CentOS-7.x Yum Repo Mirror

一. 环境

1.1 主机信息

1.2 挂载磁盘

# 通过fdisk创建linux或linux lvm分区；
# 格式化分区为ext4或xfs格式
mkfs.ext4 /dev/sdb1

# mount
mkdir -p /repo
echo "/dev/sdb1 /repo                    ext4    defaults        1 2" >> /etc/fstab
mount -a

二. 镜像Yum源

# 使用rsync同步yum源，上游yum源需要支持rsync协议
yum install rsync -y

# 同步清华大学开源软件镜像站，实测阿里云镜像站不支持rsync协议
# centos
mkdir -p /repo/centos/7.6.1810/os/x86_64/
rsync -av rsync://mirrors.tuna.tsinghua.edu.cn/centos/7.6.1810/os/x86_64/ /repo/centos/7.6.1810/os/x86_64/
rsync -av rsync://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7 /repo/centos/RPM-GPG-KEY-CentOS-7
# 重要！建立/repo/centos/7.6.1810/目录的软链接
ln -s /repo/centos/7.6.1810/ /repo/centos/7

# epel
mkdir -p /repo/epel/7/x86_64/
rsync -av rsync://mirrors.tuna.tsinghua.edu.cn/epel/7/x86_64/ /repo/epel/7/x86_64/
rsync -av rsync://mirrors.tuna.tsinghua.edu.cn/epel/RPM-GPG-KEY-EPEL-7 /repo/epel/RPM-GPG-KEY-EPEL-7

三. Web服务器

# 安装nginx
yum install nginx -y

# 编辑
vim /etc/nginx/nginx.conf
    server {
        client_max_body_size 4G;
        listen       80 default_server;
        server_name  100.64.140.101;
        root         /mirror;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
            autoindex on;
            autoindex_exact_size on;
            autoindex_localtime on;
        }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }
    
# 测试
nginx -t

# 启动
systemctl enable nginx
systemctl restart nginx

四. 客户端repo文件

4.1 CentOS-Base.repo

# 备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

# 生成repo
cat << EOF >> /etc/yum.repos.d/CentOS-Base.repo
# CentOS-Base.repo
[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://100.64.140.101/centos/$releasever/os/$basearch/
        http://100.64.140.101/centos/$releasever/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://100.64.140.101/centos/RPM-GPG-KEY-CentOS-7
EOF

4.2 epel.repo

# centos默认没有epel.repo
cat << EOF >> /etc/yum.repos.d/epel.repo
[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://100.64.140.101/epel/7/$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=http://100.64.140.101/epel/RPM-GPG-KEY-EPEL-7
EOF

五. (option范例)初始化repodata索引

# 如果通过rsync从公网同步镜像，repodata也会同步，可直接使用；
# 如果不是从公网同步的镜像库，没有repodata索引文件，可通过createrepo生成
# 安装createrepo
yum install createrepo -y 

# 在镜像源目录生成repodata索引文件
createrepo -pdo /repo/centos/7.6.1810/os/x86_64/
createrepo -pdo /repo/epel/7/x86_64/

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