Merge pull request #359 from AkihiroSuda/dev

Consistently remove "U7S_" prefix from all the variables

Author: AkihiroSuda

Dockerfile.d/u7s-entrypoint.sh

@@ -2,7 +2,7 @@
 set -eux -o pipefail
 
 # Append "KUBELET_EXTRA_ARGS=..." in /etc/default/kubelet
-sed -e "s!\(^KUBELET_EXTRA_ARGS=.*\)!\\1 --cloud-provider=external --node-labels=usernetes/host-ip=${U7S_HOST_IP}!" </etc/default/kubelet | sponge /etc/default/kubelet
+sed -e "s!\(^KUBELET_EXTRA_ARGS=.*\)!\\1 --cloud-provider=external --node-labels=usernetes/host-ip=${HOST_IP}!" </etc/default/kubelet | sponge /etc/default/kubelet
 
 # Import control plane hosts from previous boot
 [ -e /etc/hosts.u7s ] && cat /etc/hosts.u7s >>/etc/hosts

Makefile

@@ -1,60 +1,48 @@
 # Run `make help` to show usage
 .DEFAULT_GOAL := help
 
-HOSTNAME ?= $(shell hostname)
-# HOSTNAME is the name of the physical host
-export HOSTNAME := $(HOSTNAME)
-
 # Change ports for different kubernetes services
-PORT_ETCD ?= 2379
-PORT_KUBELET ?= 10250
-PORT_FLANNEL ?= 8472
-PORT_KUBE_APISERVER ?= 6443
-
-export U7S_PORT_ETCD := $(PORT_ETCD)
-export U7S_PORT_KUBELET := $(PORT_KUBELET)
-export U7S_PORT_FLANNEL := $(PORT_FLANNEL)
-export U7S_PORT_KUBE_APISERVER := $(PORT_KUBE_APISERVER)
-
-HOST_IP ?= $(shell ip --json route get 1 | jq -r .[0].prefsrc)
-NODE_NAME ?= u7s-$(HOSTNAME)
-NODE_SUBNET ?= $(shell $(CURDIR)/Makefile.d/node-subnet.sh)
-# U7S_HOST_IP is the IP address of the physical host. Accessible from other hosts.
-export U7S_HOST_IP := $(HOST_IP)
-# U7S_NODE_NAME is the host name of the Kubernetes node running in Rootless Docker.
+export PORT_ETCD ?= 2379
+export PORT_KUBELET ?= 10250
+export PORT_FLANNEL ?= 8472
+export PORT_KUBE_APISERVER ?= 6443
+
+# HOSTNAME is the name of the physical host
+export HOSTNAME ?= $(shell hostname)
+# HOST_IP is the IP address of the physical host. Accessible from other hosts.
+export HOST_IP ?= $(shell ip --json route get 1 | jq -r .[0].prefsrc)
+# NODE_NAME is the host name of the Kubernetes node running in Rootless Docker.
 # Not accessible from other hosts.
-export U7S_NODE_NAME:= $(NODE_NAME)
-# U7S_NODE_NAME is the subnet of the Kubernetes node running in Rootless Docker.
+export NODE_NAME ?= u7s-$(HOSTNAME)
+# NODE_SUBNET is the subnet of the Kubernetes node running in Rootless Docker.
 # Not accessible from other hosts.
-export U7S_NODE_SUBNET := $(NODE_SUBNET)
-# U7S_NODE_IP is the IP address of the Kubernetes node running in Rootless Docker.
+export NODE_SUBNET ?= $(shell $(CURDIR)/Makefile.d/node-subnet.sh)
+# NODE_IP is the IP address of the Kubernetes node running in Rootless Docker.
 # Not accessible from other hosts.
-export U7S_NODE_IP := $(subst .0/24,.100,$(U7S_NODE_SUBNET))
+export NODE_IP := $(subst .0/24,.100,$(NODE_SUBNET))
 
-CONTAINER_ENGINE ?= $(shell $(CURDIR)/Makefile.d/detect-container-engine.sh CONTAINER_ENGINE)
-export CONTAINER_ENGINE := $(CONTAINER_ENGINE)
+export CONTAINER_ENGINE ?= $(shell $(CURDIR)/Makefile.d/detect-container-engine.sh CONTAINER_ENGINE)
 
