红帽全球峰会第 18 章 Load balancing on RHOSP
If your OpenShift Container Platform cluster uses Kuryr and was installed on a Red Hat OpenStack Platform (RHOSP) 13 cloud that was later upgraded to RHOSP 16, you can configure it to use the Octavia OVN provider driver.
Kuryr replaces existing load balancers after you change provider drivers. This process results in some downtime.
Prerequisites
-
Install the RHOSP CLI,
openstack. -
Install the OpenShift Container Platform CLI,
oc. Verify that the Octavia OVN driver on RHOSP is enabled.
提示To view a list of available Octavia drivers, on a command line, enter
openstack loadbalancer provider list.The
ovndriver is displayed in the command’s output.
Procedure
To change from the Octavia Amphora provider driver to Octavia OVN:
Open the
kuryr-configConfigMap. On a command line, enter:$ oc -n openshift-kuryr edit cm kuryr-configIn the ConfigMap, delete the line that contains
kuryr-octavia-provider: default. For example:... kind: ConfigMap metadata: annotations: networkoperator.openshift.io/kuryr-octavia-provider: default1 ...- 1
- Delete this line. The cluster will regenerate it with
ovnas the value.
Wait for the Cluster Network Operator to detect the modification and to redeploy the
kuryr-controllerandkuryr-cnipods. This process might take several minutes.Verify that the
kuryr-configConfigMap annotation is present withovnas its value. On a command line, enter:$ oc -n openshift-kuryr edit cm kuryr-configThe
ovnprovider value is displayed in the output:... kind: ConfigMap metadata: annotations: networkoperator.openshift.io/kuryr-octavia-provider: ovn ...Verify that RHOSP recreated its load balancers.
On a command line, enter:
$ openstack loadbalancer list | grep amphoraA single Amphora load balancer is displayed. For example:
a4db683b-2b7b-4988-a582-c39daaad7981 | ostest-7mbj6-kuryr-api-loadbalancer | 84c99c906edd475ba19478a9a6690efd | 172.30.0.1 | ACTIVE | amphoraSearch for
ovnload balancers by entering:$ openstack loadbalancer list | grep ovnThe remaining load balancers of the
ovntype are displayed. For example:2dffe783-98ae-4048-98d0-32aa684664cc | openshift-apiserver-operator/metrics | 84c99c906edd475ba19478a9a6690efd | 172.30.167.119 | ACTIVE | ovn 0b1b2193-251f-4243-af39-2f99b29d18c5 | openshift-etcd/etcd | 84c99c906edd475ba19478a9a6690efd | 172.30.143.226 | ACTIVE | ovn f05b07fc-01b7-4673-bd4d-adaa4391458e | openshift-dns-operator/metrics | 84c99c906edd475ba19478a9a6690efd | 172.30.152.27 | ACTIVE | ovn
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