Are you running out of file descriptors with your Apache Process ? [ulimit -a]
Greetings Oliver -----Ursprüngliche Nachricht----- Von: Neil A. Hillard [mailto:[EMAIL PROTECTED] Gesendet: Mi 25.01.2006 10:53 An: users@httpd.apache.org Betreff: [EMAIL PROTECTED] Apache drops connection but ifdown/up resolves the issue! Hi, I've got Apache 2.0.55 built from source and am seeing an odd problem related to multiple IP addresses on VLANs. The server has a trunked connection back to our switch and has the IP addresses 172.24.12.9, 172.24.11.3 and 172.16.14.104. These are configured as bond0, bond0:2 and bond0.2 respectively. There are other aliases IP addresses on bond0 but they're probably irrelevant for this problem. Apache is listening on all interfaces, port 80 and 443. I have a client at 172.16.40.32 attempting to connect to port 80 on 172.24.11.3. The following occurs: # telnet 172.24.11.3 80 Trying 172.24.11.3... Connected to 172.24.11.3 (172.24.11.3). Escape character is '^]'. Connection closed by foreign host. An strace against httpd shows: [pid 31138] accept(3, {sa_family=AF_INET, sin_port=htons(44894), sin_addr=inet_addr("172.16.40.32")}, [16]) = 16 [pid 31138] semop(6914069, 0xb79f0c, 1) = 0 [pid 31138] futex(0x837c474, FUTEX_WAKE, 1 <unfinished ...> [pid 31130] <... futex resumed> ) = 0 [pid 31138] <... futex resumed> ) = 1 [pid 31138] semop(6914069, 0xb79f12, 1) = 0 [pid 31138] poll( <unfinished ...> [pid 31130] futex(0x837c43c, FUTEX_WAKE, 1) = 0 [pid 31130] getsockname(16, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("172.24.11.3")}, [16]) = 0 [pid 31130] fcntl64(16, F_GETFL) = 0x2 (flags O_RDWR) [pid 31130] fcntl64(16, F_SETFL, O_RDWR|O_NONBLOCK) = 0 [pid 31130] read(16, 0x83eccf8, 8000) = -1 EAGAIN (Resource temporarily unavailable) [pid 31130] poll([{fd=16, events=POLLIN, revents=POLLIN|POLLERR|POLLHUP}], 1, 300000) = 1 [pid 31130] read(16, 0x83eccf8, 8000) = -1 ECONNRESET (Connection reset by peer) [pid 31130] gettimeofday({1138182161, 971221}, NULL) = 0 [pid 31130] shutdown(16, 1 /* send */) = -1 ENOTCONN (Transport endpoint is not connected) [pid 31130] close(16) = 0 If I then perform 'ifconfig bond0.2 down', 'ifconfig bond0.2 up' and repeat the test everything works as expected! It carries on working for a while and then gives up the ghost again! Apache is receiving the connection and I can see from a packet capture that the three-way handshake is completing but for some reason it's dropping the connection - almost like tcpwrappers does! Whilst Apache is refusing the connections, I can still ssh to the same IP address. This one has me puzzled - if anyone can shed some light on it, it would be much appreciated! Many thanks in advance, Neil. -- Neil Hillard [EMAIL PROTECTED] Westland Helicopters Ltd. http://www.whl.co.uk/ Disclaimer: This message does not necessarily reflect the views of Westland Helicopters Ltd. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] " from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
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