Questions tagged [limits]

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2answers
74 views

How to reserve some disk space (e.g. for backup)

I have a VPS with Wordpress (including storage and database on the same machine). Now I want to make daily backups to an external service (AWS S3): the issue is that first I need to generate a tar of ...
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1answer
22 views

Is it possible to limit OpenSSH maximum number of clients?

I am trying to limit the number of total OpenSSH connections to our Unix systems. At first, I have tried modifying OpenSSH configuration with MaxSessions and MaxStartups options but with no success. ...
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1answer
158 views

systemctl limits - solr complaining

I'm building a solr server (on Ubuntu 18.04, using the repo solr-common and solr-jetty). On startup, solr was reporting that nfile and nproc (1024, 6721 resp) was set too low. I ran systemctl edit ...
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1answer
51 views

What is the command line to backup my /var/www/html files?

what is the best command line to backup my files ? tar -czf /backup/backup.tar.gz /var/www/html or tar -czvf /backup/backup.tar.gz /var/www/html and what are the difrences between this to ? P.S. ...
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0answers
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Systemd limits throw out my service during usage 100% CPU and opening huge file

I'm using Ubuntu 18.04. I created systemd service handler.service which runs about 2000 other processes each of which opens several files and one of them (critical) opens sqlite3 database of 800MB ...
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0answers
33 views

Email limit on SMTP when the sender and receiver are under the same domain

In the company I work at, I have to setup our backend application to send a big amount of emails with updates to a customer (we have permission for that), but without using any 3rd party service apart ...
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1answer
41 views

How much is too much (processes, threads) [closed]

I wonder if I have too much processes and if systemd is getting overloaded. When I run ps aux | wc -l O get "840" If I run ps -e H | wc -l I have around 5k (5128 to be exact), substracting the process ...
2
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1answer
1k views

High CPU usage by WMIPRVSE.EXE process at regular intervals in Windows

I noted eventually at production server with almost 200.000 handle and wmiprvse.exe process with high cpu usage. The server has approximately 200 processes running on Windows server 2012-R2 (...
0
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1answer
796 views

Add LimitNOFILE on haproxy init script

I want to add open files limit to HAProxy 1.8 process to 1024576. But since I use version 1.8, I cannot add LimitNOFILE to init scripts, instead of systemd file. How can I add limitNOFILE to those ...
0
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1answer
633 views

Risks to increasing the IIS 7 --“Maximum Requesting Entity Body Limit”

IIS 7 -- "Maximum Requesting Entity Body Limit" It is certainly easy enough to increase the field "Maximum Requesting Entity Body Limit" in IIS 7. Has anyone encountered risks to increasing this ...
0
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1answer
66 views

debian and yum packages - is there a way we can set max mem % and CPU % limits?

Is there a hard limit we can set on Debian and RPM packages? My thought is to put 20% CPU, 20% Memory and 200 MB Disk Usage hard limits. So the package can play within those limits and not beyond that....
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1answer
508 views

How to current Linux process count (compared to pid_max)

How can I get the number of Linux processes (including lightweight processes)? I want to see how many before I hit the limit dictated by /proc/sys/kernel/pid_max.
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4answers
5k views

systemd, per-user cpu and/or memory limits

There is similar question: Cgroups, limit memory per user, but the solution doesn't work in "modern" systems, where cgroups hierarchy is managed by systemd. Straightforward solution — templating ...
1
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1answer
4k views

Linux : Count Open Files for Process

How can I check how many open files are currently used? Checking on PM2 is just an example: I found the PID: ps aux | grep pm2 | awk '{ print $2 }' Checked that there is a limit of 65536 ...
2
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1answer
1k views

Ubuntu: Unable to change limit for number of open files for root (all users), what could be the reason?

