lauraturk/circleci-heroku-continuous-deployment2.0.md

## circleci-heroku-continuous-deployment2.0.md

      
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              circleci-heroku-continuous-deployment2.0.md
            
          
    Deploying from circleci2.0 to Heroku

Resources:


circleci 2.0 docs
Managing SSH Keys on Heroku

Steps:

Prerequisites:

Heroku CLI installed on your computer
A project deployed to Heroku
A project in circleci set up using circleci version 2.0


Edit .circleci/config.yml


Nested under steps (after you run tests, etc.) add:

- run: bash .circleci/setup-heroku.sh
- add_ssh_keys:
    fingerprints:
      - $HEROKU_SSH_FINGERPRINT
- deploy:
    name: Deploy to Heroku if tests pass and branch is master
    command: |
      if [ "${CIRCLE_BRANCH}" == "master" ]; then
        git push --force git@heroku.com:$HEROKU_APP_NAME.git HEAD:refs/heads/master
        <any other necessary commands for heroku deployment you might need can go here>
      fi


Create a new file .circleci/setup-heroku.sh with the following:

#!/bin/bash
ssh-keyscan -H heroku.com >> ~/.ssh/known_hosts
# If you need access to the heroku CLI to run heroku commands in the deploy step add these lines:
# mkdir -p /usr/local/lib /usr/local/bin
# tar -xvzf heroku-linux-amd64.tar.gz -C /usr/local/lib
# ln -s /usr/local/lib/heroku/bin/heroku /usr/local/bin/heroku

cat > ~/.netrc << EOF
machine api.heroku.com
  login $HEROKU_LOGIN
  password $HEROKU_API_KEY
EOF

cat >> ~/.ssh/config << EOF
VerifyHostKeyDNS yes
StrictHostKeyChecking no
EOF


add Environment Variables to circleci


Key Name
Where to get it


HEROKU_API_KEY
Found in Heroku Account Settings: It is your individual API Key even if it is a company Account


HEROKU_LOGIN
Your Heroku login e.g: name.lastname@company.com


HEROKU_APP_NAME
The name of your app on Heroku


Create SSH keys


Create a SSH key locally
$ ssh-keygen -t rsa
Copy the fingerprint returned from ^^^^
Add another environment variable in circleci

HEROKU_SSH_FINGERPRINT

paste the copied fingerprint as the value


Add the public SSH to Heroku
$ heroku keys:add
Open ~/.ssh/id_rsa (or wherever you saved your ssh key) and copy key including -----Begin RSA PRIVATE KEY ---- and -----End RSA PRIVATE KEY------
Add SSH private key to circleci

in project settings -> SSH Permissions -> Add SSH Key
Hostname = git.heroku.com
Paste the private key and click Add SSH Key


Celebrate (trigger circleci on your master branch and watch it deploy!)
Key Name	Where to get it
`HEROKU_API_KEY`	Found in Heroku Account Settings: It is your individual API Key even if it is a company Account
`HEROKU_LOGIN`	Your Heroku login e.g: `name.lastname@company.com`
`HEROKU_APP_NAME`	The name of your app on Heroku