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Posted to users@tomcat.apache.org by "Yon, " <sg...@gmail.com> on 2015/07/01 04:24:30 UTC
application frequently down
Hi all, we have application that frequently down, from log
file(catalina.out) with the information below:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x0000003d66934012, pid=2956, tid=140037724735232
#
# JRE version: Java(TM) SE Runtime Environment (7.0_51-b13) (build
1.7.0_51-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode
linux-amd64 compressed oops)
# Problematic frame:
# C [libc.so.6+0x134012] __tls_get_addr@@GLIBC_2.3+0x134012
#
# Failed to write core dump. Core dumps have been disabled. To enable core
dumping, try "ulimit -c unlimited" before starting Java again
#
Anyone has idea what this error about? Thank you.
Re: application frequently down
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Yon,
On 7/3/15 2:04 AM, Yon, wrote:
> <!--APR library loader. Documentation at /docs/apr.html -->
> <Listener
> className="org.apache.catalina.core.AprLifecycleListener"
> SSLEngine="on" />
This is not enough to use APR.
> <Connector port="8080" protocol="HTTP/1.1"
> connectionTimeout="20000" redirectPort="8443" />
>
> [...]
>
> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
Neither of these <Connector> elements specifies the protocol, so
Tomcat will auto-choose between the APR connection and one of the Java
connectors (I can't tell you which, because you didn't say which
version of Tomcat you are using).
Tomcat can only use the APR connector if the tcnative library is
available. If you have no idea what's in use, the easiest thing to do
is take a thread dump[1] of the running JVM process and look at the
thread names for the request processors.
- -chris
[1]
http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_
running_webapp_.3F
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Re: application frequently down
Posted by "Yon, " <sg...@gmail.com>.
Christopher,
server.xml has this 'Apr' entry: <Listener
className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<Server port="8005" shutdown="SHUTDOWN">
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
-->
<!--APR library loader. Documentation at /docs/apr.html -->
<Listener className="org.apache.catalina.core.AprLifecycleListener"
SSLEngine="on" />
<!--Initialize Jasper prior to apps are loaded. Documentation at
/docs/jasper-howto.html -->
<Listener className="org.apache.catalina.core.JasperListener" />
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener
className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener
className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener
className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!-- Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
-->
<GlobalNamingResources>
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users
-->
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>
<!-- A "Service" is a collection of one or more "Connectors" that share
a single "Container" Note: A "Service" is not itself a "Container",
so you may not define subcomponents such as "Valves" at this level.
Documentation at /docs/config/service.html
-->
<Service name="Catalina">
<!--The connectors can use a shared executor, you can define one or
more named thread pools-->
<!--
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="4"/>
-->
<!-- A "Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking &
non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL HTTP/1.1 Connector on port 8080
-->
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
<Connector executor="tomcatThreadPool"
port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<!-- Define a SSL HTTP/1.1 Connector on port 8443
This connector uses the JSSE configuration, when using APR, the
connector should be using the OpenSSL style configuration
described in the APR documentation -->
<!--
<Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
maxThreads="150" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
-->
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<!-- An Engine represents the entry point (within Catalina) that
processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request, and passes
them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html -->
<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="localhost">
<!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<!--
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
-->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
<!-- This Realm uses the UserDatabase configured in the global JNDI
resources under the key "UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. -->
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- SingleSignOn valve, share authentication between web
applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common"
-->
<Valve className="org.apache.catalina.valves.AccessLogValve"
directory="logs"
prefix="localhost_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
</Engine>
</Service>
</Server>
On Thu, Jul 2, 2015 at 12:36 PM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> To whom it may concern,
>
> On 7/1/15 6:30 PM, Lee Chin, PAN wrote:
> > Chris, Can you advice how to verify tcactive is use in
> > environment?
> >
> > On Thu, Jul 2, 2015 at 4:26 AM, Christopher Schultz <
> > chris@christopherschultz.net> wrote:
> >
> > Yon,
> >
> > On 6/30/15 10:24 PM, Yon, wrote:
> >>>> Hi all, we have application that frequently down, from log
> >>>> file(catalina.out) with the information below:
> >>>>
> >>>>
> >>>> # # A fatal error has been detected by the Java Runtime
> >>>> Environment: # # SIGSEGV (0xb) at pc=0x0000003d66934012,
> >>>> pid=2956, tid=140037724735232 # # JRE version: Java(TM) SE
> >>>> Runtime Environment (7.0_51-b13) (build 1.7.0_51-b13) # Java
> >>>> VM: Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode
> >>>> linux-amd64 compressed oops) # Problematic frame: # C
> >>>> [libc.so.6+0x134012] __tls_get_addr@@GLIBC_2.3+0x134012 # #
> >>>> Failed to write core dump. Core dumps have been disabled. To
> >>>> enable core dumping, try "ulimit -c unlimited" before
> >>>> starting Java again # Anyone has idea what this error about?
> >>>> Thank you.
> >
> > Are you using tcnative? If so, what version?
> >
> > If not, this is a JVM bug.
