通过pprof监控docker
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/symbol
num_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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