gitlab安装报错

安装gitlab时，使用rpm安装，提示错误：

[root@www.wulaoer.org ~]# rpm -ivh gitlab-ce-12.0.0-ce.0.el7.x86_64.rpm 
警告：gitlab-ce-12.0.0-ce.0.el7.x86_64.rpm: 头V4 RSA/SHA1 Signature, 密钥 ID f27eab47: NOKEY
错误：依赖检测失败：
        policycoreutils-python 被 gitlab-ce-12.0.0-ce.0.el7.x86_64 需要

这个错误提示，是因为gitlab安装时需要依赖policycoreutils-python。所以需要先安装policycoreutils-python，在安装gitlab-ce-12.0.0-ce.0.el7.x86_64

[root@www.wulaoer.org ~]# yum install policycoreutils-python -y

安装成功之后，在继续安装gitlab

[root@www.wulaoer.org ~]# rpm -ivh gitlab-ce-12.0.0-ce.0.el7.x86_64.rpm 
警告：gitlab-ce-12.0.0-ce.0.el7.x86_64.rpm: 头V4 RSA/SHA1 Signature, 密钥 ID f27eab47: NOKEY
准备中...                          ################################# [100%]
正在升级/安装...
   1:gitlab-ce-12.0.0-ce.0.el7        ################################# [100%]
It looks like GitLab has not been configured yet; skipping the upgrade script.

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  ,,,,,,,,,,,*********,,,,,,,,,,,
  .,,,,,,,,,,,*******,,,,,,,,,,,,
      ,,,,,,,,,*****,,,,,,,,,.
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     _______ __  __          __
    / ____(_) /_/ /   ____ _/ /_
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  / /_/ / / /_/ /___/ /_/ / /_/ /
  \____/_/\__/_____/\__,_/_.___/
  

Thank you for installing GitLab!
GitLab was unable to detect a valid hostname for your instance.
Please configure a URL for your GitLab instance by setting `external_url`
configuration in /etc/gitlab/gitlab.rb file.
Then, you can start your GitLab instance by running the following command:
  sudo gitlab-ctl reconfigure

For a comprehensive list of configuration options please see the Omnibus GitLab readme
https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md

gitlab才算安装成功，gitlab的问题先说到这了。如果以后有其他的问题在另外说明。