sudo yum install postgresql 在 CentOS 7 上不起作用？

Question

我正在尝试在 CentOS 7 上安装 PostgreSQL（按照本指南安装 Discourse），但是当我发出以下命令时：

sudo yum install postgresql91-server.x86_64 postgresql91-contrib.x86_64 postgresql91-devel.x86_64

我收到此错误：

Loaded plugins: fastestmirror base                                     | 3.6 kB  00:00:00 epel/x86_64/metalink                                |  24 kB  00:00:00 extras                                              | 3.4 kB  00:00:00 nginx                                               | 2.9 kB  00:00:00 http://yum.postgresql.org/9.1/redhat/rhel-7-x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found Trying other mirror. To address this issue please refer to the below knowledge base article

https://access.redhat.com/articles/1320623

If above article doesn't help to resolve this issue please create a bug on https://bugs.centos.org/



 One of the configured repositories failed (PostgreSQL 9.1 7 - x86_64),  and yum doesn't have enough cached data to continue. At this point the only  safe thing yum can do is fail. There are a few ways to work "fix" this:

     1. Contact the upstream for the repository and get them to fix the problem.

     2. Reconfigure the baseurl/etc. for the repository, to point to a working
        upstream. This is most often useful if you are using a newer
        distribution release than is supported by the repository (and the
        packages for the previous distribution release still work).

     3. Disable the repository, so yum won't use it by default. Yum will then
        just ignore the repository until you permanently enable it again or use
        --enablerepo for temporary usage:

            yum-config-manager --disable pgdg91

     4. Configure the failing repository to be skipped, if it is unavailable.
        Note that yum will try to contact the repo. when it runs most commands,
        so will have to try and fail each time (and thus. yum will be be much
        slower). If it is a very temporary problem though, this is often a nice
        compromise:

            yum-config-manager --save --setopt=pgdg91.skip_if_unavailable=true

failure: repodata/repomd.xml from pgdg91: [Errno 256] No more mirrors to try. http://yum.postgresql.org/9.1/redhat/rhel-7-x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found

关于如何解决这个问题有任何提示吗？

Answer 1

首先，从PostgreSQL Repository Packages页面中，找到您要安装的 PostgreSQL 版本并复制链接。

然后，使用您复制的链接运行此命令：

#sudo yum install https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-7-x86_64/pgdg-centos95-9.5-2.noarch.rpm

在那之后：

#sudo yum install -y postgresql95-server.x86_64 postgresql95-contrib.x86_64 postgresql95-libs.x86_64
#/usr/pgsql-9.5/bin/postgresql95-setup initdb
#sudo systemctl start postgresql-9.5.service

另外，如果你想在启动时启动 PostgreSQL：

#sudo systemctl enable postgresql-9.5.service