package main import ( "fmt" "io" "log" "net" "os" "os/exec" "path" "time" ) var DOCKER_PATH string = path.Join(os.Getenv("DOCKERPATH"), "docker") // WARNING: this crashTest will 1) crash your host, 2) remove all containers func runDaemon() (*exec.Cmd, error) { os.Remove("/var/run/docker.pid") exec.Command("rm", "-rf", "/var/lib/docker/containers").Run() cmd := exec.Command(DOCKER_PATH, "-d") outPipe, err := cmd.StdoutPipe() if err != nil { return nil, err } errPipe, err := cmd.StderrPipe() if err != nil { return nil, err } if err := cmd.Start(); err != nil { return nil, err } go func() { io.Copy(os.Stdout, outPipe) }() go func() { io.Copy(os.Stderr, errPipe) }() return cmd, nil } func crashTest() error { if err := exec.Command("/bin/bash", "-c", "while true; do true; done").Start(); err != nil { return err } var endpoint string if ep := os.Getenv("TEST_ENDPOINT"); ep == "" { endpoint = "192.168.56.1:7979" } else { endpoint = ep } c := make(chan bool) var conn io.Writer go func() { conn, _ = net.Dial("tcp", endpoint) c <- false }() go func() { time.Sleep(2 * time.Second) c <- true }() <-c restartCount := 0 totalTestCount := 1 for { daemon, err := runDaemon() if err != nil { return err } restartCount++ // time.Sleep(5000 * time.Millisecond) var stop bool go func() error { stop = false for i := 0; i < 100 && !stop; { func() error { cmd := exec.Command(DOCKER_PATH, "run", "base", "echo", fmt.Sprintf("%d", totalTestCount)) i++ totalTestCount++ outPipe, err := cmd.StdoutPipe() if err != nil { return err } inPipe, err := cmd.StdinPipe() if err != nil { return err } if err := cmd.Start(); err != nil { return err } if conn != nil { go io.Copy(conn, outPipe) } // Expecting error, do not check inPipe.Write([]byte("hello world!!!!!\n")) go inPipe.Write([]byte("hello world!!!!!\n")) go inPipe.Write([]byte("hello world!!!!!\n")) inPipe.Close() if err := cmd.Wait(); err != nil { return err } outPipe.Close() return nil }() } return nil }() time.Sleep(20 * time.Second) stop = true if err := daemon.Process.Kill(); err != nil { return err } } return nil } func main() { if err := crashTest(); err != nil { log.Println(err) } }