ulimit

I have been having issues with our new redis server after swapping from Ubuntu 14.04 to 16.04. The configuration of the open files limit using all the guides says to change the /etc/security/limits.conf with the following settings * soft nofile 65535 * hard nofile 65535 root soft nofile 65535 root hard nofile 65535 And also to add to /etc/pam.d/common-session and /etc/pam.d/common-session-noninteractive session required pam_limits.so I have made all of these changes but redis is still starting up with a file limit of 4096 which under production load we quickly reach max connections. After much

My purspose was to set ulimit -n from within a golang program so that I do not have to set it globally but restrict it within the program. Found systemcalls setrlimit and get rlimit for the same. ( http://linux.die.net/man/2/setrlimit ) But when I tried a sample program for the same I was getting an error saying invalid argument while setting the value. package main import ( "fmt" "syscall" ) func main() { var rLimit syscall.Rlimit err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit) if err != nil { fmt.Println("Error Getting Rlimit ", err) } fmt.Println(rLimit) rLimit.Max = 999999 rLimit

I run code on linux ubuntu 17.10 public class TestExec { public static void main(String[] args) { try { Process p = Runtime.getRuntime().exec(new String[]{"/bin/sh", "-c", "ulimit", "-n"}); BufferedReader in = new BufferedReader( new InputStreamReader(p.getInputStream())); String line = null; while ((line = in.readLine()) != null) { System.out.println(line); } } catch (IOException e) { e.printStackTrace(); } } } this code returns "unlimited" but whenever I run command from terminal I get 1024. Why those numbers are different? You get the same result if you run the same command from the command

ulimit –a ulimit –n #vi /erc/security/limits.conf ( 修改文件开启的限制 ) # #<domain> <type> <item> <value> # #* soft core 0 #* hard rss 10000 #@student hard nproc 20 #@faculty soft nproc 20 #@faculty hard nproc 50 #ftp hard nproc 0 #@student - maxlogins 4 * soft noproc 10000 （可选） * hard noproc 10000 （可选） * soft nofile 65535 * hard nofile 65535 ( 添加的两行 ) # End of file :wq 保存退出 说明 ： * 代表针对所有用户 noproc 是代表最大进程数 nofile 是代表最大文件打开数 注意： 这个当中的硬限制是实际的限制，而软限制是 warnning 限制，只会做出 warning ； 执行下面的两条命令 ulimit –Hn 65535 ulimit –Sn 65535 最后重启系统才能生效 reboot 在查看 ulimit –n #ulimit –n 65535 已打开文件数限制，已调至最大。 参考： CentOS 6

Fron the terminal I am trying to change the number of file descriptions open and they will not stick. How, from the terminal do I change the ulimit? Per the below, when I run uwsgi from the terminal, fd are at 1024. ubuntu@ubuntu:/tmp$ uwsgi --loop gevent --socket :3031 --wsgi-file /home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbAsyncServers/bottleServer.py --master --async 100 --listen 300 --processes 1 *** Starting uWSGI 1.2.1 (64bit) on [Sat May 12 05:24:25 2012] *** compiled with version: 4.5.2 on 11 May 2012 03:42:53 detected number of CPU cores: 2 current working directory: /tmp