Solaris process debugging: Difference between revisions
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[[Kategorie:Solaris]] | [[Kategorie:Solaris|Debugging]] | ||
==Set the core file size limit on a process== | ==Set the core file size limit on a process== | ||
For example for the sshd (and all resulting childs | For example for the sshd (and all resulting childs from now): | ||
<source lang=bash> | <source lang=bash> | ||
# prctl -n process.max-core-size -v | ssh-server# prctl -n process.max-core-size -v 2g -t privileged -r -e deny $(pgrep -u root -o sshd) | ||
</source> | </source> | ||
Check: | |||
<source lang=bash> | |||
ssh-server# prctl -n process.max-core-size $(pgrep -u root -o sshd) | |||
process: 1491: /usr/lib/ssh/sshd | |||
NAME PRIVILEGE VALUE FLAG ACTION RECIPIENT | |||
process.max-core-size | |||
privileged 2.00GB - deny - | |||
system 8.00EB max deny - | |||
</source> | |||
Now all processes (for example new logged in users) will have a core file size limit of 2GB... really? No! | |||
<source lang=bash> | |||
ssh-client# ssh ssh-server | |||
ssh-server# ulimit -Ha | grep core | |||
core file size (blocks, -c) 2097152 | |||
</source> | |||
See what it says: blocks <-- !!! | |||
From man page: -c Maximum core file size (in 512-byte blocks) | |||
Revision as of 12:48, 3 December 2015
Set the core file size limit on a process
For example for the sshd (and all resulting childs from now):
ssh-server# prctl -n process.max-core-size -v 2g -t privileged -r -e deny $(pgrep -u root -o sshd)
Check:
ssh-server# prctl -n process.max-core-size $(pgrep -u root -o sshd)
process: 1491: /usr/lib/ssh/sshd
NAME PRIVILEGE VALUE FLAG ACTION RECIPIENT
process.max-core-size
privileged 2.00GB - deny -
system 8.00EB max deny -
Now all processes (for example new logged in users) will have a core file size limit of 2GB... really? No!
ssh-client# ssh ssh-server
ssh-server# ulimit -Ha | grep core
core file size (blocks, -c) 2097152
See what it says: blocks <-- !!! From man page: -c Maximum core file size (in 512-byte blocks)
