Merge branch 'ci-migration-doc-improvements' into 'master'
Ci migration doc improvements Use export improvements in CI 8.0.1, make upgrades a more prominent part of the process, do not shut down GitLab during CI data import. See merge request !1387
This commit is contained in:
commit
398092273b
|
@ -5,232 +5,243 @@ Edition (EE), GitLab CI is no longer its own application, but is instead built
|
|||
into the CE and EE applications.
|
||||
|
||||
This guide will detail the process of migrating your CI installation and data
|
||||
into your GitLab CE or EE installation.
|
||||
into your GitLab CE or EE installation. **You can only migrate CI data from
|
||||
GitLab CI 8.0 to GitLab 8.0; migrating between other versions (e.g.7.14 to 8.1)
|
||||
is not possible.**
|
||||
|
||||
### Before we begin
|
||||
We recommend that you read through the entire migration process in this
|
||||
document before beginning.
|
||||
|
||||
**You need to have a working installation of GitLab CI version 8.0 to perform
|
||||
this migration. The older versions are not supported and will most likely break
|
||||
this migration procedure.**
|
||||
### Overview
|
||||
|
||||
This migration cannot be performed online and takes a significant amount of
|
||||
time. Make sure to plan ahead.
|
||||
In this document we assume you have a GitLab server and a GitLab CI server. It
|
||||
does not matter if these are the same machine.
|
||||
|
||||
If you are running a version of GitLab CI prior to 8.0 please follow the
|
||||
appropriate [update guide](https://gitlab.com/gitlab-org/gitlab-ci/tree/master/doc/update/)
|
||||
before proceeding.
|
||||
The migration consists of three parts: updating GitLab and GitLab CI, moving
|
||||
data, and redirecting traffic.
|
||||
|
||||
The migration is divided into four parts and covers both manual and Omnibus
|
||||
installations:
|
||||
Please note that CI builds triggered on your GitLab server in the time between
|
||||
updating to 8.0 and finishing the migration will be lost. Your GitLab server
|
||||
can be online for most of the procedure; the only GitLab downtime (if any) is
|
||||
during the upgrade to 8.0. Your CI service will be offline from the moment you
|
||||
upgrade to 8.0 until you finish the migration procedure.
|
||||
|
||||
1. [GitLab CI](#part-i-gitlab-ci)
|
||||
1. [Gitlab CE (or EE)](#part-ii-gitlab-ce-or-ee)
|
||||
1. [Nginx configuration](#part-iii-nginx-configuration)
|
||||
1. [Finishing Up](#part-iv-finishing-up)
|
||||
### Before upgrading
|
||||
|
||||
### Part I: GitLab CI
|
||||
#### 1. Verify that backups work
|
||||
|
||||
#### 1. Stop GitLab CI
|
||||
Make sure that the backup script on both servers can connect to the database.
|
||||
|
||||
# Manual installation
|
||||
sudo service gitlab_ci stop
|
||||
```
|
||||
# On your CI server:
|
||||
# Omnibus
|
||||
sudo gitlab-ci-rake backup:create
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-ctl stop ci-unicorn ci-sidekiq
|
||||
|
||||
#### 2. Create a backup
|
||||
|
||||
The migration procedure modifies the structure of the CI database. If something
|
||||
goes wrong, you will not be able to revert to a previous version without a
|
||||
backup.
|
||||
|
||||
If your GitLab CI installation uses **MySQL** and your GitLab CE (or EE)
|
||||
installation uses **PostgreSQL** you'll need to convert the CI database by
|
||||
setting a `MYSQL_TO_POSTGRESQL` flag.
|
||||
|
||||
If you use the Omnibus package you most likely use **PostgreSQL** on both GitLab
|
||||
CE (or EE) and CI.