-CONTAINER_ENGINE_TYPE ?= $(shell $(CURDIR)/Makefile.d/detect-container-engine.sh CONTAINER_ENGINE_TYPE)
-export CONTAINER_ENGINE_TYPE := $(CONTAINER_ENGINE_TYPE)
+export CONTAINER_ENGINE_TYPE ?= $(shell $(CURDIR)/Makefile.d/detect-container-engine.sh CONTAINER_ENGINE_TYPE)
 
 COMPOSE ?= $(shell $(CURDIR)/Makefile.d/detect-container-engine.sh COMPOSE)
 
 NODE_SERVICE_NAME := node
 NODE_SHELL := $(COMPOSE) exec \
-	-e U7S_HOST_IP=$(U7S_HOST_IP) \
-	-e U7S_NODE_NAME=$(U7S_NODE_NAME) \
-	-e U7S_NODE_SUBNET=$(U7S_NODE_SUBNET) \
-	-e U7S_NODE_IP=$(U7S_NODE_IP) \
-	-e U7S_PORT_KUBE_APISERVER=$(U7S_PORT_KUBE_APISERVER) \
-        -e U7S_PORT_FLANNEL=$(U7S_PORT_FLANNEL) \
-        -e U7S_PORT_KUBELET=$(U7S_PORT_KUBELET) \
-        -e U7S_PORT_ETCD=$(U7S_PORT_ETCD) \
+	-e HOST_IP=$(HOST_IP) \
+	-e NODE_NAME=$(NODE_NAME) \
+	-e NODE_SUBNET=$(NODE_SUBNET) \
+	-e NODE_IP=$(NODE_IP) \
+	-e PORT_KUBE_APISERVER=$(PORT_KUBE_APISERVER) \
+	-e PORT_FLANNEL=$(PORT_FLANNEL) \
+	-e PORT_KUBELET=$(PORT_KUBELET) \
+	-e PORT_ETCD=$(PORT_ETCD) \
 	$(NODE_SERVICE_NAME)
 
 ifeq ($(CONTAINER_ENGINE),nerdctl)
 ifneq (,$(wildcard $(XDG_RUNTIME_DIR)/bypass4netnsd.sock))
-	export U7S_B4NN := true
-	export U7S_B4NN_IGNORE_SUBNETS := ["10.96.0.0/16", "10.244.0.0/16", "$(U7S_NODE_SUBNET)"]
+	export BYPASS4NETNS := true
+	export BYPASS4NETNS_IGNORE_SUBNETS := ["10.96.0.0/16", "10.244.0.0/16", "$(NODE_SUBNET)"]
 endif
 endif
 

Makefile.d/install-flannel.sh

@@ -3,10 +3,10 @@ set -eu -o pipefail
 
 # See chart values, 0 indicates default for platform
 # https://github.com/flannel-io/flannel/blob/v0.26.1/chart/kube-flannel/values.yaml
-: "${U7S_PORT_FLANNEL:='0'}"
+: "${PORT_FLANNEL:='0'}"
 
 if ! helm -n kube-flannel list -q | grep flannel; then
 	kubectl create namespace kube-flannel
 	kubectl label --overwrite namespace kube-flannel pod-security.kubernetes.io/enforce=privileged
-	helm install flannel --namespace kube-flannel --set-json flannel.backendPort=${U7S_PORT_FLANNEL} /flannel
+	helm install flannel --namespace kube-flannel --set-json flannel.backendPort=${PORT_FLANNEL} /flannel
 fi

