kubernetes某namespace下的所有mysql pod都被删除 - 《kubernetes源码分析》

go程序测试
- go.mod
- main.go
curl模拟
初步结论

409主机的APIServer日志：

https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#delete-collection-pod-v1-core

kubectl删除namespace下的全部pod时，其实走的还是一个一个删，可以从日志中看到：

[root@master ~]# kubectl get pod -n cicd -owide
NAME                         READY   STATUS             RESTARTS   AGE     IP               NODE     NOMINATED NODE   READINESS GATES
b1-1-c8477796f-rnz4w         0/1     CrashLoopBackOff   1          5m26s   10.100.219.77    master   <none>           <none>
b1-10-5bb56df9d7-gsgwt       0/1     CrashLoopBackOff   1          5m26s   10.100.219.110   master   <none>           <none>
b1-11-bd4ffb6cc-dglgz        0/1     CrashLoopBackOff   1          5m26s   10.100.219.89    master   <none>           <none>
b1-2-649c5c8b6f-f7jh2        0/1     CrashLoopBackOff   1          5m26s   10.100.219.112   master   <none>           <none>
b1-3-57f47c8dc7-6mgpp        0/1     CrashLoopBackOff   1          5m26s   10.100.219.95    master   <none>           <none>
b1-4-5bbfcc49d5-7zpx6        0/1     Completed          0          5m26s   10.100.219.70    master   <none>           <none>
b1-5-76b54754df-nd5r4        0/1     CrashLoopBackOff   1          5m26s   10.100.219.113   master   <none>           <none>
b1-6-5b7d8c6577-v797b        0/1     Completed          0          5m26s   10.100.219.87    master   <none>           <none>
b1-8-844477c99c-47xw9        0/1     Completed          0          5m26s   10.100.219.83    master   <none>           <none>
b1-9-789d4ddb77-8lwzd        0/1     CrashLoopBackOff   1          5m26s   10.100.219.111   master   <none>           <none>
busybox-a-86b6df6fb9-k8nhq   0/1     Completed          0          5m25s   10.100.219.71    master   <none>           <none>
[root@master ~]# kubectl delete pod -n cicd --all --v=7 
I0815 22:26:24.013473   26739 loader.go:375] Config loaded from file:  /root/.kube/config
I0815 22:26:24.015065   26739 round_trippers.go:420] GET https://172.21.0.15:6443/apis/middleware.hc.middleware/v1alpha1?timeout=32s
I0815 22:26:24.015078   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.015084   26739 round_trippers.go:431]     Accept: application/json, */*
I0815 22:26:24.015089   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.022127   26739 round_trippers.go:446] Response Status: 503 Service Unavailable in 7 milliseconds
I0815 22:26:24.030746   26739 request.go:1171] body was not decodable (unable to check for Status): couldn't get version/kind; json parse error: json: cannot unmarshal string into Go value of type struct { APIVersion string "json:\"apiVersion,omitempty\""; Kind string "json:\"kind,omitempty\"" }
I0815 22:26:24.030766   26739 cached_discovery.go:78] skipped caching discovery info due to the server is currently unable to handle the request
I0815 22:26:24.031703   26739 round_trippers.go:420] GET https://172.21.0.15:6443/apis/middleware.hc.middleware/v1alpha1?timeout=32s
I0815 22:26:24.031717   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.031723   26739 round_trippers.go:431]     Accept: application/json, */*
I0815 22:26:24.031727   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.032463   26739 round_trippers.go:446] Response Status: 503 Service Unavailable in 0 milliseconds
I0815 22:26:24.039493   26739 request.go:1171] body was not decodable (unable to check for Status): couldn't get version/kind; json parse error: json: cannot unmarshal string into Go value of type struct { APIVersion string "json:\"apiVersion,omitempty\""; Kind string "json:\"kind,omitempty\"" }
I0815 22:26:24.039511   26739 cached_discovery.go:78] skipped caching discovery info due to the server is currently unable to handle the request
I0815 22:26:24.039547   26739 shortcut.go:89] Error loading discovery information: unable to retrieve the complete list of server APIs: middleware.hc.middleware/v1alpha1: the server is currently unable to handle the request
I0815 22:26:24.040969   26739 round_trippers.go:420] GET https://172.21.0.15:6443/apis/middleware.hc.middleware/v1alpha1?timeout=32s
I0815 22:26:24.041021   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.041040   26739 round_trippers.go:431]     Accept: application/json, */*
I0815 22:26:24.041049   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.042800   26739 round_trippers.go:446] Response Status: 503 Service Unavailable in 1 milliseconds
I0815 22:26:24.050095   26739 request.go:1171] body was not decodable (unable to check for Status): couldn't get version/kind; json parse error: json: cannot unmarshal string into Go value of type struct { APIVersion string "json:\"apiVersion,omitempty\""; Kind string "json:\"kind,omitempty\"" }
I0815 22:26:24.050111   26739 cached_discovery.go:78] skipped caching discovery info due to the server is currently unable to handle the request
I0815 22:26:24.051372   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods
I0815 22:26:24.051388   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.051397   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.051405   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.053545   26739 round_trippers.go:446] Response Status: 200 OK in 2 milliseconds
I0815 22:26:24.057180   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-1-c8477796f-rnz4w
I0815 22:26:24.057196   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.057202   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.057206   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.057211   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.063420   26739 round_trippers.go:446] Response Status: 200 OK in 6 milliseconds
pod "b1-1-c8477796f-rnz4w" deleted
I0815 22:26:24.063851   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-10-5bb56df9d7-gsgwt
I0815 22:26:24.063858   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.063863   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.063868   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.063872   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.070894   26739 round_trippers.go:446] Response Status: 200 OK in 7 milliseconds
pod "b1-10-5bb56df9d7-gsgwt" deleted
I0815 22:26:24.071311   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-11-bd4ffb6cc-dglgz
I0815 22:26:24.071318   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.071323   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.071328   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.071332   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.086686   26739 round_trippers.go:446] Response Status: 200 OK in 15 milliseconds
pod "b1-11-bd4ffb6cc-dglgz" deleted
I0815 22:26:24.087133   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-2-649c5c8b6f-f7jh2
I0815 22:26:24.087140   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.087145   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.087150   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.087154   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.114167   26739 round_trippers.go:446] Response Status: 200 OK in 26 milliseconds
pod "b1-2-649c5c8b6f-f7jh2" deleted
I0815 22:26:24.114676   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-3-57f47c8dc7-6mgpp
I0815 22:26:24.114684   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.114689   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.114694   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.114699   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.140298   26739 round_trippers.go:446] Response Status: 200 OK in 25 milliseconds
pod "b1-3-57f47c8dc7-6mgpp" deleted
I0815 22:26:24.140787   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-4-5bbfcc49d5-7zpx6
I0815 22:26:24.140795   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.140801   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.140806   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.140810   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.175724   26739 round_trippers.go:446] Response Status: 200 OK in 34 milliseconds
pod "b1-4-5bbfcc49d5-7zpx6" deleted
