feat: add support for feature gates

agent/roles/manifests/templates/install-config_baremetal_yaml.j2

@@ -21,6 +21,12 @@ arbiter:
 {% if feature_set %}
 featureSet: {{ feature_set }}
 {% endif %}
+{% if feature_gates %}
+featureGates:
+{% for gate in feature_gates.split(',') %}
+- {{ gate }}
+{% endfor %}
+{% endif %}
 controlPlane:
   architecture: {{ goCPUArchitecture }}
   hyperthreading: Enabled

agent/roles/manifests/templates/install-config_vsphere_yaml.j2

@@ -15,6 +15,12 @@ arbiter:
 {% if feature_set %}
 featureSet: {{ feature_set }}
 {% endif %}
+{% if feature_gates %}
+featureGates:
+{% for gate in feature_gates.split(',') %}
+- {{ gate }}
+{% endfor %}
+{% endif %}
 controlPlane:
   architecture: {{ goCPUArchitecture }}
   hyperthreading: Enabled

agent/roles/manifests/templates/install-config_yaml.j2

@@ -15,6 +15,12 @@ arbiter:
 {% if feature_set %}
 featureSet: {{ feature_set }}
 {% endif %}
+{% if feature_gates %}
+featureGates:
+{% for gate in feature_gates.split(',') %}
+- {{ gate }}
+{% endfor %}
+{% endif %}
 controlPlane:
   architecture: {{ goCPUArchitecture }}
   hyperthreading: Enabled

agent/roles/manifests/vars/main.yml

@@ -54,6 +54,7 @@ num_masters: "{{ lookup('env', 'NUM_MASTERS') }}"
 num_workers: "{{ lookup('env', 'NUM_WORKERS') }}"
 num_arbiters: "{{ lookup('env', 'NUM_ARBITERS') }}"
 feature_set: "{{ lookup('env', 'FEATURE_SET') }}"
+feature_gates: "{{ lookup('env', 'FEATURE_GATES') }}"
 num_extra_workers: "{{ lookup('env', 'NUM_EXTRA_WORKERS', default='0') }}"
 no_proxy: "{{ lookup('env', 'AGENT_NO_PROXY') }}"
 platform_type: "{{ lookup('env', 'AGENT_PLATFORM_TYPE') }}"

config_example.sh

@@ -512,6 +512,24 @@ set -x
 #
 #ADDITIONAL_CAPABILITIES=baremetal,Console
 
+# FEATURE_SET -
+# Enable a feature set for the cluster. Feature sets are a collection of features that
+# are enabled together.
+# Default: Undefined (uses the default feature set)
+#
+# For more info see:
+# https://docs.openshift.com/container-platform/latest/nodes/clusters/nodes-cluster-enabling-features.html
+#
+#export FEATURE_SET="TechPreviewNoUpgrade"
+
+# FEATURE_GATES -
+# Enable specific feature gates for the cluster. This should be provided as a
+# comma-separated list of feature gate names as key=value pairs, where value is a boolean of true or false.
+# Default: Undefined
+#
+# Example:
+#export FEATURE_GATES="ExampleFeatureGateA=true,ExampleFeatureGateB=false"
+
 # MASTER_HOSTNAME_FORMAT -
 # Set a custom hostname format for masters. This is a format string that should
 # include one %d field, which will be replaced with the number of the node.

ocp_install_env.sh

@@ -208,6 +208,19 @@ EOF
     fi
 }
 
+function featureGates() {
+    if [[ -n "$FEATURE_GATES" ]]; then
+cat <<EOF
+featureGates:
+EOF
+        for gate in ${FEATURE_GATES//,/ }; do
+cat <<EOF
+- $gate
+EOF
+        done
+    fi
+}
+
 function capabilities_stanza() {
     if [[ -n "$BASELINE_CAPABILITY_SET" ]]; then
 cat <<EOF
@@ -392,6 +405,7 @@ controlPlane:
 $(node_map_to_install_config_fencing_credentials)
 $(arbiter_stanza)
 $(featureSet)
+$(featureGates)
 $(capabilities_stanza)
 platform:
   baremetal: