I've increased my tcp_max_syn_backlog to 4096 in the hope it will prevent it from happening again but I'm not sure what caused it in the first place.
On Wed, 2014-04-16 at 17:25 +0800, Franco Broi wrote: > Anyone seen this problem? > > server > > Apr 16 14:34:28 nas1 kernel: [7506182.154332] TCP: TCP: Possible SYN flooding > on port 49156. Sending cookies. Check SNMP counters. > Apr 16 14:34:31 nas1 kernel: [7506185.142589] TCP: TCP: Possible SYN flooding > on port 49157. Sending cookies. Check SNMP counters. > Apr 16 14:34:53 nas1 kernel: [7506207.126193] TCP: TCP: Possible SYN flooding > on port 49159. Sending cookies. Check SNMP counters. > > client > > Apr 16 14:34:21 charlie5 GlusterFS[6718]: [2014-04-16 06:34:21.710137] C > [client-handshake.c:127:rpc_client_ping_timer_expired] 0-data-client-4: > server 192.168.35.107:49157 has not responded in the last 42 seconds, > disconnecting. > Apr 16 14:34:31 charlie5 GlusterFS[6718]: [2014-04-16 06:34:31.711605] C > [client-handshake.c:127:rpc_client_ping_timer_expired] 0-data-client-2: > server 192.168.35.107:49156 has not responded in the last 42 seconds, > disconnecting. > Apr 16 14:35:13 charlie5 GlusterFS[6718]: [2014-04-16 06:35:13.758227] C > [client-handshake.c:127:rpc_client_ping_timer_expired] 0-data-client-0: > server 192.168.35.107:49159 has not responded in the last 42 seconds, > disconnecting. > > > _______________________________________________ > Gluster-users mailing list > [email protected] > http://supercolony.gluster.org/mailman/listinfo/gluster-users _______________________________________________ Gluster-users mailing list [email protected] http://supercolony.gluster.org/mailman/listinfo/gluster-users
