disable core dump

good day ,
recently my b0x always crash , and when i check with df -h i saw my hdd is full 100% and the problem is because the core dump files eating lots of space, after i deleted all the core dump files , my b0x work normal again.
is there a way to disable core dump files ? right now im using a crontab to check and delete core dump files.

---

thank you before.

 

i dont think i ever manually enable it .
it was saved under /home/nginx/domains/mydomain.com/public

 

here are the outputs

Code:

[root@cloud ~]# cat /etc/security/limits.conf
# /etc/security/limits.conf
#
#Each line describes a limit for a user in the form:
#
#<domain>  <type>  <item>  <value>
#
#Where:
#<domain> can be:
#  - a user name
#  - a group name, with @group syntax
#  - the wildcard *, for default entry
#  - the wildcard %, can be also used with %group syntax,
#  for maxlogin limit
#
#<type> can have the two values:
#  - "soft" for enforcing the soft limits
#  - "hard" for enforcing hard limits
#
#<item> can be one of the following:
#  - core - limits the core file size (KB)
#  - data - max data size (KB)
#  - fsize - maximum filesize (KB)
#  - memlock - max locked-in-memory address space (KB)
#  - nofile - max number of open file descriptors
#  - rss - max resident set size (KB)
#  - stack - max stack size (KB)
#  - cpu - max CPU time (MIN)
#  - nproc - max number of processes
#  - as - address space limit (KB)
#  - maxlogins - max number of logins for this user
#  - maxsyslogins - max number of logins on the system
#  - priority - the priority to run user process with
#  - locks - max number of file locks the user can hold
#  - sigpending - max number of pending signals
#  - msgqueue - max memory used by POSIX message queues (bytes)
#  - nice - max nice priority allowed to raise to values: [-20, 19]
#  - rtprio - max realtime priority
#
#<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

# End of file
* soft nofile 262144
* hard nofile 262144
nginx soft nofile 262144
nginx hard nofile 262144

Code:

[root@cloud ~]# ulimit -aH
core file size  (blocks, -c) unlimited
data seg size  (kbytes, -d) unlimited
scheduling priority  (-e) 0
file size  (blocks, -f) unlimited
pending signals  (-i) 1029986
max locked memory  (kbytes, -l) 64
max memory size  (kbytes, -m) unlimited
open files  (-n) 262144
pipe size  (512 bytes, -p) 8
POSIX message queues  (bytes, -q) 819200
real-time priority  (-r) 0
stack size  (kbytes, -s) unlimited
cpu time  (seconds, -t) unlimited
max user processes  (-u) 4096
virtual memory  (kbytes, -v) unlimited
file locks  (-x) unlimited

Code:

[root@cloud ~]# ulimit -aS
core file size  (blocks, -c) unlimited
data seg size  (kbytes, -d) unlimited
scheduling priority  (-e) 0
file size  (blocks, -f) unlimited
pending signals  (-i) 1029986
max locked memory  (kbytes, -l) 64
max memory size  (kbytes, -m) unlimited
open files  (-n) 262144
pipe size  (512 bytes, -p) 8
POSIX message queues  (bytes, -q) 819200
real-time priority  (-r) 0
stack size  (kbytes, -s) 10240
cpu time  (seconds, -t) unlimited
max user processes  (-u) 4096
virtual memory  (kbytes, -v) unlimited
file locks  (-x) unlimited

 

core name is : core.5866 etc with random number on it

 

this is the output

Code:

sysctl -a | egrep 'kernel.core_uses_pid|kernel.core_pattern|fs.suid_dumpable'
kernel.core_uses_pid = 1
kernel.core_pattern = core
fs.suid_dumpable = 0

its the same code

 

i use CentOS release 6.6 (Final)

 

i've changed it and here is the output

Code:

 ulimit -aS

core file size  (blocks, -c) 0
data seg size  (kbytes, -d) unlimited
scheduling priority  (-e) 0
file size  (blocks, -f) unlimited
pending signals  (-i) 1029986
max locked memory  (kbytes, -l) 64
max memory size  (kbytes, -m) unlimited
open files  (-n) 262144
pipe size  (512 bytes, -p) 8
POSIX message queues  (bytes, -q) 819200
real-time priority  (-r) 0
stack size  (kbytes, -s) 10240
cpu time  (seconds, -t) unlimited
max user processes  (-u) 4096
virtual memory  (kbytes, -v) unlimited
file locks  (-x) unlimited

is this correct ? i saw that core file size (blocks, -c) unlimited has change into core file size (blocks, -c) 0

 

ok thank u eva , i've disabled my crontab and lets see if it work
thanks a bunch!

 

i think it doesnt work ,
i receive this in php-fpm log

Code:

[19-Mar-2015 13:38:56] WARNING: [pool www] child 7733 exited on signal 11 (SIGSEGV - core dumped) after 263.925730 seconds from start

after that core dump files show up on public directory.

Code:

278544 -rw-------  1 nginx nginx 470073344 Mar 19 12:11 core.7443
276828 -rw-------  1 nginx nginx 468570112 Mar 19 12:20 core.7481
276720 -rw-------  1 nginx nginx 468582400 Mar 19 12:30 core.7507
276128 -rw-------  1 nginx nginx 467779584 Mar 19 12:32 core.7527
276528 -rw-------  1 nginx nginx 468303872 Mar 19 12:33 core.7533
276764 -rw-------  1 nginx nginx 468561920 Mar 19 12:36 core.7542
277108 -rw-------  1 nginx nginx 468946944 Mar 19 12:48 core.7575
276428 -rw-------  1 nginx nginx 468041728 Mar 19 13:00 core.7618
276804 -rw-------  1 nginx nginx 468307968 Mar 19 13:04 core.7644
277432 -rw-------  1 nginx nginx 469139456 Mar 19 13:38 core.7733

if you notice the size of each core dump size , it make my vps full.

 

rlimit_files = 65536
rlimit_core = 0

still default , doesnt change any of