Hi,
[EMAIL PROTECTED] wrote:
Are you running out of file descriptors with your Apache Process ? [ulimit -a]
I don't believe so, results of ulimit -a:
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
pending signals (-i) 32767
max locked memory (kbytes, -l) 32
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 32767
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Once this problem happens I can restart Apache, start it with 'httpd
-X', start it with strace and the exact same thing happens.
As soon as I do a ifconfig bond0.2 down it starts working. If I then
bring that interface up it carries on working for a while and then stops!
This box is not in production yet so has virtually no loading and no
clients (apart from me). I have the same config running on identical
hardware that doesn't have a bonded connection to the network or VLAN
tagging that has been in production for over 6 months and no problems at
all.
The odd thing is that Apache sees the connection request and then just
drops it!
Is there any further debugging I can perform to try to locate this?
Many thanks in advance,
Neil.
-----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.
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