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Posted to users@tomcat.apache.org by Bernd Wahlen <be...@k2interactive.de> on 2017/07/31 16:59:58 UTC
No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
We are running a cluster of 5 tomcats behind
a loadbalancer (shared big ip f5).
Traffic is http, https and websocket.
After upgrading one of the servers to
Tomcat 8.5.16 this server get no traffic anymore.
Everything is running fine until 8.0.45.
If i connect directly against the node
with 8.5, everything is running fine also,
so it must be a issue related to the loadbalancing
or loadbalancing checks.
I read the changes and tries the following
1.)
https://www.joedog.org/2016/02/28/test-connectivity-to-an-ajp-server-with-ajping/
=> AJP is still working
2.)
Configure CookieProcessor to LegacyCookieProcessor
but no success.
Any idea what to i can check or what changed related
to that problem?
Many thanks in advance,
Bernd Wahlen
K2 Interactive GmbH
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by "M. Manna" <ma...@gmail.com>.
By farms, I am referring to your setup for 5 Tomcats.
Have you tried taking the affected server out completely from the farm? In
this way, you have 4 tomcats seen by the loadbalancer. Once you have done
the upgrade, re-register this server with your load balancer.
Also, have you checked whether your server.xml file and other settings
files are correct/as per your original settings - or is there any
adjustment that's required?
I am assuming that all you want to do is upgrade tomcat, so your server.xml
should have the identical settings to your other 4 tomcats.
On 31 July 2017 at 18:17, Bernd Wahlen <be...@k2interactive.de>
wrote:
> Thanks for your help,
>
> what do you mean with take it off the server farms first?
>
> The upgrade process is like this:
> stop tomcat
> change symlink to new version
> start tomcat
>
> loadbalancer detect that the server is down and routes the traffic
> to the other hosts.
> This is like we always do since tomcat 6.
> After downgrading back to the old version load is comming back fast.
>
> Because of the shared infrastructure every change to the
> loadbalancing pools must be ordered and costs money.
>
>
>
>
> On 07/31/2017 07:04 PM, M. Manna wrote:
>
>> When you upgraded the affected tomcat from 8.0.45 to 8.5.16, Did you take
>> it off the server farms first? Or did you do it without?
>> Try to remove the affected tomcat off the server farm. Do you upgrade, and
>> then put it back inside the farm.
>>
>> Or have you tried this already?
>>
>> On 31 July 2017 at 17:59, Bernd Wahlen <be...@k2interactive.de>
>> wrote:
>>
>>
>>> We are running a cluster of 5 tomcats behind
>>> a loadbalancer (shared big ip f5).
>>> Traffic is http, https and websocket.
>>> After upgrading one of the servers to
>>> Tomcat 8.5.16 this server get no traffic anymore.
>>> Everything is running fine until 8.0.45.
>>> If i connect directly against the node
>>> with 8.5, everything is running fine also,
>>> so it must be a issue related to the loadbalancing
>>> or loadbalancing checks.
>>>
>>> I read the changes and tries the following
>>>
>>> 1.)
>>> https://www.joedog.org/2016/02/28/test-connectivity-to-an-aj
>>> p-server-with-ajping/
>>> => AJP is still working
>>>
>>> 2.)
>>> Configure CookieProcessor to LegacyCookieProcessor
>>>
>>> but no success.
>>> Any idea what to i can check or what changed related
>>> to that problem?
>>>
>>> Many thanks in advance,
>>>
>>> Bernd Wahlen
>>> K2 Interactive GmbH
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>> For additional commands, e-mail: users-help@tomcat.apache.org
>>>
>>>
>>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Peter Kreuser <lo...@kreuser.name>.
Hi Bernd,
> Am 31.07.2017 um 19:17 schrieb Bernd Wahlen <be...@k2interactive.de>:
>
> Thanks for your help,
>
> what do you mean with take it off the server farms first?
>
> The upgrade process is like this:
> stop tomcat
> change symlink to new version
> start tomcat
>
> loadbalancer detect that the server is down and routes the traffic
> to the other hosts.
> This is like we always do since tomcat 6.
> After downgrading back to the old version load is comming back fast.
