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D
Dan Mather
Inspiring
August 11, 2021
Answered

ColdFusion 2021 Apache connector or Apache not closing connections

  • August 11, 2021
  • 1 reply
  • 1338 views

Centos 7.9

ColdFusion 2021 w/ Update1

Apache 2.4.6

Connector version:321158

 

I have noticed that when using Apache via the connector to serve ColdFusion pages that over time the server quits responding.  Looking in the mod_jk.log I see:

[info] ajp_connection_tcp_get_message::jk_ajp_common.c (1443) : (cfusion) can't receive the response header message from tomcat, tomcat (127.0.0.1:8020) has forced a connection close for socket 13

[error] ajp_get_reply:: jk_ajp_common.c (2420) : (cfusion) Tomcat is down or refused connection. No response has been sent to the client (yet)

[info] ajp_service::jk_ajp_common.c (3000) : (cfusion) sending request to tomcat failed (recoverable),  (attempt=1)

 

Checking netstat I see thousands of connections in the CLOSE_WAIT state.  

Restarting Apache does not clear the hung sockets

Restarting ColdFusion does clear them

 

Using the built-in Tomcat server on port 8500 I do not see this issue.

Is this an Apache problem or a connector problem?

 

Thanks,

Dan Mather

This topic has been closed for replies.
Correct answer Dan Mather

I installed a previous version of the connector and the issue seems to have gone away (I had received serveral engineeering versions trying to resolve a different problem.)  All is well now.

 

Dan Mather

1 reply

D
Dan MatherAuthor
Inspiring
August 11, 2021

Update --I ran the Apache Server Status and can see Apache is running just fine -it closes the connection and frees the child processes.  From the Apache perspective things are fine.

 

This leads me to suspect the connector is not closing the connection.

 

Dan

D
Dan MatherAuthorCorrect answer
Inspiring
August 13, 2021

I installed a previous version of the connector and the issue seems to have gone away (I had received serveral engineeering versions trying to resolve a different problem.)  All is well now.

 

Dan Mather

    PossumJohn
    PossumJohn
    Participating Frequently
    September 8, 2021

    Good afternoon!
    Is there more information on this issue available?  We're running CF-2021 on a Solaris server.  Which version of WSConfig is current & which is the previous version?  Where can we get the previous version?  Any info on this issue would be most helpful.

    Thanks!
    V/R
    John

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