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[enterprise-4.11] Manual CP OBSDOCS-339 Configuring Loki to tolerate membership creation failure #73549

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Mar 21, 2024
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[enterprise-4.11] Manual CP OBSDOCS-339 Configuring Loki to tolerate membership creation failure #73549

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3 changes: 2 additions & 1 deletion logging/log_storage/cluster-logging-loki.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ In {logging} documentation, _LokiStack_ refers to the {logging} supported combin
include::modules/logging-creating-new-group-cluster-admin-user-role.adoc[leveloffset=+1]
include::modules/logging-loki-retention.adoc[leveloffset=+1]
include::modules/loki-rate-limit-errors.adoc[leveloffset=+1]
include::modules/logging-loki-memberlist-ip.adoc[leveloffset=+1]

[role="_additional-resources"]
[id="additional-resources_cluster-logging-loki"]
Expand All @@ -19,4 +20,4 @@ include::modules/loki-rate-limit-errors.adoc[leveloffset=+1]
* link:https://grafana.com/docs/loki/latest/logql/[Loki Query Language (LogQL) documentation]
* link:https://loki-operator.dev/docs/howto_connect_grafana.md/[Grafana Dashboard documentation]
//* link:https://loki-operator.dev/docs/api.md/#loki-grafana-com-v1-IngestionLimitSpec[Loki Operator `IngestionLimitSpec` documentation]
* link:https://grafana.com/docs/loki/latest/operations/storage/schema/#changing-the-schema[Loki Storage Schema documentation]
* link:https://grafana.com/docs/loki/latest/operations/storage/schema/#changing-the-schema[Loki Storage Schema documentation]
34 changes: 34 additions & 0 deletions modules/logging-loki-memberlist-ip.adoc
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@@ -0,0 +1,34 @@
// Module included in the following assemblies:
//
// * logging/cluster-logging-loki.adoc

:_mod-docs-content-type: CONCEPT
[id="logging-loki-memberlist-ip_{context}"]
= Configuring Loki to tolerate memberlist creation failure

In an OpenShift cluster, administrators generally use a non-private IP network range. As a result, the LokiStack memberlist configuration fails because, by default, it only uses private IP networks.

As an administrator, you can select the pod network for the memberlist configuration. You can modify the LokiStack CR to use the `podIP` in the `hashRing` spec. To configure the LokiStack CR, use the following command:

[source,terminal]
----
$ oc patch LokiStack logging-loki -n openshift-logging --type=merge -p '{"spec": {"hashRing":{"memberlist":{"instanceAddrType":"podIP","type": "memberlist"}}}}'
----

.Example LokiStack to include `podIP`
[source,yaml]
----
apiVersion: loki.grafana.com/v1
kind: LokiStack
metadata:
name: logging-loki
namespace: openshift-logging
spec:
# ...
hashRing:
type: memberlist
memberlist:
instanceAddrType: podIP
# ...
----