gitlab 安装、配置、清空、卸载、重装

20200702 自行搭建 git 服务器后，如何管理总是一个麻烦事，所以，还是要安装一个 gitlab

按照 gitlab 官网安装 ce 版，其实应该是很简单的事情，步骤也很少。

正常情况下，安装、配置、运行，再学习 gitlab 使用

没有想到我折腾了一大圈！来回卸载、重装、重新配置！几乎所有该出现的问题，全都遇见了一轮！

我的环境： virtualBox 虚拟机 ubuntu Server 1804

gitlab 官网 https://about.gitlab.com/install/#ubuntu

gitlab ce 版本安装步骤 https://about.gitlab.com/install/#ubuntu?version=ce

清华大学开源软件镜像站 https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/

Gitlab Community Edition 镜像使用帮助 https://mirror.tuna.tsinghua.edu.cn/help/gitlab-ce/

1、安装

安装必要的依赖 sudo apt-get install -y curl openssh-server ca-certificates
非必须（如果开始学习或者后续需要使用邮箱开放注册的话，请安装） sudo apt-get install -y postfix
设置安装包和 gitlab 软件源 curl -sS https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh | sudo bash

按照前面镜像使用帮助，设置清华 gitlab ce 软件源上一步 bash 完成之后。会增加一个 gitlab ce 的软件源，如下：

 $ cd /etc/apt/sources.list.d
 $ ls
 gitlab_gitlab-ce.list

$ vim gitlab_gitlab-ce.list 替换一下

 # this file was generated by packages.gitlab.com for
 # the repository at https://packages.gitlab.com/gitlab/gitlab-ce

 # by wzh 20200702
 # deb https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu/ bionic main
 # deb-src https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu/ bionic main
 # TsingHua 
 deb https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/ubuntu bionic main
 deb-src https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/ubuntu bionic main

开始安装 gitlab-ce

gitlab 使用 ruby 的 rails 框架开发，已经自带了 web 服务器所以不需要提前准备一个域名网站，直接使用 ip + 端口方式即可后续在配置 nginx 映射到这个 ip 和端口即可

$ sudo EXTERNAL_URL="http://127.0.0.1:8090" apt-get install gitlab-ce

Reading package lists... Done Building dependency tree
Reading state information... Done The following packages will be upgraded: gitlab-ce 1 upgraded, 0 newly installed, 0 to remove and 121 not upgraded. Need to get 740 MB of archives. After this operation, 139 kB disk space will be freed. Get:1 https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/ubuntu bionic/main amd64 gitlab-ce amd64 13.1.2-ce.0 [740 MB] ...

安装过程比较漫长，即使换成了清华的源，也很慢！
配置生效并开始运行 sudo gitlab-ctl reconfigure && sudo gitlab-ctl start

这个过程也比较慢！这个 gitlab 确实比较庞大，涵盖的东西很多！ gitlab-ctl start 也需要 root 权限，否则，会出现一大堆 warning
测试、验证 sudo ufw enable 8090

sudo ufw status

或者干脆 sudo ufw disable

$ curl 127.0.0.1:8090 应该看到的是
```
 <html><body>You are being <a href="http://127.0.0.1:8090/users/sign_in">redirected</a>.</body></html
```
浏览器测试一下 http://192.168.1.194:8090

会自动重定向到以下 url

http://192.168.1.194:8090/users/password/edit?reset_password_token=oN-Fu-KZgSPS-9qd7rzV

如果顺利的到达这里，gitlab ce 就算 ok！剩下就是学习使用了！

查看配置信息 $ sudo gitlab-ctl show-config 内容确实很多很多！

	Starting Chef Client, version 14.14.29
resolving cookbooks for run list: ["gitlab::show_config"]
Synchronizing Cookbooks:
  - package (0.1.0)
  - redis (0.1.0)
  - postgresql (0.1.0)
  - monitoring (0.1.0)
  - registry (0.1.0)
  - mattermost (0.1.0)
  - consul (0.1.0)
  - gitaly (0.1.0)
  - praefect (0.1.0)
  - letsencrypt (0.1.0)
  - nginx (0.1.0)
  - runit (5.1.3)
  - acme (4.1.1)
  - crond (0.1.0)
  - gitlab (0.0.1)
Installing Cookbook Gems:
Compiling Cookbooks...
......

查看版本号

$ cat /opt/gitlab/embedded/service/gitlab-rails/VERSION

13.1.2

以下内容可以不必观看 以下过程希望不再经历！

2、常用命令

安装的时候都已经设置好了！不折腾的话，这些命令基本上用不上！

以下命令都需要 sudo

查询 gitlab 服务 systemctl list-unit-files --type=service | grep gitlab

gitlab-runsvdir.service enabled

查询 gitlab 服务状态 systemctl status gitlab-runsvdir.service
设置开机启动 systemctl enable gitlab-runsvdir.service
禁止开机自启动 systemctl disable gitlab-runsvdir.service
启动/重启/停止 gilab 服务 gitlab-ctl start gitlab-ctl restart gitlab-ctl stop
修改配置后，重新配置生效 gitlab-ctl reconfigure 一般连着使用 sudo gitlab-ctl reconfigure && sudo gitlab-ctl start
查看 gitlab 配置 gitlab-ctl show-config
卸载 gitlab gitlab-ctl uninstall
清空 gitlab 配置，推倒重来 gitlab-ctl cleanse
查看 gitlab 日志 gitlab-ctl tail

