# Upgrading Icinga 2
Upgrading Icinga 2 is usually quite straightforward. Ordinarily the only manual steps involved
are scheme updates for the IDO database.
## Upgrading to v2.8
The default certificate path was changed from `/etc/icinga2/pki` to
`/var/lib/icinga2/certs`.
This applies to Windows clients in the same way: `%ProgramData%\etc\icinga2\pki`
was moved to `%ProgramData%`\var\lib\icinga2\certs`.
The [setup CLI commands](06-distributed-monitoring.md#distributed-monitoring-setup-master) and the
default [ApiListener configuration](06-distributed-monitoring.md#distributed-monitoring-apilistener)
have been adjusted to these paths too.
## Upgrading the MySQL database
If you're upgrading an existing Icinga 2 instance, you should check the
`/usr/share/icinga2-ido-mysql/schema/upgrade` directory for an incremental schema upgrade file.
> **Note**
>
> If there isn't an upgrade file for your current version available, there's nothing to do.
Apply all database schema upgrade files incrementally.
# mysql -u root -p icinga < /usr/share/icinga2-ido-mysql/schema/upgrade/.sql
The Icinga 2 DB IDO module will check for the required database schema version on startup
and generate an error message if not satisfied.
**Example:** You are upgrading Icinga 2 from version `2.0.2` to `2.3.0`. Look into
the *upgrade* directory:
$ ls /usr/share/icinga2-ido-mysql/schema/upgrade/
2.0.2.sql 2.1.0.sql 2.2.0.sql 2.3.0.sql
There are two new upgrade files called `2.1.0.sql`, `2.2.0.sql` and `2.3.0.sql`
which must be applied incrementally to your IDO database.
## Upgrading the PostgreSQL database
If you're updating an existing Icinga 2 instance, you should check the
`/usr/share/icinga2-ido-pgsql/schema/upgrade` directory for an incremental schema upgrade file.
> **Note**
>
> If there isn't an upgrade file for your current version available, there's nothing to do.
Apply all database schema upgrade files incrementally.
# export PGPASSWORD=icinga
# psql -U icinga -d icinga < /usr/share/icinga2-ido-pgsql/schema/upgrade/.sql
The Icinga 2 DB IDO module will check for the required database schema version on startup
and generate an error message if not satisfied.
**Example:** You are upgrading Icinga 2 from version `2.0.2` to `2.3.0`. Look into
the *upgrade* directory:
$ ls /usr/share/icinga2-ido-pgsql/schema/upgrade/
2.0.2.sql 2.1.0.sql 2.2.0.sql 2.3.0.sql
There are two new upgrade files called `2.1.0.sql`, `2.2.0.sql` and `2.3.0.sql`
which must be applied incrementally to your IDO database.