问题排查工具
介绍Cloudpods的问题排查工具
本节介绍有助于调试服务程序的工具和API。
内置API
每个采用Cloudpods服务框架的服务都会自动注册一系列的API，用于获得服务的关键运行指标和状态，方便诊断服务程序问题。下面逐一介绍。
内置状态API
| 请求方法 | API路径 | climc子命令 | 说明 |
|---|---|---|---|
| GET | /stats | api-stats-show | 对应服务的每个API URL的请求统计，累计请求次数，平均请求延时等 |
| GET | /db_stats | db-stats-show | 对应服务的数据库统计，包括最大连接数，活跃连接数等 |
| GET | /worker_stats | worker-stats-show | 对应服务内的goroutine池的worker的统计，包括每个worker的活跃数量，队列长度等 |
| GET | /version | version-show | 服务的版本号 |
Profile API
Cloudpods服务内置了golang的profile工具(https://pkg.go.dev/net/http/pprof)，可以通过调用这些API获得服务的profile数据。
| 请求方法 | API路径 | 对应pprof方法 |
|---|---|---|
| GET | /debug/pprof/ | pprof.Index |
| GET | /debug/pprof/cmdline | pprof.Cmdline |
| GET | /debug/pprof/profile | pprof.Profile |
| GET | /debug/pprof/symbol | pprof.Symbol |
| POST | /debug/pprof/symbol | pprof.Symbol |
| GET | /debug/pprof/trace | pprof.Trace |
从v3.10.4开始，profiling接口默认不启用。如需要开启，请修改对应服务的选项 enable_app_profiling 为 true，并重启服务。
获取调用栈
可以通过给服务进程发送SIGUSR1信号，触发服务进程打印当前调用栈。该方法有助于发现程序Block的函数调用栈，找到阻塞的函数方法。
| 使用场景 | 可能涉及的服务 |
|---|---|
| kvm主机创建, 或相关操作 | region, host, host-deployer |
| kvm镜像相关 | glance |
| vmware主机相关 | region, esxi-agent, host-deployer |
| 其他主机相关 | region |
| 系统运行缓慢 | region, keystone |
| 死锁 | - |
- 日志关键字:
- queue full, task dropped
- stucking for a while
- WorkerManager task has been busy for 1923 cycles…
# 登录控制节点，列出所有服务pod
$ kubectl get pods -n onecloud
NAME READY STATUS RESTARTS AGE
default-ansibleserver-7b5d9857df-qbfbf 1/1 Running 0 10h
default-apigateway-75ddb7464d-xhbbv 2/2 Running 0 10h
default-autoupdate-6fc9d9f9cc-jgfpl 1/1 Running 0 10h
default-baremetal-agent-6bcc88655-ggtxb 1/1 Running 0 10h
default-climc-b8b6b5b86-lx24v 1/1 Running 0 10h
default-cloudevent-759df4fd89-qpmfw 1/1 Running 0 10h
default-cloudid-59f4798789-7sgjb 1/1 Running 0 10h
default-cloudmon-7f9554cc9-vk8ht 1/1 Running 0 10h
default-cloudnet-7dfd5f8485-9lf8v 1/1 Running 0 10h
default-cloudproxy-645774fc44-jjn4n 1/1 Running 0 10h
default-devtool-766dd9b758-qj6z6 1/1 Running 0 10h
default-esxi-agent-569cdff69f-mcs8l 1/1 Running 0 10h
default-etcd-7ldqpxjkm4 1/1 Running 0 96d
default-glance-74df5dbf7f-hx4k9 1/1 Running 0 10h
default-host-8nkh5 3/3 Running 0 10h
default-host-9db2z 3/3 Running 0 10h
default-host-deployer-6f6bx 1/1 Running 0 10h
default-host-deployer-lkn2r 1/1 Running 0 10h
default-host-deployer-tfrd2 1/1 Running 0 10h
default-host-image-72wdn 1/1 Running 13 34d
default-host-image-89rp8 1/1 Running 0 34d
default-host-image-lzgnt 1/1 Running 0 34d
default-host-image-nsvbs 1/1 Running 0 34d
default-host-t42qb 3/3 Running 0 10h
default-influxdb-9465c896b-526t5 1/1 Running 0 96d
default-itsm-fcc57bbf7-w24x2 1/1 Running 0 10h
default-keystone-5f5f9f66d5-6x6j2 1/1 Running 0 10h
default-kubeserver-94b9cc6cb-xdl58 1/1 Running 0 10h
default-logger-7cb764b4c5-884vl 1/1 Running 0 10h
default-meter-68dbd99767-4n9n8 1/1 Running 0 10h
default-monitor-7868d6695f-dwprp 1/1 Running 0 10h
default-notify-67dd949bd4-fpcdf 11/11 Running 0 10h
default-onecloud-service-operator-858f7687ff-f5rtm 1/1 Running 0 10h
default-ovn-north-844bc977-pq28d 1/1 Running 0 96d
default-region-65f4b4445d-lqklc 1/1 Running 0 10h
default-region-dns-js5tc 1/1 Running 0 10h