3、异常情况

关机或者 reboot 之后，再次测试 $ curl 127.0.0.1:8090 看到的不是以上一条语句了，而是一大段

 ......
   <script>
     (function () {
       var goBack = document.querySelector('.js-go-back');

       if (history.length > 1) {
         goBack.style.display = 'inline';
       }
     })();
   </script>
 </body>
 </html>

浏览器打开 http://192.168.1.194:8090 ，立刻出现 502 ！可恶之极！

502
Whoops, GitLab is taking too much time to respond.

后续来回折腾之后，发现自己掉坑底！以上错误并非 gitlab 安装的不对，也不是 gitlab 出错了！ 每次 reboot 之后， gitlab 服务启动需要花好长时间的！ 本人反应比较快，直接就开始检查配置、服务状态...各种折腾！

4、卸载、重装

查询 gitlab 安装包 $ dpkg --list |grep gitlab

 ii  gitlab-ce                              13.0.1-ce.0                                     amd64        GitLab Community Edition (including NGINX, Postgres, Redis)
 rc  gitlab-ee                              13.0.1-ee.0                                     amd64        GitLab Enterprise Edition (including NGINX, Postgres, Redis)

$ ps -ef | grep gitlab
卸载 gitlab

sudo apt-get --purge remove gitlab-ce

	Reading package lists... Done
	Building dependency tree       
	Reading state information... Done
	The following packages will be REMOVED:
	  gitlab-ce*
	0 upgraded, 0 newly installed, 1 to remove and 121 not upgraded.
	After this operation, 1,947 MB disk space will be freed.
	Do you want to continue? [Y/n] y
	(Reading database ... 185411 files and directories currently installed.)
	Removing gitlab-ce (13.1.1-ce.0) ...
	(Reading database ... 113921 files and directories currently installed.)
	Purging configuration files for gitlab-ce (13.1.1-ce.0) ...
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/sv' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/service' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/init' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/etc' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/embedded/ssl/certs' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/embedded/service/gitlab-shell' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/embedded/service/gitlab-rails/public' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/embedded/service/gitlab-rails/config' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/embedded/cookbooks' not empty so not removed
	dpkg: warning: while removing gitlab-ce, directory '/opt/gitlab/embedded/bin' not empty so not removed

删除所有包含gitlab文件 sudo find / -name gitlab | xargs rm -rf sudo find / -name gitlab | xargs sudo rm -rf
确认一下 $ ps -ef | grep gitlab $ dpkg --list |grep gitlab
重新安装，步骤忽略
lock-frontend 错误
```
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
```
由于安装总是很慢，忍不住给他中断了几次！然后，重新来过的时候，就看到了这个 lock-frontend ！

$ sudo cat /var/lib/dpkg/lock-frontend 内容是空的

$ sudo rm /var/lib/dpkg/lock-frontend 直接删除后 , $ sudo apt update , 再来！

5、清空后再来

还没有学会 gitlab 操作的时候，总是会将配置和注册用户搞得乱七八糟，这个时候就希望能重新 init ！

Delete all gitlab data, and start from scratch.

清空 gitlab 配置，推倒重来 $ sudo gitlab-ctl cleanse

     *******************************************************************
     * * * * * * * * * * *       STOP AND READ       * * * * * * * * * *
     *******************************************************************
     This command will delete *all* local configuration, log, and
     variable data associated with gitlab.

     You have 60 seconds to hit CTRL-C before configuration,
     logs, and local data for this application are permanently
     deleted.
     *******************************************************************

 ......

 Your config files have been backed up to /root/gitlab-cleanse-2020-07-02T10:41.

重新运行、测试 sudo gitlab-ctl reconfigure && sudo gitlab-ctl start

$ curl 127.0.0.1:8090
```
 curl: (7) Failed to connect to 127.0.0.1 port 8090: Connection refused
```
直接就 refused ！会不会是配置 127.0.0.1:8090 也 clean 了？

$ cd /etc/gitlab/ $ ls
```
 gitlab-secrets.json  trusted-certs
```
真的没有了啊！缺少了那个 gitlab.rb 配置文件！

以前是这样子的
```
 gitlab.rb  gitlab-secrets.json  trusted-certs
```
所以，只好重新安装

sudo EXTERNAL_URL="http://127.0.0.1:8090" apt-get install gitlab-ce

写这个博客的时候，注意到：cleanse 的最后一句提示

Your config files have been backed up to /root/gitlab-cleanse-2020-07-02T10:41.

但是，有些 ubuntu 1804 在安装的时候，根本就没有设置过 root 密码，root 密码本身是随机生成的！

$ su
Password: 
su: Authentication failure

所以，真的需要去找回那个备份的话，首先要去找回 root 密码！

好在我这个 ubuntu 1804 版本比较早，当时是有设置过 root 密码的可以用来证明：确实将之前的 3 个文件都 backup 过去了！

$ su
Password: 

# whoami
root

# cd /root
# ls
	gitlab-cleanse-2020-07-02T10:41
	
# cd gitlab-cleanse-2020-07-02T10\:41/

# ls
	gitlab.rb  gitlab-secrets.json  trusted-certs