Install Gitlab in own server (Ubuntu 16.04)

1.

$ sudo apt-get update

$ sudo apt-get install ca-certificates curl openssh-server postfix

2.

$ cd /tmp

$ curl -LO https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh

or (copy and run this code[script.deb.sh])

#!script.deb.sh

unknown_os ()
{
  echo "Unfortunately, your operating system distribution and version are not supported by this script."
  echo
  echo "You can override the OS detection by setting os= and dist= prior to running this script."
  echo "You can find a list of supported OSes and distributions on our website: https://packages.gitlab.com/docs#os_distro_version"
  echo
  echo "For example, to force Ubuntu Trusty: os=ubuntu dist=trusty ./script.sh"
  echo
  echo "Please email support@packagecloud.io and let us know if you run into any issues."
  exit 1
}

curl_check ()
{
  echo "Checking for curl..."
  if command -v curl > /dev/null; then
    echo "Detected curl..."
  else
    echo "Installing curl..."
    apt-get install -q -y curl
  fi
}

install_debian_keyring ()
{
  if [ "${os}" = "debian" ]; then
    echo "Installing debian-archive-keyring which is needed for installing "
    echo "apt-transport-https on many Debian systems."
    apt-get install -y debian-archive-keyring &> /dev/null
  fi
}


detect_os ()
{
  if [[ ( -z "${os}" ) && ( -z "${dist}" ) ]]; then
    # some systems dont have lsb-release yet have the lsb_release binary and
    # vice-versa
    if [ -e /etc/lsb-release ]; then
      . /etc/lsb-release

      if [ "${ID}" = "raspbian" ]; then
        os=${ID}
        dist=`cut --delimiter='.' -f1 /etc/debian_version`
      else
        os=${DISTRIB_ID}
        dist=${DISTRIB_CODENAME}

        if [ -z "$dist" ]; then
          dist=${DISTRIB_RELEASE}
        fi
      fi

    elif [ `which lsb_release 2>/dev/null` ]; then
      dist=`lsb_release -c | cut -f2`
      os=`lsb_release -i | cut -f2 | awk '{ print tolower($1) }'`

    elif [ -e /etc/debian_version ]; then
      # some Debians have jessie/sid in their /etc/debian_version
      # while others have '6.0.7'
      os=`cat /etc/issue | head -1 | awk '{ print tolower($1) }'`
      if grep -q '/' /etc/debian_version; then
        dist=`cut --delimiter='/' -f1 /etc/debian_version`
      else
        dist=`cut --delimiter='.' -f1 /etc/debian_version`
      fi

    else
      unknown_os
    fi
  fi

  if [ -z "$dist" ]; then
    unknown_os
  fi

  # remove whitespace from OS and dist name
  os="${os// /}"
  dist="${dist// /}"

  echo "Detected operating system as $os/$dist."
}

main ()
{
  detect_os
  curl_check

  # Need to first run apt-get update so that apt-transport-https can be
  # installed
  echo -n "Running apt-get update... "
  apt-get update &> /dev/null
  echo "done."

  # Install the debian-archive-keyring package on debian systems so that
  # apt-transport-https can be installed next
  install_debian_keyring

  echo -n "Installing apt-transport-https... "
  apt-get install -y apt-transport-https &> /dev/null
  echo "done."


  gpg_key_url="https://packages.gitlab.com/gitlab/gitlab-ce/gpgkey"
  apt_config_url="https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/config_file.list?os=${os}&dist=${dist}&source=script"

  apt_source_path="/etc/apt/sources.list.d/gitlab_gitlab-ce.list"

  echo -n "Installing $apt_source_path..."

