Step-by-Step Guide to Installing, Configuring, and Managing GitLab CE on CentOS

GitLab introduction

Private code repository, alternatives like Gogs

Fine-grained permission configuration

Control user/group permissions to prevent direct master pushes

GitLab architecture

Deploy GitLab CE

# Use Tsinghua mirror to install
[root@gitlab ~]# yum install -y https://mirrors.tuna.tsinghua.edu.cn/gitlabce/yum/el7/gitlab-ce-12.3.5-ce.0.el7.x86_64.rpm

# Local install
[root@gitlab ~]# yum localinstall -y gitlab-ce-10.2.2-ce.0.el7.x86_64.rpm

# Configuration steps (edit /etc/gitlab/gitlab.rb)
# Set external_url, email settings, and disable unwanted Prometheus exporters
# Example:
external_url 'http://gitlab.wc.com'
gitlab_rails['gitlab_email_enabled'] = true
gitlab_rails['gitlab_email_from'] = '[email protected]'
gitlab_rails['gitlab_email_display_name'] = 'wc gitlab notice'
gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "smtp.qq.com"
gitlab_rails['smtp_port'] = 465
gitlab_rails['smtp_user_name'] = "[email protected]"
gitlab_rails['smtp_password'] = "dizyzzjjujhxdefe"
gitlab_rails['smtp_domain'] = "qq.com"
gitlab_rails['smtp_authentication'] = "login"
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['smtp_tls'] = true
# Reconfigure GitLab
[root@gitlab ~]# gitlab-ctl reconfigure

GitLab service operations

# View service status
[root@gitlab git]# gitlab-ctl status

# Stop all services
[root@gitlab git]# gitlab-ctl stop

# Start all services
[root@gitlab git]# gitlab-ctl start

# Restart all services
[root@gitlab git]# gitlab-ctl restart

# Stop a specific service (e.g., nginx)
[root@gitlab git]# gitlab-ctl stop nginx

# Start a specific service
[root@gitlab git]# gitlab-ctl start nginx

# Tail all component logs
[root@gitlab git]# gitlab-ctl tail

# Tail logs of a specific component (e.g., nginx)
[root@gitlab git]# gitlab-ctl tail nginx

# Open Rails console
[root@gitlab git]# gitlab-rails console

# Test email delivery
irb(main):012:0> Notify.test_email('[email protected]','sbsbsb','hei/hei/hei').deliver_now

# Reset root password via Rails console
irb(main):011:0> user = User.where(id: 1).first
irb(main):012:0> user.password = '123456789'
irb(main):012:0> user.password_confirmation = '123456789'
irb(main):012:0> user.save

GitLab Chinese localization

# 1. Download localization package
[root@gitlab ~]# wget https://gitlab.com/xhang/gitlab/-/archive/10-2-stable-zh/gitlab10-2-stable-zh.tar.gz

# 2. Extract package
[root@gitlab ~]# tar xf gitlab-10-2-stable-zh.tar.gz

# 3. Stop all services
[root@gitlab ~]# gitlab-ctl stop

# 4. Overwrite files
[root@gitlab ~]# cp -a gitlab-10-2-stable-zh/* /opt/gitlab/embedded/service/gitlabrails/

# 5. Reconfigure
[root@gitlab ~]# gitlab-ctl reconfigure

# 6. Start services
[root@gitlab ~]# gitlab-ctl start

Create projects (HTTP)

# Global Git config
git config --global user.name "Administrator"
git config --global user.email "[email protected]"

# Clone a new repository
git clone http://gitlab.zls.com/root/linux2.git
cd linux2
touch README.md
git add README.md
git commit -m "add README"
git push -u origin master

# Existing folder
cd existing_folder
git init
git remote add origin http://gitlab.zls.com/root/linux2.git
git add .
git commit -m "Initial commit"
git push -u origin master

# Existing Git repo
cd existing_repo
git remote rename origin old-origin
git remote add origin http://gitlab.zls.com/root/linux2.git
git push -u origin --all
git push -u origin --tags

Create projects (SSH)

# Global Git config
git config --global user.name "Administrator"
git config --global user.email "[email protected]"

# Clone via SSH
git clone [email protected]:root/linux2.git
cd linux2
touch README.md
git add README.md
git commit -m "add README"
git push -u origin master

# Existing folder
cd existing_folder
git init
git remote add origin [email protected]:root/linux2.git
git add .
git commit -m "Initial commit"
git push -u origin master

# Existing Git repo
cd existing_repo
git remote rename origin old-origin
git remote add origin [email protected]:root/linux2.git
git push -u origin --all
git push -u origin --tags

Add remote repository

# Add remote
[root@gitlab web]# git remote add zls [email protected]:root/linux2.git

# Add hosts entry
[root@gitlab web]# vim /etc/hosts
10.0.0.91 gitlab.zls.com

# Generate SSH key
[root@gitlab git]# ssh-keygen

# View public key
[root@gitlab git]# cat ~/.ssh/id_rsa.pub

# Add SSH key in GitLab web UI

Clone repository

# Clone via SSH
[root@gitlab opt]# git clone [email protected]:ops/new_linux2.git

# Pull latest changes
[root@gitlab new_linux2]# git pull

# Fetch all branches
[root@gitlab new_linux2]# git fetch -vp

GitLab user and group management (screenshots omitted for brevity)