cgroups

Allocate or Limit resource for pods in Kubernetes?

由 ε祈祈猫儿з 提交于 2019-12-03 06:17:16
问题 The resource limit of Pod has been set as: resource limit cpu: 500m memory: 5Gi and there's 10G mem left on the node. I've created 5 pods in a short time successfully, and the node maybe still have some mem left, e.g. 8G . The mem usage is growing as the time goes on, and reach the limit ( 5G x 5 = 25G > 10G ), then the node will be out of response. In order to ensure the usability, is there a way to set the resource limit on the node? Update The core problem is that pod memory usage does not

Docker操作实践（2）：Docker的安装及架构介绍

由 江枫思渺然 提交于 2019-11-30 10:56:53
上篇我们分享了一下容器的演进，然后用进程隔离、文件隔离、namespace、cgroups、libcontainer的几个角度展开容器的本质，本篇文章会对Docker的版本安装进行讲解并简介Docker的技术架构。 如果你还没看过前面的内容：可以点击 《容器的本质是什么？容器从何而来？》 Docker版本 Docker在1.13之后，采用时间线作为版本号标识。Docker的版本分为社区版（CE）和企业版（EE）。企业版会提供额外的收费服务，比如包括一些经过官方认证的插件、容器等。 社区版又分为三种版本： 稳定版本： stable。一般我们使用此版本。 预发布版： test 待发布版： nightly Docker安装 1.卸载docker 卸载主机上已有的docker版本 2. 安装前准备 配置yum 1. 安装yum工具及devicemapper存储驱动 2. 配置yum yum makecache的过程中，可以看到可以安装使用的包是dockerr-ce-stable版本，也就是repo中默认只开启stable仓库。 此时如果我们需要安装test或nightly版本，可以使用yum-config-manger –enable docker-ce-test开启此仓库。 安装docker 可以使用yum list查看仓库中docker的版本： 1. 安装docker 2.

Linux下离线安装Docker最新版本

由 强颜欢笑 提交于 2019-11-30 00:32:31
一、基础环境 1、操作系统：CentOS 7.3 2、Docker版本：18.06.1 官方下载地址（打不开可能需要科学上网） 3、百度云Docker 18.06.1地址：https://pan.baidu.com/s/1YdN9z72QutPkHBfLq06H1A 密码：dvvh 4、官方参考文档：https://docs.docker.com/install/linux/docker-ce/binaries/#install-static-binaries 二、Docker安装 1、解压 tar -xvf docker-18.06.1-ce.tgz 1 2、将解压出来的docker文件内容移动到 /usr/bin/ 目录下 cp docker/* /usr/bin/ 1 3、将docker注册为service vim /etc/systemd/system/docker.service 1 [Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify # the

How to disable the oom killer in linux? [closed]

由 会有一股神秘感。 提交于 2019-11-29 21:04:59
问题 My current configs are: > cat /proc/sys/vm/panic_on_oom 0 > cat /proc/sys/vm/oom_kill_allocating_task 0 > cat /proc/sys/vm/overcommit_memory 1 but when I run a task, it's killed anyway. > ./test/mem.sh Killed > dmesg | tail -2 [24281.788131] Memory cgroup out of memory: Kill process 10565 (bash) score 1001 or sacrifice child [24281.788133] Killed process 10565 (bash) total-vm:12601088kB, anon-rss:5242544kB, file-rss:64kB Update My tasks are used to scientific computing, which costs many

kubelet fails to get cgroup stats for docker and kubelet services

由 家住魔仙堡 提交于 2019-11-29 01:43:09
I'm running kubernetes on bare-metal Debian (3 masters, 2 workers, PoC for now). I followed k8s-the-hard-way, and I'm running into the following problem on my kubelet: Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service": failed to get container info for "/system.slice/docker.service": unknown container "/system.slice/docker.service" And I have the same message for kubelet.service. I have some files about those cgroups: $ ls /sys/fs/cgroup/systemd

Limit memory on a Docker container doesn't work

由 爱⌒轻易说出口 提交于 2019-11-28 16:50:53
I am running the last version of Docker on top of Ubuntu 13.04 (Raring Ringtail): root@docker:~# docker version Client version: 0.6.6 Go version (client): go1.2rc3 Git commit (client): 6d42040 Server version: 0.6.6 Git commit (server): 6d42040 Go version (server): go1.2rc3 Last stable version: 0.6.6 But when I start the container, root@docker:~# docker run -m=1524288 -i -t ubuntu /bin/bash root@7b09f638871a:/# free -m total used free shared buffers cached Mem: 1992 608 1383 0 30 341 -/+ buffers/cache: 237 1755 Swap: 2047 0 2047 I don't see any limiting from any kind, and my kernel has the

kubelet fails to get cgroup stats for docker and kubelet services

由 这一生的挚爱 提交于 2019-11-27 16:12:11
问题 I'm running kubernetes on bare-metal Debian (3 masters, 2 workers, PoC for now). I followed k8s-the-hard-way, and I'm running into the following problem on my kubelet: Failed to get system container stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service": failed to get cgroup stats for "/system.slice/docker.service": failed to get container info for "/system.slice/docker.service": unknown container "/system.slice/docker.service" And I have the

Setting absolute limits on CPU for Docker containers

由 筅森魡賤 提交于 2019-11-27 15:36:28
问题 I'm trying to set absolute limits on Docker container CPU usage. The CPU shares concept ( docker run -c <shares> ) is relative, but I would like to say something like "let this container use at most 20ms of CPU time every 100ms. The closest answer I can find is a hint from the mailing list on using cpu.cfs_quota_us and cpu.cfs_period_us . How does one use these settings when using docker run ? I don't have a strict requirement for either LXC-backed Docker (e.g. pre0.9) or later versions, just

Limit memory on a Docker container doesn't work

由 守給你的承諾、 提交于 2019-11-27 09:50:27
问题 I am running the last version of Docker on top of Ubuntu 13.04 (Raring Ringtail): root@docker:~# docker version Client version: 0.6.6 Go version (client): go1.2rc3 Git commit (client): 6d42040 Server version: 0.6.6 Git commit (server): 6d42040 Go version (server): go1.2rc3 Last stable version: 0.6.6 But when I start the container, root@docker:~# docker run -m=1524288 -i -t ubuntu /bin/bash root@7b09f638871a:/# free -m total used free shared buffers cached Mem: 1992 608 1383 0 30 341 -/+

Android Process Scheduling

由 爱⌒轻易说出口 提交于 2019-11-27 06:16:32
I am trying to get a better understanding so I can scope the reliability impact from potential interoperability issues when creating an android app/service. I would like to figure out how process priority is determined. The differences in priority between services and activities and if the scheduler treats their priority differently. Basically I'm trying to get a strong understanding of how likely it is that an activity or service is starved by a rogue processes from a different application (or even the linux kernel.) Does anyone have any good links you could recommend... My searches haven't
订阅 cgroups