I0815 22:26:24.176215   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-5-76b54754df-nd5r4
I0815 22:26:24.176223   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.176228   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.176233   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.176237   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.199651   26739 round_trippers.go:446] Response Status: 200 OK in 23 milliseconds
pod "b1-5-76b54754df-nd5r4" deleted
I0815 22:26:24.200156   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-6-5b7d8c6577-v797b
I0815 22:26:24.200163   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.200169   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.200174   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.200178   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.215455   26739 round_trippers.go:446] Response Status: 200 OK in 15 milliseconds
pod "b1-6-5b7d8c6577-v797b" deleted
I0815 22:26:24.221410   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-8-844477c99c-47xw9
I0815 22:26:24.221433   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.221439   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.221445   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.221450   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.228376   26739 round_trippers.go:446] Response Status: 200 OK in 6 milliseconds
pod "b1-8-844477c99c-47xw9" deleted
I0815 22:26:24.228881   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/b1-9-789d4ddb77-8lwzd
I0815 22:26:24.228894   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.228899   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.228904   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.228908   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.239194   26739 round_trippers.go:446] Response Status: 200 OK in 10 milliseconds
pod "b1-9-789d4ddb77-8lwzd" deleted
I0815 22:26:24.239701   26739 round_trippers.go:420] DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods/busybox-a-86b6df6fb9-k8nhq
I0815 22:26:24.239708   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.239714   26739 round_trippers.go:431]     Content-Type: application/json
I0815 22:26:24.239719   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.239723   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.245485   26739 round_trippers.go:446] Response Status: 200 OK in 5 milliseconds
pod "busybox-a-86b6df6fb9-k8nhq" deleted
I0815 22:26:24.245752   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-1-c8477796f-rnz4w
I0815 22:26:24.245758   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.245764   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.245768   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.250632   26739 round_trippers.go:446] Response Status: 200 OK in 4 milliseconds
I0815 22:26:24.251035   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-1-c8477796f-rnz4w&resourceVersion=29591860&watch=true
I0815 22:26:24.251049   26739 round_trippers.go:427] Request Headers:
I0815 22:26:24.251056   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:24.251064   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:24.251773   26739 round_trippers.go:446] Response Status: 200 OK in 0 milliseconds
I0815 22:26:32.882791   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-10-5bb56df9d7-gsgwt
I0815 22:26:32.882809   26739 round_trippers.go:427] Request Headers:
I0815 22:26:32.882817   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:32.882824   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:32.887905   26739 round_trippers.go:446] Response Status: 200 OK in 5 milliseconds
I0815 22:26:32.888319   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-10-5bb56df9d7-gsgwt&resourceVersion=29592026&watch=true
I0815 22:26:32.888330   26739 round_trippers.go:427] Request Headers:
I0815 22:26:32.888336   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:32.888344   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:32.892324   26739 round_trippers.go:446] Response Status: 200 OK in 3 milliseconds
I0815 22:26:34.082259   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-11-bd4ffb6cc-dglgz
I0815 22:26:34.082279   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.082286   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.082291   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.084077   26739 round_trippers.go:446] Response Status: 200 OK in 1 milliseconds
I0815 22:26:34.084214   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-2-649c5c8b6f-f7jh2
I0815 22:26:34.084224   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.084229   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.084234   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.088244   26739 round_trippers.go:446] Response Status: 200 OK in 4 milliseconds
I0815 22:26:34.088380   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-3-57f47c8dc7-6mgpp
I0815 22:26:34.088388   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.088396   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.088401   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.090553   26739 round_trippers.go:446] Response Status: 200 OK in 2 milliseconds
I0815 22:26:34.090661   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-4-5bbfcc49d5-7zpx6
I0815 22:26:34.090667   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.090672   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.090677   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.094562   26739 round_trippers.go:446] Response Status: 200 OK in 3 milliseconds
I0815 22:26:34.094667   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-5-76b54754df-nd5r4
I0815 22:26:34.094673   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.094678   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.094683   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.096260   26739 round_trippers.go:446] Response Status: 200 OK in 1 milliseconds
I0815 22:26:34.096355   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-6-5b7d8c6577-v797b
I0815 22:26:34.096361   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.096366   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.096371   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.097290   26739 round_trippers.go:446] Response Status: 200 OK in 0 milliseconds
I0815 22:26:34.097390   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-8-844477c99c-47xw9
I0815 22:26:34.097396   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.097401   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.097405   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.098371   26739 round_trippers.go:446] Response Status: 200 OK in 0 milliseconds
I0815 22:26:34.098454   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-9-789d4ddb77-8lwzd
I0815 22:26:34.098460   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.098464   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.098469   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.102150   26739 round_trippers.go:446] Response Status: 200 OK in 3 milliseconds
I0815 22:26:34.102565   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Db1-9-789d4ddb77-8lwzd&resourceVersion=29592032&watch=true
I0815 22:26:34.102574   26739 round_trippers.go:427] Request Headers:
I0815 22:26:34.102579   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:34.102584   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:34.103099   26739 round_trippers.go:446] Response Status: 200 OK in 0 milliseconds
I0815 22:26:35.277055   26739 round_trippers.go:420] GET https://172.21.0.15:6443/api/v1/namespaces/cicd/pods?fieldSelector=metadata.name%3Dbusybox-a-86b6df6fb9-k8nhq
I0815 22:26:35.277073   26739 round_trippers.go:427] Request Headers:
I0815 22:26:35.277079   26739 round_trippers.go:431]     Accept: application/json
I0815 22:26:35.277083   26739 round_trippers.go:431]     User-Agent: kubectl/v1.16.3 (linux/amd64) kubernetes/b3cbbae
I0815 22:26:35.282397   26739 round_trippers.go:446] Response Status: 200 OK in 5 milliseconds
[root@master ~]#