  # create an apt config file for this repository
  curl -sSf "${apt_config_url}" > $apt_source_path
  curl_exit_code=$?

  if [ "$curl_exit_code" = "22" ]; then
    echo
    echo
    echo -n "Unable to download repo config from: "
    echo "${apt_config_url}"
    echo
    echo "This usually happens if your operating system is not supported by "
    echo "packagecloud.io, or this script's OS detection failed."
    echo
    echo "You can override the OS detection by setting os= and dist= prior to running this script."
    echo "You can find a list of supported OSes and distributions on our website: https://packages.gitlab.com/docs#os_distro_version"
    echo
    echo "For example, to force Ubuntu Trusty: os=ubuntu dist=trusty ./script.sh"
    echo
    echo "If you are running a supported OS, please email support@packagecloud.io and report this."
    [ -e $apt_source_path ] && rm $apt_source_path
    exit 1
  elif [ "$curl_exit_code" = "35" ]; then
    echo "curl is unable to connect to packagecloud.io over TLS when running: "
    echo "    curl ${apt_config_url}"
    echo "This is usually due to one of two things:"
    echo
    echo " 1.) Missing CA root certificates (make sure the ca-certificates package is installed)"
    echo " 2.) An old version of libssl. Try upgrading libssl on your system to a more recent version"
    echo
    echo "Contact support@packagecloud.io with information about your system for help."
    [ -e $apt_source_path ] && rm $apt_source_path
    exit 1
  elif [ "$curl_exit_code" -gt "0" ]; then
    echo
    echo "Unable to run: "
    echo "    curl ${apt_config_url}"
    echo
    echo "Double check your curl installation and try again."
    [ -e $apt_source_path ] && rm $apt_source_path
    exit 1
  else
    echo "done."
  fi

  echo -n "Importing packagecloud gpg key... "
  # import the gpg key
  curl -L "${gpg_key_url}" 2> /dev/null | apt-key add - &>/dev/null
  echo "done."

  echo -n "Running apt-get update... "
  # update apt on this system
  apt-get update &> /dev/null
  echo "done."

  echo
  echo "The repository is setup! You can now install packages."
}

main

3.

$ less /tmp/script.deb.sh

4.

$ sudo bash /tmp/script.deb.sh

5.

$ sudo apt-get install gitlab-ce

wait until done

6.

$ sudo gitlab-ctl reconfigure

respons:

Starting Chef Client, version 12.12.15
resolving cookbooks for run list: ["gitlab"]
Synchronizing Cookbooks:
  - gitlab (0.0.1)
  - runit (0.14.2)
  - package (0.0.0)
Installing Cookbook Gems:
Compiling Cookbooks...
.....
.....
<until>
.....
.....
Running handlers:
Running handlers complete
Chef Client finished, 233/326 resources updated in 01 minutes 49 seconds
gitlab Reconfigured!

7.

$ sudo ufw status

response:

Status: active

if not active, enable it

Status: inactive

$ sudo ufw enable

response:

Firewall is active and enabled on system startup

8.

$ sudo ufw allow http

$ sudo ufw allow OpenSSH

$ sudo ufw status

response:

Status: active

To                         Action      From
--                         ------      ----
80                         ALLOW       Anywhere                  
OpenSSH                    ALLOW       Anywhere                  
80 (v6)                    ALLOW       Anywhere (v6)             
OpenSSH (v6)               ALLOW       Anywhere (v6)

note:
sudo gitlab-ctl reconfigure
sudo gitlab-ctl start
sudo gitlab-ctl stop
sudo nano /etc/gitlab/gitlab.rb
sudo gitlab-ctl tail
sudo netstat -plunt
sudo service tomcat7 stop
sudo service gitlab restart
sudo gitlab-ctl restart nginx
ssh-keygen
cat ~/.ssh/id_rsa.pub
openssl rsa -in server.key.org -out server.key


ref:
https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-gitlab-on-ubuntu-16-04
https://docs.gitlab.com/ee/administration/restart_gitlab.html
https://forum.gitlab.com/t/solved-setting-up-gitlab-on-ubuntu-14-04-with-apache2-without-owning-a-domain-name/679/9