A lot of changes to make 'agentless' and 'port-forward' the mainstream options, now works with containerd. Re-worked README

.goreleaser.yml

@@ -8,7 +8,7 @@ builds:
   - CGO_ENABLED=0
   - GO111MODULE=on
   binary: kubectl-debug
-  main: ./cmd/plugin/main.go
+  main: ./cmd/kubectl-debug/main.go
   goos:
     - freebsd
     - windows
@@ -21,7 +21,7 @@ builds:
     - goos: darwin
       goarch: 386
   ldflags:
-    - -s -w -X 'github.com/aylei/kubectl-debug/version.gitVersion={{.Version}}'
+    - -s -w -X 'github.com/jamestgrant/kubectl-debug/version.gitVersion={{.Version}}'
 checksum:
   name_template: 'checksums.txt'
 snapshot:
@@ -34,12 +34,12 @@ changelog:
     - '^test:'
 brew:
   github:
-    owner: aylei
+    owner: jamestgrant
     name: homebrew-tap
   commit_author:
-    name: aylei
-    email: rayingecho@gmail.com
+    name: jamestgrant
+    email: jamesrgrant@mediakind.com
   install: |
     bin.install "kubectl-debug"
-  homepage: "https://www.github.com/aylei/kubectl-debug"
-  description: "Debug your pod by a new container with every troubleshooting tools pre-installed"
+  homepage: "https://www.github.com/jamestgrant/kubectl-debug"
+  description: "Debug a troublesome container using a dubug container which contains all your favorite troubleshooting tools pre-installed and runs in the same cgroup/ipc/network namespace as your troublesome container"

Dockerfile

@@ -1,8 +1,8 @@
-FROM alpine:3.11.5 as build
+FROM alpine:3.15.0 as build
 
 RUN apk add lxcfs containerd 
 
-FROM alpine:3.11.5
+FROM alpine:3.15.0
 
 COPY --from=build /usr/bin/lxcfs /usr/bin/lxcfs
 COPY --from=build /usr/lib/*fuse* /usr/lib/

Makefile

@@ -1,21 +1,21 @@
-.PHONY: build plugin agent check
+.PHONY: build kubectl-debug-binary debug-agent-binary debug-agent-docker-image check
 
 LDFLAGS = $(shell ./version.sh)
 GOENV  := GO15VENDOREXPERIMENT="1" GO111MODULE=on CGO_ENABLED=0 GOOS=linux GOARCH=amd64
 GO := $(GOENV) go
 
 default: build
 
-build: plugin agent-docker
+build: kubectl-debug-binary debug-agent-docker-image
 
-plugin:
-	GO111MODULE=on CGO_ENABLED=0 go build -ldflags '$(LDFLAGS)' -o kubectl-debug cmd/plugin/main.go
+kubectl-debug-binary:
+	GO111MODULE=on CGO_ENABLED=0 go build -ldflags '$(LDFLAGS)' -o kubectl-debug cmd/kubectl-debug/main.go
 
-agent-docker: agent
-	docker build . -t aylei/debug-agent:latest
+debug-agent-docker-image: debug-agent-binary
+	docker build . -t jamesgrantmediakind/debug-agent:latest
 
-agent:
-	$(GO) build -ldflags '$(LDFLAGS)' -o debug-agent cmd/agent/main.go
+debug-agent-binary:
+	$(GO) build -ldflags '$(LDFLAGS)' -o debug-agent cmd/debug-agent/main.go
 
 check:
 	find . -iname '*.go' -type f | grep -v /vendor/ | xargs gofmt -l

cmd/agent/main.go → cmd/debug-agent/main.go

@@ -2,9 +2,8 @@ package main
 
 import (
 	"flag"
+	"github.com/jamestgrant/kubectl-debug/pkg/debug-agent"
 	"log"
-
-	"github.com/aylei/kubectl-debug/pkg/agent"
 )
 
 func main() {
@@ -13,12 +12,12 @@ func main() {
 	flag.StringVar(&configFile, "config.file", "", "Config file location.")
 	flag.Parse()
 
-	config, err := agent.LoadFile(configFile)
+	config, err := debugagent.LoadFile(configFile)
 	if err != nil {
 		log.Fatalf("error reading config %v", err)
 	}
 
-	server, err := agent.NewServer(config)
+	server, err := debugagent.NewServer(config)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -27,5 +26,5 @@ func main() {
 		log.Fatal(err)
 	}
 
-	log.Println("sever stopped, see you next time!")
+	log.Println("server stopped, see you next time!")
 }

cmd/kubectl-debug/main.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"github.com/jamestgrant/kubectl-debug/pkg/kubectl-debug"
+	"github.com/spf13/pflag"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"os"
+)
+
+func main() {
+	flags := pflag.NewFlagSet("kubectldebug", pflag.ExitOnError)
+	pflag.CommandLine = flags
+
+	// bypass to DebugCmd
+	cmd := kubectldebug.NewDebugCmd(genericclioptions.IOStreams{In: os.Stdin, Out: os.Stdout, ErrOut: os.Stderr})
+	if err := cmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+}