headless server "froze" seems like it's simply ignoreing dhcp offers?
Okay so I have a very, very, very humble home server that I use for mumble, I got the bright idea to try using it as a minecraft server, just to see if it could handle the load, there would only be a max of like 3 clients at one time ever. I started it up and started playing, I kept htop open to see how it handled the load, after a few minutes everything just froze up and I couldn't contact the server via ping or ssh. With just me playing the cpu was around 80% and ram around 90% used.
Checking syslog (that's the right log to check yes?) I notice the same day that this happened syslog is spammed with what seems like very rapid dhcp traffic that is just, getting ignored. Here is what I am talking about. Could that be a symptom of the system being overloaded? Or something else entirely?
Code:
Apr 18 14:31:53 dhclient: last message repeated 5 times
Apr 18 14:32:42 dhclient: last message repeated 3 times
Apr 18 14:32:42 voiceserv kernel: [1126699.590590] [UFW BLOCK] IN=eth0 OUT= MAC=01:00:5e:00:00:01:64:0f:28:8d:28:41:08:00 SRC=192.168.1.254 DST=224.0.0.1 LEN=36 TOS=0x00 PREC=0xC0 TTL=1 ID=30
842 PROTO=2
Apr 18 14:32:48 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 192.168.1.254 port 67
Apr 18 14:33:04 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 192.168.1.254 port 67
Apr 18 14:33:23 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:34:27 dhclient: last message repeated 5 times
Apr 18 14:34:33 voiceserv avahi-daemon[714]: Withdrawing address record for 108.215.132.8 on eth0.
Apr 18 14:34:33 voiceserv avahi-daemon[714]: Leaving mDNS multicast group on interface eth0.IPv4 with address 108.215.132.8.
Apr 18 14:34:33 voiceserv avahi-daemon[714]: Interface eth0.IPv4 no longer relevant for mDNS.
Apr 18 14:34:33 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:34:33 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:34:33 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:34:56 dhclient: last message repeated 2 times
Apr 18 14:34:56 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:34:56 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:34:56 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:34:59 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:35:07 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:35:07 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:35:07 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:35:10 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:35:18 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:35:18 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:35:18 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:35:35 dhclient: last message repeated 2 times
Apr 18 14:35:35 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:35:35 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:35:35 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:35:46 dhclient: last message repeated 2 times
Apr 18 14:35:46 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:35:46 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:35:46 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:36:02 dhclient: last message repeated 2 times
Apr 18 14:36:02 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:36:02 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:36:02 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:36:05 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:36:13 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:36:13 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:36:13 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:36:34 dhclient: last message repeated 2 times
Apr 18 14:36:34 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:36:34 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:36:34 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:36:58 dhclient: last message repeated 2 times
Apr 18 14:36:58 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 14:36:58 voiceserv dhclient: DHCPOFFER of 108.215.132.8 from 192.168.1.254
Apr 18 14:36:58 voiceserv dhclient: DHCPREQUEST of 108.215.132.8 on eth0 to 255.255.255.255 port 67
Apr 18 14:37:10 dhclient: last message repeated 2 times
Apr 18 14:37:10 voiceserv dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
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