所以，kube-APIServer中无批量删除Delete的日志：

[root@master ~]# kubectl logs  -n kube-system kube-apiserver-master | grep Delete
[root@master ~]# kubectl logs  -n kube-system kube-apiserver-master | grep cicd
[root@master ~]#

go程序测试

pod总数：

[root@master test]# kubectl get pod -n cicd |  wc -l
2011

go.mod


module k8s.io/test

go 1.13

require (
    github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
    github.com/imdario/mergo v0.3.11 // indirect
    golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
    golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e // indirect
    k8s.io/apimachinery v0.17.3
    k8s.io/apiserver v0.17.3 // indirect
    k8s.io/client-go v0.17.3
)

main.go

package main

import (
    "flag"
    "github.com/golang/glog"
    metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    clientset "k8s.io/client-go/kubernetes"
    restclient "k8s.io/client-go/rest"
    "k8s.io/client-go/tools/clientcmd"
)
func main() {
    flag.Parse()
    defer glog.Flush()

    glog.Infof("aaaa")

    clients, err := createClients()
    if err != nil {
        glog.Fatalf("create client err: %v", err)
    }

    err = clients.CoreV1().Pods("cicd").DeleteCollection(&metav1.DeleteOptions{}, metav1.ListOptions{})
    if err != nil {
        glog.Fatalf("delete pod err:", err)
    }
}

type Arg struct {
    Master string
    KubeConfig string
}

func createClients() (*clientset.Clientset, error) {
    kubeconfig, err := clientcmd.BuildConfigFromFlags("", "/root/.kube/config")
    if err != nil {
        return nil, err
    }

