doc: Add setup guide

Author: jpayne3506

docs/feature/swift-v2/setup-guide.md

@@ -0,0 +1,82 @@
+# Swiftv2 Cilium Setup Guide
+
+## Steps
+### Clone repo + checkout branch for *.yamls
+git clone https://github.com/Azure/azure-container-networking.git
+git checkout jpayne3506/conflist-generation < TODO Change before merge >
+
+### Apply cilium config
+export DIR=1.17
+export CILIUM_VERSION_TAG=v1.17.7-250927
+export CILIUM_IMAGE_REGISTRY=mcr.microsoft.com/containernetworking
+kubectl apply -f test/integration/manifests/cilium/v${DIR}/cilium-config/cilium-chained-config.yaml
+
+- Remove `kube-proxy-replacement-healthz-bind-address: "0.0.0.0:10256"` from configmap if kube-proxy is current on nodes
+
+### Apply cilium Agent + Operator
+kubectl apply -f test/integration/manifests/cilium/v${DIR}/cilium-operator/files
+kubectl apply -f test/integration/manifests/cilium/v${DIR}/cilium-agent/files
+
+### Apply/Edit CNS configmap
+kubectl apply -f test/integration/manifests/cnsconfig/azcnichainedciliumconfigmap.yaml
+#### Must have configmap values
+```
+"ProgramSNATIPTables": false
+"CNIConflistScenario": "azurecni-chained-cilium"
+"CNIConflistFilepath": "/etc/cni/net.d/05-azure-chained-cilium.conflist"
+```
+
+### Update CNS image
+Leverage a cns build from branch or use `acnpublic.azurecr.io/azure-cns:v1.7.5-2-g94c36c070` < TODO Change before merge >
+- This will install our chained conflist through the use of `"CNIConflistScenario": "azurecni-chained-cilium"` and it will be installed on the node here `"CNIConflistFilepath": "/etc/cni/net.d/05-azure-chained-cilium.conflist"`
+
+> NOTE: if your current conflist file name starts with `05` then change our previous filename to one with higher priority to ensure that it is consumed on restart. I.e. `03-azure-chained-cilium.conflist`
+
+### If kube-proxy was present
+#### Remove kube-proxy
+> NOTE: Reapply `kube-proxy-replacement-healthz-bind-address: "0.0.0.0:10256"` to cilium configmap if previously removed
+
+This can be done either by editing the node-selectors or deleting the ds. Both work...
+
+#### Restart Cilium
+kubectl rollout restart ds -n kube-system cilium
+
+
+### Quick Summary
+- Apply/Edit Cilium Config with
+  - `cni-chaining-mode: generic-veth`
+  - remove `kube-proxy-replacement-healthz-bind-address`
+    - You do not need to remove if node does not have kube-proxy enabled
+  - If applied before agent is in ready state then no need to restart agent
+- Apply Agent + Operator
+- Apply/Edit CNS config with
+  - "ProgramSNATIPTables": false
+  - "CNIConflistScenario": "azurecni-chained-cilium"
+  - "CNIConflistFilepath": "/etc/cni/net.d/05-azure-chained-cilium.conflist"
+- Update CNS image with build from branch or < TODO IMAGE NAME >
+  - This will install chained conflist
+
+#### If kube-proxy was present
+- Reapply `kube-proxy-replacement-healthz-bind-address: "0.0.0.0:10256"` to cilium configmap
+- Remove Kube-proxy
+- Restart Cilium
+
+
+## Quick Vaildation testing
+- Create pods from deploy
+  - test/integration/manifests/swiftv2/mt-deploy.yaml
+  - Creates `container-*` pods on default namespace
+- Create Cilium Network Policies
+  - test/integration/manifests/cilium/netpol/default-allow.yaml
+  - Will only allow cilium managed endpoints to transmit traffic through default namespace
+- Check Cilium Management with
+  - `kubectl get cep -A`
+  - `kubectl get cnp -A`
+- Check connectivity
+  - exec -it <container-*> -- sh
+  - ip a
+    - look for delegatedNIC IP
+  - ping <IP>
+  - confirm CNP working by attempting to ping coredns pods
+    - should fail if both are being maintained by cilium
+    - confirm with `kubectl get cep -A`