>
> Because of the shared infrastructure every change to the
> loadbalancing pools must be ordered and costs money.
>
>
>
>> On 07/31/2017 07:04 PM, M. Manna wrote:
>> When you upgraded the affected tomcat from 8.0.45 to 8.5.16, Did you take
>> it off the server farms first? Or did you do it without?
>> Try to remove the affected tomcat off the server farm. Do you upgrade, and
>> then put it back inside the farm.
>>
>> Or have you tried this already?
>>
>> On 31 July 2017 at 17:59, Bernd Wahlen <be...@k2interactive.de>
>> wrote:
>>
>>>
>>> We are running a cluster of 5 tomcats behind
>>> a loadbalancer (shared big ip f5).
>>> Traffic is http, https and websocket.
>>> After upgrading one of the servers to
>>> Tomcat 8.5.16 this server get no traffic anymore.
>>> Everything is running fine until 8.0.45.
>>> If i connect directly against the node
>>> with 8.5, everything is running fine also,
>>> so it must be a issue related to the loadbalancing
>>> or loadbalancing checks.
>>>
>>> I read the changes and tries the following
>>>
>>> 1.)
>>> https://www.joedog.org/2016/02/28/test-connectivity-to-an-aj
>>> p-server-with-ajping/
>>> => AJP is still working
>>>
>>> 2.)
>>> Configure CookieProcessor to LegacyCookieProcessor
>>>
>>> but no success.
>>> Any idea what to i can check or what changed related
>>> to that problem?
>>>
>>> Many thanks in advance,
>>>
>>> Bernd Wahlen
>>> K2 Interactive GmbH
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>> For additional commands, e-mail: users-help@tomcat.apache.org
>>>
>>>
>>
Do you see F5-healthcheck-requests in your accesslogs? If so, did you compare the old and new responses?
If not, can the F5 reach your server, can you reach the HC-page?
Is the F5-HC checking for specific values, headers, response codes?
Peter
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Bernd Wahlen <be...@k2interactive.de>.
Thanks for your help,
what do you mean with take it off the server farms first?
The upgrade process is like this:
stop tomcat
change symlink to new version
start tomcat
loadbalancer detect that the server is down and routes the traffic
to the other hosts.
This is like we always do since tomcat 6.
After downgrading back to the old version load is comming back fast.
Because of the shared infrastructure every change to the
loadbalancing pools must be ordered and costs money.
On 07/31/2017 07:04 PM, M. Manna wrote:
> When you upgraded the affected tomcat from 8.0.45 to 8.5.16, Did you take
> it off the server farms first? Or did you do it without?
> Try to remove the affected tomcat off the server farm. Do you upgrade, and
> then put it back inside the farm.
>
> Or have you tried this already?
>
> On 31 July 2017 at 17:59, Bernd Wahlen <be...@k2interactive.de>
> wrote:
>
>>
>> We are running a cluster of 5 tomcats behind
>> a loadbalancer (shared big ip f5).
>> Traffic is http, https and websocket.
>> After upgrading one of the servers to
>> Tomcat 8.5.16 this server get no traffic anymore.
>> Everything is running fine until 8.0.45.
>> If i connect directly against the node
>> with 8.5, everything is running fine also,
>> so it must be a issue related to the loadbalancing
>> or loadbalancing checks.
>>
>> I read the changes and tries the following
>>
>> 1.)
>> https://www.joedog.org/2016/02/28/test-connectivity-to-an-aj
>> p-server-with-ajping/
>> => AJP is still working
>>
>> 2.)
>> Configure CookieProcessor to LegacyCookieProcessor
>>
>> but no success.
>> Any idea what to i can check or what changed related
>> to that problem?
>>
>> Many thanks in advance,
>>
>> Bernd Wahlen
>> K2 Interactive GmbH
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by "M. Manna" <ma...@gmail.com>.
When you upgraded the affected tomcat from 8.0.45 to 8.5.16, Did you take
it off the server farms first? Or did you do it without?
Try to remove the affected tomcat off the server farm. Do you upgrade, and
then put it back inside the farm.
Or have you tried this already?
