Update ctl init to support env file

configs/cluster.env.default

@@ -1,44 +1,58 @@
-# Required
-KUBERNETES_VERSION=v1.35.3
-NODE_NAME=monok8s-master
-APISERVER_ADVERTISE_ADDRESS=192.168.1.50
+## Host config
+MKS_HOSTNAME=monok8s-master
+MKS_NODE_NAME=monok8s-master
+
+# RJ45 Ports from left to right (interface name inside the OS)
+#   - eth1, eth2, eth0
+MKS_MGMT_IFACE=eth1
+MKS_MGMT_ADDRESS=10.0.0.14/24
+MKS_MGMT_GATEWAY=10.0.0.1
+
+# Space-separated real upstream DNS servers.
+# Do NOT put the cluster DNS Service IP here.
+MKS_DNS_NAMESERVERS="10.0.0.1 1.1.1.1 1.0.0.1"
+
+# Optional. Space-separated.
+MKS_DNS_SEARCH_DOMAINS="lan"
+
+## k8s config
+MKS_KUBERNETES_VERSION=v1.35.3
+MKS_APISERVER_ADVERTISE_ADDRESS=10.0.0.14
 
 # Optional but strongly recommended
-CLUSTER_NAME=monok8s
-POD_SUBNET=10.244.0.0/16
-SERVICE_SUBNET=10.96.0.0/12
-CLUSTER_DOMAIN=cluster.local
+MKS_CLUSTER_NAME=monok8s
+MKS_POD_SUBNET=10.244.0.0/16
+MKS_SERVICE_SUBNET=10.96.0.0/12
+MKS_CLUSTER_DOMAIN=cluster.local
 
 # Bootstrap mode: init, join
-BOOTSTRAP_MODE=init
+MKS_BOOTSTRAP_MODE=init
 
 # For join mode: worker, control-plane
-JOIN_KIND=worker
-API_SERVER_ENDPOINT=
-BOOTSTRAP_TOKEN=
-DISCOVERY_TOKEN_CA_CERT_HASH=
-CONTROL_PLANE_CERT_KEY=
+MKS_JOIN_KIND=worker
+MKS_API_SERVER_ENDPOINT=
+MKS_BOOTSTRAP_TOKEN=
+MKS_DISCOVERY_TOKEN_CA_CERT_HASH=
+MKS_CONTROL_PLANE_CERT_KEY=
 
-# none: Install manually
-# bridge: CRIO's default bridge CNI
-CNI_PLUGIN=none
+# none: install manually
+# default|bridge: CRI-O default bridge CNI
+MKS_CNI_PLUGIN=none
 
 # Node registration metadata
-NODE_LABELS=topology.kubernetes.io/zone=lab,node.kubernetes.io/instance-type=mono-gateway
-NODE_ANNOTATIONS=mono.si/board=ls1046a,mono.si/image-version=dev
+# Comma-separated key=value pairs
+MKS_NODE_LABELS=topology.kubernetes.io/zone=lab,node.kubernetes.io/instance-type=mono-gateway
+MKS_NODE_ANNOTATIONS=mono.si/board=ls1046a,mono.si/image-version=dev
 
 # Optional
 # Extra API server SANs, comma-separated
-SANS=127.0.0.1,localhost,monok8s-master
-
-# Single-node mode: allow workloads on the control plane
-ALLOW_SCHEDULING_ON_CONTROL_PLANE=yes
+MKS_SANS=127.0.0.1,localhost,monok8s-master,10.0.0.14
 
 # CRI-O socket
-CONTAINER_RUNTIME_ENDPOINT=unix:///var/run/crio/crio.sock
+MKS_CONTAINER_RUNTIME_ENDPOINT=unix:///var/run/crio/crio.sock
 
-# Usually leave this alone
-KUBECONFIG_USER_HOME=/root
+# Optional
+MKS_ALLOW_SCHEDULING_ON_CONTROL_PLANE=true
 
 # Emergency override only
-SKIP_IMAGE_CHECK=no
+MKS_SKIP_IMAGE_CHECK=no