gitlab-org--gitlab-foss/doc/update/patch_versions.md

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# Universal update guide for patch versions
For example from 6.2.0 to 6.2.1, also see the [semantic versioning specification](http://semver.org/).
### 0. Backup
It's useful to make a backup just in case things go south:
(With MySQL, this may require granting "LOCK TABLES" privileges to the GitLab user on the database version)
```bash
cd /home/git/gitlab
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
```
### 1. Stop server
sudo service gitlab stop
### 2. Get latest code for the stable branch
```bash
cd /home/git/gitlab
sudo -u git -H git fetch --all
sudo -u git -H git checkout LATEST_TAG
```
Replace LATEST_TAG with the latest GitLab tag you want to upgrade to, for example `v6.6.3`.
### 3. Update gitlab-shell to the corresponding version
```bash
cd /home/git/gitlab-shell
sudo -u git -H git fetch
sudo -u git -H git checkout v`cat /home/git/gitlab/GITLAB_SHELL_VERSION`
```
### 4. Install libs, migrations, etc.
```bash
cd /home/git/gitlab
#PostgreSQL
sudo -u git -H bundle install --without development test mysql --deployment
# MySQL
sudo -u git -H bundle install --without development test postgres --deployment
sudo -u git -H bundle exec rake db:migrate RAILS_ENV=production
sudo -u git -H bundle exec rake assets:clean RAILS_ENV=production
sudo -u git -H bundle exec rake assets:precompile RAILS_ENV=production
sudo -u git -H bundle exec rake cache:clear RAILS_ENV=production
```
### 5. Start application
sudo service gitlab start
sudo service nginx restart
### 6. Check application status
Check if GitLab and its environment are configured correctly:
sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production
To make sure you didn't miss anything run a more thorough check with:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production
If all items are green, then congratulations upgrade complete!