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  • From: "Tony Spencer" <tony AT tonyspencer.com>
  • To: "'Internetworkers: http://www.ibiblio.org/internetworkers/'" <internetworkers AT lists.ibiblio.org>
  • Subject: RE: [internetworkers] Server Disappears Sporadically
  • Date: Wed, 1 Dec 2004 15:22:52 -0500

Sorry. Last one looked horrible due to a poor Microsoft email client
'intelligently' removing extra line breaks for me.

Dec 01 13:00:00 server1 apf(10221): flushing & zeroing chain policies
Dec 01 13:00:00 server1 apf(10221): firewall offline
Dec 01 13:05:00 server1 apf(10515): flushing & zeroing chain policies
Dec 01 13:05:00 server1 apf(10515): firewall offline
Dec 01 13:10:00 server1 apf(10741): flushing & zeroing chain policies
Dec 01 13:10:00 server1 apf(10741): firewall offline
Dec 01 13:15:01 server1 apf(10991): flushing & zeroing chain policies
Dec 01 13:15:01 server1 apf(10991): firewall offline
Dec 01 13:20:00 server1 apf(11281): flushing & zeroing chain policies
Dec 01 13:20:00 server1 apf(11281): firewall offline
Dec 01 13:25:00 server1 apf(11516): flushing & zeroing chain policies
Dec 01 13:25:00 server1 apf(11516): firewall offline
Dec 01 13:30:00 server1 apf(11805): flushing & zeroing chain policies
Dec 01 13:30:00 server1 apf(11805): firewall offline
Dec 01 14:38:24 server1 apf(1868): activating firewall
Dec 01 14:38:25 server1 apf(1904): determined eth0 has address xx.xx.xx.xx
Dec 01 14:38:25 server1 apf(1904): loading sysctl.rules
Dec 01 14:38:25 server1 apf(1904): loading preroute.rules
Dec 01 14:38:26 server1 apf(1904): loading prelog.rules
Dec 01 14:38:26 server1 apf(1904): loading bt.rules
Dec 01 14:38:26 server1 apf(1904): loading 192.168.234.235.rules
Dec 01 14:38:26 server1 apf(1904): opening inbound tcp port 22 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 3 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 5 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 11 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 0 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 30 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 8 on
192.168.234.235
Dec 01 14:38:26 server1 apf(1904): loading main.rules
Dec 01 14:38:26 server1 apf(1904): opening inbound tcp port 22 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 3 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 5 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 11 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 0 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 30 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): opening inbound icmp type 8 on
xx.xx.xx.xx
Dec 01 14:38:26 server1 apf(1904): default (egress) output accept
Dec 01 14:38:26 server1 apf(1904): default (ingress) input drop
Dec 01 14:38:27 server1 apf(1868): firewall initalized
Dec 01 14:38:51 server1 apf(2957): activating firewall
Dec 01 13:35:21 server1 apf(2998): determined eth0 has address xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): loading sysctl.rules
Dec 01 13:35:21 server1 apf(2998): loading preroute.rules
Dec 01 13:35:21 server1 apf(2998): loading prelog.rules
Dec 01 13:35:21 server1 apf(2998): loading bt.rules
Dec 01 13:35:21 server1 apf(2998): loading 192.168.234.235.rules
Dec 01 13:35:21 server1 apf(2998): opening inbound tcp port 22 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 3 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 5 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 11 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 0 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 30 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 8 on
192.168.234.235
Dec 01 13:35:21 server1 apf(2998): loading main.rules
Dec 01 13:35:21 server1 apf(2998): opening inbound tcp port 22 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 3 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 5 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 11 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 0 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 30 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): opening inbound icmp type 8 on
xx.xx.xx.xx
Dec 01 13:35:21 server1 apf(2998): default (egress) output accept
Dec 01 13:35:21 server1 apf(2998): default (ingress) input drop
Dec 01 13:35:22 server1 apf(2957): firewall initalized
Dec 01 13:40:00 server1 apf(3582): flushing & zeroing chain policies
Dec 01 13:40:00 server1 apf(3582): firewall offline
Dec 01 13:45:00 server1 apf(3969): flushing & zeroing chain policies
Dec 01 13:45:00 server1 apf(3969): firewall offline