|
||||
|
||||
You can check which database each install is using by viewing their
|
||||
database configuration files:
|
||||
|
||||
cat /home/gitlab_ci/gitlab-ci/config/database.yml
|
||||
cat /home/git/gitlab/config/database.yml
|
||||
|
||||
- If both applications use the same database `adapter`, create the backup with
|
||||
this command:
|
||||
|
||||
# Manual installation
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec rake backup:create RAILS_ENV=production
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-ci-rake backup:create
|
||||
|
||||
- If CI uses MySQL, and CE (or EE) uses PostgreSQL, create the backup with this
|
||||
command (note the `MYSQL_TO_POSTGRESQL` flag):
|
||||
|
||||
# Manual installation
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec rake backup:create RAILS_ENV=production MYSQL_TO_POSTGRESQL=1
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-ci-rake backup:create MYSQL_TO_POSTGRESQL=1
|
||||
|
||||
#### 3. Remove cronjob
|
||||
|
||||
**Note:** This step is only required for **manual installations**. Omnibus users
|
||||
can [skip to the next step](#part-ii-gitlab-ce-or-ee).
|
||||
|
||||
# Manual installation
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec whenever --clear-crontab
|
||||
|
||||
### Part II: GitLab CE (or EE)
|
||||
|
||||
#### 1. Ensure GitLab is updated
|
||||
|
||||
Your GitLab CE or EE installation **must be version 8.0**. If it's not, follow
|
||||
the [update guide](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/update/7.14-to-8.0.md)
|
||||
before proceeding.
|
||||
|
||||
If you use the Omnibus packages simply run `apt-get upgrade` to install the
|
||||
latest version.
|
||||
|
||||
#### 2. Prevent CI usage during the migration process
|
||||
|
||||
As an administrator, go to **Admin Area** -> **Settings**, and under **Continuous
|
||||
Integration** uncheck **Disable to prevent CI usage until rake ci:migrate is run
|
||||
(8.0 only)**.
|
||||
|
||||
This will disable the CI integration and prevent users from creating CI projects
|
||||
until the migration process is completed.
|
||||
|
||||
#### 3. Stop GitLab
|
||||
|
||||
Before you can migrate data you need to stop the GitLab service first:
|
||||
|
||||
# Manual installation
|
||||
sudo service gitlab stop
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-ctl stop unicorn sidekiq
|
||||
|
||||
#### 4. Create a backup
|
||||
|
||||
This migration poses a **significant risk** of breaking your GitLab
|
||||
installation. Create a backup before proceeding:
|
||||
|
||||
# Manual installation
|
||||
cd /home/git/gitlab
|
||||
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-rake gitlab:backup:create
|
||||
|
||||
It's possible to speed up backup creation by skipping repositories and uploads:
|
||||
|
||||
# Manual installation
|
||||
cd /home/git/gitlab
|
||||
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production SKIP=repositories,uploads
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-rake gitlab:backup:create SKIP=repositories,uploads
|
||||
|
||||
#### 5. Copy secret tokens from CI
|
||||
|
||||
The `secrets.yml` file stores encryption keys for secure variables.
|
||||
|
||||
- **Manual installations** need to copy the contents of GitLab CI's
|
||||
`config/secrets.yml` file to the same file in GitLab CE:
|
||||
|
||||
```bash
|
||||
# Manual installation
|
||||
sudo cp /home/gitlab_ci/gitlab-ci/config/secrets.yml /home/git/gitlab/config/secrets.yml
|
||||
sudo chown git:git /home/git/gitlab/config/secrets.yml
|
||||
sudo chown 0600 /home/git/gitlab/config/secrets.yml
|
||||
```
|
||||
|
||||
- **Omnibus installations** where GitLab CI and CE (or EE) are on the same
|
||||
server don't need to do anything further, because the secrets are stored in
|
||||
`/etc/gitlab/gitlab-secrets.json`.
|
||||
|
||||
- **Omnibus installations** where GitLab CI is on a different server than CE (or
|
||||
EE) will need to:
|
||||
1. On the CI server, copy the `db_key_base` value from
|
||||
`/etc/gitlab/gitlab-secrets.json`
|
||||
1. On the CE (or EE) server, add `gitlab_ci['db_key_base'] =
|
||||
"VALUE_FROM_ABOVE"` to the `/etc/gitlab/gitlab.rb` file and run `sudo
|
||||
gitlab-ctl reconfigure`
|
||||
|
||||
#### 6. New configuration options for `gitlab.yml`
|
||||
|
||||
**Note:** This step is only required for **manual installations**. Omnibus users
|
||||
can [skip to the next step](#7-copy-backup-from-gitlab-ci).
