docker_pprof.md

docker_pprof.md

离线环境来从现场获取docker的pprof信息步骤

获取go的镜像

while read img;
  do docker run --rm --entrypoint go $img version 2>/dev/null | grep -qw version && { echo $img;break; }; 
done < <(docker images --format '{{.Repository}}:{{.Tag}}')

转发docker的sock成tcp

socat  -d -d TCP-LISTEN:8081,fork,bind=0.0.0.0 UNIX:/var/run/docker.sock
socat  -d -d TCP-LISTEN:18081,fork,bind=0.0.0.0 TCP4:1.1.1.1:30000

镜像起容器获取pprof文件

go tool pprof http://1x.xxx.45.162:8080/debug/pprof/goroutine

# 或者
curl -s  http://1x.xxx.45.162:8080/debug/pprof/goroutine > test.goroutine
curl -s  http://1x.xxx.45.162:8080/debug/pprof/heap

# 然后把`test.goroutine`拿回来转换成pdf
yum install -y graphviz
go tool pprof --pdf test.goroutine > goroutine.pdf

go tool pprof -http=0.0.0.0:8080 test.goroutine

other:

• https://segmentfault.com/a/1190000016412013

curl http://192.168.111.2:8001/debug/pprof/ ​

output:

Count	Profile
4524	allocs
0	block
0	cmdline
1947	goroutine
4524	heap
0	mutex
0	profile
10	threadcreate
0	trace

https://www.cnblogs.com/qcrao-2018/p/11832732.html