# On CentOS 7 (and RedHat/Oracle/Scientific Linux 7), the commands below will also open HTTP, HTTPS and SSH access in the system firewall. This is an optional step, and you can skip it if you intend to access GitLab only from your local network.
sudo yum install -y policycoreutils-python openssh-server perl

# Enable OpenSSH server daemon if not enabled: sudo systemctl status sshd
sudo systemctl enable sshd
sudo systemctl start sshd

# Check if opening the firewall is needed with: sudo systemctl status firewalld
sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --permanent --add-service=https
sudo systemctl reload firewalld

# Next, install Postfix to send notification emails. If you want to use another solution to send emails please skip this step and configure an external SMTP server after GitLab has been installed.
sudo yum install postfix
sudo systemctl enable postfix
sudo

# Centos/Red Hat7.x 安装方式
[root@localhost ~]# rpm -ivh gitlab-ce-14.2.3-ce.0.el7.x86_64.rpm 

# Centos/Red Hat8.x 安装方式
[root@localhost ~]# rpm -ivh gitlab-ce-14.2.3-ce.0.el8.x86_64.rpm

[root@localhost ~]# rpm -ivh gitlab-ce-14.2.3-ce.0.el7.x86_64.rpm 
警告：gitlab-ce-14.2.3-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-14.2.3-ce.0.el7        ################################# [100%]
It looks like GitLab has not been configured yet; skipping the upgrade script.

       *.                  *.
      ***                 ***
     *****               *****
    .******             *******
    ********            ********
   ,,,,,,,,,***********,,,,,,,,,
  ,,,,,,,,,,,*********,,,,,,,,,,,
  .,,,,,,,,,,,*******,,,,,,,,,,,,
      ,,,,,,,,,*****,,,,,,,,,.
         ,,,,,,,****,,,,,,
            .,,,***,,,,
                ,*,.
  


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

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=14-2

[root@localhost ~]#

[root@localhost ~]# vim /etc/gitlab/gitlab.rb
将 #external_url 'http://gitlab.example.com'调整为http://+ip:端口的格式
external_url 'http://192.168.159.102:8000'

[root@localhost ~]# sudo gitlab-ctl reconfigure

sudo

#开放端口（开放后需要要重启防火墙才生效）
firewall-cmd --zone=public --add-port=8000/tcp --permanent

# 重新启动防火墙

# 格式：IP+端口号(默认8080)

Notes:
Default admin account has been configured with following details:
Username: root
Password: You didn't opt-in to print initial root password to STDOUT.
Password stored to /etc/gitlab/initial_root_password. This file will be cleaned up in first reconfigure run after 24 hours.

NOTE: Because these credentials might be present in your log files in plain text, it is highly recommended to reset the password following https://docs.gitlab.com/ee/security/reset_user_password.html#reset-your-root-password.

gitlab Reconfigured!

Username: root
Password: You didn't opt-in to print initial root password to STDOUT.
Password stored to /etc/gitlab/initial_root_password. This file will be cleaned up in first reconfigure run after 24

[root@localhost ~]# cat /etc/gitlab/initial_root_password

# WARNING: This value is valid only in the following conditions
#          1. If provided manually (either via `GITLAB_ROOT_PASSWORD` environment variable or via `gitlab_rails['initial_root_password']` setting in `gitlab.rb`, it was provided before database was seeded for the first time (usually, the first reconfigure run).
#          2. Password hasn't been changed manually, either via UI or via command line.
#
#          If the password shown here doesn't work, you must reset the admin password following https://docs.gitlab.com/ee/security/reset_user_password.html#reset-your-root-password.

Password: oQIWkCNmUtrOeYebj8vVJ53CocII+ZlpWhzssaLUH5c=

# NOTE: This file will be automatically deleted in the first reconfigure run after 24 hours.
[root@localhost ~]#