docker-compose.yaml

@@ -1,25 +1,25 @@
 # Use `make up`, not `docker compose up`,
-# as this YAML requires ${U7S_...} variables to be set.
+# as this YAML requires ${...} variables to be set.
 ---
 services:
   node:
     build: .
-    hostname: ${U7S_NODE_NAME}
+    hostname: ${NODE_NAME}
     privileged: true
     restart: always
     networks:
       default:
-        ipv4_address: ${U7S_NODE_IP}
+        ipv4_address: ${NODE_IP}
     ports:
       # <host>:<container>
       # etcd (default: 2379)
-      - ${U7S_PORT_ETCD}:${U7S_PORT_ETCD}
+      - ${PORT_ETCD}:${PORT_ETCD}
       # kube-apiserver (default: 6443)
-      - ${U7S_PORT_KUBE_APISERVER}:${U7S_PORT_KUBE_APISERVER}
+      - ${PORT_KUBE_APISERVER}:${PORT_KUBE_APISERVER}
       # kubelet (default: 10250)
-      - ${U7S_PORT_KUBELET}:${U7S_PORT_KUBELET}
+      - ${PORT_KUBELET}:${PORT_KUBELET}
       # flannel (default: 8472)
-      - ${U7S_PORT_FLANNEL}:${U7S_PORT_FLANNEL}/udp
+      - ${PORT_FLANNEL}:${PORT_FLANNEL}/udp
     volumes:
       - .:/usernetes:ro
       - /boot:/boot:ro
@@ -34,24 +34,24 @@ services:
     working_dir: /usernetes
     environment:
       KUBECONFIG: /etc/kubernetes/admin.conf
-      U7S_HOST_IP: ${U7S_HOST_IP}
+      HOST_IP: ${HOST_IP}
     sysctls:
       - net.ipv4.ip_forward=1
       # In addition, `net.ipv4.conf.default.rp_filter`
       # has to be set to 0 (disabled) or 2 (loose)
       # in the daemon's network namespace.
     annotations:
       # Accelerate network for nerdctl >= 2.0.0-beta.4 with bypass4netns >= 0.4.1
-      "nerdctl/bypass4netns": "${U7S_B4NN:-false}"
+      "nerdctl/bypass4netns": "${BYPASS4NETNS:-false}"
       "nerdctl/bypass4netns-ignore-bind": "true"
-      "nerdctl/bypass4netns-ignore-subnets": "${U7S_B4NN_IGNORE_SUBNETS:-}"
+      "nerdctl/bypass4netns-ignore-subnets": "${BYPASS4NETNS_IGNORE_SUBNETS:-}"
 networks:
   default:
     ipam:
       config:
         # Each of the nodes has to have a different IP.
         # The node IP here is not accessible from other nodes.
-        - subnet: ${U7S_NODE_SUBNET}
+        - subnet: ${NODE_SUBNET}
 volumes:
   node-var: {}
   node-opt: {}

kubeadm-config.yaml

@@ -1,24 +1,24 @@
 apiVersion: kubeadm.k8s.io/v1beta4
 kind: InitConfiguration
 localAPIEndpoint:
-  bindPort: ${U7S_PORT_KUBE_APISERVER}
+  bindPort: ${PORT_KUBE_APISERVER}
 ---
 apiVersion: kubeadm.k8s.io/v1beta4
 kind: ClusterConfiguration
-controlPlaneEndpoint: "${U7S_NODE_NAME}:${U7S_PORT_KUBE_APISERVER}"
+controlPlaneEndpoint: "${NODE_NAME}:${PORT_KUBE_APISERVER}"
 apiServer:
   certSANs:
   - localhost
   - 127.0.0.1
-  - "${U7S_NODE_NAME}"
-  - "${U7S_HOST_IP}"
+  - "${NODE_NAME}"
+  - "${HOST_IP}"
   extraArgs:
   - name: etcd-servers
-    value: https://127.0.0.1:${U7S_PORT_ETCD}
+    value: https://127.0.0.1:${PORT_ETCD}
   - name: advertise-address
-    value: ${U7S_HOST_IP}
+    value: ${HOST_IP}
   - name: secure-port
-    value: "${U7S_PORT_KUBE_APISERVER}"
+    value: "${PORT_KUBE_APISERVER}"
   - name: cloud-provider
     value: external
     # Default: "Hostname,InternalDNS,InternalIP,ExternalDNS,ExternalIP"    
@@ -35,14 +35,14 @@ etcd:
   local:
     extraArgs:
       - name: listen-client-urls
-        value: "https://127.0.0.1:${U7S_PORT_ETCD},https://${U7S_NODE_IP}:${U7S_PORT_ETCD}"
+        value: "https://127.0.0.1:${PORT_ETCD},https://${NODE_IP}:${PORT_ETCD}"
       - name: advertise-client-urls
-        value: https://${U7S_NODE_IP}:${U7S_PORT_ETCD}
+        value: https://${NODE_IP}:${PORT_ETCD}
 ---
 kind: KubeletConfiguration
 apiVersion: kubelet.config.k8s.io/v1beta1
 failSwapOn: false
-port: ${U7S_PORT_KUBELET}
+port: ${PORT_KUBELET}
 featureGates:
   KubeletInUserNamespace: true
 ---