Hello!
We are having currently hard Problems with mod_backhand.
Our Environment:
Servers: 4 Nodes (A,B,C,D), each Dual P3 1Ghz with 1GB Ram.
Software: apache-ssl 1.3.26 (debian)
The nodes building 2 Groups:
*) lgD
-) Primary Server Node A
-) Backhand Server Node C
-) Backhand Server Node D
*) lgE
-) Primary Server Node B
-) Backhand Server Node C
-) Backhand Server Node D
Node A & B are Load Balanced through Round-Robin-DNS.
The only one who's makeing troubles is Node B. One or two Weeks ago
backhand starts dieing with the message:
[Thu Jan 1 19:32:14 2004] [error] (111)Connection refused: Child 16061
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:14 2004] [error] (111)Connection refused: Child 16063
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:14 2004] [error] (111)Connection refused: Child 16062
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:16 2004] [error] (111)Connection refused: Child 16064
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:17 2004] [error] (111)Connection refused: Child 16065
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:17 2004] [error] (111)Connection refused: Child 16066
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:18 2004] [error] (111)Connection refused: Child 16071
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:18 2004] [error] (111)Connection refused: Child 16072
failed to establish umbilical to moderator!
So i installed a cronjobs which restarts apache-ssl on Node B to a
specific time during night.
I looked out in this mailing list, found some entries to change
kernel-values in /proc (not helping), looking for apache segfaults in
the errorlogs (not found).
only found two line in the error-log before the crash:
[Thu Jan 1 19:06:02 2004] [error] (111)Connection refused: Child 11432
failed to establish umbilical to moderator!
[Thu Jan 1 19:06:02 2004] [notice] child pid 29408 exit signal Broken
pipe (13)
first the backhand-error-message, then an apache error.
Now we have the Problem, that backhand crash much more often then one
times a day - in different time intervals.
there where no changes on the hardware, also not on the software
(apache, php, mod_perl, websites and so on...).
I checked all, /var/backhand looks good. Checked the PID of the
Moderator.... all ok....
Does anyone has an idea howto solve this Problem?
Andreas
CUBiT Information Technology
We are having currently hard Problems with mod_backhand.
Our Environment:
Servers: 4 Nodes (A,B,C,D), each Dual P3 1Ghz with 1GB Ram.
Software: apache-ssl 1.3.26 (debian)
The nodes building 2 Groups:
*) lgD
-) Primary Server Node A
-) Backhand Server Node C
-) Backhand Server Node D
*) lgE
-) Primary Server Node B
-) Backhand Server Node C
-) Backhand Server Node D
Node A & B are Load Balanced through Round-Robin-DNS.
The only one who's makeing troubles is Node B. One or two Weeks ago
backhand starts dieing with the message:
[Thu Jan 1 19:32:14 2004] [error] (111)Connection refused: Child 16061
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:14 2004] [error] (111)Connection refused: Child 16063
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:14 2004] [error] (111)Connection refused: Child 16062
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:16 2004] [error] (111)Connection refused: Child 16064
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:17 2004] [error] (111)Connection refused: Child 16065
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:17 2004] [error] (111)Connection refused: Child 16066
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:18 2004] [error] (111)Connection refused: Child 16071
failed to establish umbilical to moderator!
[Thu Jan 1 19:32:18 2004] [error] (111)Connection refused: Child 16072
failed to establish umbilical to moderator!
So i installed a cronjobs which restarts apache-ssl on Node B to a
specific time during night.
I looked out in this mailing list, found some entries to change
kernel-values in /proc (not helping), looking for apache segfaults in
the errorlogs (not found).
only found two line in the error-log before the crash:
[Thu Jan 1 19:06:02 2004] [error] (111)Connection refused: Child 11432
failed to establish umbilical to moderator!
[Thu Jan 1 19:06:02 2004] [notice] child pid 29408 exit signal Broken
pipe (13)
first the backhand-error-message, then an apache error.
Now we have the Problem, that backhand crash much more often then one
times a day - in different time intervals.
there where no changes on the hardware, also not on the software
(apache, php, mod_perl, websites and so on...).
I checked all, /var/backhand looks good. Checked the PID of the
Moderator.... all ok....
Does anyone has an idea howto solve this Problem?
Andreas
CUBiT Information Technology