Docker忽略limits.conf(试图解决“打开文件太多"错误) [英] Docker Ignores limits.conf (trying to solve "too many open files" error)
问题描述
我正在运行一个Web服务器，该服务器正在处理数千个并发Web套接字连接.为此，在Debian linux上(我的基本映像是google/debian:wheezy，在GCE上运行)，其中打开文件的默认数量设置为1000，我通常只是将ulimit设置为所需的数量(64,000) .
I'm running a web server that is handling many thousands of concurrent web socket connections. For this to be possible, on Debian linux (my base image is google/debian:wheezy, running on GCE), where the default number of open files is set to 1000, I usually just set the ulimit to the desired number (64,000).
这非常有效，除了当我对应用程序进行docker化并部署时-我发现docker忽略了限制定义.我已经尝试了以下方法(全部在主机上，而不在容器本身上):
This works out great, except that when I dockerized my application and deployed it - I found out that docker kind of ignores the limit definitions. I have tried the following (all on the host machine, not on the container itself):
MAX=64000
sudo bash -c "echo \"* soft nofile $MAX\" >> /etc/security/limits.conf"
sudo bash -c "echo \"* hard nofile $MAX\" >> /etc/security/limits.conf"
sudo bash -c "echo \"ulimit -c $MAX\" >> /etc/profile"
ulimit -c $MAX
经过一些研究，我发现人们可以通过以下方法解决类似的问题:
After doing some research I found that people were able to solve a similar issue by doing this:
sudo bash -c "echo \"limit nofile 262144 262144\" >> /etc/init/docker.conf"
并重新启动/重新启动docker服务.
and rebooting / restarting the docker service.
但是，以上所有方法均失败:当我的应用在容器内运行时，出现打开文件过多"错误(在没有docker的情况下执行以下操作即可解决此问题).
However, all of the above fail: I am getting the "too many open files" error when my app runs inside the container (doing the following without docker solves the problem).
我试图在容器内运行ulimit -a以获得ulimit设置是否起作用的指示，但是这样做会引发关于ulimit不是PATH一部分的可执行文件的错误.
I have tried to run ulimit -a inside the container to get an indication if the ulimit setup worked, but doing so throws an error about ulimit not being an executable that's a part of the PATH.
有人遇到这个问题和/或可以提出一种使Docker重新认识极限的方法吗?
Anyone ran into this and/or can suggest a way to get docker to recognzie the limits?
推荐答案
我能够通过以下配置来解决此问题:
I was able to mitgiate this issue with the following configuration :
我在docker计算机和主机计算机上使用了ubuntu 14.04 linux.
I used ubuntu 14.04 linux for the docker machine and the host machine.
在主机计算机上，您需要:
- 更新/etc/security/limits.conf以包括:
* - nofile 64000 - 添加到您的/etc/sysctl.conf中:
fs.file-max = 64000 - 重新启动sysctl:sudo sysctl -p
- update the /etc/security/limits.conf to include :
* - nofile 64000 - add to your /etc/sysctl.conf :
fs.file-max = 64000 - restart sysctl : sudo sysctl -p
这篇关于Docker忽略limits.conf(试图解决“打开文件太多"错误)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
