[checkmk-commits] Check_MK Git: check_mk: Avoid race condition with intermediate DNS cache

Module: check_mk Branch: master Commit: 8351da9240f5ca09c5ce8d80aa431d15cc12f936 URL: http://git.mathias-kettner.de/git/?p=check_mk.git;a=commit;h=8351da9240f5ca… Author: Mathias Kettner <mk(a)mathias-kettner.de> Date: Wed Sep 18 13:15:43 2013 +0200 Avoid race condition with intermediate DNS cache --- modules/check_mk.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/modules/check_mk.py b/modules/check_mk.py index 7267c4e..d911cd9 100755 --- a/modules/check_mk.py +++ b/modules/check_mk.py @@ -1196,7 +1196,9 @@ def init_ip_lookup_cache(): g_ip_lookup_cache = {} def write_ip_lookup_cache(): - file(var_dir + '/ipaddresses.cache', 'w').write(repr(g_ip_lookup_cache)) + suffix = "." + str(os.getpid()) + file(var_dir + '/ipaddresses.cache' + suffix, 'w').write(repr(g_ip_lookup_cache)) + os.rename(var_dir + '/ipaddresses.cache' + suffix, var_dir + '/ipaddresses.cache') def do_update_dns_cache(): # Temporarily disable *use* of cache, we want to force an update