I Have an Ubuntu 16.04 server. When I run as root, ulimit -n I get 1024. When I run it as my user I get 65535. But I want to make sure that all users, including root has the open files limit set to ...
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1answer
207 views

Limits configured but not applied to a daemon

On my CentOS 7, I use cat /proc/<pid>/limits to see the actuel limit set. I got confirmation that this method is totally accurate here because I'm using it on MySQL, which can't dump a specific ...
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1answer
488 views

Limited to 1024 file descriptors [relates to ulimit -n]

I have a problem to setup shoutcastv2 for more than 1000 listeners. I always get the message as follows from shoutcast log. With shoutcast v1, I don´t have this problem. INFO [MAIN] Limited to ...
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0answers
420 views

Force nproc ulimit on non interactive user

I have a script that can be launched n times at the same time through php-fpm. php-fpm pool is set to run under a certain username and I want to limit the number of processes this username can launch. ...
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0answers
166 views

OOM using CRON but not using SHELL

When I start a java program by shell, everything is working well. However if I start the same program with the same command and same user by CRON, I get a java.lang.OutOfMemoryError just after a few ...
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3answers
8k views

How to setup a traffic limit per user on OpenVPN?

I am setting up a VPN server using OpenVPN. The authentication method is the certificate one (different certs for client and server). The VPS has 1TB of traffic monthly. I plan allowing up to 4 ...
2
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1answer
4k views

How do I increase the open file limit on Linux?

I am using CentOS 7. I found out that the current value can be seen using $ ulimit -a (look for open files). Or just $ ulimit -n Then I try to edit these limits by editing the file at $ vim /etc/...
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3answers
3k views

How to use iptables or tc to limit packets per client.

I have some problem network clients which send data too fast. I want to slow them down, using iptables, or possibly tc. I've seen iptables solutions like: sudo iptables -A INPUT -m state --state ...
5
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1answer
904 views

Limit number of concurrent users switching to root account?

This is for Ubuntu 14.04 and Centos 7. I need to limit the number of users actively running as root. i.e. Logged in as root on the CLI. Basically, I want only one user at a time to be able to run ...
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4answers
25k views

Exchange 2010, 2013 and 2016 maximum mailbox size

Which is the maximum size limit for a single mailbox in exchange 2010, 2013 and 2016?
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1answer
501 views

How to change max file limits on a process

Yes I know this question has been asked before and I have tried all the solutions I have seen and none of them work for me. We are running Ubuntu 12, and we have a process that automatically gets ...
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1answer
3k views

How to apply memory limits to all cron jobs?

On a shared server (Debian Jessie), there are some memory limits (and other limits, like number of processes) that apply for a group of users, configured in /etc/security/limits.conf. It seems that ...
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1answer
2k views

Can iptables automatically drop established session after certain seconds?

Can iptables drop automatically an established output session after certain seconds e.g. 30 sec. since its launch? But I want to restrict it only for destination port 80 and 443. The purpose is to ...
0
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1answer
1k views

How to configure the niceness or priority of service started on boot

I want to increase the niceness of an service (decrease the CPU priority) started as an dedicated user or group during the boot process. I'm not able to define the niceness or priority in the /etc/...
0
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1answer
2k views

Nodejs: server doesn't close TCP connections

Facing a problem in the production server running debian (7.0) with nodejs (v0.10.x) cluster where it doesn't close some TCP connections to the clients. This leads to connection drops when connection ...
1
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1answer
357 views

Bootup process does not respect file limits config in Ubuntu Linux

I have open files limit configured in /etc/security/limits.conf * hard nofile 500000 * soft nofile 500000 root hard nofile 500000 root soft nofile ...
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0answers
627 views

How can I limit total quota using squid without authentication for per user

I am having Raspberry Pi running Raspbian, I have configured it as a wifi hotspot using hostapd and dhcpd, I have configured transparent squid proxy server on it. Now all traffic goes through my proxy ...
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1answer
2k views

What is the upper limit (maximum limit ) of WinRM MaxShellsPerUser

For executing the remote powershell commands i need to configure WsMan, In WsMan MaxShellsPerUser specifies the maximum number of concurrent shells that any user can remotely open on the same computer....
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1answer
594 views

nginx and Mysql Server Load limits (depend on Server config)

my server config is Technology: Ivy Bridge Processor: Intel Xeon E3 1245v2 Intel Smart Cache: 8MB Cores: 4 Threads: 8 Frequency: 3.4GHz+ Turbo Boost: 3.8GHz Virtualization: yes ...
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1answer
680 views

