** Changed in: keepalived (Ubuntu)
Status: New => Incomplete
--
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https://bugs.launchpad.net/bugs/1403137
Title:
service keepalived reload leaks file descriptors
Status in keepalived package in Ubuntu:
Incomplete
Bug description:
When keepalived is reloaded using service keepalived reload (on
controller nodes) it leaks file descriptors.
Steps to reproduce:
1. Locate the vrrp keepalived process
$ ps -elf |grep -i keepalived
1 S root 15129 1 0 80 0 - 12884 poll_s 16:47 ? 00:00:00 /usr/sbin/keepalived
5 S root 15132 15129 0 80 0 - 12990 poll_s 16:47 ? 00:00:00
/usr/sbin/keepalived
5 S root 15133 15129 0 80 0 - 12990 poll_s 16:47 ? 00:00:00
/usr/sbin/keepalived
The vrrp process is usually the second process above i.e. 15132.
2. Count how many files it has open:
$ sudo lsof -p 15132 |wc -l
34
3. Reload keepalived
$ sudo service keepalived reload
[ ok ] Reloading keepalived configuration.......
4. Count again
$ sudo lsof -p 15132 |wc -l
35
I have tested with 2.1.14 of keepalived the problem is still there.
The healthcheck daemon does a kernel_netlink_init and the cmd socket isn't
closed on reload but
a new one is opened.
I can fix with this diff, but don't know if this is the correct way to
do this:
— keepalived-1.2.14/keepalived/check/check_daemon.c 2014-05-12
08:11:27.000000000 +0100
+++ keepalived-1.2.14.patched/keepalived/check/check_daemon.c 2014-12-16
15:50:20.342064582 +0000
@@ -71,6 +71,7 @@ stop_check(void)
free_check_data(check_data);
#ifdef WITH_VRRP
free_interface_queue();
+ kernel_netlink_close();
#endif
#ifdef DEBUG
@@ -196,6 +197,7 @@ reload_check_thread(thread_t * thread)
free_checkers_queue();
#ifdef WITH_VRRP
free_interface_queue();
+ stop_check();
#endif
free_ssl();
ipvs_stop();
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