Red Hat Connectivity Link

Configure storage for rate limiting

To configure a shared redis datastore for limitador so you can persist rate limit counters in a multicluster environment.

Configure Redis storage for rate limiting

To configure persistence for rate limit counters in a multicluster environment, you must configure the connection details for your shared Redis-based datastore. This datastore makes shared rate limit counters for the Limitador Operator component of Connectivity Link persistent.

Important

You must configure connection details for your shared Redis-based datastore on each OpenShift Container Platform cluster that you want to use Connectivity Link for rate limiting.

Prerequisites

You installed Connectivity Link on one or more clusters.
You have a shared Redis-based datastore.
You installed the OpenShift CLI (oc).
You have write access to the OpenShift Container Platform namespaces you need to work with.
You have access to external or on-premise DNS.
You created a Gateway object.
You configured your policies and HTTP routes.

Procedure

Set the following environment variable to your shared Redis-based instance URL:
```
$ export REDIS_URL=rediss://user:xxxxxx@some-redis.com:10340
```
Include the appropriate URI scheme for your environment, for example:
- Secure Redis: rediss://
- Standard Redis: redis://

Create a Secret resource for your Redis URL as follows:

$ oc -n kuadrant-system create secret generic redis-config \
  --from-literal=URL=$REDIS_URL

Update your Limitador custom resource to use the Secret that you created as follows:

$ oc patch limitador limitador --type=merge -n kuadrant-system -p '
spec:
  storage:
    redis:
      configSecretRef:
        name: redis-config
'