|
||||
|
||||
There are new configuration options available for `gitlab.yml`. View them with
|
||||
the command below and apply them manually to your current `gitlab.yml`:
|
||||
|
||||
git diff origin/7-14-stable:config/gitlab.yml.example origin/8-0-stable:config/gitlab.yml.example
|
||||
|
||||
The new options include configuration settings for GitLab CI.
|
||||
|
||||
#### 7. Copy backup from GitLab CI
|
||||
|
||||
```bash
|
||||
# Manual installation
|
||||
sudo cp -v /home/gitlab_ci/gitlab-ci/tmp/backups/*_gitlab_ci_backup.tar /home/git/gitlab/tmp/backups
|
||||
sudo chown git:git /home/git/gitlab/tmp/backups/*_gitlab_ci_backup.tar
|
||||
|
||||
# Omnibus installation
|
||||
sudo cp -v /var/opt/gitlab/ci-backups/*_gitlab_ci_backup.tar /var/opt/gitlab/backups/
|
||||
sudo chown git:git /var/opt/gitlab/backups/*_gitlab_ci_backup.tar
|
||||
# Source
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec rake backup:create RAILS_ENV=production
|
||||
```
|
||||
|
||||
If moving across the servers you can use `scp`.
|
||||
However, this requires you to provide an authorized key or password to login to
|
||||
the GitLab CE (or EE) server from the CI server. You can try to use ssh-agent
|
||||
from your local machine to have that: login to your GitLab CI server using
|
||||
`ssh -A`.
|
||||
Also check on your GitLab server.
|
||||
|
||||
```bash
|
||||
# Manual installation
|
||||
scp /home/gitlab_ci/gitlab-ci/tmp/backups/*_gitlab_ci_backup.tar root@gitlab.example.com:/home/git/gitlab/tmp/backup
|
||||
```
|
||||
# On your GitLab server:
|
||||
# Omnibus
|
||||
sudo gitlab-rake gitlab:backup:create SKIP=repositories,uploads
|
||||
|
||||
# Omnibus installation
|
||||
scp /var/opt/gitlab/ci-backups/*_gitlab_ci_backup.tar root@gitlab.example.com:/var/opt/gitlab/backups/
|
||||
# Source
|
||||
cd /home/git/gitlab
|
||||
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production SKIP=repositories,uploads
|
||||
```
|
||||
|
||||
#### 8. Import GitLab CI backup
|
||||
If this fails you need to fix it before upgrading to 8.0. Also see
|
||||
https://about.gitlab.com/getting-help/
|
||||
|
||||
Now you'll import the GitLab CI database dump that you created earlier into the
|
||||
GitLab CE or EE database:
|
||||
#### 2. Check source and target database types
|
||||
|
||||
# Manual installation
|
||||
sudo -u git -H bundle exec rake ci:migrate RAILS_ENV=production
|
||||
Check what databases you use on your GitLab server and your CI server.
|
||||
Look for the 'adapter:' line. If your CI server and your GitLab server use
|
||||
the same database adapter no special care is needed. If your CI server uses
|
||||
MySQL and your GitLab server uses PostgreSQL you need to pass a special option
|
||||
during the 'Moving data' part. **If your CI server uses PostgreSQL and your
|
||||
GitLab server uses MySQL you cannot migrate your CI data to GitLab 8.0.**
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-rake ci:migrate
|
||||
```
|
||||
# On your CI server:
|
||||
# Omnibus
|
||||
sudo gitlab-ci-rake env:info
|
||||
|
||||
This task will take some time.
|
||||
# Source
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec rake env:info RAILS_ENV=production
|
||||
```
|
||||
|
||||
This migration task automatically re-enables the CI setting that you
|
||||
[disabled earlier](#2-prevent-ci-usage-during-the-migration-process).
