Gitlab：
Gitlab是利用Ruby on Rails 一个开源的版本管理系统，实现一个自托管的git项目仓库，可通过web界面进行访问公开或私有的项目。
Gitlab安装：
安装之前，将虚拟机的内存改成了4个G。内存如果太小，会有502的错误提示信息。
在清华源中下载gitlab-ce最新的版本：
Index of /gitlab-ce/yum/el7/ | 清华大学开源软件镜像站 | Tsinghua Open Source Mirror
gitlab安装和配置：
wget https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el7/gitlab-ce-16.2.6-ce.0.el7.x86_64.rpm
[root@git-server soft]# ll
total 1302648
-rw-r--r-- 1 root root 1333910957 Sep 13 02:04 gitlab-ce-16.2.6-ce.0.el7.x86_64.rpm
[root@git-server soft]#
[root@git-server soft]# rpm -ivh gitlab-ce-16.2.6-ce.0.el7.x86_64.rpm
warning: gitlab-ce-16.2.6-ce.0.el7.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID f27eab47: NOKEY
error: Failed dependencies:
policycoreutils-python is needed by gitlab-ce-16.2.6-ce.0.el7.x86_64
[root@git-server soft]# yum install -y policycoreutils-python
[root@git-server soft]# rpm -ivh gitlab-ce-16.2.6-ce.0.el7.x86_64.rpm
warning: gitlab-ce-16.2.6-ce.0.el7.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID f27eab47: NOKEY
Preparing... ################################# [100%]
Updating / installing...
1:gitlab-ce-16.2.6-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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\____/_/\__/_____/\__,_/_.___/
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
Help us improve the installation experience, let us know how we did with a 1 minute survey:
https://gitlab.fra1.qualtrics.com/jfe/form/SV_6kVqZANThUQ1bZb?installation=omnibus&release=16-2
看上面的英文信息：
请为你的Gitlab instance 配置一个URL，通过设置external_url这一项在gitlab.rb 这个文件中。
然后再执行sudo gitlab-ctl reconfigure命令。
修改配置文件vim /etc/gitlab/gitlab.rc：
external_url 'http://192.168.17.118' # 修改为gitlab服务器的IP地址，对外服务。
初始化：gitlab-ctl reconfigure
时间比较久，需要3分钟左右的时间，会自动配置各个组件，并启动。
然后是查看状态：
gitlab-ctl status
从 /etc/gitlab/initial_root_password文件中得到密码，先登录，然后再更改下密码。
gitlab设置：
配置邮件服务的用途：
1）账号注册的时候，有邮件验证；
2）有合并请求的时候，邮件通知；
3）修改密码的时候，通过邮件修改；
Gitlab创建仓库：
第一步：在gitlab上创建项目（其实也就是存放代码的仓库）。
第二步：自定义项目名称等信息，现在比较新的版本已经没有描述信息了：
页面的信息跟github几乎是相同的。
设置SSH配置：
直接将之前生成的公钥信息拷贝过来。
这样开发者跟gitlab也做成了免密的了。
再看下项目名称：
[root@git-server ~]# git clone git@192.168.17.118:root/myproject.git
Cloning into 'myproject'...
The authenticity of host '192.168.17.118 (192.168.17.118)' can't be established.
ECDSA key fingerprint is SHA256:4dogA08L5gdfaA69BGekE13kzSuIP2vcRp9rsqYnpn0.
ECDSA key fingerprint is MD5:93:34:b9:61:03:cd:00:92:b9:91:3d:b6:6c:7a:84:95.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.17.118' (ECDSA) to the list of known hosts.
remote: Enumerating objects: 3, done.
remote: Counting objects: 100% (3/3), done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 3 (delta 0), reused 0 (delta 0), pack-reused 0
Receiving objects: 100% (3/3), done.
[root@git-server ~]# ll
total 4
-rw-------. 1 root root 1518 Sep 2 02:39 anaconda-ks.cfg
drwxr-xr-x 3 root root 54 Sep 19 12:10 GitTest
drwxr-xr-x 3 root root 35 Sep 20 00:23 myproject
drwxr-xr-x 3 root root 97 Sep 19 21:52 Shell-100-Days
drwxr-xr-x 2 root root 50 Sep 19 23:19 soft
drwxr-xr-x 3 root root 59 Sep 19 20:43 test
git clone将整个myproject项目克隆下来。
然后我们再执行代码上传。
[root@git-server myproject]# echo 111 > 1.py
[root@git-server myproject]# git add *
[root@git-server myproject]# git commit -m "Added 1.py"
[main 7686461] Added 1.py
1 file changed, 1 insertion(+)
create mode 100644 1.py
[root@git-server myproject]# git push -uf origin main
Counting objects: 4, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 273 bytes | 0 bytes/s, done.
Total 3 (delta 0), reused 0 (delta 0)
To git@192.168.17.118:root/myproject.git
e320f08..7686461 main -> main
Branch main set up to track remote branch main from origin.
是main分支，不是github上的master分支。
