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如何从 Mysql repos 在 RHEL8 上安装 Mysql 5.6？

tag-icon • tag-icon mysql dnf rhel8
如何从 Mysql repos 在 RHEL8 上安装 Mysql 5.6？

我是 dnf 新手，因此对于某些人来说这可能很明显。

我确实检查了 versionlock 并检查了 /etc/yum.repos.d 文件中是否存在排除行。但是，当我启用了任何其他存储库时，我找不到要安装的 mysql 服务器。我可以尝试在禁用所有其他存储库的情况下安装它，但这样就找不到所有依赖项。

[root@ip-10-9-10-242 yum.repos.d]# dnf clean all
42 files removed
[root@ip-10-9-10-242 yum.repos.d]# dnf --disablerepo "*"  --enablerepo "mysql56-community" list available
Last metadata expiration check: 0:07:40 ago on Tue 30 Jul 2019 12:38:45 UTC.
Available Packages
mysql-community-bench.x86_64                                                                                        5.6.45-2.el7                                                                          mysql56-community
...
mysql-community-server.x86_64                                                                                       5.6.45-2.el7                                                                          mysql56-community
mysql-community-test.x86_64                                                                                         5.6.45-2.el7                                                                          mysql56-community
[root@ip-10-9-10-242 yum.repos.d]# dnf --enablerepo "mysql56-community" search mysql-community-server.x86_64
Last metadata expiration check: 0:07:59 ago on Tue 30 Jul 2019 12:38:48 UTC.
No matches found.
[root@ip-10-9-10-242 yum.repos.d]# dnf search mysql-community
Last metadata expiration check: 0:10:57 ago on Tue 30 Jul 2019 12:38:48 UTC.
============================================================================================== Name Matched: mysql-community ==============================================================================================
mysql-community-bench.x86_64 : MySQL benchmark suite
mysql-community-release.noarch : MySQL repository configuration for yum
mysql-community-release.noarch : MySQL repository configuration for yum
mysql-community-embedded.i686 : MySQL embedded library
mysql-community-embedded.x86_64 : MySQL embedded library
mysql-community-embedded-devel.i686 : Development header files and libraries for MySQL as an embeddable library
mysql-community-embedded-devel.x86_64 : Development header files and libraries for MySQL as an embeddable library

因此，您可以看到在 mysql56 repo 中找到了一些东西（例如 bench），但没有找到服务器。我以前也做过：

yum-config-manager --disable mysql80-community
yum-config-manager --enable mysql56-community

并且可以看到：

[root@ip-10-9-10-242 yum.repos.d]# dnf repolist
Last metadata expiration check: 0:00:04 ago on Tue 30 Jul 2019 13:03:47 UTC.
repo id                         repo name                                status
mysql-connectors-community      MySQL Connectors Community                 118
mysql-tools-community           MySQL Tools Community                       95
mysql56-community               MySQL 5.6 Community Server                 169
rhui-client-config-server-8     Red Hat Update Infrastructure 3 Client C     3
rhui-rhel-8-appstream-rhui-rpms Red Hat Enterprise Linux 8 for x86_64 -  5,472
rhui-rhel-8-baseos-rhui-rpms    Red Hat Enterprise Linux 8 for x86_64 -  2,029

对于仍然感到困惑的人来说，如果找不到，就无法安装。

[root@ip-10-9-10-242 ~]# dnf install mysql-community-server
Last metadata expiration check: 0:00:12 ago on Thu 01 Aug 2019 09:14:02 UTC.
No match for argument: mysql-community-server
Error: Unable to find a match

好的，所以执行一点“-v”操作，它显示包已被排除。但我可以禁用所有排除，它仍然显示它们已被排除。

[root@ip-10-9-10-242 dnf]# dnf repoquery --repo mysql56-community --available mysql-community-server-0:5.6.45-2.el7.x86_64
Last metadata expiration check: 0:13:17 ago on Thu 01 Aug 2019 17:12:25 UTC.
mysql-community-server-0:5.6.45-2.el7.x86_64


[root@ip-10-9-10-242 dnf]# dnf --enablerepo=mysql56-community  --disableexcludepkgs all --disableexcludes all  install mysql-community-bench
Last metadata expiration check: 0:14:46 ago on Thu 01 Aug 2019 17:13:30 UTC.
Error: 
 Problem: package mysql-community-bench-5.6.45-2.el7.x86_64 requires mysql-community-server(x86-64) >= 5.6.10, but none of the providers can be installed
  - cannot install the best candidate for the job
  - package mysql-community-server-5.6.15-4.el7.x86_64 is excluded
  - package mysql-community-server-5.6.16-1.el7.x86_64 is excluded
.....
  - package mysql-community-server-5.6.44-2.el7.x86_64 is excluded
  - package mysql-community-server-5.6.45-2.el7.x86_64 is excluded


  [root@ip-10-9-10-242 dnf]# dnf --disablerepo "*" --enablerepo=mysql56-community  --disableexcludepkgs all --disableexcludes all  install mysql-community-bench
  Last metadata expiration check: 0:18:12 ago on Thu 01 Aug 2019 17:12:25 UTC.
  Error: 
   Problem: cannot install the best candidate for the job
    - nothing provides /usr/bin/perl needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(Getopt::Long) needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(Data::Dumper) needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(POSIX) needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(Cwd) needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(DBI) needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(Benchmark) needed by mysql-community-bench-5.6.45-2.el7.x86_64
    - nothing provides perl(sigtrap) needed by mysql-community-bench-5.6.45-2.el7.x86_64
  (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

答案1

对于那些来这里寻找解决方案的人，以下是在 RHEL8 上安装 MySQL 社区包的方法：https://dev.mysql.com/doc/mysql-repo-excerpt/5.6/en/linux-installation-yum-repo.html。官方页面。罪魁祸首是默认的 mysql 模块。禁用它，dnf 就会找到社区包，没有问题。

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