Commit 65b95ccb authored by Robert Speicher's avatar Robert Speicher

Merge branch 'fix/events-data-limit-for-mysql' into 'master'

Fix limit for `data` column in `events` table when using MySQL

Closes #9084 

See merge request !2486
parents 23bb6aef 402feec6
...@@ -64,6 +64,7 @@ v 8.4.0 (unreleased) ...@@ -64,6 +64,7 @@ v 8.4.0 (unreleased)
- Remove leading comma on award emoji when the user is the first to award the emoji (Zeger-Jan van de Weg) - Remove leading comma on award emoji when the user is the first to award the emoji (Zeger-Jan van de Weg)
- Add build artifacts browser - Add build artifacts browser
- Improve UX in builds artifacts browser - Improve UX in builds artifacts browser
- Increase default size of `data` column in `events` table when using MySQL
v 8.3.4 v 8.3.4
- Use gitlab-workhorse 0.5.4 (fixes API routing bug) - Use gitlab-workhorse 0.5.4 (fixes API routing bug)
......
...@@ -6,5 +6,6 @@ class LimitsToMysql < ActiveRecord::Migration ...@@ -6,5 +6,6 @@ class LimitsToMysql < ActiveRecord::Migration
change_column :merge_request_diffs, :st_diffs, :text, limit: 2147483647 change_column :merge_request_diffs, :st_diffs, :text, limit: 2147483647
change_column :snippets, :content, :text, limit: 2147483647 change_column :snippets, :content, :text, limit: 2147483647
change_column :notes, :st_diff, :text, limit: 2147483647 change_column :notes, :st_diff, :text, limit: 2147483647
change_column :events, :data, :text, limit: 2147483647
end end
end end
...@@ -8,7 +8,7 @@ We do not recommend using MySQL due to various issues. For example, case [(in)se ...@@ -8,7 +8,7 @@ We do not recommend using MySQL due to various issues. For example, case [(in)se
# Install the database packages # Install the database packages
sudo apt-get install -y mysql-server mysql-client libmysqlclient-dev sudo apt-get install -y mysql-server mysql-client libmysqlclient-dev
# Ensure you have MySQL version 5.5.14 or later # Ensure you have MySQL version 5.5.14 or later
mysql --version mysql --version
...@@ -31,7 +31,7 @@ We do not recommend using MySQL due to various issues. For example, case [(in)se ...@@ -31,7 +31,7 @@ We do not recommend using MySQL due to various issues. For example, case [(in)se
# Ensure you can use the InnoDB engine which is necessary to support long indexes # Ensure you can use the InnoDB engine which is necessary to support long indexes
# If this fails, check your MySQL config files (e.g. `/etc/mysql/*.cnf`, `/etc/mysql/conf.d/*`) for the setting "innodb = off" # If this fails, check your MySQL config files (e.g. `/etc/mysql/*.cnf`, `/etc/mysql/conf.d/*`) for the setting "innodb = off"
mysql> SET storage_engine=INNODB; mysql> SET storage_engine=INNODB;
# Create the GitLab production database # Create the GitLab production database
mysql> CREATE DATABASE IF NOT EXISTS `gitlabhq_production` DEFAULT CHARACTER SET `utf8` COLLATE `utf8_unicode_ci`; mysql> CREATE DATABASE IF NOT EXISTS `gitlabhq_production` DEFAULT CHARACTER SET `utf8` COLLATE `utf8_unicode_ci`;
...@@ -52,3 +52,25 @@ We do not recommend using MySQL due to various issues. For example, case [(in)se ...@@ -52,3 +52,25 @@ We do not recommend using MySQL due to various issues. For example, case [(in)se
mysql> \q mysql> \q
# You are done installing the database and can go back to the rest of the installation. # You are done installing the database and can go back to the rest of the installation.
## MySQL strings limits
After installation or upgrade, remember to run the `add_limits_mysql` Rake task:
```
bundle exec rake add_limits_mysql
```
The `text` type in MySQL has a different size limit than the `text` type in
PostgreSQL. In MySQL `text` columns are limited to ~65kB, whereas in PostgreSQL
`text` columns are limited up to ~1GB!
The `add_limits_mysql` Rake task converts some important `text` columns in the
GitLab database to `longtext` columns, which can persist values of up to 4GB
(sometimes less if the value contains multibyte characters).
Details can be found in the [PostgreSQL][postgres-text-type] and
[MySQL][mysql-text-types] manuals.
[postgres-text-type]: http://www.postgresql.org/docs/9.1/static/datatype-character.html
[mysql-text-types]: http://dev.mysql.com/doc/refman/5.7/en/string-type-overview.html
...@@ -14,3 +14,4 @@ Depending on the installation method and your GitLab version, there are multiple ...@@ -14,3 +14,4 @@ Depending on the installation method and your GitLab version, there are multiple
## Miscellaneous ## Miscellaneous
- [MySQL to PostgreSQL](mysql_to_postgresql.md) guides you through migrating your database from MySQL to PostgreSQL. - [MySQL to PostgreSQL](mysql_to_postgresql.md) guides you through migrating your database from MySQL to PostgreSQL.
- [MySQL installation guide](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/install/database_mysql.md) contains additional information about configuring GitLab to work with a MySQL database.
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