On 31 July 2017 at 17:59, Bernd Wahlen <be...@k2interactive.de>
wrote:
>
> We are running a cluster of 5 tomcats behind
> a loadbalancer (shared big ip f5).
> Traffic is http, https and websocket.
> After upgrading one of the servers to
> Tomcat 8.5.16 this server get no traffic anymore.
> Everything is running fine until 8.0.45.
> If i connect directly against the node
> with 8.5, everything is running fine also,
> so it must be a issue related to the loadbalancing
> or loadbalancing checks.
>
> I read the changes and tries the following
>
> 1.)
> https://www.joedog.org/2016/02/28/test-connectivity-to-an-aj
> p-server-with-ajping/
> => AJP is still working
>
> 2.)
> Configure CookieProcessor to LegacyCookieProcessor
>
> but no success.
> Any idea what to i can check or what changed related
> to that problem?
>
> Many thanks in advance,
>
> Bernd Wahlen
> K2 Interactive GmbH
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Bernd,
On 8/1/17 12:07 PM, Bernd Wahlen wrote:
>> I wonder if the F5 is not happy with the HTTP response status
>> "reason string" being removed:
>>
>> https://bz.apache.org/bugzilla/show_bug.cgi?id=60362
>>
>> What happens if you add the sendReasonPhrase="true" to your
>> <Connector> configuration and try again?
>
> Hi chris,
>
> Many thanks!
>
> That's the solution.
I've updated the Migration Guide to include a note about the HTTP
Reason Phrase. It should be up on the web site, soon.
Apologies for it not being in there in the first place... it's been a
hotly-contested subject since that change was made.
- -chris
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Bernd Wahlen <be...@k2interactive.de>.
Hi chris,
Many thanks!
That's the solution.
Bernd
> I wonder if the F5 is not happy with the HTTP response status "reason
> string" being removed:
>
> https://bz.apache.org/bugzilla/show_bug.cgi?id=60362
>
> What happens if you add the sendReasonPhrase="true" to your
> <Connector> configuration and try again?
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Bernd,
On 8/1/17 5:43 AM, Bernd Wahlen wrote:
> Hi Peter and thanks for your help.
>
>> From my perspective the Tomcat is working, responding and
>> serving content.
>>
>> That leads to the thought, that the F5 is not evaluating the
>> response correctly. In my opinion you should talk to the admins
>> and ask them why they are not activating your service. The
>> Healthcheck of the F5 usually checks for certain data. 404
>> responses are strange but may also work.
>>
>> The responses differ in size, so, there may be the problem
>> (content and/or header differ!). The new response is larger, so
>> it's not only missing the Server header!
>
> The content size is different, but thats the default tomcat error
> message, e.g.
>
> <!DOCTYPE html> <html> <head> <title>Apache Tomcat/8.0.45 - Error
> report</title> <style type="text/css">H1
> {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525
D76;font-size:22px;}
>
>
H2
> {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525
D76;font-size:16px;}
>
>
H3
> {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525
D76;font-size:14px;}
>
>
BODY
> {font-family:Tahoma,Arial,sans-serif;color:black;background-color:whit
e;}
> B
> {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525
D76;}
>
>
P
> {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font
- -size:12px;}A
>
>
{color : black;}A.name {color : black;}.line {height: 1px;
> background-color: #525D76; border: none;}</style> </head> <body>
> <h1>HTTP Status 404 - /</h1> <div class="line"></div> <p>
> <b>type</b> Status report </p> <p> <b>message</b> <u>/</u> </p>
> <p> <b>description</b> <u>The requested resource is not
> available.</u> </p> <hr class="line"> <h3>Apache
> Tomcat/8.0.45</h3> </body> </html>
>
> and changed a bit in 8.5, but there is definelty no check on the
> content, because i created a empty index.html, then the response
> is 200/OK and content length is 0. It is still working with 8.0 and
> not working with 8.5 again.
I wonder if the F5 is not happy with the HTTP response status "reason
string" being removed:
https://bz.apache.org/bugzilla/show_bug.cgi?id=60362
What happens if you add the sendReasonPhrase="true" to your
<Connector> configuration and try again?
- -chris
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Bernd Wahlen <be...@k2interactive.de>.