|
||||
```
|
||||
# On your GitLab server:
|
||||
# Omnibus
|
||||
sudo gitlab-rake gitlab:env:info
|
||||
|
||||
#### 9. Start GitLab
|
||||
# Source
|
||||
cd /home/git/gitlab
|
||||
sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production
|
||||
```
|
||||
|
||||
You can start GitLab CE (or EE) now and see if everything is working:
|
||||
#### 3. Storage planning
|
||||
|
||||
# Manual installation
|
||||
sudo service gitlab start
|
||||
Decide where to store CI build traces on GitLab server. GitLab CI uses
|
||||
files on disk to store CI build traces. The default path for these build
|
||||
traces is `/var/opt/gitlab/gitlab-ci/builds` (Omnibus) or
|
||||
`/home/git/gitlab/builds` (Source). If you are storing your repository data in
|
||||
a special location, or if you are using NFS, you should make sure that you
|
||||
store build traces on the same storage as your Git repositories.
|
||||
|
||||
# Omnibus installation
|
||||
sudo gitlab-ctl restart unicorn sidekiq
|
||||
### I. Upgrading
|
||||
|
||||
### Part III: Nginx configuration
|
||||
From this point on, GitLab CI will be unavailable for your end users.
|
||||
|
||||
This section is only required for **manual installations**. Omnibus users can
|
||||
[skip to the final step](#part-iv-finishing-up).
|
||||
#### 1. Upgrade GitLab to 8.0
|
||||
|
||||
First upgrade your GitLab server to version 8.0:
|
||||
https://about.gitlab.com/update/
|
||||
|
||||
#### 2. Disable CI on the GitLab server during the migration
|
||||
|
||||
After you update, go to the admin panel and temporarily disable CI. As
|
||||
an administrator, go to **Admin Area** -> **Settings**, and under
|
||||
**Continuous Integration** uncheck **Disable to prevent CI usage until rake
|
||||
ci:migrate is run (8.0 only)**.
|
||||
|
||||
#### 3. CI settings are now in GitLab
|
||||
|
||||
If you want to use custom CI settings (e.g. change where builds are
|
||||
stored), please update `/etc/gitlab/gitlab.rb` (Omnibus) or
|
||||
`/home/git/gitlab/config/gitlab.yml` (Source).
|
||||
|
||||
#### 4. Upgrade GitLab CI to 8.0
|
||||
|
||||
Now upgrade GitLab CI to version 8.0. If you are using Omnibus packages,
|
||||
this may have already happened when you upgraded GitLab to 8.0.
|
||||
|
||||
#### 5. Disable GitLab CI on the CI server
|
||||
|
||||
Disable GitLab CI after upgrading to 8.0.
|
||||
|
||||
```
|
||||
# On your CI server:
|
||||
# Omnibus
|
||||
sudo gitlab-ctl stop ci-unicorn
|
||||
sudo gitlab-ctl stop ci-sidekiq
|
||||
|
||||
# Source
|
||||
sudo service gitlab_ci stop
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec whenever --clear-crontab
|
||||
```
|
||||
|
||||
### II. Moving data
|
||||
|
||||
#### 1. Database encryption key
|
||||
|
||||
Move the database encryption key from your CI server to your GitLab
|
||||
server. The command below will show you what you need to copy-paste to your
|
||||
GitLab server. On Omnibus GitLab servers you will have to add a line to
|
||||
`/etc/gitlab/gitlab.rb`. On GitLab servers installed from source you will have
|
||||
to replace the contents of `/home/git/gitlab/config/secrets.yml`.
|
||||
|
||||
```
|
||||
# On your CI server:
|
||||
# Omnibus
|
||||
sudo gitlab-ci-rake backup:show_secrets
|
||||
|
||||
# Source
|
||||
cd /home/gitlab_ci/gitlab-ci
|
||||
sudo -u gitlab_ci -H bundle exec rake backup:show_secrets RAILS_ENV=production
|
||||
```
|
||||
|
||||
#### 2. SQL data and build traces
|
||||
|
||||
Create your final CI data export. If you are converting from MySQL to
|
||||
PostgreSQL, add ` MYSQL_TO_POSTGRESQL=1` to the end of the rake command. When
|
||||
the command finishes it will print the path to your data export archive; you
|
||||
will need this file later.
