Red Hat build of MicroShift

Create an OVN-Kubernetes configuration file

MicroShift uses built-in default OVN-Kubernetes values if an OVN-Kubernetes configuration file is not created. To apply custom OVN-Kubernetes values such as pod mtu instead of using built-in defaults, you can copy ovn.yaml.default to /etc/microshift/ovn.yaml and edit the file.

Procedure

To create your ovn.yaml file, run the following command:

$ sudo cp /etc/microshift/ovn.yaml.default /etc/microshift/ovn.yaml

To list the contents of the configuration file you created, run the following command:
```
$ cat /etc/microshift/ovn.yaml
```
Example YAML file with default maximum transmission unit (MTU) value
```
mtu: 1400
```
To customize your configuration, you can change the MTU value. The table that follows provides details:

Table 4. Supported optional OVN-Kubernetes configurations for MicroShift

Field Type Default Description Example

mtu

uint32

auto

MTU value used for the pods

1300

If you change the mtu configuration value in the ovn.yaml file, you must restart the host that {product-title} is running on to apply the updated setting.
Example custom ovn.yaml configuration file
```
mtu: 1300
```