Hi Peter and thanks for your help.
> From my perspective the Tomcat is working, responding and serving content.
>
> That leads to the thought, that the F5 is not evaluating the response correctly.
> In my opinion you should talk to the admins and ask them why they are not activating your service.
> The Healthcheck of the F5 usually checks for certain data. 404 responses are strange but may also work.
>
> The responses differ in size, so, there may be the problem (content and/or header differ!). The new response is larger, so it's not only missing the Server header!
The content size is different, but thats the default tomcat error
message, e.g.
<!DOCTYPE html>
<html>
<head>
<title>Apache Tomcat/8.0.45 - Error report</title>
<style type="text/css">H1
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;}
H2
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;}
H3
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;}
BODY
{font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;}
B
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;}
P
{font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A
{color : black;}A.name {color : black;}.line {height: 1px;
background-color: #525D76; border: none;}</style>
</head>
<body>
<h1>HTTP Status 404 - /</h1>
<div class="line"></div>
<p>
<b>type</b> Status report
</p>
<p>
<b>message</b>
<u>/</u>
</p>
<p>
<b>description</b>
<u>The requested resource is not available.</u>
</p>
<hr class="line">
<h3>Apache Tomcat/8.0.45</h3>
</body>
</html>
and changed a bit in 8.5, but there is definelty no check on the
content, because i created a empty index.html, then the response is
200/OK and content length is 0.
It is still working with 8.0 and not working with 8.5 again.
Many thanks in advance,
Bernd Wahlen
K2 Interactive GmbH
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Peter Kreuser <lo...@kreuser.name>.
Bernd,
> Am 01.08.2017 um 11:01 schrieb Bernd Wahlen <ab...@k2interactive.de>:
>
> Hi M, Peter and Christoph,
>
> >Have you tried taking the affected server out completely from the >farm? In this way, you have 4 tomcats seen by the loadbalancer. Once >you have done the upgrade, re-register this server with your load >balancer.
>
> >If not, can the F5 reach your server, can you reach the HC-page?
>
> i have no access to the load balancer, because it's shared infrastructure.
>
> >Also, have you checked whether your server.xml file and other settings
> >files are correct/as per your original settings - or is there any
> >adjustment that's required?
> >I am assuming that all you want to do is upgrade tomcat, so your >server.xml
> >should have the identical settings to your other 4 tomcats.
>
> of course: webapps, server.xml etc. all the same and if i make a request
> direct against the upgraded server - no problem at all.
>
> >Do the access logs contain anything on the server running 8.5.16?
>
> >Do you see F5-healthcheck-requests in your accesslogs? If so, did you >compare the old and new responses?
>
> tomcat 8.5
> 213.221.109.131 - - [01/Aug/2017:09:39:49 +0200] "GET / " 404 1070 "-" "-" "-"
> 213.221.109.130 - - [01/Aug/2017:09:39:51 +0200] "GET / " 404 1070 "-" "-" "-"
>
> tomcat 8.0
> 213.221.109.130 - - [01/Aug/2017:09:57:18 +0200] "GET / " 404 994 "-" "-" "-"
> 213.221.109.131 - - [01/Aug/2017:09:57:19 +0200] "GET / " 404 994 "-" "-" "-"
>
From my perspective the Tomcat is working, responding and serving content.
That leads to the thought, that the F5 is not evaluating the response correctly.
In my opinion you should talk to the admins and ask them why they are not activating your service.
The Healthcheck of the F5 usually checks for certain data. 404 responses are strange but may also work.
The responses differ in size, so, there may be the problem (content and/or header differ!). The new response is larger, so it's not only missing the Server header!
Peter
> The only difference that i see is that the Server Header is removed in 8.5 Server →Apache-Coyote/1.1
>
> But that is not the problem, i checked in both directions: adding
> the header to 8.5 and remove it from 8.0.
> I also tried to add a empty index.html to GET 200 for the health-
> checks, no changes.
>
> >Is the F5-HC checking for specific values, headers, response codes?
>
> from my point if view not, just a port 80 check without checking
> the response.
> >You can also use the default null Receive String value [""]. In this >case, any content retrieved is considered a match. If both the Send >String and Receive String are left empty, only a simple connection >check is performed.
