If you want to override the default values for some config options, then the file available in this repo (etc/ovn_k8s.conf) must be copied to the following locations:
- on Linux:
/etc/openvswitch/ovn_k8s.conf
The following command copies the config file if it is run from inside the repo:
cp etc/ovn_k8s.conf /etc/openvswitch/ovn_k8s.conf
- on Windows:
C:\etc\ovn_k8s.conf
The following PowerShell command copies the config file if is run from inside the repo:
Copy-Item ".\etc\ovn_k8s.conf" -Destination (New-Item "C:\etc" -Type container -Force)
The following config option represents the MTU value which should be used for the overlay networks.
mtu=1400
The following option affects only the gateway nodes. This value is used to track connections that are initiated from the pods so that the reverse connections go back to the pods. This represents the conntrack zone used for the conntrack flow rules.
conntrack_zone=64000
The mode in which ovn-kubernetes should operate. This value can be overlay or underlay. At the moment only overlay networks are supported.
ovn_mode=overlay
The following config values are used for the CNI plugin.
log_path=/var/log/openvswitch/ovn-k8s-cni-overlay.log
unix_socket=/var/run/openvswitch/ovnnb_db.sock
cni_conf_path=/etc/cni/net.d
cni_link_path=/opt/cni/bin/
cni_plugin=ovn-k8s-cni-overlay
OVN and K8S certificates are stored in the following options.
private_key=/etc/openvswitch/ovncontroller-privkey.pem
certificate=/etc/openvswitch/ovncontroller-cert.pem
ca_cert=/etc/openvswitch/ovnnb-ca.cert
k8s_ca_certificate=/etc/openvswitch/k8s-ca.crt
We do not know how OVS core utilities have been installed. If those values are not set, we try to do a best guess for rundir / logdir and choose between "/var/run/openvswitch" / "/var/log/openvswitch" and "/usr/local/var/run/openvswitch" / "/usr/local/var/log/openvswitch"
rundir=
logdir=