您应该以root用户身份连接到pod来查看跟踪。
使用最新的opensuse/tumbleweed作为广告连播
#suse-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: suse
spec:
containers:
- name: suse
image: opensuse/tumbleweed
command: [ "/bin/bash","-ce","tail -f /dev/null" ]
定期连接到pod并开始该过程
suse:/ # kubectl exec suse -ti -- bash
suse:/ # sleep 100000&
[1] 677
suse:/ # ps aux | grep sleep
root 677 0.0 0.0 2324 764 pts/3 S 14:16 0:00 sleep 100000
检查：
suse:/ # gstack 677 --> empty
suse:/ # gdb
(gdb) attach 677
Attaching to process 677
ptrace: Operation not permitted.
ptrace：不允许操作。
您可以做什么：
1）您可以（像我一样）安装很棒的第三方kubectl-plugins并使用kubectl ssh -u root [pod]来访问root下的pod。
git clone https://github.com/jordanwilson230/kubectl-plugins.git
cd kubectl-plugins
./install-plugins.sh
source ~/.bash_profile
kubectl ssh -u root suse
Connecting...
Pod: suse
Namespace: NONE
User: root
Container: NONE
Command: /bin/sh
If you don't see a command prompt,try pressing enter.
sh-5.0# gstack 677
#0 0x00007f8eeb2a7603 in nanosleep () from /lib64/libc.so.6
#1 0x000055fd4fc88677 in ?? ()
#2 0x000055fd4fc88450 in ?? ()
#3 0x000055fd4fc85500 in ?? ()
#4 0x00007f8eeb201e0b in __libc_start_main () from /lib64/libc.so.6
#5 0x000055fd4fc855da in ?? ()
sh-5.0# gdb
GNU gdb (GDB; openSUSE Tumbleweed) 8.3.1
(gdb) attach 677
Attaching to process 677
Reading symbols from /usr/bin/sleep...
(No debugging symbols found in /usr/bin/sleep)
Reading symbols from /lib64/libc.so.6...
(No debugging symbols found in /lib64/libc.so.6)
Reading symbols from /lib64/ld-linux-x86-64.so.2...
(No debugging symbols found in /lib64/ld-linux-x86-64.so.2)
0x00007f8eeb2a7603 in nanosleep () from /lib64/libc.so.6
Missing separate debuginfos,use: zypper install coreutils-debuginfo-8.31-2.2.x86_64
2）您可以关注@mac answer
-查找它在kubectl上运行的哪个节点get po -n [NAMESPACE] -o wide
-ssh节点
-查找docker容器sudo docker ps | grep [namespace]
-以root用户身份登录到容器sudo docker exec -it -u root [DOCKER ID] / bin / bash
希望有帮助