default-s3gateway-6d57886b6-xsgn7 1/1 Running 0 10h
default-scheduler-69589964c8-br265 1/1 Running 1 10h
default-suggestion-5d4b588449-b6fzk 1/1 Running 0 10h
default-telegraf-6mwjs 2/2 Running 0 9h
default-telegraf-9w9fp 2/2 Running 0 9h
default-telegraf-sfpk7 2/2 Running 0 10h
default-vpcagent-6459584bfc-8wvkl 1/1 Running 0 10h
default-web-849dc55988-bxlws 3/3 Running 1 10h
default-webconsole-75549f45dd-4nn6w 1/1 Running 0 10h
default-yunionagent-hvkzw 1/1 Running 0 10h
default-yunionconf-85bdb759d6-f6fzt 1/1 Running 0 10h
onecloud-operator-c79f98c6c-lndnb 0/1 CrashLoopBackOff 73 10h
# 这里以region服务举例, 查看region pod 日志, 这里需要观察一会，看是否会出现上面的列出的日志关键字
$ kubectl logs -n onecloud default-region-65f4b4445d-lqklc --tail 10 -f
# 另起一个终端，进入到region的pod
$ kubectl exec -it -n onecloud default-region-65f4b4445d-lqklc -- /bin/sh
# 先记录当前服务的版本信息
$ /opt/yunion/bin/region -v
{
"major": "0",
"minor": "0",
"gitVersion": "v3.8.8-20220330.0",
"gitBranch": "release/3.8",
"gitCommit": "8b24ebdac",
"gitTreeState": "dirty",
"buildDate": "2022-03-30T14:53:38Z",
"goVersion": "go1.15.15",
"compiler": "gc",
"platform": "linux/amd64"
}
# 查询当前服务的进程pid, 这里看到region的pid为1, host服务的pid会有所不同
$ ps -elf | grep region
1 root 42:02 /opt/yunion/bin/region --config /etc/yunion/region.conf
782 root 0:00 grep region
# 发送信号`SIGUSR1`到region服务进程，获取进程堆栈信息 kill -s SIGUSR1 <pid>
$ kill -s SIGUSR1 1
# region服务的最新日志会dump堆栈信息
$ kubectl logs -n onecloud default-region-65f4b4445d-lqklc --tail 10 -f
[info 220331 03:30:29 appsrv.(*Application).ServeHTTP(appsrv.go:246)] 9d0MzJpH6aqIdfUKdfMyUK4gNV4= 200 c3ee55 GET /groupguests?admin=true&details=false&filter.0=updated_at.ge%28%270001-01-01+00%3A00%3A00%27%29&filter.1=manager_id.isnullorempty%28%29&filter.2=external_id.isnullorempty%28%29&filter.3=cloud_env%3Donpremise&limit=1024&offset=0&order=asc&order_by.0=updated_at&show_emulated=false&system=true (10.105.87.255:8240:vpcagent) 1.77ms
[info 220331 03:30:29 appsrv.(*Application).ServeHTTP(appsrv.go:246)] 9d0MzJpH6aqIdfUKdfMyUK4gNV4= 200 f7dcf7 GET /groupnetworks?admin=true&details=false&filter.0=updated_at.ge%28%270001-01-01+00%3A00%3A00%27%29&filter.1=manager_id.isnullorempty%28%29&filter.2=external_id.isnullorempty%28%29&filter.3=cloud_env%3Donpremise&limit=1024&offset=0&order=asc&order_by.0=updated_at&show_emulated=false&system=true (10.105.87.255:8240:vpcagent) 1.77ms
[info 220331 03:30:30 appsrv.(*Application).ServeHTTP(appsrv.go:246)] 9d0MzJpH6aqIdfUKdfMyUK4gNV4= 200 3985fa PUT /storages/1b5895d9-3517-4e45-84f0-59db7660d840 (10.40.180.64:44988) 53.49ms
goroutine profile: total 83
9 @ 0x43c425 0x44c58f 0xb5230d 0x472521
# 0xb5230c github.com/go-sql-driver/mysql.(*mysqlConn).startWatcher.func1+0xcc /root/go/src/yunion.io/x/onecloud/vendor/github.com/go-sql-driver/mysql/connection.go:621
8 @ 0x43c425 0x44c58f 0xaac0da 0x472521
# 0xaac0d9 google.golang.org/grpc.newClientStream.func5+0xd9 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/stream.go:318
5 @ 0x43c425 0x40856f 0x4081eb 0x10aab8f 0x472521
# 0x10aab8e yunion.io/x/onecloud/pkg/cloudcommon/etcd.(*SEtcdClient).Watch.func1+0x24e /root/go/src/yunion.io/x/onecloud/pkg/cloudcommon/etcd/etcd.go:332
5 @ 0x43c425 0x44c58f 0x4a385a 0x472521
