我不是系统工程师（我更像是软件开发人员）。我尝试在 CentOS 7 系统上安装 Zabbix 代理，发现 yum 存在以下问题（我在其他机器上执行了同样的过程，并成功了）。
首先我执行这个命令来安装该包：
[root@NCMRDB1_COL ~]# rpm -Uvh https://repo.zabbix.com/zabbix/6.4/rhel/7/x86_64/ zabbix-release-6.4-1.el7.noarch.rpm
Retrieving https://repo.zabbix.com/zabbix/6.4/rhel/7/x86_64/zabbix-release-6.4-1 .el7.noarch.rpm
Preparing... ################################# [100%]
Updating / installing...
1:zabbix-release-6.4-1.el7 ################################# [ 50%]
Cleaning up / removing...
2:zabbix-release-5.0-1.el7 ################################# [100%]
然后我执行了这个命令：
[root@NCMRDB1_COL ~]# yum clean all
Loaded plugins: fastestmirror, langpacks
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Cleaning repos: MongoDB base extras updates zabbix zabbix-non-supported
Cleaning up list of fastest mirrors
我认为它只是从 yum 缓存中删除一些东西，但是我看到有一些对 Zabbix 的引用，所以我不知道这里是否存在问题......我想这可能是我下一步遇到的问题的原因。
最后我执行这个命令：
[root@NCMRDB1_COL ~]# yum install zabbix-agent2 zabbix-agent2-plugin-*
Loaded plugins: fastestmirror, langpacks
Determining fastest mirrors
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_6 4&repo=os&infra=stock error was
12: Timeout on http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra =stock: (28, 'Resolving timed out after 30540 milliseconds')
One of the configured repositories failed (Unknown),
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. Run the command with the repository temporarily disabled
yum --disablerepo=<repoid> ...
4. Disable the repository permanently, 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 <repoid>
or
subscription-manager repos --disable=<repoid>
5. 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=<repoid>.skip_if_unavailable=true
Cannot find a valid baseurl for repo: base/7/x86_64
获取您可以看到的错误。这到底是什么意思？我该怎么做才能修复它并正确安装我的 zabbix 代理，就像我之前在其他机器上成功完成的那样？我猜问题出在第 2 步。
谢谢