Continuous integration deploy

Continuous integration deploy

The following describes the steps for setting up a continuous integration deploy on an Amazon EC2 Ubuntu Server 14.04 LTS. It can be readily adapted to other environments.

The deploy upgrades docker and docker-compose, fetches the latest docker-compose.yml, pulls the latest images, and restarts the containers.

1. As root, install docker and docker-compose:

    apt-get update
    curl -sSL https://get.docker.com/ | sh
    usermod -aG docker ubuntu
    apt-get install python-pip
    pip install -U docker-compose
   

2. Follow these (or similar) instructions for setting up email.

3. Add the deploy script as /home/ubuntu/run_sfm.sh:

    #!/bin/bash 
   
    function error_exit
    {
    	echo "SFM CI deploy: $1" 1>&2
    	exit 1
    }
   
    export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
   
    #Uograde docker and docker-compose
    curl -sSL https://get.docker.com/ > get_docker.sh
    if [ "$?" != "0" ]; then
    	error_exit "Downloading docker install failed"
    fi
   
    sh get_docker.sh
    if [ "$?" != "0" ]; then
    	error_exit "Docker install failed"
    fi
   
    pip install -U docker-compose
    if [ "$?" != "0" ]; then
            error_exit "Upgrading docker-compose failed"
    fi
   
    #Get files
    curl -L https://github.com/gwu-libraries/sfm/raw/t6-docker/docker-compose.yml > docker-compose.yml
    if [ "$?" != "0" ]; then
            error_exit "Fetching docker-compose.yml failed"
    fi
    curl -L https://github.com/gwu-libraries/sfm/raw/t6-docker/example.secrets.env > secrets.env
    if [ "$?" != "0" ]; then
            error_exit "Fetching secrets.env failed"
    fi
   
    #Pull containers
    docker-compose pull
    if [ "$?" != "0" ]; then
            error_exit "Pulling containers failed"
    fi
   
    #Start containers
    docker-compose up -d
    if [ "$?" != "0" ]; then
            error_exit "Bringing up containers failed"
    fi
   
    echo "SFM CI deploy: Succeeded"
   

and then make executable:

    chmod +x /home/ubuntu/run_sfm.sh

4. Setup cron to run script at 1am every night and email the results:

    sudo crontab -e
   

and add line (with appropriate email address):

    0 1 * * * /home/ubuntu/run_sfm.sh > /home/ubuntu/log.txt 2>&1; cat /home/ubuntu/log.txt | mail -s "`tail -1 /home/ubuntu/log.txt`" justinlittman@email.gwu.edu