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Setting up your CI/CD infrastructure

Setting up Stage and Prod environments

We are going to set up "stage" (UAT) and "prod" environments, which jobs in our CI/CD pipeline can then target.

We'll put Stage and Prod on the same server, for expediency for the tutorial.

Setting up your CI/CD infrastructure

Setting up Stage and Prod environments

Web server

Install Apache2 and change the port to 8008 (since GitLab is listening on 80).

sudo apt-get update; \
sudo apt install -y apache2 php libapache2-mod-php; \
sudo sed -i /etc/apache2/ports.conf -e 's:Listen 80:Listen 8008:'; \
sudo service apache2 start; \
curl http://localhost:8008/ | grep -i welcome --max-count=1

You should see the Ubuntu Apache welcome page.

Setting up your CI/CD infrastructure

Setting up Stage and Prod environments

DNS

Add stage.example.com and prod.example.com to the localhost record in /etc/hosts so we can test the vhosts from our lab Linux server. Also add gitlab.example.com, so that you can copy and paste my git clone examples later without fiddling with the hostname.

Run:

sudo sed -e 's:^127.0.0.1.*:127.0.0.1 localhost stage.example.com prod.example.com gitlab.example.com:' -i /etc/hosts

Setting up your CI/CD infrastructure

Set up Stage

Document root

sudo mkdir /var/www/stg-html
echo "<?php echo '<p>Stage - Hello World</p>'; ?>" | sudo tee /var/www/stg-html/index.php

Setting up your CI/CD infrastructure

Set up Stage

Create httpd vhost config

Set up httpd config for the "stage" virtual host:

cat <<EOF | sudo tee /etc/apache2/sites-available/001-stg.conf
<VirtualHost *:8008>
        ServerName stage.example.com
        DocumentRoot /var/www/stg-html
        ErrorLog ${APACHE_LOG_DIR}/stg.error.log
        CustomLog ${APACHE_LOG_DIR}/stg.access.log combined
</VirtualHost>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
EOF

Setting up your CI/CD infrastructure

Set up Stage

Load httpd vhost config

Enable vhost:

sudo ln -s /etc/apache2/sites-available/001-stg.conf /etc/apache2/sites-enabled/
sudo service apache2 reload

Setting up your CI/CD infrastructure

Set up Stage

Test httpd vhost config

Test it, it should say <p>Stage - Hello World</p>.

curl http://stage.example.com:8008/

Example:

root@ip-172-31-27-145:~# curl http://stage.example.com:8008/
<p>Stage - Hello World</p>root@ip-172-31-27-145:~#
root@ip-172-31-27-145:~#

Setting up your CI/CD infrastructure

Set up Prod

Document root

sudo mkdir /var/www/prod-html
echo "<?php echo '<p>Prod - Hello World</p>'; ?>" | sudo tee /var/www/prod-html/index.php

Setting up your CI/CD infrastructure

Set up Prod

Create httpd vhost config

cat <<EOF | sudo tee /etc/apache2/sites-available/002-prod.conf
<VirtualHost *:8008>
        ServerName prod.example.com
        DocumentRoot /var/www/prod-html
        ErrorLog ${APACHE_LOG_DIR}/prod.error.log
        CustomLog ${APACHE_LOG_DIR}/prod.access.log combined
</VirtualHost>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
EOF

Setting up your CI/CD infrastructure

Set up Prod

Load httpd vhost config

Enable and activate the new site:

sudo ln -s /etc/apache2/sites-available/002-prod.conf /etc/apache2/sites-enabled/
sudo service apache2 reload

Setting up your CI/CD infrastructure

Set up Prod

Test httpd vhost config

Test it:

curl http://prod.example.com:8008/

You should see <p>Prod - Hello World</p>.