# 0x4a3859 context.propagateCancel.func1+0xd9 /usr/lib/go/src/context/context.go:279
5 @ 0x43c425 0x44c58f 0xa6e693 0xa6e2b0 0xa6f475 0x4b2087 0xa6f3b2 0xa6f36f 0xa9ddc3 0xa9e9ed 0xa9f35b 0xaa6a4e 0xaac666 0xaa50be 0xaa5d65 0xc662c2 0xd22a5c 0x472521
# 0xa6e692 google.golang.org/grpc/internal/transport.(*recvBufferReader).readClient+0xd2 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/internal/transport/transport.go:186
# 0xa6e2af google.golang.org/grpc/internal/transport.(*recvBufferReader).Read+0x18f /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/internal/transport/transport.go:166
# 0xa6f474 google.golang.org/grpc/internal/transport.(*transportReader).Read+0x54 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/internal/transport/transport.go:479
# 0x4b2086 io.ReadAtLeast+0x86 /usr/lib/go/src/io/io.go:314
# 0xa6f3b1 io.ReadFull+0xd1 /usr/lib/go/src/io/io.go:333
# 0xa6f36e google.golang.org/grpc/internal/transport.(*Stream).Read+0x8e /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/internal/transport/transport.go:463
# 0xa9ddc2 google.golang.org/grpc.(*parser).recvMsg+0x62 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/rpc_util.go:510
# 0xa9e9ec google.golang.org/grpc.recvAndDecompress+0x4c /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/rpc_util.go:641
# 0xa9f35a google.golang.org/grpc.recv+0x9a /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/rpc_util.go:709
# 0xaa6a4d google.golang.org/grpc.(*csAttempt).recvMsg+0xed /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/stream.go:884
# 0xaac665 google.golang.org/grpc.(*clientStream).RecvMsg.func1+0x45 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/stream.go:735
# 0xaa50bd google.golang.org/grpc.(*clientStream).withRetry+0x37d /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/stream.go:589
# 0xaa5d64 google.golang.org/grpc.(*clientStream).RecvMsg+0x104 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/stream.go:734
# 0xc662c1 go.etcd.io/etcd/api/v3/etcdserverpb.(*watchWatchClient).Recv+0x61 /root/go/src/yunion.io/x/onecloud/vendor/go.etcd.io/etcd/api/v3/etcdserverpb/rpc.pb.go:6714
# 0xd22a5b go.etcd.io/etcd/client/v3.(*watchGrpcStream).serveWatchClient+0x5b /root/go/src/yunion.io/x/onecloud/vendor/go.etcd.io/etcd/client/v3/watch.go:757
5 @ 0x43c425 0x44c58f 0xd1fedc 0x472521
# 0xd1fedb go.etcd.io/etcd/client/v3.(*watchGrpcStream).run+0x37b /root/go/src/yunion.io/x/onecloud/vendor/go.etcd.io/etcd/client/v3/watch.go:537
5 @ 0x43c425 0x44c58f 0xd22ea5 0x472521
# 0xd22ea4 go.etcd.io/etcd/client/v3.(*watchGrpcStream).serveSubstream+0x284 /root/go/src/yunion.io/x/onecloud/vendor/go.etcd.io/etcd/client/v3/watch.go:803
3 @ 0x43c425 0x40856f 0x4081ab 0xa95a89 0x472521
# 0xa95a88 google.golang.org/grpc.(*addrConn).resetTransport+0x768 /root/go/src/yunion.io/x/onecloud/vendor/google.golang.org/grpc/clientconn.go:1156
3 @ 0x43c425 0x40856f 0x4081eb 0x10aa8b8 0x472521
# 0x10aa8b7 yunion.io/x/onecloud/pkg/cloudcommon/etcd.(*SEtcdClient).startSession.func1+0x37 /root/go/src/yunion.io/x/onecloud/pkg/cloudcommon/etcd/etcd.go:170
- 将收集到的服务版本信息及堆栈信息发送到 https://github.com/yunionio/cloudpods/issues
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