This guide shows a Git and WordPress workflow and demonstrates version control using Git from a local development environment on OSX to a staging site webserver.
For the Database control we will use WP Migrate Pro.
A second remote repo for a production server would also need to be added in a real world scenario. This guide just uses local and staging sites.
This guide uses CentOS as the staging server which comes with Git and you can install Git for OSX, an easy install method here.
The benefits of a Git workflow are numerous, including the ability to work local and sync your files in seconds to a remote repo.
Set up SSH (no passwords)
A key requisite for this is that you have SSH access to your website which in some shared hosting instances can be limited.
The biggest initial hurdle in getting the workflow going is to have passwordless SSH connection by transferring your locally generated public key into the authorised file of the remote server, once this is done and the connection works without passwords, you are good to go.
What part of the WordPress hierarchy will be under Version Control
In this guide the whole WordPress installation inside the webroot; /public_html/ is going to be the example. This can be narrowed down to just the wp-content folder, or any particular directory you want under version control such as just the theme folder.
On start to finish projects I find doing the whole install easier to manage and a second git repo just for the theme. Git will be looking after the actual files, whereas WP Migrate Pro will be sync’ing the database.
Remote Server – Set Up Git Staging Repo
First thing is to set up the staging server repo, but do it outside of the webroot public_html one level above in the user home is good. This will contain the version control data and later we will push the actual source files to our WordPress install directory which will be known as the working directory. So SSH into your staging server and switch to home…
If SSH is on a non-standard port:
ssh [email protected] -p2000
Move to the home directory
Make a directory which will store our version control data and initialise it with a -bare option which will have no working directory. This is the way this needs to work and we will push the actual files to our working directory destination when we use the Git hooks.
git --bare init
This will be eventually be our origin/master branch, you should be left with output like so
Initialized empty Git repository in /home/username/wpstaging.git/
Local Dev Set Up Git Repo
Now lets set up a local Git repo and add the server repo as our remote repo. In this local example, the directory will be a local development site in WordPress which already has files already in it.
Add all the files to be tracked (or only the ones you want), the period will add all files or else use the filenames themselves to add instead of the period:
git add .
And commit all the files
git commit -m "first commit"
Check the status and we should have a clean directory
# On branch master nothing to commit, working directory clean
Add the Remote to the Local Repo
Still on the local environment, time to add the remote repo.
We will set up the remote repo branch as ‘staging‘. Our local repo is master.
git remote add staging ssh:[email protected]:/home/username/wpstaging.git
Or non-standard port
git remote add staging ssh:[email protected]:2000/home/username/wpstaging.git
I found that for cPanel/CentOS when creating the remote you need to prefix the address with the ssh:// protocol.
Now push our files and version control data up from our local master branch to our remote staging branch, this will take time depending on the size of the site.
git push staging master
You can check the remote URL repo by running
git remote show staging
Pushing the Server Repo to our Working Directory with Git Hooks
SSH back into your server and the actual working directory will be the webroot likely either public_html or htdocs
Move to your staging repo and change directory into the hooks directory
Make a new post-receive hook this hook will action once a remote repo has pushed to it, in other words once our local repo has pushed data to it it will execute the action inside – which is to move our latest tracked files to their destination, our webroot working directory.
#!/bin/sh git --work-tree=/home/username/public_html --git-dir=/home/username/wpstaging.git checkout -f
So here we are declaring the actual working directory and where the data is coming from. Save the file and make it executable
chmod +x post-receive
Test a commit and push back on your Local Repo
First set the remote staging repo as the upstream master, so when we use git push it will always go to the staging repo
git push --set-upstream staging master
Make a change to the WordPress theme and commit it
git commit -am "first edit"
Then push it to the remote server
You should see along the lines of
To ssh:[email protected]/home/username/wptheme.git 88003b9..600c2ef master -> master
Check your working directory on the remote server and you should see your WordPress Theme.
Now all changes made locally will be pushed and tracked from local to remote.
But what about the database
So far then all the files will have pushed to the webroot but there will be no site as there is no database. This is where WP Migrate Pro comes in. First thing to do is create an empty database on the staging site and import the local database.
So in the local dev environment migrate and save the local db with the correct staging name and URL, then import this db into the staging environment through phpMyadmin or Sequel Pro.
wp-config.php issues 🙁
Before you can login you will need to adjust the staging db name and password in wp-config.php as it will have received the local db credentials which may have been different.
For a more seamless workflow set the local dev database name/password to be strong and just use the same in the staging environment. If you do want them with separate credentials you could create a .gitignore file on the local dev and ignore wp-config.php – and if you have already starting tracking it you can untrack it with
git rm --cached wp-config.php
So now you can use a separate config for both local and staging
Setting up WP Migrate DB Pro on the Staging Server
So in the staging server WordPress install set up WP Migrate Pro by first of all resetting the API key and enabling the Accept push requests to allow the db to be overwritten – then copy the connection info as this will be added to the local dev install.
Setting up WP Migrate DB Pro on the Local Server
Once the connection is made it will bring in the connection details, WP Migrate Pro will attempt to connect via SSL and if it can’t it will generate a warning about going over http. No biggie.
So when you need to update the database from local to staging in Migrate Pro select your profile and migrate.
Cloning the Remote Repo
You or others can clone the remote repo using the git clone and – in this instance…
git clone ssh:[email protected]/home/username/wpstage.git
Once you have got your head around how it works you can also add in a 3rd production Git repo to the workflow by adding in an additional profile in WP Migrate Pro and a second remote branch in Git with a corresponding post-receive hook and add this as a branch to the local repo, when you want to push to the Production Repo just change the branch name when using git push