Changing ulimit on ubuntu 12.04 Never works

I am working with hadoop and need to change number of open files ulimit -n. I have seen similar questions on stackoverflow and elsewhere and have tried everything in those answers, but it still does ...
2
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1answer
708 views

KVM Raw file size limitations

What are the technical and practical size limitations of raw disk files to be used with KVM? Can I create a 2 or 3TB raw disk file as a data drive for a KVM based windows virtual machine (acutally ...
1
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0answers
144 views

Stack , data and address space limits on an Ubuntu server

I am running an Ubuntu server which has around 5000 users. The users are allowed to SSH in to the system. So in order to cap the memory used up by a process I have capped the address space limits ...
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2answers
4k views

Limit logons per user account in linux.

The current situation is that all users have local configured telnet connections to a red hat server running a simple telnet daemon. I would like to consolidate those locally configured telnet ...
18
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2answers
73k views

/etc/security/limits.conf soft nproc limit appears to be ignored

My MongoDB database was running into problems under load, with the following errors spamming the logs: [initandlisten] pthread_create failed: errno:11 Resource temporarily unavailable [initandlisten] ...
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1answer
161 views

How much memory will this PHP Script need? [duplicate]

I'm trying to use a WordPress Plugin to backup my database and files but it keeps running out of memory. How much memory will this script need to finish and how much should I ask for from my hosting ...
3
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2answers
3k views

FAT32 limit on total length of all filenames in a directory combined?

I've kind of a weird problem on one of our customer's backup harddrives: The harddrive is formatted in FAT32 and last night our backup jobs threw an error on a subdirectory, claiming that it couldn't ...
3
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2answers
3k views

Find out limits of other user

On CentOS 6.4 / 64 bit - how to find the limits of the user "nobody"? Because I can not just su - nobody and call ulimit -a: # id nobody uid=99(nobody) gid=99(nobody) groups=99(nobody) # su - ...
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3answers
38k views

Is there a hard limit to the number of files a directory can have? [duplicate]

Wondering if there is a limit to the number of files that can be stored inside a directory, in CentOS 6. There is one particular directory which could potentially have millions of subdirectories. ...
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1answer
1k views

limit filesystem cache size for specific files under linux

I have a directory with many files with high access rate. And I need to reduce the cache pressure of this specific directory to prevent other files (like my home directory files) from the pushing out ...
1
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1answer
2k views

Is it possible to increase the max limit of 10 pc's to any number of times without making the user a domain admin?

Normally a domain user has a maximum limit for 10 computers to join to a domain. But what i want to know is, is it possible (by joining a account to a group) to do this any number of times without ...
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3answers
16k views

Linux /etc/security/limits.conf explanation

Can anyone explain (or know of a source) that provides details about the items in limits.conf? The man page doesn't give much detail. For example it says: rtprio maximum realtime priority allowed ...
3
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4answers
780 views

If I upgrade an ext3 fs to ext4, will it automatically increase the maximum amount of directories per directory?

Due to an external unavoidable situation*, I need to have more than 32k directories in a directory (but as far as I can tell, less than 64k). I'm hitting the limit of ext3. I presume the original ...
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1answer
107 views

How to set memory limit on OS level to overcome problems with “Burstable memory service”?

I have VPS. It has Burstable memory service. My guaranteed memory limit is 1GB. I want linux not to take more that 1GB to programs on OS level. How to do it? It is ubuntu server.
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1answer
63 views

Limiting traffic in network [closed]

Can I limit bandwidth for every client or vlan in my network ? The purpose is to prevent downloading managers from taking all the bandwidth and cause other computers to have a very slow Internet speed....
2
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1answer
7k views

From which Apache version onward is LimitRequestFieldSize no longer hardcoded to 8k max?

Title says it all: from which version onward is the LimitRequestFieldSize no longer hardcoded to a max. of 8k? It seems 2.2.15 is still affected.
0
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1answer
521 views

Can I globally set to cut off too big cron e-mails?

Is there a way to limit the body of all e-mails sent out by cron (to MAILTO receivers) to a specific length. If the particular output exceeds the limit, it just gets cutt off at that point. Is there ...