On 08.08.2016 09:14, Jayaram Ponnusamy wrote:
Thanks for your Quick & Valuable Response,
1. ANS-Question 1: No Both Are different Machine, We are using VirtualHost
configuration
That is not consistent with the configuration that you sent.
You have a ServerName (in Apache) named as "ServerName 10.100.0.31" (which is not a proof,
but a suggestion that the IP of this machine is 10.100.0.31).
And you have this line in workers.properties :
worker.prod_live_svr.host=10.100.0.31
which suggest that Tomcat answers to the same address.
So why are you saying "different machine" ?
2. ANS-Question 2: Kindly please share Optimal Value to Set for
ConnectionTimeout & KeepAliveTimeout if required
One again, there is no "optimal" value for all cases.
But the default values should cover most of the usual cases.
The default values are the ones that are active if you do not specify the parameter at
all. So just remove these parameters, and you should be ok. If there is a problem such as
you mention below, it is NOT because of the default value of these parameters.
3. ANS-Question 3: Yes We have Firewall, but there is no rules. I just
googled and updated this value to tuning server. Now I removed
Can you draw a simple schema of your configuration ? (ASCII-art)
Showing clearly :
- where is the workstation
- where is Apache httpd
- where is the firewall
- where is Tomcat
We do not have access to your server, so it is more complicated for helping you, unless
you provide us with precise information.
4. ANS-Question 4: I am new to Apache, While searching in Google, Based on
some recommandationI tried. I removed all these items.
Good.
Now I am monitoring systems, whether still its closing connections or not.
sir, While directly using Tomcat URL, pages are loading 1-2 Seconds, but
the same page taking 6-7 Seconds in WebServer URL.
Also, If I didn't use WebServer URL for 30minutes and hit any URL, first
time its taking more than 30 Seconds to load a page.
Is there any option to tuning the system.
See item 3 above.
Clearly, you have a problem. But without knowing your exact configuration, we can only
guess. Clearly also, it is not a problem of Tomcat per se.
To me, with the little information available so far, it sounds like it could be a problem
with DNS or routing, but that's just a wild guess so far.
On Mon, Aug 8, 2016 at 12:53 AM, André Warnier (tomcat) <a...@ice-sa.com>
wrote:
On 07.08.2016 11:08, Jayaram Ponnusamy wrote:
Hi,
We are using Tomcat 7.0.42.0, AJP/1.3 with Apache 2.2.21.
Connecting Apache to Tomcat as VirtualHost, The Problem is Apache and
Tomcat losing its connection every 20-30 Minutes. Either We have to hit
the
WebServer URL multiple times or Reboot Apache & Tomcat to resolve the
issue
for short-time.
Also accessing WebServer URL is very very slow than tomcat URL (Mostly it
takes 30-45seconds to load a Page).
I have added tomcat/Apache configurations below, Kindly please help me to
resolve this issue.
Tomcat (Server.xml):
<Connector port="9090"
protocol="HTTP/1.1"
connectionTimeout="600000"
redirectPort="8443"
URIEncoding="UTF-8" emptySessionPath="true"/>
<Connector port="9009" protocol="AJP/1.3" redirectPort="8443"
URIEncoding="UTF-8" connectionTimeout="600000"/> <------ (*)
Apache (Workers.properties):
worker.list=prod_live_svr
worker.prod_live_svr.type=ajp13
worker.prod_live_svr.host=10.100.0.31
worker.prod_live_svr.port=9009
worker.prod_live_svr.lbfactor=50
worker.prod_live_svr.socket_keepalive=1
worker.prod_live_svr.connection_pool_size=100
worker.prod_live_svr.connection_pool_minsize=50
worker.prod_live_svr.connection_pool_timeout=500
VirtualHost.conf:
<VirtualHost *:80>
ServerName 10.100.0.31
ErrorLog logs/live/http_error.log
RewriteLog logs/live/http_rewrite.log
RewriteEngine on
RewriteCond %{REMOTE_ADDR} !^10\.100\.0\.31$
RewriteRule ^/+$ /sites/ [R,L]
<IfModule rewrite_module>
Options +FollowSymlinks
RewriteEngine On
RewriteOptions Inherit
RewriteLog logs/rewrite.log
</IfModule>
JkMount /* prod_live_svr
JkOptions +ForwardURICompatUnparsed
</VirtualHost>
1) Question : are Apache httpd and Tomcat on the same machine ?
And if yes, why do you not set
worker.prod_live_svr.host=127.0.0.1
2) why : connectionTimeout="600000" (*)
That is 5 minutes.
By default, "keepAliveTimeout" is also that same value.
It means that after a request is processed (and finished) on one instance
of a Connector, this Connector will remain "stuck" on the same connection
for another 5 minutes, before it gives up and closes it. That is kind of
wasteful.
3) Why this : worker.prod_live_svr.socket_keepalive=1
Do you have a firewall between Apache httpd and Tomcat ?
4) Why these ?
worker.prod_live_svr.connection_pool_size=100
worker.prod_live_svr.connection_pool_minsize=50
worker.prod_live_svr.connection_pool_timeout=500
See : http://tomcat.apache.org/connectors-doc/reference/workers.html
--> connection_pool_size
--> connection_pool_minsize
--> connection_pool_timeout (see also (*) above)
In general (and particularly since you do not seem to be an expert in this
kind of configuration), you should not set parameters when you do not
understand exactly what they are doing.
The default configurations of Apache httpd, Tomcat and AJP are set by
experts (who know what they are doing), to values which fit a wide range of
realistic use cases.
I would suggest to rewrite your configuration as follows :
I) Tomcat server.xml :
<Connector port="9009" protocol="AJP/1.3" redirectPort="8443"
URIEncoding="UTF-8">
II) Apache httpd, workers.properties :
worker.list=prod_live_svr
worker.prod_live_svr.type=ajp13
worker.prod_live_svr.host=127.0.0.1
worker.prod_live_svr.port=9009
-----------------
That's it, no other parameters.
The Apache-side mod_jk connector module will by default and reasonably set
the connection pool size, keepalive and timeout values etc.
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