Date: Sat, 19 Mar 2011 18:15:24 -0500 From: Len Conrad <LConrad@Go2France.com> To: freebsd-questions@freebsd.org Subject: Re: tcp/ip failures with fbsd 8.2 386 on ESX 4.1 Message-ID: <201103200015588.SM06140@W500.Go2France.com> In-Reply-To: <22687_1300574850_4D853282_22687_4818_1_D9B37353831173459FD AA836D3B43499BD354B91@WADPMBXV0.waddell.com> References: <201103192340697.SM06140@W500.Go2France.com> <22687_1300574850_4D853282_22687_4818_1_D9B37353831173459FDAA836D3B43499BD354B91@WADPMBXV0.waddell.com>
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>Maybe try disabling dns lookups within syslog-ng? > >----- Original Message ----- >From: Len Conrad [mailto:LConrad@Go2France.com] >Sent: Saturday, March 19, 2011 05:40 PM >To: freebsd-questions@freebsd.org <freebsd-questions@freebsd.org> >Subject: tcp/ip failures with fbsd 8.2 386 on ESX 4.1 > > >FreeBSD 8.2 32-bit >ESXi 4.1 >em0 driver to the ESXi Intel emulation >syslog-ng 2.0.10 > >em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM> > ether 00:50:56:90:00:01 > inet a.b.c.85 netmask 0xffffffe0 broadcast a.b.c.95 > media: Ethernet autoselect (1000baseT <full-duplex>) > status: active > >We've be running FreeBSD 7.x for a couple of years on ESXi 4.0 and 4.1 with no problems. > >We're having tcp/ip failures with 8.2 as syslog-ng server. trafshow shows aggregate port 514 traffic hitting peaks of about 25K char/sec. > >After sometimes many hours of the syslog-ng VM server running well, > >monit from other machines signals port 514 is down, up, down, up. > >this is confirmed by other machines with > >nmap a.b.c.d -p 514 -sU > >... showing closed, open, closed, etc. > >syslog-ng logging for all syslog clients stops more or less simultaneously. > >trafshow filtered for port 514 shows udp packets arriving, but instead of showing the source and destinations by PTR domain name, it switches to showing their IPs. > >to test the external DNS, on the syslog-ng VM, we try > >dig @recursive.server -x a.b.c.d > >and get no response. Other machines query the recursive server successfully. > >Without rebooting the FreeBSD VM, we do > >/etc/rc.d/netif restart >/etc/rc.d/routing restart > >which allows full operation. > >dmesg and messages show no errors. > >Suggestions? > >Len the failure just happened again. this time ssh sessions, like the one running trafshow, are cut off. ssh again gets "connection refused" on another machine running a looping, logging script of nmap a.b.c.d -p 514 -sU show port 514 open It seems like the tcp/ip or em0 driver gets screwed up. Len >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > > ><font size="1"> ><div style='border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 1.0pt 0in'> ></div> >"This email is intended to be reviewed by only the intended recipient > and may contain information that is privileged and/or confidential. > If you are not the intended recipient, you are hereby notified that > any review, use, dissemination, disclosure or copying of this email > and its attachments, if any, is strictly prohibited. If you have > received this email in error, please immediately notify the sender by > return email and delete this email from your system." ></font> > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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