> >https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm_configuration_guide_10_0_0/ltm_monitors.html
>
> >Are you actually using AJP between F5 and Tomcat? I would find that an
> >unusual setup... usually F5 -> Tomcat would be HTTP(S).
>
> I don't know if this connector is needed (maybe for https session stickyness - i don't know how it is working exactly) I just tested any port/connector to find differnences.
>
>
> Many thanks in advance,
>
> Bernd Wahlen
> K2 Interactive GmbH
>
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Bernd Wahlen <be...@k2interactive.de>.
Hi M, Peter and Christoph,
>Have you tried taking the affected server out completely from the
>farm? In this way, you have 4 tomcats seen by the loadbalancer. Once
>you have done the upgrade, re-register this server with your load
>balancer.
>If not, can the F5 reach your server, can you reach the HC-page?
i have no access to the load balancer, because it's shared infrastructure.
>Also, have you checked whether your server.xml file and other settings
>files are correct/as per your original settings - or is there any
>adjustment that's required?
>I am assuming that all you want to do is upgrade tomcat, so your
>server.xml
>should have the identical settings to your other 4 tomcats.
of course: webapps, server.xml etc. all the same and if i make a request
direct against the upgraded server - no problem at all.
>Do the access logs contain anything on the server running 8.5.16?
>Do you see F5-healthcheck-requests in your accesslogs? If so, did you
>compare the old and new responses?
tomcat 8.5
213.221.109.131 - - [01/Aug/2017:09:39:49 +0200] "GET / " 404 1070 "-"
"-" "-"
213.221.109.130 - - [01/Aug/2017:09:39:51 +0200] "GET / " 404 1070 "-"
"-" "-"
tomcat 8.0
213.221.109.130 - - [01/Aug/2017:09:57:18 +0200] "GET / " 404 994 "-"
"-" "-"
213.221.109.131 - - [01/Aug/2017:09:57:19 +0200] "GET / " 404 994 "-"
"-" "-"
The only difference that i see is that the Server Header is removed in
8.5 Server →Apache-Coyote/1.1
But that is not the problem, i checked in both directions: adding
the header to 8.5 and remove it from 8.0.
I also tried to add a empty index.html to GET 200 for the health-
checks, no changes.
>Is the F5-HC checking for specific values, headers, response codes?
from my point if view not, just a port 80 check without checking
the response.
>You can also use the default null Receive String value [""]. In this
>case, any content retrieved is considered a match. If both the Send
>String and Receive String are left empty, only a simple connection
>check is performed.
>https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm_configuration_guide_10_0_0/ltm_monitors.html
>Are you actually using AJP between F5 and Tomcat? I would find that an
>unusual setup... usually F5 -> Tomcat would be HTTP(S).
I don't know if this connector is needed (maybe for https session
stickyness - i don't know how it is working exactly) I just tested any
port/connector to find differnences.
Many thanks in advance,
Bernd Wahlen
K2 Interactive GmbH
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Re: No traffic after upgrade to Tomcat 8.5.16 (loadbalancing issue)
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Hash: SHA256
Bernd,
On 7/31/17 12:59 PM, Bernd Wahlen wrote:
>
> We are running a cluster of 5 tomcats behind a loadbalancer (shared
> big ip f5). Traffic is http, https and websocket. After upgrading
> one of the servers to Tomcat 8.5.16 this server get no traffic
> anymore. Everything is running fine until 8.0.45. If i connect
> directly against the node with 8.5, everything is running fine
> also, so it must be a issue related to the loadbalancing or
> loadbalancing checks.
>
> I read the changes and tries the following
>
> 1.)
> https://www.joedog.org/2016/02/28/test-connectivity-to-an-ajp-server-w
ith-ajping/
>
> => AJP is still working
Are you actually using AJP between F5 and Tomcat? I would find that an
unusual setup... usually F5 -> Tomcat would be HTTP(S).
> 2.) Configure CookieProcessor to LegacyCookieProcessor
>
> but no success. Any idea what to i can check or what changed
> related to that problem?
Do the access logs contain anything on the server running 8.5.16?
- -chris
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