DiskPressure使节点崩溃 [英] DiskPressure crashing the node

问题描述

DiskPressure的真正含义是什么，以及在容器创建过程中如何避免kubernetes？

What does DiskPressure really means and how it can be avoided in kubernetes during container creation?

看起来，当我在节点上创建一个新的容器时，它是由于压力而崩溃整个节点...

Seemingly when I creating a new container on a node there is a high chance that it is crashing the whole node because of the pressure...

推荐答案

从 documentation ，你会发现 DiskPressure 引发了当：

From the documentation you'll find that DiskPressure raises when:

节点的根文件系统或映像文件系统上的可用磁盘空间和inode满足驱逐阈值

Available disk space and inodes on either the node’s root filesytem or image filesystem has satisfied an eviction threshold

每当发生这些问题时，了解节点的条件有点重要（留下多少空间/ inode，...），并了解相关容器图像很重要。这可以通过一些基本的系统监控来完成（请参阅资源使用监控）。

Learning about the conditions of your nodes whenever these issues occur is somewhat important (how much space/inodes are left, ...) and also learning about the related container images is important. This can be done with some basic system monitoring (see the Resource Usage Monitoring).

一旦知道了这些条件，就应该考虑调整 - low-diskspace-threshold-mb ， - image-gc-high-threshold 和 - image-gc-low-threshold 您的参数 kubelet ，这样就可以有足够的空间进行正常的操作，或者考虑为你的节点提供更多的空间，取决于要求。

Once you know about the conditions, you should consider to adjust the --low-diskspace-threshold-mb, --image-gc-high-threshold and --image-gc-low-threshold parameters of you kubelet, so that there's always enough space for normal operation, or consider to provision more space for you nodes, depending on the requirements.

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