With Oracle Cloud Infrastructure article, you can deploy for free 2 VM ARM, for example your GitLab instance.
The article guides you through deploying your GitLab instance.
Here I provide you with the steps to update GitLab to the latest version and configure your instance to use a custom domain for free using DuckDNS, send emails and enable free SSL certificate with Let's Encrypt.
Upgrade GitLab
Upgrade following the GitLab upgrade path
https://docs.GitLab.com/ee/update/index.html#upgrade-paths
sudo yum -y update Gitlab-ee-13.12.15-ee.0.el8 sudo yum -y update Gitlab-ee-14.0.12-ee.0.el8
Finally, one last update
sudo yum -y update
Register your custom domain with DuckDNS
Create an account on www.duckdons.org.
Create your subdomain
Create your subdomain myinstance.duckdns.org using your OCI instance public IP.
Follow DuckDNS steps. Create /etc/duckdns/duck.sh
mkdir duckdns cd duckdns vi duck.sh
In the file add your custom DuckDNS configuration.
echo url="https://www.duckdns.org/update?domains=myinstance&token=a7c4b0ad-114e-40ef-ba1d-d218904a50f2&ip=" | curl -k -o ~/duckdns/duck.log -K -
Create your cron entry
*/5 * * * * ~/duckdns/duck.sh >/dev/null 2>&1
Update GitLab to use your custom domain
Update GitLab configuration file to update your external_url
sudo vim /etc/gitlab/gitlab.rb external_url 'http://GitLab.example.com'
Set your hostname
sudo hostnamectl set-hostname myinstance.duckdns.org
Reload configuration sudo GitLab-ctl reconfigure
Review configuration
sudo GitLab-ctl show-config
Configure GitLab to send email
Create OCI SMTP credentials
Follow the OCI steps to generate a username and password
https://docs.oracle.com/en-us/iaas/Content/Email/Reference/gettingstarted.htm https://docs.oracle.com/en-us/iaas/Content/Email/Tasks/generatesmtpcredentials.htm#Generate_SMTP_Credentials_for_a_User
Configuration GitLab to use Postfix
https://docs.oracle.com/en-us/iaas/Content/Email/Reference/postfix.htm
SMTP credentials to send emails
Edit GitLab configuration to use the credentials generated
sudo vim /etc/GitLab/GitLab.rb GitLab_rails['smtp_user_name'] = "ocid1.user.oc1..aaaaaaaaaxxxxx.ii@ocid1.tenancy.oc1...kd.com" GitLab_rails['smtp_password'] = "3e4rtyhu6yt_W"
Test to send email from GitLab
sudo GitLab-rails console
Notify.test_email('my.email@domain.com', 'Message Subject', 'Message Body').deliver_now
https://docs.GitLab.com/omnibus/settings/smtp.html#testing-the-smtp-configuration
Tips and tricks
Send email in bash
sudo yum install mailx
The sender needs to be approved
https://docs.oracle.com/en-us/iaas/Content/Email/Reference/gettingstarted.htm#start__config
echo "This is a test message" | mail -s "Test" -r my.email@domain.com my.email@domain.com Check maillog sudo tail -f /var/log/maillog
SSL configuration
https://docs.GitLab.com/omnibus/settings/ssl.html#install-custom-public-certificates
In the following article, how to deploy your code