    //controller-manager的类型为"application/vnd.kubernetes.protobuf"但在这里有问题,导致同步事件AddFunc、UpdateFunc、delFunc出问题，
    // 不能加,后续细细研究,
    //kubeconfig.ContentConfig.ContentType = s.ContentType
    // Override kubeconfig qps/burst settings from flags
    kubeconfig.QPS = 20
    kubeconfig.Burst = 30
    kubeClient, err := clientset.NewForConfig(restclient.AddUserAgent(kubeconfig, "operator-manager"))
    if err != nil {
        glog.Fatalf("Invalid API configuration: %v", err)
    }
    return kubeClient, nil
}

[root@master test]# kubectl get pod -n cicd | wc -l
2011
[root@master test]#
[root@master test]# go mod vendor
[root@master test]# go build -a -o main
[root@master test]# 
[root@master test]# ll
total 35652
-rw-r--r-- 1 root root      381 Aug 16 08:53 go.mod
-rw-r--r-- 1 root root    33529 Aug 16 08:53 go.sum
-rwxr-xr-x 1 root root 36453104 Aug 16 08:53 main
-rw-r--r-- 1 root root     1313 Aug 16 08:39 main.go
drwxr-xr-x 8 root root     4096 Aug 16 08:39 vendor
[root@master test]# ./main 
F0816 08:54:29.073082    7355 main.go:24] delete pod err:%!(EXTRA *errors.StatusError=Timeout: request did not complete within requested timeout 30s)
goroutine 1 [running]:
github.com/golang/glog.stacks(0xc000268600, 0xc0003f2000, 0x96, 0xeb)
    /root/gopath/pkg/mod/github.com/golang/glog@v0.0.0-20160126235308-23def4e6c14b/glog.go:769 +0xb8
github.com/golang/glog.(*loggingT).output(0x1da49e0, 0xc000000003, 0xc00023ecb0, 0x1d1f369, 0x7, 0x18, 0x0)
    /root/gopath/pkg/mod/github.com/golang/glog@v0.0.0-20160126235308-23def4e6c14b/glog.go:720 +0x372
github.com/golang/glog.(*loggingT).printf(0x1da49e0, 0xc000000003, 0x1327418, 0xf, 0xc0000dff30, 0x1, 0x1)
    /root/gopath/pkg/mod/github.com/golang/glog@v0.0.0-20160126235308-23def4e6c14b/glog.go:655 +0x14b
github.com/golang/glog.Fatalf(...)
    /root/gopath/pkg/mod/github.com/golang/glog@v0.0.0-20160126235308-23def4e6c14b/glog.go:1148
main.main()
    /root/gopath/src/k8s.io/test/main.go:24 +0x2af

执行后，可以看到APIServer中有如下日志：

[root@master test]# kubectl logs -f -n kube-system kube-apiserver-master | grep Delete
I0816 00:54:29.072293       1 trace.go:116] Trace[789103800]: "Delete" url:/api/v1/namespaces/cicd/pods (started: 2020-08-16 00:53:59.071909387 +0000 UTC m=+5740361.632700959) (total time: 30.000366126s):

curl模拟

pod总数：

[root@master test]# kubectl get pod -n cicd |  wc -l
2011

模拟：

[root@master test]# curl -k -X DELETE https://172.21.0.15:6443/api/v1/namespaces/cicd/pods
{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {

  },
  "status": "Failure",
  "message": "Timeout: request did not complete within requested timeout 30s",
  "reason": "Timeout",
  "details": {

  },
  "code": 504
}[root@master test]#kubectl logs  -n kube-system kube-apiserver-master | grep Deletes
^C
[root@master test]# kubectl logs  -n kube-system kube-apiserver-master | grep Delete
I0816 00:54:29.072293       1 trace.go:116] Trace[789103800]: "Delete" url:/api/v1/namespaces/cicd/pods (started: 2020-08-16 00:53:59.071909387 +0000 UTC m=+5740361.632700959) (total time: 30.000366126s):
I0816 01:01:28.789859       1 trace.go:116] Trace[1098869689]: "Delete" url:/api/v1/namespaces/cicd/pods (started: 2020-08-16 01:00:58.789571053 +0000 UTC m=+5740781.350362618) (total time: 30.000266058s):
[root@master test]#

初步结论

APIServer中的日志，在请求超过一定时间才会记录Trace日志。