写入 panic 日志的位置在哪里？

huangapple
go评论120阅读模式
英文:

where does go write panic logs?

问题

我通过epel在redhat服务器上安装了golang。我正在尝试分析panic日志，但是找不到日志存储的位置。有什么提示吗？/var/log中没有任何迹象。

  1. func main() {
  2.     http.HandleFunc("/", panicRecover(test))
  3.     log.Fatal(http.ListenAndServe(":80", nil))
  4. }
  6. func test() {
  7.     out, err := exec.Command("echo", "something").Output()
  8.     if err != nil {
  9.         log.Panic(err)
  10.     }
  11. }
  13. func panicRecover(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
  14.     return func(w http.ResponseWriter, r *http.Request) {
  15.         defer func() {
  16.             if r := recover(); r != nil {
  17.                 log.Printf("PANIC RECOVERED:%s\n", r)
  18.             }
  19.         }()
  20.         f(w, r)
  21.     }
  22. }

以上是你提供的代码。

英文:

I installed golang on a redhat server through epel. I'm trying to analyze the panic logs but I can't find where the logs are stored. Any hint ? There is no trace in /var/log

  1.       func main() {
  2.         
  3.         	http.HandleFunc("/", panicRecover(test))
  4.         	log.Fatal(http.ListenAndServe(":80", nil))
  5.         }
  6.         
  9.     func test(){
  10.         out, err := exec.Command("echo ", "something").Output()
  11.         	if err != nil {
  12.         		log.Panic(err)
  13.         
  14.         	}
  15.     }
  18. func panicRecover(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
  19. 	return func(w http.ResponseWriter, r *http.Request) {
  20. 		defer func() {
  21. 			if r := recover(); r != nil {
  22. 				log.Printf("PANIC RECOVERED:%s\n", r)
  23. 			}
  24. 		}()
  25. 		f(w, r)
  26. 	}

答案1

得分: 8

stderr。

例如，

  1. package main
  3. import "log"
  5. func main() {
  6.     log.Panic("log.Panic to stderr")
  7. }
  10. $ go run panic.go 2>stderr.txt

stderr.txt 文件：

<!-- language: none -->

  1. 2014/06/09 00:30:54 log.Panic to stderr
  2. panic: log.Panic to stderr
  4. goroutine 16 [running]:
  5. runtime.panic(0x497180, 0xc2080001a0)
  6.     /home/peter/go/src/pkg/runtime/panic.c:279 +0xf5
  7. log.Panic(0x7f88770fff20, 0x1, 0x1)
  8.     /home/peter/go/src/pkg/log/log.go:307 +0xb6
  9. main.main()
  10.     /home/peter/gopath/src/so/panic.go:6 +0xa7
  12. goroutine 17 [runnable]:
  13. runtime.MHeap_Scavenger()
  14.     /home/peter/go/src/pkg/runtime/mheap.c:507
  15. runtime.goexit()
  16.     /home/peter/go/src/pkg/runtime/proc.c:1445
  18. goroutine 18 [runnable]:
  19. bgsweep()
  20.     /home/peter/go/src/pkg/runtime/mgc0.c:1976
  21. runtime.goexit()
  22.     /home/peter/go/src/pkg/runtime/proc.c:1445
  24. goroutine 19 [runnable]:
  25. runfinq()
  26.     /home/peter/go/src/pkg/runtime/mgc0.c:2606
  27. runtime.goexit()
  28.     /home/peter/go/src/pkg/runtime/proc.c:1445
  29. exit status 2
英文:

To stderr.

For example,

  1. package main
  3. import &quot;log&quot;
  5. func main() {
  6. 	log.Panic(&quot;log.Panic to stderr&quot;)
  7. }
  10. $ go run panic.go 2&gt;stderr.txt

stderr.txt File:

<!-- language: none -->

  1. 2014/06/09 00:30:54 log.Panic to stderr
  2. panic: log.Panic to stderr
  4. goroutine 16 [running]:
  5. runtime.panic(0x497180, 0xc2080001a0)
  6.     /home/peter/go/src/pkg/runtime/panic.c:279 +0xf5
  7. log.Panic(0x7f88770fff20, 0x1, 0x1)
  8.     /home/peter/go/src/pkg/log/log.go:307 +0xb6
  9. main.main()
  10.     /home/peter/gopath/src/so/panic.go:6 +0xa7
  12. goroutine 17 [runnable]:
  13. runtime.MHeap_Scavenger()
  14.     /home/peter/go/src/pkg/runtime/mheap.c:507
  15. runtime.goexit()
  16.     /home/peter/go/src/pkg/runtime/proc.c:1445
  18. goroutine 18 [runnable]:
  19. bgsweep()
  20.     /home/peter/go/src/pkg/runtime/mgc0.c:1976
  21. runtime.goexit()
  22.     /home/peter/go/src/pkg/runtime/proc.c:1445
  24. goroutine 19 [runnable]:
  25. runfinq()
  26.     /home/peter/go/src/pkg/runtime/mgc0.c:2606
  27. runtime.goexit()
  28.     /home/peter/go/src/pkg/runtime/proc.c:1445
  29. exit status 2

huangapple
  • 本文由 发表于 2014年6月9日 12:06:09
  • 转载请务必保留本文链接：https://go.coder-hub.com/24113527.html
  • go
  • logging
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