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0
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0answers
6 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. ...
1
vote
0answers
21 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 ...
0
votes
3answers
61 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 ...
1
vote
0answers
37 views

How can I decide which unix or unix-like OS will give me the most open files permissible? [closed]

I am looking to deploy a service that is capable of serving more than 65535 simultaneous connections on one host. 65535 seems to be the practical limit of most common linux distributions. Are there ...
1
vote
1answer
54 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/...
3
votes
3answers
111 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
votes
1answer
113 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 ...
-1
votes
2answers
659 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?
0
votes
0answers
47 views

Apache 2.4: Processes “stuck” in status “Open slot with no current process”

at the moment I am facing a strange behavior of apache2.4. When I check mod_status' results I'm getting a list of current processes. Most of the time everything looks fine: Srv PID Acc M CPU SS ...
0
votes
1answer
46 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 ...
3
votes
0answers
160 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 ...
0
votes
1answer
317 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
votes
1answer
120 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
votes
1answer
535 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
vote
1answer
163 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 ...
1
vote
0answers
346 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 ...
0
votes
1answer
399 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....
0
votes
1answer
286 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 ...
1
vote
1answer
529 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
votes
1answer
231 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
vote
0answers
60 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 ...
0
votes
2answers
1k 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 ...
12
votes
2answers
41k 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] ...
-5
votes
1answer
105 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 ...
1
vote
0answers
353 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
votes
2answers
384 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 - ...
7
votes
3answers
12k 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. ...
-1
votes
1answer
724 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
vote
1answer
925 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 ...
2
votes
3answers
6k 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
votes
4answers
631 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 ...
0
votes
1answer
86 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.
-3
votes
1answer
59 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....
1
vote
1answer
4k 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
votes
1answer
160 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 ...
3
votes
2answers
2k views

When NOT to use virtualisation?

When virtualisation was new, we tried to virtualise everything, but then we noticed use cases where the our virtual machines were much slower than a bare metal. For us, we use the following rules ...
0
votes
1answer
1k views

Finding the source of a ulimit setting

On my CentOS 6.2 server the value of ulimit -v (virtual memory) is 1048576. However, this is not set in /etc/security/limits.conf (which is empty) or .../limit.d/ (which contains only a max processes ...
3
votes
2answers
3k views

Monitor open files limits, etc

We've been hitting the max open files limit on a few services recently. There are also a bunch of other limits in place. Is there a way to monitor how close processes are to these limits so we can be ...
0
votes
2answers
1k views

Message: mkdir() [function.mkdir]: Too many links

We run a web application as a production. Some days ago I discovered the error signed in subject of this theme. I know what's the problem, but want to ask, what is right way for resolve this? Yes, we ...
7
votes
2answers
11k views

Reload /etc/security/limits.conf

I would like to: make a soft 64GB limit for resident memory (so inexperienced users will get their run-amok processes killed, but experienced users can raise the limit for memory hungry processes) ...
1
vote
3answers
213 views

Limiting specific process to just one per user

My scripts are using wget to retrieve data from Internet. When many users are using this script I got very high load (about 20.00), because of disk I/O. Wget is automatically started each hour by cron....
0
votes
3answers
5k views

Maximum Size Limit for CIFS Share Accessed by Windows Server 2003 (32 bit) Client?

We have a CIFS share being served out by a NETAPP appliance. The CIFS share has grown to over 2 TB in size. A Windows Server 2003 32 bit-client accesses the share. Lets say, for example, the ...
3
votes
1answer
4k views

how do i set hard and soft file limits for a non-root user at boot?

I have a xen HVM vps and I'm trying to raise the hard and soft file limits for nobody at boot time. I'm using Ubuntu 10.04.3 and inside /etc/security/limits.conf I have: nobody soft nofile ...
0
votes
1answer
138 views

Debian virt/res/shr and cpu time limiting

Servers have multiple users running multiple programs, some of which don't seem to behave and will eat up RAM like there is no tomorrow, for example: PID USER PR NI VIRT RES SHR S %CPU %...
1
vote
2answers
815 views

Setup MySQL per account limits similar to shared hosting

Similar questions have been asked before, such as this one, but none of the answers I've seen so far really tell me what I'm after. I have a need to set up a Linux box for internal development and ...
1
vote
4answers
375 views

What are performance limits of a database?

What are some rough performance limits (read/s, write/s) for a single database server (no master-slave architecture), assuming storage on disk? How many read/s, write/s, depending on the kind of disk? ...
18
votes
5answers
18k views

Set max file limit on a running process

I have a long running process that is eventually going to hit the max open file limit. I know how to change that after it fails, but is there a way to change that for the running process, from the ...
3
votes
4answers
9k views

Setup “open files” limit in Linux per user. Cannot setup more than 1024

I try to increase open file limit for certain user on CentOS 5.5 Linux. I added a new line to /etc/security/limits.conf: seed hard nofile 10240 Then do test: runuser -s /bin/bash - ...
0
votes
1answer
263 views

Why does IIS seem to be limiting simultaneous connections?

One of the ASP.NET web apps that we have allows users to download relatively large files that can take a bit of time to fetch. For reasons I don't understand, it looks to me like any given client is ...
2
votes
2answers
2k views

Fork-bomb Protection on OS X - Limit processes with ulimit?

Got introduced to the fascinating world of UNIX about a year ago, but after, for lack of a better expression, "the waste-matter colliding with the rapidly spinning blades" today as a result of my ...