i want to set limits in /etc/security/limits.conf.My os is rhel 5.2.
It was giving continuous messages in in /var/log/secure like :
Quote:
Jan 1 09:46:43 yn55 sshd[31742]: pam_limits(sshd:session): wrong limit value 'unlimited' for limit type 'soft'
Jan 1 09:46:43 yn55 sshd[31742]: pam_limits(sshd:session): wrong limit value 'unlimited' for limit type 'hard'
continuously.
I have changed values of priority and nice to "0" from unlimited and messages are not comming. But i want to know what is the ideal/maximum value of these two items? Is 0 value set is correct? To what should i set it to? I want it to be maximum.
Hello!
How do make the limits.conf parameters work for a normal user. Ive changed
both the hard and soft parameter for the specific user. It used to be 4096 and i changed it to 16384. But when i use the ulimit -n, all i got is permissen denied.
Witch i can understand. But my question is? how... (1 Reply)
I have line in this file that says:
username - maxlogins 1
and user can login 2 times instad of one.
does enybody know why? and how can I fix that? (2 Replies)
HI,
To restrict the number of files and number of processes used the user we use the following configuration in the file /etc/security/limits.conf.
oracle soft nofile 65572
oracle hard nofile 65572
oracle soft noproc 16384
oracle soft noproc 16384
My question is what do the 'soft' and... (1 Reply)
Hi,
How can we set per user core file size, etc in solaris, i.e. I want solaris counterpart/equivalent of linux /etc/security/limits.conf.
TIA (0 Replies)
OS=HP-UX ksh
The following works, except I want to include the <start> and <end> in the output.
awk -F '<start>' 'BEGIN{RS="<end>"; OFS="\n"; ORS=""} {print $2} somefile.log'
The following work in bash but not in ksh
sed -n '/^<start>/,/^<end>/{/LABEL$/!p}' somefile.log (4 Replies)
Hello all,
I'm running Oracle 10.2 on RHEL5. Current value of ulimit -n is set to a low value of 1024. I need to increase it to 65536 using the following procedure.
cat >> /etc/security/limits.conf <<EOF
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard... (3 Replies)
Hi there,
I am trying to set a ulimit max in the /etc/security/limits.conf against a NIS netgroup (which contains a whole bunch of users) instead of a local user or group.
so I have a NIS netgroup called +@myusers , none of whose users are defined locally on the box. I want to ensure that... (2 Replies)
I've been looking online trying to find the correct value nice and priority can take in the limits.conf file. ON the man page it says;
Does this mean priority can be any negative number and any positive?
Then
Does this mean any number between -20 and 19 also what does the definition of nice... (13 Replies)
OS version : RHEL 6.5
Below is an excerpt from /etc/security/limits.conf file for OS User named appusr in our server
appusr soft nproc 2047
appusr hard nproc 16384
What will happen if appusr has already spawned 2047 processes and wants to spawn 2048th process ?
I just want to know... (3 Replies)
Discussion started by: kraljic
3 Replies
LEARN ABOUT CENTOS
prlimit
PRLIMIT(1) User Commands PRLIMIT(1)NAME
prlimit - get and set a process resource limits.
SYNOPSIS
prlimit [options] [--{resource_name}[=limits] [--pid PID]
prlimit [options] [--{resource_name}[=limits]] command [argument...]
DESCRIPTION
Given a process id and one or more resources, prlimit tries to retrieve and/or modify the limits.
When command is given, prlimit will run this command with the given arguments.
The limits format is composed by a soft and a hard (ceiling) value, separated by a semicolon (:), in order to modify the existing value(s).
If no limits are used, prlimit will only display the current values. If one of the values is not used, then the existing one will be used.
To specify the unlimited or infinity limit (RLIM_INFINITY), the -1 or 'unlimited' string can be passed.
Because of the nature of limits, the soft value must be lower or equal to the high limit. To see all the available resource limits, refer
to the RESOURCE OPTIONS section.
<soft>:<hard> Specify both limits
<soft>: Specify only the soft limit
:<hard> Specify only the hard limit
<value> Specify both soft and hard limits to the same value
GENERAL OPTIONS -p, --pid
Specify the process id, if none is given, it will use the running process.
-o, --output list
Define the output columns to use. If no output arrangement is specified, then a default set is used. Use --help to get list of all
supported columns.
-V, --version
Output version information and exit.
--verbose
Verbose mode.
--raw Use the raw output format.
--noheadings
Do not print a header line.
-h, --help
Print a help text and exit.
RESOURCE OPTIONS -c, --core[=limits]
Maximum size of a core file.
-d, --data[=limits]
Maximum data size.
-e, --nice[=limits]
Maximum nice priority allowed to raise.
-f, --fsize[=limits]
Maximum file size.
-i, --sigpending[=limits]
Maximum number of pending signals.
-l, --memlock[=limits]
Maximum locked-in-memory address space.
-m, --rss[=limits]
Maximum Resident Set Size (RSS).
-n, --nofile[=limits]
Maximum number of open files.
-q, --msgqueue[=limits]
Maximum number of bytes in POSIX message queues.
-r, --rtprio[=limits]
Maximum real-time priority.
-s, --stack[=limits]
Maximum size of the stack.
-t, --cpu[=limits]
CPU time, in seconds.
-u, --nproc[=limits]
Maximum number of processes.
-v, --as[=limits]
Address space limit.
-x, --locks[=limits]
Maximum number of file locks held.
-y, --rttime[=limits]
Timeout for real-time tasks.
EXAMPLES
prlimit --pid 13134
Display limit values for all current resources.
prlimit --pid 13134 --rss --nofile=1024:4095
Display the limits of the RSS and set the soft and hard limits for the number of open files to 1024 and 4095, respectively.
prlimit --pid 13134 --nproc=512:
Modify only the soft limit for the number of processes.
prlimit --pid $$ --nproc=unlimited
Set the number of processes for both soft and ceiling values to unlimited.
prlimit --cpu=10 sort -u hugefile
Set the soft and hard CPU time limit and run 'sort'.
SEE ALSO prlimit(2), ulimit(1)NOTES
The prlimit system call is supported since Linux 2.6.36, previous kernels will
break this program.
AUTHORS
Davidlohr Bueso <dave@gnu.org> - In memory of Dennis M. Ritchie.
AVAILABILITY
The prlimit command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux October 2011 PRLIMIT(1)