Updates to use a hardcoded port for the kubeproxy. (Reopening #517) (#518)

* Triggering different build

* Checking if nodes can be listed

* Trigger build

* Resource patching. Extending resources of Kubernetes nodes to include 'fake' GPUs.

* Fixed command to describe nodes

* Kuttl tests for checking if GPUs we added correctly to the nodes

* Fixed namespace issue and node name issue.

* Adding all tests again now that the resource extension passes

* Changed where the extended resources are tested

* Added error checks for 'curl' calls. Rename variables to use lower case.

* Fixed 'if' equal operator

* Reopening PR #517 here to avoid naming issues.

Author: metalcycling

hack/run-e2e-kind.sh

@@ -48,7 +48,6 @@ export KUTTL_OPTIONS=${TEST_KUTTL_OPTIONS}
 export KUTTL_TEST_SUITES=("${ROOT_DIR}/test/kuttl-test.yaml" "${ROOT_DIR}/test/kuttl-test-deployment-03.yaml" "${ROOT_DIR}/test/kuttl-test-deployment-02.yaml" "${ROOT_DIR}/test/kuttl-test-deployment-01.yaml")
 DUMP_LOGS="true"
 
-
 function update_test_host {
 
   local arch="$(go env GOARCH)"
@@ -380,20 +379,25 @@ function extend-resources {
     # This is intended to allow testing of GPU specific features such as histograms.
 
     # Start communication with cluster
-    kubectl proxy > /dev/null 2>&1 &
+    kubectl proxy --port=0 > .port.dat 2>&1 &
     proxy_pid=$!
 
     echo "Starting background proxy connection (pid=${proxy_pid})..."
+    echo "Waiting for proxy process to start."
+    sleep 30
 
-    curl 127.0.0.1:8001 > /dev/null 2>&1
+    kube_proxy_port=$(cat .port.dat | awk '{split($5, substrings, ":"); print substrings[2]}')
+    curl -s 127.0.0.1:${kube_proxy_port} > /dev/null 2>&1
 
     if [[ ! $? -eq 0 ]]; then
         echo "Calling 'kubectl proxy' did not create a successful connection to the kubelet needed to patch the nodes. Exiting."
+        kill -9 ${proxy_pid}
         exit 1
     else
-        echo "Connected to the kubelet for patching the nodes"
+        echo "Connected to the kubelet for patching the nodes. Using port ${kube_proxy_port}."
     fi
 
+    rm .port.dat
 
     # Variables
     resource_name="nvidia.com~1gpu"
@@ -404,17 +408,17 @@ function extend-resources {
     do
         echo "- Patching node (add): ${node_name}"
 
-        patching_status=$(curl --header "Content-Type: application/json-patch+json" \
+        patching_status=$(curl -s --header "Content-Type: application/json-patch+json" \
                                 --request PATCH \
                                 --data '[{"op": "add", "path": "/status/capacity/'${resource_name}'", "value": "'${resource_count}'"}]' \
-                                http://localhost:8001/api/v1/nodes/${node_name}/status | jq -r '.status')
+                                http://localhost:${kube_proxy_port}/api/v1/nodes/${node_name}/status | jq -r '.status')
 
         if [[ ${patching_status} == "Failure" ]]; then
             echo "Failed to patch node '${node_name}' with GPU resources"
             exit 1
         fi
 
-        echo
+        echo "Patching done!"
     done
 
     # Stop communication with cluster