>
> Check to see what you have in conf/server.xml. If you have the APR
> connector configured, then you are using tcnative. You can usually
> tell what kind of connector you have by looking at the names of the
> request-processing threads if you can't figure it out any other way.
>
> - -chris
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> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>
Re: application frequently down
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
To whom it may concern,
On 7/1/15 6:30 PM, Lee Chin, PAN wrote:
> Chris, Can you advice how to verify tcactive is use in
> environment?
>
> On Thu, Jul 2, 2015 at 4:26 AM, Christopher Schultz <
> chris@christopherschultz.net> wrote:
>
> Yon,
>
> On 6/30/15 10:24 PM, Yon, wrote:
>>>> Hi all, we have application that frequently down, from log
>>>> file(catalina.out) with the information below:
>>>>
>>>>
>>>> # # A fatal error has been detected by the Java Runtime
>>>> Environment: # # SIGSEGV (0xb) at pc=0x0000003d66934012,
>>>> pid=2956, tid=140037724735232 # # JRE version: Java(TM) SE
>>>> Runtime Environment (7.0_51-b13) (build 1.7.0_51-b13) # Java
>>>> VM: Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode
>>>> linux-amd64 compressed oops) # Problematic frame: # C
>>>> [libc.so.6+0x134012] __tls_get_addr@@GLIBC_2.3+0x134012 # #
>>>> Failed to write core dump. Core dumps have been disabled. To
>>>> enable core dumping, try "ulimit -c unlimited" before
>>>> starting Java again # Anyone has idea what this error about?
>>>> Thank you.
>
> Are you using tcnative? If so, what version?
>
> If not, this is a JVM bug.
Check to see what you have in conf/server.xml. If you have the APR
connector configured, then you are using tcnative. You can usually
tell what kind of connector you have by looking at the names of the
request-processing threads if you can't figure it out any other way.
- -chris
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Re: application frequently down
Posted by "Lee Chin, PAN" <pl...@gmail.com>.
Chris, Can you advice how to verify tcactive is use in environment?
On Thu, Jul 2, 2015 at 4:26 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Yon,
>
> On 6/30/15 10:24 PM, Yon, wrote:
> > Hi all, we have application that frequently down, from log
> > file(catalina.out) with the information below:
> >
> >
> > # # A fatal error has been detected by the Java Runtime
> > Environment: # # SIGSEGV (0xb) at pc=0x0000003d66934012, pid=2956,
> > tid=140037724735232 # # JRE version: Java(TM) SE Runtime
> > Environment (7.0_51-b13) (build 1.7.0_51-b13) # Java VM: Java
> > HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode linux-amd64
> > compressed oops) # Problematic frame: # C [libc.so.6+0x134012]
> > __tls_get_addr@@GLIBC_2.3+0x134012 # # Failed to write core dump.
> > Core dumps have been disabled. To enable core dumping, try "ulimit
> > -c unlimited" before starting Java again # Anyone has idea what
> > this error about? Thank you.
>
> Are you using tcnative? If so, what version?
>
> If not, this is a JVM bug.
>
> - -chris
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> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
Re: application frequently down
Posted by "Yon, " <sg...@gmail.com>.
Christopher, Is there anyway to check tactive? Thanks
On Thu, Jul 2, 2015 at 4:26 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Yon,
>
> On 6/30/15 10:24 PM, Yon, wrote:
> > Hi all, we have application that frequently down, from log
> > file(catalina.out) with the information below:
> >
> >
> > # # A fatal error has been detected by the Java Runtime
> > Environment: # # SIGSEGV (0xb) at pc=0x0000003d66934012, pid=2956,
> > tid=140037724735232 # # JRE version: Java(TM) SE Runtime
> > Environment (7.0_51-b13) (build 1.7.0_51-b13) # Java VM: Java
> > HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode linux-amd64
> > compressed oops) # Problematic frame: # C [libc.so.6+0x134012]
> > __tls_get_addr@@GLIBC_2.3+0x134012 # # Failed to write core dump.
> > Core dumps have been disabled. To enable core dumping, try "ulimit
> > -c unlimited" before starting Java again # Anyone has idea what
> > this error about? Thank you.
>
> Are you using tcnative? If so, what version?
>
> If not, this is a JVM bug.
>
> - -chris
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>
Re: application frequently down
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Yon,
On 6/30/15 10:24 PM, Yon, wrote:
> Hi all, we have application that frequently down, from log
> file(catalina.out) with the information below:
>
>
> # # A fatal error has been detected by the Java Runtime
> Environment: # # SIGSEGV (0xb) at pc=0x0000003d66934012, pid=2956,
> tid=140037724735232 # # JRE version: Java(TM) SE Runtime
> Environment (7.0_51-b13) (build 1.7.0_51-b13) # Java VM: Java
> HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode linux-amd64
> compressed oops) # Problematic frame: # C [libc.so.6+0x134012]
> __tls_get_addr@@GLIBC_2.3+0x134012 # # Failed to write core dump.
> Core dumps have been disabled. To enable core dumping, try "ulimit
> -c unlimited" before starting Java again # Anyone has idea what
> this error about? Thank you.
Are you using tcnative? If so, what version?
If not, this is a JVM bug.
- -chris
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