【【【【【创建本地镜像及安装gluster操作手册】】】】】
首先，把准备的镜像从网络上下载或直接拷贝到/home/ecp2/mirror 目录下（该目录是根据该案例设定，可根据需要创建自己的文件目录）
1、sudo mkdir /home/ecp2/mirror 创建mirror目录，把镜像拷贝到mirror下
2. sudo mkdir -p /media/CentOS 创建CentOS目录，把磁盘.iso镜像mount到CentOS目录下
3、sudo mount /dev/sr0 /media/CentOS 把iso安装镜像挂在到/media/CentOS 目录下，该目录是 /etc/yum.repos.d/CentOS-Media.repo 镜像文件的baseurl默认的第一个目录
修改镜像有效路径: sudo vi /etc/yum.repos.d/CentOS-Media.repo
[ecp2@localhost root]$ sudo vi /etc/yum.repos.d/CentOS-Media.repo
# CentOS-Media.repo
#
# This repo can be used with mounted DVD media, verify the mount point for
# CentOS-7. You can use this repo and yum to install items directly off the
# DVD ISO that we release.
#
# To use this repo, put in your DVD and use it with the other repos too:
# yum --enablerepo=c7-media [command]
#
# or for ONLY the media repo, do this:
#
# yum --disablerepo=\* --enablerepo=c7-media [command]
[c7-media]
name=CentOS-$releasever - Media
baseurl=file:///media/CentOS/
file:///media/cdrom/
file:///media/cdrecorder/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
[offline-extras]
name=CentOS-$releasever - Media
baseurl=file:///home/ecp2/mirror/extras/x86_64
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 -------这块新增的内容，配置为本地镜像home/ecp2/mirror/extras/x86_64 路径下的镜像， 数字签名为etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
4、sudo yum --disablerepo=\* --enablerepo=c7-media,offline-extras list | grep gluster -----该命令是查看镜像中的gluster中的镜像 查看安装gluster安装的镜像，如【centos-release-gluster38.noarch 】
5、sudo yum --disablerepo=\* --enablerepo=c7-media,offline-extras install centos-release-gluster38.noarch ----该命令 安装centos-release-gluster38.noarch
5.1、 ls /etc/pki/rpm-gpg/ ------------查看pki-------多出来 RPM-GPG-KEY-CentOS-SIG-Storage
5.2、 ls /home/ecp2/mirror/storage/x86_64/gluster-3.8 ------------新生成的镜像
6、sudo vi /etc/yum.repos.d/CentOS-Media.repo ----修改镜像配置
[ecp2@localhost root]$ vi /etc/yum.repos.d/CentOS-Media.repo
# CentOS-Media.repo
#
# This repo can be used with mounted DVD media, verify the mount point for
# CentOS-7. You can use this repo and yum to install items directly off the
# DVD ISO that we release.
#
# To use this repo, put in your DVD and use it with the other repos too:
# yum --enablerepo=c7-media [command]
#
# or for ONLY the media repo, do this:
#
# yum --disablerepo=\* --enablerepo=c7-media [command]
[c7-media]
name=CentOS-$releasever - Media
baseurl=file:///media/CentOS/
file:///media/cdrom/
file:///media/cdrecorder/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
[offline-extras]
name=CentOS-$releasever - Media
baseurl=file:///home/ecp2/mirror/extras/x86_64
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
[offline-storage-gluster38]
name=CentOS-$releasever - Media
baseurl=file:///home/ecp2/mirror/storage/x86_64/gluster-3.8
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-G ------这块新增内容配置镜像home/ecp2/mirror/storage/x86_64/gluster-3.8 为之后安装gluster，如【sudo yum install glusterfs-server glusterfs glusterfs-fuse】
7、sudo yum --disablerepo=\* --enablerepo=c7-media,offline-extras,offline-storage-gluster38 list | grep glusterfs ---查看新配置的镜像
8、sudo yum --disablerepo=\* --enablerepo=c7-media,offline-extras,offline-storage-gluster38 install glusterfs-server glusterfs glusterfs-fuse -------安装gluster环境 glusterfs-server glusterfs glusterfs-fuse
9、sudo systemctl list-unit-files glusterd.service -----该命令查看gluster服务是否启动
10、sudo systemctl enable glusterd.service && sudo systemctl start glusterd.service ----sudo systemctl enable glusterd.service设置开机启动， sudo systemctl start glusterd.service
11、sudo systemctl -l status glusterd.service --查看gluster服务启动状态
[ecp2@localhost x86_64]$ sudo systemctl -l status glusterd.service
● glusterd.service - GlusterFS, a clustered file-system server
Loaded: loaded (/usr/lib/systemd/system/glusterd.service; enabled; vendor preset: disabled)
Active: active (running) since 二 2017-03-14 14:05:07 CST; 45s ago
Process: 18453 ExecStart=/usr/sbin/glusterd -p /var/run/glusterd.pid --log-level $LOG_LEVEL $GLUSTERD_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 18454 (glusterd)
CGroup: /system.slice/glusterd.service
└─18454 /usr/sbin/glusterd -p /var/run/glusterd.pid --log-level INFO
3月 14 14:05:07 localhost.localdomain systemd[1]: Starting GlusterFS, a clustered file-system server...
3月 14 14:05:07 localhost.localdomain systemd[1]: Started GlusterFS, a clustered file-system server.
12、sudo netstat -tpnl --查看服务信息（哪些服务在启动，占用端口等信息）
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