|
||||
|
||||
```
|
||||
# On your CI server:
|
||||
# Omnibus
|
||||
sudo gitlab-ci-rake backup:create
|
||||
|
||||
# Source
|
||||
cd /home/git/gitlab
|
||||
sudo -u git -H bundle exec rake backup:create RAILS_ENV=production
|
||||
```
|
||||
|
||||
#### 3. Copy data to the GitLab server
|
||||
|
||||
If you were running GitLab and GitLab CI on the same server you can skip this
|
||||
step.
|
||||
|
||||
Copy your CI data archive to your GitLab server. There are many ways to do
|
||||
this, below we use SSH agent forwarding and 'scp', which will be easy and fast
|
||||
for most setups. You can also copy the data archive first from the CI server to
|
||||
your laptop and then from your laptop to the GitLab server.
|
||||
|
||||
```
|
||||
# Start from your laptop
|
||||
ssh -A ci_admin@ci_server.example
|
||||
# Now on the CI server
|
||||
scp /path/to/12345_gitlab_ci_backup.tar gitlab_admin@gitlab_server.example:~
|
||||
```
|
||||
|
||||
#### 4. Move data to the GitLab backups folder
|
||||
|
||||
Make the CI data archive discoverable for GitLab. We assume below that you
|
||||
store backups in the default path, adjust the command if necessary.
|
||||
|
||||
```
|
||||
# On your GitLab server:
|
||||
# Omnibus
|
||||
sudo mv /path/to/12345_gitlab_ci_backup.tar /var/opt/gitlab/backups/
|
||||
|
||||
# Source
|
||||
sudo mv /path/to/12345_gitlab_ci_backup.tar /home/git/gitlab/tmp/backups/
|
||||
```
|
||||
|
||||
#### 5. Import the CI data into GitLab.
|
||||
|
||||
This step will delete any existing CI data on your GitLab server. There should
|
||||
be no CI data yet because you turned CI on the GitLab server off earlier.
|
||||
|
||||
```
|
||||
# On your GitLab server:
|
||||
# Omnibus
|
||||
sudo gitlab-rake ci:migrate
|
||||
|
||||
# Source
|
||||
cd /home/git/gitlab
|
||||
sudo -u git -H bundle exec rake ci:migrate RAILS_ENV=production
|
||||
```
|
||||
|
||||
#### 6. Restart GitLab
|
||||
|
||||
```
|
||||
# On your GitLab server:
|
||||
# Omnibus
|
||||
sudo gitlab-ctl hup unicorn
|
||||
sudo gitlab-ctl restart sidekiq
|
||||
|
||||
# Source
|
||||
sudo service gitlab reload
|
||||
```
|
||||
|
||||
### III. Redirecting traffic
|
||||
|
||||
If you were running GitLab CI with Omnibus packages and you were using the
|
||||
internal NGINX configuration your CI service should now be available both at
|
||||
`ci.example.com` (the old address) and `gitlab.example.com/ci`. **You are done!**
|
||||
|
||||
If you installed GitLab CI from source we now need to configure a redirect in
|
||||
NGINX so that existing CI runners can keep using the old CI server address, and
|
||||
so that existing links to your CI server keep working.
|
||||
|
||||
#### 1. Update Nginx configuration
|
||||
|
||||
|
@ -296,16 +307,6 @@ You should also make sure that you can:
|
|||
|
||||
sudo /etc/init.d/nginx restart
|
||||
|
||||
### Part IV: Finishing Up
|
||||
|
||||
If everything went well you should be able to access your migrated CI install by
|
||||
visiting `https://gitlab.example.com/ci/`. If you visit the old GitLab CI
|
||||
address, you should be redirected to the new one.
|
||||
|
||||
**Enjoy!**
|
||||
|
||||
### Troubleshooting
|
||||
|
||||
#### Restore from backup
|
||||
|
||||
If something went wrong and you need to restore a backup, consult the [Backup
|
||||
|
|
Loading…
Reference in New Issue