环境
- CentOS 7
- Openshift Container Platform 3.x
- systemd
问题
- 在节点上启动的 Pod 处于 状态，直到它们被手动删除或主机重启。
ContainerCreating - Pod 处于 状态，直到 OpenShift 节点被手动重启。
Terminating - 部署存在许多问题，因为大多数 deploy pod 已处于 状态超过一天。
ContainerCreating - 使用 启动容器失败，并显示
docker``/usr/bin/docker-current：Error response from daemon: containerd: container did not start before the specified timeout - 我们在 中看到大量以下消息，并且无法在此特定节点上使用 启动任何新容器。
journal``docker
Jun 24 10:10:26 node123 crond[111309]: pam_systemd(crond:session): Failed to create session: Connection timed out
Jun 24 10:10:26 node123 systemd-logind[10714]: Failed to start user slice user-0.slice, ignoring: Connection timed out ((null))
Jun 24 10:10:51 node123 systemd-logind[10714]: Failed to start session scope session-13692.scope: Connection timed out
-
systemd报告一个奇怪的错误消息，之后与 相关的各种操作都失败：DBus
Jun 04 14:03:35 node123 systemd[1]: Failed to propagate agent release message: Operation not supported
- 容器卡在 ContainerCreating 状态，以下信息可在journal 日志中看到。
Jan 01 01:01:01 hostname atomic-openshift-node: I0530 01:01:01.145075 91428 server.go:470] type: 'Warning' reason: 'FailedCreatePodSandBox' Failed create pod sandbox: rpc error: code = Unknown desc = failed to start sandbox container for pod "pod-name": Error response from daemon: oci runtime error: The maximum number of active connections for UID 0 has been reached
决议
请更新这些软件 systemd systemd-219-62.el7_6.9 systemd-219-67
根本原因
当在给定的时间段内创建/删除大量单元时，sd_bus->cookie将溢出，dbus org.freedesktop.systemd1将根本没有响应，因为systemd无法密封dbus1类型的消息。
诊断步骤
- 检查 ，以确认在问题启动时是否发现以下信息：
journalctl
Jun 24 10:10:26 node123 crond[111309]: pam_systemd(crond:session): Failed to create session: Connection timed out
Jun 24 10:10:26 node123 systemd-logind[10714]: Failed to start user slice user-0.slice, ignoring: Connection timed out ((null))
Jun 24 10:10:51 node123 systemd-logind[10714]: Failed to start session scope session-13692.scope: Connection timed out
或/和
Jun 04 14:03:35 node123 systemd[1]: Failed to propagate agent release message: Operation not supported
或/和
Jan 01 01:01:01 hostname atomic-openshift-node: I0530 01:01:01.145075 91428 server.go:470] type: 'Warning' reason: 'FailedCreatePodSandBox' Failed create pod sandbox: rpc error: code = Unknown desc = failed to start sandbox container for pod "pod-name": Error response from daemon: oci runtime error: The maximum number of active connections for UID 0 has been reached
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