容器

启动NFS容器

#docker run 
 --privileged -d    \
 -v /home/ap/nas_a:/nas_a    \
 -e NFS_EXPORT_0='/nas_a  *(rw,sync,no_root_squash,no_all_squash,no_subtree_check,nohide,crossmnt)'  \
 -p 2049:2049   -p 2049:2049/udp   \
 -p 111:111     -p 111:111/udp     \
 -p 32765:32765 -p 32765:32765/udp \
 -p 32767:32767 -p 32767:32767/udp \
 -it --name ai-nas-a \
 erichough/nfs-server

查看容器状态

查看容器运行状态

#docker ps -a
CONTAINER ID   IMAGE                  COMMAND                  CREATED          STATUS          PORTS                                                                                                                                                                                                                                                                                                                                                            NAMES
3a846cec1820   erichough/nfs-server   "/usr/local/bin/entr…"   25 minutes ago   Up 25 minutes   0.0.0.0:111->111/tcp, 0.0.0.0:111->111/udp, :::111->111/tcp, :::111->111/udp, 0.0.0.0:2049->2049/tcp, 0.0.0.0:2049->2049/udp, :::2049->2049/tcp, :::2049->2049/udp, 0.0.0.0:32765->32765/tcp, 0.0.0.0:32765->32765/udp, :::32765->32765/tcp, :::32765->32765/udp, 0.0.0.0:32767->32767/tcp, 0.0.0.0:32767->32767/udp, :::32767->32767/tcp, :::32767->32767/udp   ai-nas-a

宿主机挂载共享目录

宿主机充当客户端挂载容器共享的目录

#mount -v -t nfs -o ro,nfsvers=3,nolock,proto=udp,port=2049 192.168.234.128:/nas_a    /home/ap/nas_a

mount.nfs: timeout set for Tue Nov 16 00:28:30 2021
mount.nfs: trying text-based options 'nfsvers=3,nolock,proto=udp,port=2049,addr=192.168.234.128'
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.234.128 prog 100005 vers 3 prot UDP port 32767

验证是否挂载成功

验证过载状态

#showmount -a 192.168.234.128
All mount points on 192.168.234.128:
192.168.234.128:/nas_a

#df
Filesystem                              1K-blocks             Used Available      Use%            Mounted on
192.168.234.128:/nas_a       9118720 7818816      1299904          86%            /home/ap/nas_a