[Linux-cluster] Fork Bomb breaking the cluster

Tiago Cruz tiagocruz at forumgdh.net
Fri Jan 23 17:18:10 UTC 2009

Hello Guys,

One simple shell fork bomb was breaking all the cluster (11 virtual

This not solve:

(If I run as root, the virtual machine goes down, the I/O on GFS stop
and the cluster does not fence the virtual machine automatic).

The I/O return only if I fence_node manually.

PS: IF the fork bomb as write in C, does not break the cluster. Only the
Shell one...

[root at cluster-11 ~]# ulimit -a | grep proc
max user processes              (-u) 512
[root at cluster-11 ~]# cat fork.c 
#include <unistd.h>
int main(int argc, char* argv[])
  return 0;

Fork Shell: # :(){ :|:& };:

Thanks a lot!

Tiago Cruz
Linux User #282636

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