Added SINGLE_NODE_CLUSTER="true" configuration to ipi install

ci-operator/config/openshift/installer/openshift-installer-master.yaml

@@ -331,6 +331,10 @@ tests:
   steps:
     cluster_profile: kubevirt
     workflow: openshift-e2e-kubevirt
+- as: e2e-aws-single-node
+  steps:
+    cluster_profile: aws
+    workflow: openshift-e2e-aws-single-node
 zz_generated_metadata:
   branch: master
   org: openshift

ci-operator/jobs/openshift/installer/openshift-installer-master-presubmits.yaml

@@ -517,6 +517,7 @@ presubmits:
     decoration_config:
       skip_cloning: true
     labels:
+      ci-operator.openshift.io/prowgen-controlled: "true"
       pj-rehearse.openshift.io/can-be-rehearsed: "true"
     name: pull-ci-openshift-installer-master-e2e-aws-single-node
     optional: true
@@ -531,18 +532,8 @@ presubmits:
         - --report-username=ci
         - --secret-dir=/usr/local/e2e-aws-single-node-cluster-profile
         - --target=e2e-aws-single-node
-        - --template=/usr/local/e2e-aws-single-node
         command:
         - ci-operator
-        env:
-        - name: CLUSTER_TYPE
-          value: aws
-        - name: CLUSTER_VARIANT
-          value: single-node
-        - name: JOB_NAME_SAFE
-          value: e2e-aws-single-node
-        - name: TEST_COMMAND
-          value: TEST_SUITE=openshift/conformance/parallel run-tests
         image: ci-operator:latest
         imagePullPolicy: Always
         name: ""
@@ -558,9 +549,6 @@ presubmits:
         - mountPath: /secrets/gcs
           name: gcs-credentials
           readOnly: true
-        - mountPath: /usr/local/e2e-aws-single-node
-          name: job-definition
-          subPath: cluster-launch-installer-e2e.yaml
         - mountPath: /etc/pull-secret
           name: pull-secret
           readOnly: true
@@ -580,9 +568,6 @@ presubmits:
           sources:
           - secret:
               name: cluster-secrets-aws
-      - configMap:
-          name: prow-job-cluster-launch-installer-e2e
-        name: job-definition
       - name: pull-secret
         secret:
           secretName: registry-pull-credentials

ci-operator/step-registry/openshift/e2e/aws/single-node/OWNERS

@@ -0,0 +1,7 @@
+approvers:
+- romfreiman
+- eranco74
+- tsorya
+- osherdp
+- yuvigold
+- omertuc

ci-operator/step-registry/openshift/e2e/aws/single-node/openshift-e2e-aws-single-node-workflow.metadata.json

@@ -0,0 +1,13 @@
+{
+	"path": "openshift/e2e/aws/single-node/openshift-e2e-aws-single-node-workflow.yaml",
+	"owners": {
+		"approvers": [
+			"romfreiman",
+			"eranco74",
+			"tsorya",
+			"osherdp",
+			"yuvigold",
+			"omertuc"
+		]
+	}
+}

ci-operator/step-registry/openshift/e2e/aws/single-node/openshift-e2e-aws-single-node-workflow.yaml

@@ -0,0 +1,15 @@
+workflow:
+  as: openshift-e2e-aws-single-node
+  steps:
+    pre:
+    - chain: ipi-conf-aws
+    - ref: single-node-conf
+    - chain: ipi-install
+    test:
+    - ref: openshift-e2e-test
+    post:
+    - chain: gather-network
+    - chain: gather-core-dump
+    - chain: ipi-deprovision
+  documentation: |-
+    The Openshift E2E Single Node workflow executes the common end-to-end test suite with the a single node cluster.

ci-operator/step-registry/single-node/OWNERS

@@ -0,0 +1,7 @@
+approvers:
+- romfreiman
+- eranco74
+- tsorya
+- osherdp
+- yuvigold
+- omertuc

ci-operator/step-registry/single-node/conf/OWNERS

@@ -0,0 +1,7 @@
+approvers:
+- romfreiman
+- eranco74
+- tsorya
+- osherdp
+- yuvigold
+- omertuc

ci-operator/step-registry/single-node/conf/single-node-conf-commands.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+pip3 install pyyaml --user
+python3 -c '
+import yaml
+import sys
+
+input_file = sys.argv[1]
+output_file = sys.argv[2] if len(sys.argv) == 3 else sys.argv[1]  # Output in-place if destination not given
+
+with open(input_file) as f:
+    cfg = yaml.safe_load(f)
+
+# Some workflows do not define controlPlane in install-config.yaml
+if not "controlPlane" in cfg:
+  cfg["controlPlane"] = {}
+
+cfg["controlPlane"]["replicas"] = 1
+
+# Some workflows do not define any compute machine pools in install-config.yaml
+if not "compute" in cfg:
+    cfg["compute"] = [
+        {
+            "name": "worker",
+            "platform": {},
+        }
+    ]
+
+for machine_pool in cfg["compute"]:
+    machine_pool["replicas"] = 0
+
+with open(output_file, "w") as f:
+    yaml.safe_dump(cfg, f)
+' "${SHARED_DIR}/install-config.yaml"

ci-operator/step-registry/single-node/conf/single-node-conf-ref.metadata.json

@@ -0,0 +1,13 @@
+{
+	"path": "single-node/conf/single-node-conf-ref.yaml",
+	"owners": {
+		"approvers": [
+			"romfreiman",
+			"eranco74",
+			"tsorya",
+			"osherdp",
+			"yuvigold",
+			"omertuc"
+		]
+	}
+}

ci-operator/step-registry/single-node/conf/single-node-conf-ref.yaml

@@ -0,0 +1,10 @@
+ref:
+  as: single-node-conf
+  from: installer
+  commands: single-node-conf-commands.sh
+  resources:
+    requests:
+      cpu: 10m
+      memory: 100Mi
+  documentation: |-
+    Modifies install-config.yaml to use a single control-plane node and without any workers.

core-services/template-deprecation/_allowlist.yaml

@@ -595,9 +595,6 @@ templates:
         pull-ci-openshift-installer-master-e2e-aws-rhel8:
           generated: false
           kind: presubmit
-        pull-ci-openshift-installer-master-e2e-aws-single-node:
-          generated: false
-          kind: presubmit
         pull-ci-openshift-installer-release-4.4-e2e-aws-rhel8:
           generated: false
           kind: presubmit