Namespace# pid namespace Trouble Cases PID Namespace 的 Main process 结束 与 zombie child process 问题 情况调查 PID Namespace pid tree zap_pid_ns_processes 卡的问题调查 IO 相关线程 Uninterruptible Sleep (D) 状态 直接原因 Ceph full top 状态 列出所有 D 状态的线程 列表所有 D 状态的内核 statck 参考 PID1 in containers What is PID 1 PID 1 in containers When PID 1 dies do_exit() exit_notify() forget_original_parent() find_child_reaper() zap_pid_ns_processes() Conclusion Network Namespace Fun with network namespaces, part 1 Creating a network namespace and looking inside Getting the loopback interface working Virtual network interfaces: connecting the namespace Connecting the namespace to the outside world with NAT Running a server with port-forwarding Running a second server in a separate namespace Summing up