Handle start errors sync with runc

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

containerd-shim/main.go

@@ -12,15 +12,12 @@ import (
 	"github.com/docker/docker/pkg/term"
 )
 
-var runtimeLog string
-
 func setupLogger() {
 	f, err := os.OpenFile("/tmp/shim.log", os.O_CREATE|os.O_RDWR|os.O_APPEND, 0755)
 	if err != nil {
 		panic(err)
 	}
 	logrus.SetOutput(f)
-	runtimeLog = "/tmp/runtime.log"
 }
 
 // containerd-shim is a small shim that sits in front of a runtime implementation

containerd-shim/process.go

@@ -84,7 +84,11 @@ func (p *process) start() error {
 	if err != nil {
 		return err
 	}
-	args := []string{"--log", runtimeLog}
+	logPath := filepath.Join(cwd, "log.json")
+	args := []string{
+		"--log", logPath,
+		"--log-format", "json",
+	}
 	if p.state.Exec {
 		args = append(args, "exec",
 			"--process", filepath.Join(cwd, "process.json"),
@@ -140,7 +144,6 @@ func (p *process) start() error {
 	}
 	p.containerPid = pid
 	return nil
-
 }
 
 func (p *process) pid() int {