怎样通过pprof监控docker

本文主要是介绍怎样通过pprof监控docker，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

debug模式启动docker

$ /usr/bin/docker daemon -D -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock

通过socat端口转发

$ socat -d -d TCP-LISTEN:8080,fork,bind=192.168.1.137 UNIX:/var/run/docker.sock

测试

[root@reg pprof]#  curl -s http://10.39.0.102:8080/debug/vars | jq .
{"cmdline": ["/usr/bin/dockerd","-D"],"memstats": {"Alloc": 13847856,"TotalAlloc": 71577968,"Sys": 27052344,"Lookups": 7829,"Mallocs": 891300,"Frees": 772846,"HeapAlloc": 13847856,"HeapSys": 18743296,"HeapIdle": 1941504,"HeapInuse": 16801792,"HeapReleased": 1810432,"HeapObjects": 118454,"StackInuse": 1179648,"StackSys": 1179648,"MSpanInuse": 225280,"MSpanSys": 262144,"MCacheInuse": 4800,"MCacheSys": 16384,"BuckHashSys": 1460436,"GCSys": 1374208,"OtherSys": 4016228,"NextGC": 25872553,"LastGC": 1512984476111075800,"PauseTotalNs": 29246607,"PauseNs": [317474,1159328,271770,...

获取命令行

$ curl -s http://10.39.0.102:8080/debug/pprof/cmdline
/usr/bin/dockerd-D

通过客户端获取

$ go tool pprof http://10.39.0.102:8080/debug/pprof/profile
Fetching profile from http://10.39.0.102:8080/debug/pprof/profile
Please wait... (30s)
Saved profile in /root/pprof/pprof.dockerd.10.39.0.102:8080.samples.cpu.001.pb.gz
Entering interactive mode 

生成文件转成pdf

$  go tool pprof --pdf pprof.dockerd.10.39.0.102\:8080.samples.cpu.001.pb >call.pdf

get symbol

$ curl -s http://10.39.0.102:8080/debug/pprof/symbolnum_symbols: 1

如果你感兴趣，其它的信息都可以获取到

$ culr -s http://10.39.0.102:8080/debug/pprof/block
$ curl -s http://10.39.0.102:8080/debug/pprof/heap
$ curl -s http://10.39.0.102:8080/debug/pprof/goroutine
$ curl -s http://10.39.0.102:8080/debug/pprof/threadcreate

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