The servers are busier today and error 49 is comming up frequently now.
Here are some results of what you asked for.
# netstat -m
305/5152/26624 mbufs in use (current/peak/max):
305 mbufs allocated to data
292/3592/6656 mbuf clusters in use (current/peak/max)
8472 Kbytes allocated to network (42% of mb_map in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
# ifconfig -a em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 options=3<rxcsum,txcsum> inet 10.0.12.15 netmask 0xffffffe0 broadcast 10.0.12.31 inet6 fe80::230:48ff:fe29:7f48%em0 prefixlen 64 scopeid 0x1 ether 00:30:48:29:7f:48 media: Ethernet 100baseTX <full-duplex> status: active em1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 options=3<rxcsum,txcsum> ether 00:30:48:29:7f:49 media: Ethernet autoselect status: no carrier lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 inet 127.0.0.1 netmask 0xff000000 ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500 sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552 faith0: flags=8002<BROADCAST,MULTICAST> mtu 1500
# netstat -rn Routing tables
Internet: Destination Gateway Flags Refs Use Netif Expire default 10.0.12.1 UGSc 588 1292 em0 10.0.12/27 link#1 UC 13 0 em0 10.0.12.1 00:00:5e:00:01:05 UHLW 588 0 em0 1177 10.0.12.8 00:0c:f1:77:a5:d8 UHLW 97 7723205 em0 229 10.0.12.10 00:30:48:29:7f:34 UHLW 0 22 em0 552 10.0.12.11 00:30:48:29:80:38 UHLW 0 1165712 em0 987 10.0.12.12 00:30:48:29:80:d4 UHLW 0 172 em0 1018 10.0.12.13 00:30:48:27:75:61 UHLW 215 35228169 em0 1193 10.0.12.14 00:30:48:29:80:84 UHLW 1 27992157 em0 959 10.0.12.15 00:30:48:29:7f:48 UHLW 1 12597865 lo0 10.0.12.22 00:30:48:23:bb:f0 UHLW 2125 303510829 em0 1034 10.0.12.23 00:e0:81:21:1b:78 UHLW 0 242 em0 697 10.0.12.26 00:0d:61:03:80:98 UHLW 0 8736 em0 975 10.0.12.30 00:c0:4f:9e:b9:c7 UHLW 0 848 em0 1003 10.0.12.31 ff:ff:ff:ff:ff:ff UHLWb 0 2347026 em0 127.0.0.1 127.0.0.1 UH 1022 153926288 lo0
Internet6:
Destination Gateway Flags Netif Expire
::1 ::1 UH lo0
fe80::%em0/64 link#1 UC em0
fe80::230:48ff:fe29:7f48%em0 00:30:48:29:7f:48 UHL lo0
fe80::%lo0/64 fe80::1%lo0 Uc lo0
fe80::1%lo0 link#3 UHL lo0
ff01::/32 ::1 U lo0
ff02::%em0/32 link#1 UC em0
ff02::%lo0/32 ::1 UC lo0
# uptime 1:39PM up 31 days, 3:02, 3 users, load averages: 1.34, 1.27, 1.07
# sysctl -a | grep socket kern.ipc.maxsockets: 12328 socket: 192, 12328, 5320, 1080, 124222928 jail.socket_unixiproute_only: 1
# tail -f /wwwlogs/httpd-error.log
[Fri Oct 22 13:39:18 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:20 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:20 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:21 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:24 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:39 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:39 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:40 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:43 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
[Fri Oct 22 13:39:43 2004] [error] (49)Can't assign requested address: proxy: HTTP: attempt to connect to 127.0.0.1:81 (127.0.0.1) failed
what else can I check for here... it's quite mysterious as several network based apps on the server fail, yet nothing in /var/log/messages indicating a problem.
From: [EMAIL PROTECTED] To: "Stephane Raimbault" <[EMAIL PROTECTED]> CC: [EMAIL PROTECTED] Subject: Re: Error 49, socket problem? Date: Thu, 14 Oct 2004 10:46:58 +0900
At Wed, 13 Oct 2004 09:36:03 -0600, Stephane Raimbault wrote: > > I doubt it's a DoS attack, however it could very well be. >
Well, probably not, given what you told us below.
> In this particular setup, apache runs on port 80 and 81. A slimed down
> version of apache handles basic http requests on port 80 and on port 81, we
> have a beefier version of apache with php running applications. We proxy
> the request from port 80 to port 81 so the client only ever sees connections
> to port 80.
>
> What I find strange is other applications on the server freak out when this
> is happening in the same manner. such as php not able to make mysql
> connections with a similar error. The errors aren't limited to 127.0.0.1
> either, it seems to be an overall problem with the box, not specifically the
> loopback or apache.
>
> PHP Warning: mysql_connect(): Can't connect to MySQL server on
> 'dbm.xxx.xxx.com' (49) in /www/index.php on line 4060
>
> In this case the above dbm.xxx.xxx.com resolves to 10.0.12.22 which is one
> of the MySQL server's in the cluster.
>
> I've ruled out that it's a problem with the MySQL server in this case,
> because I have 4 other web servers (running apache) able to connect to that
> MySQL server during the same time. All web servers in this cluster seem to
> exhibit the error randomly at diffrent times. Not only during high peak
> traffic times as previously thought.
>
> Are there buffers I could be running out of? What should I be checking?
> Perhaps something in sysctl... If I know what I should probably be looking
> at, I can probably monitor and have certain variables logged / graphed for a
> better idea of what is going on.
>
What version of FreeBSD are you running?
I would check the interfaces (ifconfig -a), routing table (netstat -rn), and then the rest of the network statistics (man netstat) when this happens. Does it happen reliably or intermittently?
Later, George
_________________________________________________________________
MSNŽ Calendar keeps you organized and takes the effort out of scheduling get-togethers. http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=http://hotmail.com/enca&HL=Market_MSNIS_Taglines Start enjoying all the benefits of MSNŽ Premium right now and get the first two months FREE*.
_______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
