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本文介绍如何创建本地CentOS 6/CentOS 7镜像的技巧。当你拥有大量系统并且希望节省带宽，紧固软件包安装，网络安装和系统更新时，这将非常有用。本文将使用rsync同步来自上游的镜像，用于保存同步内容的路径是/var/mirrors/，确保调整具有足够空间的文件系统的路径，或者安装新的磁盘/分区。先参考使用rsync命令同步本地目录和远程主机目录。
Bash脚本同步CentOS 6/7镜像 下面的脚本将同步CentOS 6/CentOS 7镜像，用你想要的替换目录变量，将脚本保存到文件中，make： #!/bin/bash if [ -f /var/lock/subsys/rsync_updates ]; then echo "Updates via rsync already running." exit 0 fi base_dir="/var/mirrors/centos/" centos_7_mirror_dir="/var/mirrors/centos/7/" centos_6_mirror_dir="/var/mirrors/centos/6/" touch /var/lock/subsys/rsync_updates if [[ -d "$centos_7_mirror_dir" && -d "$centos_6_mirror_dir" ]] ; then rsync -avSHP --delete rsync://mirror.liquidtelecom.com/centos/7/ "$centos_7_mirror_dir" && \ rsync -avSHP --delete rsync://mirror.liquidtelecom.com/centos/6/ "$centos_6_mirror_dir" && \ # sync keys rsync -avSHP --delete rsync://mirror.liquidtelecom.com/centos/RPM-GPG-KEY-CentOS-7 "$base_dir" && \ rsync -avSHP --delete rsync://mirror.liquidtelecom.com/centos/RPM-GPG-KEY-CentOS-6 "$base_dir" && \ rm -rf /var/lock/subsys/rsync_updates else echo "Directories doesn't exist" fi
用于同步Epel镜像的Bash脚本 #!/bin/bash if [ -f /var/lock/subsys/rsync_updates ]; then echo "Updates via rsync already running." exit 0 fi epel6_mirror_dir="/var/mirrors/epel/6/x86_64" epel7_mirror_dir="/var/mirrors/epel/7/x86_64" base_dir="/var/mirrors/epel/" touch /var/lock/subsys/rsync_updates if [[ -d "$epel6_mirror_dir" && -d "$epel7_mirror_dir" ]] ; then rsync -avSHP --delete rsync://mirror.wbs.co.za/fedora-epel/6/x86_64/ "$epel6_mirror_dir" && \ rsync -avSHP --delete rsync://mirror.wbs.co.za/fedora-epel/7/x86_64/ "$epel7_mirror_dir" && \ rsync -avSHP --delete rsync://mirror.wbs.co.za/fedora-epel/RPM-GPG-KEY-EPEL-7 "$base_dir" && \ rsync -avSHP --delete rsync://mirror.wbs.co.za/fedora-epel/RPM-GPG-KEY-EPEL-6 "$base_dir" && \ rm -rf /var/lock/subsys/rsync_updates else echo "Directories doesn't exist" fi if [[ $? -eq '0' ]]; then echo "" echo "Sync successful.." else echo " Syncing failed" exit 1 fi 这些脚本可以在cron中运行，以保持镜像最新。
用Nginx服务镜像 同步完成后，你可以通过使用nginx开始使用它们。 安装nginx： yum -y install epel-release yum -y install nginx 然后添加配置文件： cat /etc/nginx/conf.d/centos.conf server { listen 80; server_name centos.mirrors.domain.com; root /var/mirrors/centos/; location / { autoindex on; } } 对于epel： cat /etc/nginx/conf.d/epel.conf server { listen 80; server_name epel.mirrors.domain.com; root /var/mirrors/epel; location / { autoindex on; } } 启动并启用nginx： systemctl start nginx systemctl enable nginx
配置CentOS Server以使用镜像 CentOS Base镜像： cd /etc/yum.repos.d/ mkdir old mv CentOS* old vim centos.repo 添加以下内容： [base] name=CentOS-$releasever - Base baseurl=http://centos.mirrors.domain.com/$releasever/os/$basearch/ enabled=1 gpgcheck=1 gpgkey=http://centos.mirrors.domain.com/$releasever/os/$basearch/RPM-GPG-KEY-CentOS-7 [updates] name=CentOS-$releasever - Updates baseurl=http://centos.mirrors.domain.com/$releasever/updates/$basearch/ enabled=1 gpgcheck=1 gpgkey=http://centos.mirrors.domain.com/$releasever/os/$basearch/RPM-GPG-KEY-CentOS-7 [extras] name=CentOS-$releasever - Extras baseurl=http://centos.mirrors.domain.com/$releasever/extras/$basearch/ enabled=0 gpgcheck=1 gpgkey=http://centos.mirrors.domain.com/$releasever/os/$basearch/RPM-GPG-KEY-CentOS-7 [centosplus] name= CentOS-$releasever - Plus baseurl=http://centos.mirrors.domain.com/$releasever/centosplus/$basearch/ enabled=0 gpgcheck=1 gpgkey=http://centos.mirrors.domain.com/$releasever/os/$basearch/RPM-GPG-KEY-CentOS-7 通过更新repo缓存来测试repos是否正常工作： yum clean all yum makecache fast yum -v repolist Epel Mirrors： # cat /etc/yum.repos.d/epel.repo [epel] name=Extra Packages for Enterprise Linux 7 - $basearch baseurl=http://epel.mirrors.domain.com/$releasever/$basearch/ enabled=1 gpgcheck=1 gpgkey=http://epel.mirrors.domain.com/RPM-GPG-KEY-EPEL-$releasever
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