Add examples of managing strimzi-kafka using argocd by kornys · Pull Request #6 · streamshub/streamshub-gitops

kornys · 2026-05-13T10:06:35Z

No description provided.

Signed-off-by: David Kornel <kornys@outlook.com>

alexcreasy

This is too big for me to fully review in one go, I haven't tried to run it. Reading the docs you've written I think this has great utility as a maximal example of what's possible for a full production grade ecosystem, I think we should use it and separately look at some more tightly focussed and simplified tutorials that really sell people on the concept of GitOps.

Frawless · 2026-05-19T10:56:54Z

+The only manual step is installing ArgoCD itself.
+After that, every operator and every Kafka scenario is deployed by applying a single YAML file — the ArgoCD Application.
+
+1. **Install ArgoCD** (manual, one-time) — `kubectl apply -k`


Suggested change

1. **Install ArgoCD** (manual, one-time) — `kubectl apply -k`

1. **Install ArgoCD** (manual, one-time) — `kubectl apply -k <PATH_TO_OVERLAY>`

is probably right command?

Frawless · 2026-05-19T10:59:17Z

+2. **Deploy operators** — one `kubectl apply -f application.yaml` per operator (Strimzi, Keycloak, ESO)
+3. **Deploy scenarios** — one `kubectl apply -f application.yaml` per scenario (basic-kafka, kafka-mirror, kafka-oauth)


the paths are just examples? Because the app files are in specific dirs and it is not clear from the procedure that user has to cd to the dirs before

Frawless · 2026-05-19T11:34:15Z

+
+```bash
+# OpenShift with Streams for Apache Kafka + RHBK
+kubectl apply -f examples/app-of-apps/overlays/openshift/applicationset.yaml


I am thinking about having it as kustomize resource as well if we have overlays here. It is a little bit confusing form my POV

Frawless · 2026-05-19T12:46:39Z

+  source:
+    repoURL: https://charts.external-secrets.io
+    chart: external-secrets
+    targetRevision: 0.17.0


There is a version 2.5.0, maybe we should use it?

Frawless · 2026-05-19T12:46:56Z

+  project: streamshub
+  source:
+    repoURL: https://github.com/streamshub/streamshub-gitops.git
+    # TODO: switch back to HEAD before merge


Just a reminder

Frawless · 2026-05-19T20:08:43Z

+
+These manifests use `kafka.strimzi.io/v1` CRDs and work with both:
+- **Strimzi** 1.0.0+ (community)
+- **Streams for Apache Kafka** 3.2+ (IBM/Red Hat)


Suggested change

- **Streams for Apache Kafka** 3.2+ (IBM/Red Hat)

- **Streams for Apache Kafka** 3.2+ (Red Hat)

Frawless · 2026-05-19T20:25:13Z

+kubectl run kafka-producer -ti --image=quay.io/strimzi/kafka:latest-kafka-4.0.0 --rm=true --restart=Never -n kafka-source -- \
+  bin/kafka-console-producer.sh --bootstrap-server source-kafka-bootstrap:9092 --topic test-topic
+
+kubectl run kafka-consumer -ti --image=quay.io/strimzi/kafka:latest-kafka-4.0.0 --rm=true --restart=Never -n kafka-target -- \
+  bin/kafka-console-consumer.sh --bootstrap-server target-kafka-bootstrap:9092 --topic source.test-topic --from-beginning


Suggested change

kubectl run kafka-producer -ti --image=quay.io/strimzi/kafka:latest-kafka-4.0.0 --rm=true --restart=Never -n kafka-source -- \

bin/kafka-console-producer.sh --bootstrap-server source-kafka-bootstrap:9092 --topic test-topic

kubectl run kafka-consumer -ti --image=quay.io/strimzi/kafka:latest-kafka-4.0.0 --rm=true --restart=Never -n kafka-target -- \

bin/kafka-console-consumer.sh --bootstrap-server target-kafka-bootstrap:9092 --topic source.test-topic --from-beginning

kubectl run kafka-producer -ti --image=quay.io/strimzi/kafka:latest-kafka-4.2.0 --rm=true --restart=Never -n kafka-source -- \

bin/kafka-console-producer.sh --bootstrap-server source-kafka-bootstrap:9092 --topic test-topic

kubectl run kafka-consumer -ti --image=quay.io/strimzi/kafka:latest-kafka-4.2.0 --rm=true --restart=Never -n kafka-target -- \

bin/kafka-console-consumer.sh --bootstrap-server target-kafka-bootstrap:9092 --topic source.test-topic --from-beginning

We have examples with test-clients for Kafka and mentioned in the docs so I wonder if we shouldn't have them here as well

Frawless · 2026-05-19T20:28:46Z

+    config:
+      config.storage.replication.factor: 3
+      offset.storage.replication.factor: 3
+      status.storage.replication.factor: 3


THis might be too strict for scenario with only 3 brokers. I saw that Kafka brokers has few defaults replication configs set to 3 as well. Maybe we should either reduce the replication factor to 2 to ensure that rolling updates won't degrade the cluster or add more brokers.

Frawless · 2026-05-19T20:31:52Z

+    spec:
+      containers:
+        - name: postgresql-db
+          image: quay.io/sclorg/postgresql-15-c9s:latest


maybe we should user postgres 18? This is tested version for Keycloak 26.6

Frawless · 2026-05-19T20:32:28Z

+
+### Kafka (namespace: `kafka-oauth`)
+
+- **Kafka cluster** (`my-cluster`): KRaft mode, Kafka 4.0.0


Suggested change

- **Kafka cluster** (`my-cluster`): KRaft mode, Kafka 4.0.0

- **Kafka cluster** (`my-cluster`): KRaft mode, Kafka 4.2.0

kornys self-assigned this May 13, 2026

kornys added this to StreamsHub Planning May 13, 2026

github-project-automation Bot moved this to Backlog in StreamsHub Planning May 13, 2026

Add examples of managing strimzi-kafka using argocd

f2e1901

Signed-off-by: David Kornel <kornys@outlook.com>

kornys force-pushed the argocd-kafka-examples branch from 227d6fa to f2e1901 Compare May 14, 2026 13:33

Fix structure and add doc

aa64298

Signed-off-by: David Kornel <kornys@outlook.com>

kornys moved this from Backlog to In progress in StreamsHub Planning May 14, 2026

kornys marked this pull request as ready for review May 14, 2026 14:16

alexcreasy approved these changes May 15, 2026

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Frawless self-requested a review May 18, 2026 13:40

Frawless reviewed May 19, 2026

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Add examples of managing strimzi-kafka using argocd#6

Add examples of managing strimzi-kafka using argocd#6
kornys wants to merge 2 commits into
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argocd-kafka-examples

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	1. Install ArgoCD (manual, one-time) — `kubectl apply -k`
	1. Install ArgoCD (manual, one-time) — `kubectl apply -k <PATH_TO_OVERLAY>`

		2. Deploy operators — one `kubectl apply -f application.yaml` per operator (Strimzi, Keycloak, ESO)
		3. Deploy scenarios — one `kubectl apply -f application.yaml` per scenario (basic-kafka, kafka-mirror, kafka-oauth)

	- Streams for Apache Kafka 3.2+ (IBM/Red Hat)
	- Streams for Apache Kafka 3.2+ (Red Hat)


		### Kafka (namespace: `kafka-oauth`)

		- Kafka cluster (`my-cluster`): KRaft mode, Kafka 4.0.0

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