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pbr-tacking-non-snat-and-service-monitor-interval.md

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PBR tracking for non snat, service monitor interval

Table of contents

Overview

  1. Policy Based Routing (PBR) tracking can be enabled for the Cisco APIC service graph created for supporting SNAT feature. One HealthGroup for each node is created, and it is associated with the redirect policy of the SNAT service graph with the internet protocol service level agreement (IPSLA) interval set to 5 seconds. This interval is configurable through the acc provision input file

    net_config:
  service_monitor_interval: 10 # default is 5 seconds

    If the service_monitor_interval is set to zero, PBR tracking is disabled.

  2. PBR tracking can be also be enabled for other Cisco APIC service graphs created for each Kubernetes external service, setting the following configuration in the acc-provision input file:

    net_config:
  pbr_tracking_non_snat: true  #

    If enabled, service_monitoring_interval described earlier applies here as well.

Mechanism

Add following configuration in the acc provision input file:

net_config:
  service_monitor_interval: 10
  pbr_tracking_non_snat: true

Run acc-provision tool on updated acc provision input file to generate new aci_deployment.yaml

acc-provision -c <acc_provision_input_file> -f <flavor> -u <apic_username> -p <apic_password> -o aci_deployment.yaml

Delete old aci_deployment.yaml and wait till all the pods in the aci-containers-system namespace are deleted

$ oc delete -f aci_deployment.yaml
$ oc get pods -n aci-containers-system

Apply newly generated aci_deployment.yaml and wait till all pods in aci-containers-system namespace are running

$ oc apply -f aci_deployment.yaml
$ oc get pods -n aci-containers-system

Verify flags set in aci-containers-config config map:

noiro@oshift3-ext-rtr:~$ oc get cm -n aci-containers-system aci-containers-config -oyaml | less
apiVersion: v1
data:
  controller-config: |-
    {
        "flavor": "openshift-4.13-esx",
        "apic-hosts": [
            "10.30.120.180"
        ],
        "aci-service-monitor-interval": 5,
        "aci-pbr-tracking-non-snat": true,
        ...
        ...

Examples