ci: scale up coredns to 3 replicas to prevent it from being affected …

…by node down test cases

Signed-off-by: Yang Chiu <[email protected]>

pipelines/e2e/scripts/longhorn-setup.sh

@@ -55,6 +55,8 @@ main(){
   install_backupstores
   install_csi_snapshotter
 
+  scale_up_coredns
+
   # msg="failed to get package manager" error="operating systems amzn are not supported"
   if [[ "${TF_VAR_k8s_distro_name}" != "eks" ]] && \
     [[ "${DISTRO}" != "talos" ]]; then

pipelines/utilities/coredns.sh

@@ -0,0 +1,7 @@
+scale_up_coredns(){
+  if [[ "${TF_VAR_k8s_distro_name}" == "rke2" ]]; then
+    kubectl get configmap -n kube-system rke2-coredns-rke2-coredns-autoscaler -oyaml | sed 's/\"min\": 0/\"min\": 3/' | kubectl apply -n kube-system -f -
+  else
+    kubectl patch deployment coredns -n kube-system --type='merge' -p '{"spec": {"replicas": 3}}'
+  fi
+}

test_framework/scripts/longhorn-setup.sh

@@ -6,6 +6,7 @@ source test_framework/scripts/kubeconfig.sh
 source pipelines/utilities/longhorn_manifest.sh
 source pipelines/utilities/longhorn_ui.sh
 source pipelines/utilities/install_metrics_server.sh
+source pipelines/utilities/coredns.sh
 
 # create and clean tmpdir
 TMPDIR="/tmp/longhorn"
@@ -563,6 +564,8 @@ main(){
     enable_mtls
   fi
 
+  scale_up_coredns
+
   # msg="failed to get package manager" error="operating systems amzn are not supported"
   if [[ "${TF_VAR_k8s_distro_name}" != "eks" ]] && \
     [[ "${DISTRO}" != "talos" ]]; then