> -----Original Message-----
> From: Sil Greene [mailto:quack AT ibiblio.org]
> Sent: Wednesday, December 01, 2004 3:12 PM
> To: Internetworkers: http://www.ibiblio.org/internetworkers/
> Subject: Re: [internetworkers] Server Disappears Sporadically
>
>
> Tony, do you also have the firewall logs from that time period?
> --s
>
>
>
>
> from Tony Spencer:
> .:
> .:I lease a server running RedHat Linux. Recently it has
> started disappearing
> .:for no apparent reason. When I say disappearing I mean
> that there is no
> .:response on port 80, I can't FTP to it, I can't SSH2, and I
> can't even ping
> .:it. I have to request my ISP to reboot it. It always
> comes back up with no
> .:problem after a reboot. I'm not a sysadmin and I've
> usually managed fine
> .:but this one is boggling me. Can anyone give me any more
> pointers for what
> .:to look for? I'm wondering if the firewall is closing
> everything for some
> .:reason.
> .:
> .:Here is the situation:
> .:RedHat v3.1.0
> .:2 GB of RAM
> .:Running two websites. Load rarely tops 0.2 and usually is
> 0 to 0.1 I ran
> .:chkrootkit as well as Rootkit Hunter and found no problems.
> .:Telnet is off.
> .:Runs APF firewall with the following ports open:
> .:TCP_CPORTS="
> .:21,22,25,26,53,80,110,143,443,2082,2083,2086,2087,2095,2096,19638"
> .:UDP_CPORTS="53"
> .:
> .:Here are logs just before and after the disappearing act.
> I think the
> .:proftpd stuff is just a monitor on the box checking whether
> or not FTP is
> .:working. I don't understand why the apache logs actually
> go backwards in
> .:time at one point (14:38:37 to 13:35:21).
> .:
> .:-----------------------------------------/var/log/messages--
> ----------------
> .:----------------
> .:Dec 1 11:48:47 server1 proftpd[3892]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 11:57:07 server1 proftpd[4500]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:11:57:07 server1 proftpd[4500]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:05:28 server1 proftpd[5466]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:05:28 server1 proftpd[5466]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:13:48 server1 proftpd[6336]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:13:48 server1 proftpd[6336]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:22:08 server1 proftpd[7163]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:22:08 server1 proftpd[7163]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:30:28 server1 proftpd[8289]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:30:28 server1 proftpd[8289]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:38:48 server1 proftpd[8787]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:38:48 server1 proftpd[8787]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:47:08 server1 proftpd[9280]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:47:09 server1 proftpd[9280]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 12:55:29 server1 proftpd[9713]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:12:55:29 server1 proftpd[9713]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 13:03:49 server1 proftpd[10167]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:13:03:49 server1 proftpd[10167]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 13:12:09 server1 proftpd[10635]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:13:12:09 server1 proftpd[10635]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 13:15:29 server1 proftpd[11067]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session opened.
> .:Dec 1 13:15:29 server1 proftpd[11067]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 13:28:49 server1 proftpd[11484]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP no transfer timeout,
> disconnected Dec 1
> .:13:28:50 server1 proftpd[11484]: server1.mydomain.com
> .:(localhost[127.0.0.1]) - FTP session closed.
> .:Dec 1 14:38:13 server1 syslogd 1.4.1: restart.
> .:
> .:--------------------------------Apache
> error_log---------------------------
> .:[Wed Dec 1 13:20:14 2004] [error] [client 65.33.122.230]
> File does not
> .:exist: /home/myuser/public_html/images/trans.gif
> .:[Wed Dec 1 13:20:18 2004] [error] [client 66.243.50.46]
> File does not
> .:exist: /home/myuser/public_html/images/trans.gif
> .:[Wed Dec 1 13:23:02 2004] [error] [client 66.206.96.196]
> File does not
> .:exist: /home/myuser/public_html/images/trans.gif
> .:[Wed Dec 1 13:24:24 2004] [error] [client 209.30.109.245]
> File does not
> .:exist: /home/myuser/public_html/images/trans.gif
> .:[Wed Dec 1 13:25:04 2004] [error] [client 24.119.238.68]
> File does not
> .:exist: /home/myuser/public_html/images/trans.gif
> .:[Wed Dec 1 13:26:26 2004] [error] [client 66.139.27.254]
> File does not
> .:exist: /home/myuser/public_html/images/trans.gif
> .:[Wed Dec 1 14:38:37 2004] [warn] pid file
> /usr/local/apache/logs/httpd.pid
> .:overwritten -- Unclean shutdown of previous Apache run?
> .:[Wed Dec 1 14:38:37 2004] [crit] (98)Address already in
> use: make_sock:
> .:could not bind to port 443
> .:[Wed Dec 1 14:38:37 2004] [notice] Apache/1.3.29 (Unix)
> Resin/2.1.12
> .:mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 P
> .:HP/4.3.3 FrontPage/5.0.2.2634 mod_ssl/2.8.16 OpenSSL/0.9.7a
> configured --
> .:resuming normal operations [Wed Dec 1 14:38:37 2004]
> [notice] suEXEC
> .:mechanism enabled (wrapper:
> .:/usr/local/apache/bin/suexec)
> .:[Wed Dec 1 14:38:37 2004] [notice] Accept mutex: sysvsem
> (Default: sysvsem)
> .:[Wed Dec 1 13:35:21 2004] [notice] SIGUSR1 received.
> Doing graceful
> .:restart [Wed Dec 1 13:35:21 2004] [notice] Apache/1.3.29 (Unix)
> .:Resin/2.1.12
> .:mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 P
> .:HP/4.3.3 FrontPage/5.0.2.2634 mod_ssl/2.8.16 OpenSSL/0.9.7a
> configured --
> .:resuming normal operations [Wed Dec 1 13:35:21 2004]
> [notice] suEXEC
> .:mechanism enabled (wrapper:
> .:/usr/local/apache/bin/suexec)
> .:[Wed Dec 1 13:35:21 2004] [notice] Accept mutex: sysvsem
> (Default: sysvsem)
> .:[Wed Dec 1 13:35:21 2004] [error] [client 12.219.125.81]
> File does not
> .:exist: /home/myuser/public_html/free-stuff/free-download-ant
> .:
> .:
> .:
> .:---
> .:Come and play at the InterNetWorkers Web site!
> http://www.ibiblio.org/internetworkers/
> .:You are currently subscribed to InterNetWorkers mailing list
> .:To unsubscribe visit
> http://lists.ibiblio.org/mailman/listinfo/internetworkers
> .:
>
> --
> "If you put your supper dish to your ears you can hear the sounds
> of a restaurant." --Snoopy
> ---
> Come and play at the InterNetWorkers Web site!
> http://www.ibiblio.org/internetworkers/
> You are currently subscribed to InterNetWorkers mailing list
> To unsubscribe visit
> http://lists.ibiblio.org/mailman/listinfo/internetworkers
>
>





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