封装适用于CentOS7的MySQL离线包

科技网编2023-04-06 13:291970

1 构建一个centos7.6.1810的docker镜像,用于下载MySQL+xtrabackup所需安装包

7.6.1810的docker镜像,低版本最小安装,会尽可能把所需的包拉齐。

Dockerfile文件如下

FROM centos:7.6.1810

CMD yum install -y https://repo.percona.com/yum/percona-release-latest.noarch.rpm https://repo.mysql.com//mysql80-community-release-el7-7.noarch.rpm epel-release && \
rm -rf /yum/mysql8.0 && mkdir -p /yum/mysql8.0 && \
yum --downloadonly --downloaddir=/yum/mysql8.0 install -y mysql-community-server percona-xtrabackup-80 zip unzip telnet lrzsz iotop ftp python-pip && \
yum-config-manager --disable mysql80-community && yum-config-manager --enable mysql57-community && \
rm -rf /yum/mysql5.7 && mkdir -p /yum/mysql5.7 && \
yum --downloadonly --downloaddir=/yum/mysql5.7 install -y mysql-community-server percona-xtrabackup-24 zip unzip telnet lrzsz iotop ftp python-pip

构建镜像:

docker build -t mysql_xtrabackup_download .

2 运行镜像自动下载MySQL5.7 / 8.0 + 对应版本的xtrabackup安装包

docker run --rm \
-v /etc/localtime:/etc/localtime \
-v ${PWD}/yum:/yum \
mysql_xtrabackup_download

docker容器跑完会自动销毁,并在当前目录的yum文件夹下生成mysql5.7 / mysql8.0两个安装包

传输到无网络的centos7上,可以使用yum localinstall *.rpm进行安装

3 解决冲突

下载的rpm可以用于离线安装,但是安装时会报错

新版本的MySQL已经不再提供libmysqlclient.so.18.1.0,但是xtrabackup需要这个文件,所以就有一个Percona-Server-shared-56-5.6.51-rel91.0.1.el7.x86_64.rpm包提供

这个包又提供了一个/etc/my.cnf文件,导致和MySQL主包冲突,无法安装成功,所以要替换掉它。

Transaction check error:
试图安装 mysql-community-server-8.0.31-1.el7.x86_64 和 Percona-Server-shared-56-5.6.51-rel91.0.1.el7.x86_64 会导致文件 /etc/my.cnf 冲突

下载Percona-Server-shared-56-5.6.51-rel91.0.1.el7.x86_64.rpm到Windows,解压,得到两个文件

封装适用于CentOS7的MySQL离线包

创建文件libmysqlclient.spec

Name:     libmysqlclient
Version: 18.1.0
Release: 1
Summary: libmysqlclient-18.1.0
Summary(zh_CN): libmysqlclient-18.1.0
License: GPLv3+ Packager: XX Software %description
libmysqlclient,Resolve MySQL and Xtrabackup installation conflicts %description -l zh_CN
libmysqlclient,解决MySQL和xtrabackup安装冲突 %install
mkdir -p %{buildroot}/usr/lib64
install -m 755 -t %{buildroot}/usr/lib64 /usr/lib64/libmysqlclient.so.18.1.0
install -m 755 -t %{buildroot}/usr/lib64 /usr/lib64/libmysqlclient_r.so.18.1.0 %files
/usr/lib64/libmysqlclient.so.18.1.0
/usr/lib64/libmysqlclient_r.so.18.1.0

创建文件Dockerfile

FROM centos:7.6.1810

RUN sed -e 's|^mirrorlist=|#mirrorlist=|g' \
-e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' \
-i.bak \
/etc/yum.repos.d/CentOS-*.repo && \
yum install -y rpm-build rpmdevtools CMD cd /tmp/libmysqlclient/ && \
mkdir -p /usr/lib64 && \
cp libmysqlclient*.so.18.1.0 /usr/lib64 && \
rpmbuild -bb libmysqlclient.spec --define "_topdir ${PWD}/rpmbuild"

四个文件放同一个目录,然后build + run

docker build -t rpm_libmysqlclient .

docker run --rm \
-v /etc/localtime:/etc/localtime \
-v ${PWD}:/tmp/libmysqlclient/ \
rpm_libmysqlclient

最后会得到rpmbuild/RPMS/x86_64/libmysqlclient-18.1.0-1.x86_64.rpm包

替换掉Percona-Server-shared-56-5.6.51-rel91.0.1.el7.x86_64.rpm,再安装就没问题了。

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