GitLab CD Samples

.gitlab-ci.yml

# Node docker image on which this would be run
image: node:latest

stages:
  #- test
  - deploy

  # lint and test are two different jobs in the same stage.
  # This allows us to run these two in parallel and making build faster

  # Add lint job later
  #lint:
  #  stage: test
  #  script:
  #    - npm run lint

  # test job
  #test:
  #  stage: test
  #  script:
  #    - npm run test
  # ToDo: Add coverage
  # ToDo: Add lint job

deployToAWS:
  before_script:
    #This command is run before actual stages start running
    - eval $(ssh-agent -s)
    - echo -n "$PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
    - mkdir -p ~/.ssh
    - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'

  environment:
    name: Staging
    url: http://api.yoursite.com:5000
  only:
    #    - development
    - demo-app
  stage: deploy
  script:
    #    - bash deploy/deploy.sh
    - npm i -g pm2
    - pm2 deploy ecosystem.config.js production setup
    - pm2 deploy ecosystem.config.js production

deploy.sh

#!/bin/bash
# alternative deployment without pm2
# any future command that fails will exit the script
set -e
##echo "got here"
# Lets write the public key of our aws instance
eval $(ssh-agent -s)
##echo "in between"
#ssh-add <(echo "$PRIVATE_KEY")
echo "$PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
##echo "got here2"

# ** Alternative approach
# echo -e "$PRIVATE_KEY" > /root/.ssh/id_rsa
# chmod 600 /root/.ssh/id_rsa
# ** End of alternative approach

# disable the host key checking.
chmod 700 -R ./deploy
./deploy/disableHostKeyChecking.sh

# we have already setup the DEPLOYER_SERVER in our gitlab settings which is a
# comma seperated values of ip addresses.
DEPLOY_SERVERS=$DEPLOY_SERVERS

# lets split this string and convert this into array
# In UNIX, we can use this commond to do this
# ${string//substring/replacement}
# our substring is "," and we replace it with nothing.
ALL_SERVERS=(${DEPLOY_SERVERS//,/ })
echo "ALL_SERVERS ${ALL_SERVERS}"

# Lets iterate over this array and ssh into each EC2 instance
# Once inside.
# 1. Stop the server
# 2. Take a pull
# 3. Start the server
for server in "${ALL_SERVERS[@]}"
do
  echo "deploying to ${server}"
  ssh -v -i ~/.ssh/test ec2-user@${server} 'bash -s' < ./deploy/updateAndRestart.sh
done

disableHostKeyChecking.sh

# This the the prompt we get whenever we ssh into the box and get the message like this
#
# The authenticity of the host 'ip address' cannot be verified....
#
# Below script will disable that prompt

# note ">>". It creates a file if it does not exits.
# The file content we want is below
#
# Host *
#   StrictHostKeyChecking no
#

# any future command that fails will exit the script
set -e
mkdir -p ~/.ssh
touch ~/.ssh/config
echo -e "Host *\n\tStrictHostKeyChecking no\n\n" >> ~/.ssh/config

updateAndRestart.sh

#!/usr/bin/env bash
##!/bin/bash
#
## any future command that fails will exit the script
#set -e
#
## Delete the old repo
rm -rf /home/ec2-user/api
#

## clone the repo again
git clone git@gitlab.com:REPO -b development --single-branch /home/ec2-user/api
#
cd /home/ec2-user/api
echo "Running npm install"
npm install
echo "in update"

# Deploy
echo "Setup target server directories"
npm install pm2@latest -g

pm2 deploy ecosystem.config.js production setup 2>&1 || true
echo "make deploy"
pm2 deploy ecosystem.config.js production update


##source the nvm file. In an non
##If you are not using nvm, add the actual path like
## PATH=/home/ubuntu/node/bin:$PATH
#source /home/ec2-user/.nvm/nvm.sh
#
## stop the previous pm2
#pm2 kill && npm remove pm2 -g
#
##pm2 needs to be installed globally as we would be deleting the repo folder.
## this needs to be done only once as a setup script.
#npm install pm2 -g
## starting pm2 daemon
#pm2 status
#
#cd /home/ec2-user/api
#
##install npm packages
#echo "Running npm install"
#npm install
#echo "in update"
#
##Restart the node server
#npm start
##pm2 start ./dist/app.js --watch --ignore-watch="node_modules"