Error in apache mod-jk logs

[Loai Abdallatif]

Dear Colleagues
We installed apache with mod_jk that connected to tomcat workers on the
different machine, during monitoring the received requests we notice the
below error on mod_jk log, and after checking the worker log we find the
request received and logged in the access-log of the worker but the main
problem is Tomcat Instance is working and running while the apache shows
the below error.

also I requested static object from Tomcat worker , and the below error
didn't appear in modjk logs


[Sat Nov 03 13:06:20 2018][54448:140562048997120] [warn]
ajp_get_endpoint::jk_ajp_common.c (3372): Unable to get the free endpoint
for worker worker_app1 from 1 slots
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1343): could not get free endpoint for worker
worker_app1 (0 retries)
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1650): All tomcat instances failed, no more
workers left for recovery (attempt=1, retry=1)
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1670): All tomcat instances are busy or in error
state
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [error]
service::jk_lb_worker.c (1675): All tomcat instances failed, no more
workers left

[Christopher Schultz]

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Hash: SHA256

Loai,

Post by Loai Abdallatif
Dear Colleagues
We installed apache with mod_jk that connected to tomcat workers on
the different machine, during monitoring the received requests we
notice the below error on mod_jk log, and after checking the worker
log we find the request received and logged in the access-log of
the worker but the main problem is Tomcat Instance is working and
running while the apache shows the below error.
also I requested static object from Tomcat worker , and the below
error didn't appear in modjk logs
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [warn]
ajp_get_endpoint::jk_ajp_common.c (3372): Unable to get the free
endpoint for worker worker_app1 from 1 slots [Sat Nov 03 13:06:20
could not get free endpoint for worker worker_app1 (0 retries) [Sat
Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1650): All tomcat instances failed, no
more workers left for recovery (attempt=1, retry=1) [Sat Nov 03
13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1670): All tomcat instances are busy or in
error state [Sat Nov 03 13:06:20 2018][54448:140562048997120]
[error] service::jk_lb_worker.c (1675): All tomcat instances
failed, no more workers left

Are you *sure* the requests are getting through? Usually those errors
mean that the request never made it to a back-end Tomcat.

What kind of Apache MPM are you running (prefork, event, etc.)? What
configuration do you have for MaxWorkers/MaxRequests/MaxThreads/etc.
that are relevant for your MPM?

What does your Tomcat <Connector> configuration look like for AJP? How
many back-end Tomcat servers do you have?

- -chris
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[Loai Abdallatif]

The Application works smoothly but when I do may refresh on the browser ,
the error below occurs
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [warn]
ajp_get_endpoint::jk_ajp_common.c (3372): Unable to get the free endpoint
for worker worker_app1 from 1 slots
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1343): could not get free endpoint for worker
worker_app1 (0 retries)
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1650): All tomcat instances failed, no more
workers left for recovery (attempt=1, retry=1)
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1670): All tomcat instances are busy or in error
state
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [error]
service::jk_lb_worker.c (1675): All tomcat instances failed, no more
workers left

Post by Loai Abdallatif
Dear Colleagues
We installed apache with mod_jk that connected to tomcat workers on the
different machine, during monitoring the received requests we notice the
below error on mod_jk log, and after checking the worker log we find the
request received and logged in the access-log of the worker but the main
problem is Tomcat Instance is working and running while the apache shows
the below error.
also I requested static object from Tomcat worker , and the below error
didn't appear in modjk logs
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [warn]
ajp_get_endpoint::jk_ajp_common.c (3372): Unable to get the free endpoint
for worker worker_app1 from 1 slots
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1343): could not get free endpoint for worker
worker_app1 (0 retries)
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1650): All tomcat instances failed, no more
workers left for recovery (attempt=1, retry=1)
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [info]
service::jk_lb_worker.c (1670): All tomcat instances are busy or in error
state
[Sat Nov 03 13:06:20 2018][54448:140562048997120] [error]
service::jk_lb_worker.c (1675): All tomcat instances failed, no more
workers left