Cài đặt Gitlab tự động bằng bash script

#!/bin/bash
ipaddr='192.168.13.231'
sshport=''

if [[ $sshport == '' ]];then sshport=22;fi

port_random(){
cmd="netstat -plnt | awk '{print \$4}' | cut -d':' -f2 | grep -Eo '[0-9]{1,4}'"
listen_port=$(ssh -p $sshport -o StrictHostKeychecking=no root@$ipaddr "$cmd")
port_random=$(shuf -i 1000-9999 -n 1)
while [[ $(echo $listen_port | grep -c $port_random) == 1 ]]
  do
    port_random=$(shuf -i 8080-9090 -n 1)
  done
}

gitlab_install(){
port_random && gitlab_install="""sudo apt update -y 
# Install GitLab dependencies below:
sudo apt install -y ca-certificates curl openssh-server tzdata
curl -sS https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh | sudo bash

# The repository contents are added to
cat /etc/apt/sources.list.d/gitlab_gitlab-ce.list

# Once the repository has been added, install GitLab CE on Ubuntu 22.04|20.04|18.04 using the apt package manager command
sudo apt update -y 
sudo apt install gitlab-ce -y 

# Edit the GitLab configuration file to set hostname and other parameters
sudo sed -i 's|external_url .*|external_url '\'http://$ipaddr:$port_random\''|' /etc/gitlab/gitlab.rb

sudo sed -i 's|listen.*|listen *:$port_random|' /var/opt/gitlab/nginx/conf/gitlab-http.conf # gitlab-ctl restart
# When done, start your GitLab instance by running the following command
sudo gitlab-ctl reconfigure
sudo gitlab-ctl status

# A password for root user is randomly generated and stored for 24 hours
cat /etc/gitlab/initial_root_password"""

if [[ $(ssh -p $sshport -o StrictHostKeychecking=no root@$ipaddr "grep -w gitlab /opt/gitlab/version-manifest.txt") == '' ]]
  then
    ssh -p $sshport -o StrictHostKeychecking=no root@$ipaddr "$gitlab_install"
    root_passwd=$(ssh -p $sshport -o StrictHostKeychecking=no root@$ipaddr "cat /etc/gitlab/initial_root_password")
    echo -e "Domain: http://$ipaddr:$port_random"
else
    echo 'Gitlab already exist.'
fi
}
gitlab_install

# 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: G7oyXQhS2Ey1HzpdcjUMDaT2lvBSR0FgMIIOXr5/3jg=

# NOTE: This file will be automatically deleted in the first reconfigure run after 24 hours.
Domain: http://192.168.13.231:9540