init egress #107

Author: rbo

content/networking/egress-ip.md

@@ -0,0 +1,76 @@
+---
+title: Egress IP
+linktitle:  Egress IP
+description: Egress IP demo
+tags: ['Egress','v4.19']
+---
+# Some information
+
+Official documentation: <https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/ovn-kubernetes_network_plugin/configuring-egress-ips-ovn>
+
+Tested with:
+
+|Component|Version|
+|---|---|
+|OpenShift|v4.19.14|
+
+## Deploy Webserver
+
+TODO: Double check source IP
+
+This webserver is our target to check the source ip adress.
+
+```shell
+oc new-project rbohne-target
+oc apply -k [email protected]:openshift-examples/kustomize/components/simple-http-server
+```
+
+## Prepare cluster
+
+```shell
+% oc get nodes -l node-role.kubernetes.io/worker
+NAME                       STATUS   ROLES    AGE   VERSION
+inf44.coe.muc.redhat.com   Ready    worker   74d   v1.32.5
+ocp1-worker-0              Ready    worker   79d   v1.32.5
+ocp1-worker-1              Ready    worker   79d   v1.32.5
+ocp1-worker-2              Ready    worker   79d   v1.32.5
+
+% oc label node/ocp1-worker-0  k8s.ovn.org/egress-assignable=""
+node/ocp1-worker-0 labeled
+% oc label node/ocp1-worker-1  k8s.ovn.org/egress-assignable=""
+node/ocp1-worker-1 labeled
+% oc label node/ocp1-worker-2  k8s.ovn.org/egress-assignable=""
+node/ocp1-worker-2 labeled
+
+oc apply -f - <<EOF
+heredoc> apiVersion: k8s.ovn.org/v1
+kind: EgressIP
+metadata:
+  name: egress-coe
+spec:
+  egressIPs:
+  - 10.32.105.72
+  - 10.32.105.73
+  namespaceSelector:
+    matchLabels:
+      egress: coe
+heredoc> EOF
+egressip.k8s.ovn.org/egress-coe created
+```
+
+## Deployment
+
+```shell
+oc new-project rbohne-egress
+oc deploy -k simple-nginx...
+oc rsh deployment/simple-nginx
+curl $WEBSERVER
+
+oc label namespace/rbohne-egress egress=coe
+
+```
+
+```log
+10.32.96.44 - - [31/Aug/2025:11:54:00 +0200] "GET / HTTP/1.1" 301 247 "-" "curl/7.76.1"
+10.32.105.72 - - [31/Aug/2025:11:56:31 +0200] "GET / HTTP/1.1" 301 247 "-" "curl/7.76.1"
+```

content/networking/egress-ip/index.md

@@ -243,7 +243,7 @@ nav:
           - OVNKubernetes: networking/network-policy/OVNKubernetes.md
           - OpenShiftSDN: networking/network-policy/OpenShiftSDN.md
       - Router sharding: networking/services-routes/router-sharding.md
-      - Egress IP testing: networking/egress-ip.md
+      - Egress IP: networking/egress-ip/index.md
       - Kubernetes iptables chains: networking/k8s-iptables-chains.md
       - LLDPd: networking/lldpd/index.md