Techyou labs
文章RSS
评论RSS
登录
真正的爱应该超越生命的长度,心灵的宽度,灵魂的深度
搜索
关于作者
文章分类
Default
Linux/Unix
Database
Cloud
Networking
Security
Programming
最新文章
带你重走 TiDB TPS 提升 1000 倍的性能优化之旅
Unicode 中的 BIDI 双向性算法[转]
在linux中设置优先使用ipv4,而不是ipv6
linux下WPS高分辨率下因字体缩放导致字体发虚的问题
ssh-rsa not in pubkeyacceptedalgorithms问题解答及处理办法 Permission denied (publickey)
在 Ubuntu 22.04 中使用 PipeWire 替换 PulseAudio
MYSQL简单监控指标
deepin-wine6-stable下TIM悄悄崩溃问题
openwrt 设置ipv6地址分配
Redis 实战篇:巧用数据类型实现亿级数据统计
最新评论
renothing: 备注:路由器端优先设置ipv4并不影响客户端的ip...
renothing: 二次反向代理跟你应用程序得处理时间有关系吧?尤其是...
二次反向代理性能很差,怎么优化的?: 我也用nginx 做了个二次反向代理,但是并发连3...
hostyep: 交换链接么?目前每天保持30个左右对口IP,每月都...
yzhkpli: error while loading share...
美肤宝: 感谢分享。。。
lq: 嗯 喜欢弄得点单点
按月归档
March 2023
December 2022
November 2022
September 2022
August 2022
March 2022
January 2022
November 2021
October 2021
September 2021
August 2021
July 2021
June 2021
February 2021
September 2020
May 2020
September 2019
August 2019
July 2019
June 2019
May 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
April 2018
March 2018
December 2017
October 2017
September 2017
August 2017
April 2017
March 2017
February 2017
August 2016
July 2015
November 2014
September 2014
August 2014
July 2014
June 2014
July 2013
April 2013
September 2012
July 2012
May 2012
April 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
June 2009
May 2009
April 2009
March 2009
February 2009
December 2008
November 2008
September 2008
August 2008
July 2008
June 2008
常用标签
Mysql
nginx
mysql优化
linux
debian
Powered by
Typecho)))
Optimized by
EAimTY
基于LXCFS增强docker容器隔离
April 11, 2018
Docker容器由于Linux内核namespace本身还不够完善的现状(例如,没有cgroup namespace,user namespace也是在kernel高版本才开始支持, /dev设备不隔离等),因此docker容器在隔离性方面也存在一些缺陷。例如,在容器内部proc文件系统中可以看到Host宿主机上的proc信息(如:meminfo, cpuinfo,stat, uptime等)。开源项目LXCFS,尝试通过用户态文件系统实现docker容器内的虚拟proc文件系统,增强docker容器的隔离性,减少给用户带来的不便。 ### LXCFS介绍 LXCFS是一个开源的FUSE用户态文件系统,起初是为了更好的在Ubuntu上使用LXC容器而设计开发。LXCFS基于C语言开发,代码托管在github上,目前较多使用在LXC容器中。主要由Ubuntu的工程师提供维护和开发。 #####LXCFS主要提供两个基本功能点: a cgroupfs compatible view for unprivileged containers a set of cgroup-aware files: ``` ├── cgroup │ ├── blkio │ ├── cpu,cpuacct │ ├── cpuset │ ├── devices │ ├── freezer │ ├── hugetlb │ ├── memory │ ├── name=systemd │ ├── net_cls,net_prio │ ├── perf_event │ ├── pids │ └── rdma └── proc ├── cpuinfo ├── diskstats ├── meminfo ├── stat ├── swaps └── uptime ``` 即在容器内部提供一个虚拟的proc文件系统和容器自身的cgroup的目录树。 ###LXCFS安装 for ubuntu ``` sudo add-apt-repository ppa:ubuntu-lxc/lxcfs-stable -y sudo apt-get update sudo apt-get install lxcfs -y ``` 其他版本请参考管网自行编译安装 ###LXCFS与docker结合 创建LXCFS挂载点(如果apt-get安装,则已自动创建并挂载) ``` sudo mkdir -p /var/lib/lxcfs sudo ./lxcfs -s -f -o allow_other /var/lib/lxcfs/ ``` 启动docker容器,挂载lxcfs ``` root@gz-node1:~# docker run -it --rm --name ubuntu --memory=512m --cpuset-cpus=0,1 -v /var/lib/lxcfs/proc/uptime:/proc/uptime:rw -v /var/lib/lxcfs/proc/cpuinfo:/proc/cpuinfo:rw -v /var/lib/lxcfs/proc/stat:/proc/stat -v /var/lib/lxcfs/proc/meminfo:/proc/meminfo -v /var/lib/lxcfs/cgroup/:/cgroup/:rw ubuntu:16.04 free -m WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. total used free shared buff/cache available Mem: 512 1 510 31 0 510 Swap: 0 0 0 ``` 参考: - https://linuxcontainers.org/lxcfs/introduction/ - https://yq.aliyun.com/articles/566208
暂无评论
添加新评论
称呼
Email
网站
取消回复
内容
发表评论