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Posted to users@tomcat.apache.org by k9...@operamail.com on 2012/07/22 17:03:26 UTC
Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
I've installed
rpm -qa | grep -i ^tomcat
tomcat-lib-7.0.27-7.1.noarch
tomcat-docs-webapp-7.0.27-7.1.noarch
tomcat-javadoc-7.0.27-7.1.noarch
tomcat-webapps-7.0.27-7.1.noarch
tomcat-admin-webapps-7.0.27-7.1.noarch
tomcat-servlet-3_0-api-7.0.27-7.1.noarch
tomcat-7.0.27-7.1.noarch
tomcat-el-2_2-api-7.0.27-7.1.noarch
tomcat-jsp-2_2-api-7.0.27-7.1.noarch
with
update-alternatives --config java
There are 2 choices for the alternative java (providing
/usr/bin/java).
Selection Path Priority
Status
------------------------------------------------------------
0 /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java 17147
auto mode
* 1 /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java 17147
manual mode
2 /usr/lib64/jvm/jre-1.7.0-sun/bin/java 1700
manual mode
on
uname -a
Linux svr 3.1.10-1.16-desktop #1 SMP PREEMPT Wed Jun 27
05:21:40 UTC 2012 (d016078) x86_64 x86_64 x86_64
GNU/Linux
IPv4 is enabled on the server. The IPv6 stack is also enabled, and
necessarily configured as,
grep bindv6only /etc/sysctl.conf
net.ipv6.bindv6only = 1
I want Tomcat listening on the IPv4 localhost @ 127.0.0.1.
So, reading here -
http://tomcat.10.n6.nabble.com/Tomcat-uses-IPv6-td2164369.html#a2164371
- and elsewhere, I set
vi /etc/tomcat/tomcat.conf
...
JAVA_OPTS="Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true"
CATALINA_OPTS="Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true"
...
now, @ tomcat start,
ps ax | grep tomcat
6530 ? Sl 0:03 /etc/alternatives/jre/bin/java
-Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true
-Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true -classpath
:/usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar:/usr/share/java/commons-daemon.jar
-Dcatalina.base=/usr/share/tomcat
-Dcatalina.home=/usr/share/tomcat -Djava.endorsed.dirs=
-Djava.io.tmpdir=/var/cache/tomcat/temp
-Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
org.apache.catalina.startup.Bootstrap start
but, Tomcat still listens only on IPv6
netstat -pan --tcp | grep 8080
tcp 0 0 :::8080 :::*
LISTEN 6530/java
and is unavailable/unreachable @ 127.0.0.1
telnet 127.0.0.1 8080
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet ::1 8080
Trying ::1...
Connected to ::1.
Escape character is '^]'.
telnet>
has the method for getting Tomcat to listen only @ IPv4 changed for v7?
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RE: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: Tim Watts [mailto:tim@cliftonfarm.org]
> Subject: Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores
> 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
> Since you've told the OS to not allow IPv4 connections on IPv6 sockets,
> I believe you would need to configure a separate <Connector> on the same
> port for the IPv4 loopback address.
That shouldn't be necessary. But since the OP hasn't told us what his <Connector> configuration is, we can only speculate. An address setting of "0.0.0.0" in the sole <Connector> might be adequate. Need real information.
- Chuck
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Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
Hi,
On Sun, Jul 22, 2012, at 03:57 PM, Tim Watts wrote:
> But doing so would close the door on ::1, turning "prefer" into
> "require". Whereas binding on ::* allows both IPv6 & 4 in. I guess
> what's confusing in all this is that the "preferences" just deal with
> "outbound" addresses and connections (e.g. preferIPv4Stack means the JVM
> will send out IPv4 packets etc.).
>
> It's worth noting that, even if it did behave this way, you would still
> have needed to specify the loopback address. Otherwise Tomcat would
> have been accessible on any IPv4 address configured on the node. Just
> setting those properties would never have been sufficient for what you
> were really after.
I've read a bunch trying to get this straight. Lots of noise, and I was
still off track on the outbound vs inbound behavior.
"@ bug" insist that the behavior as is - which has managed to confuse
quite a few others as well, resulting in numerous suggestions to 'file a
bug' - is simply "a config problem" on my end, It seems they're happy
with that, and that this is expected/clear behavior. To each their own
...
Thanks for being patient and taking the time to clarify. Again, noted &
appreciated!
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Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by Tim Watts <ti...@cliftonfarm.org>.
On Sun, 2012-07-22 at 11:21 -0700, k9157@operamail.com wrote:
> On Sun, Jul 22, 2012, at 02:08 PM, Tim Watts wrote:
> > By default, Tomcat will listen on port 8080 on all available addresses
> > (IPv6 and 4, barring configuration settings at the OS level). The key
> > "word" in those java.net properties is "prefer" (i.e. not "require").
> > So the door is still open to IPv6 even with these properties.
>
>
> I still would presume that, given the specification of "prefer", when
> localhost is referenced, given the choice of either IPv4 or IPv6 in a
> functional dual-stack, that it *would* prefer and select IPv4, i.e.,
> 127.0.0.1.
>
But doing so would close the door on ::1, turning "prefer" into
"require". Whereas binding on ::* allows both IPv6 & 4 in. I guess
what's confusing in all this is that the "preferences" just deal with
"outbound" addresses and connections (e.g. preferIPv4Stack means the JVM
will send out IPv4 packets etc.).
It's worth noting that, even if it did behave this way, you would still
have needed to specify the loopback address. Otherwise Tomcat would
have been accessible on any IPv4 address configured on the node. Just
setting those properties would never have been sufficient for what you
were really after.
> apparently, not the case.
>
> clarification noted.
>
> cheers.
>
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>
Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
On Sun, Jul 22, 2012, at 08:42 PM, André Warnier wrote:
> You still have a Connector listening on port 8009 (and IPv6). You may
> want to disable that one too (the AJP connector), to match your above desires.
Of course. Now at,
netstat -pan --tcp | grep java
tcp 0 0 127.0.0.1:8080 0.0.0.0:*
LISTEN 29141/java
tcp 0 0 127.0.0.1:8005 0.0.0.0:*
LISTEN 29141/java
tcp 0 0 127.0.0.1:8009 0.0.0.0:*
LISTEN 29141/java
thanks!
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Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by André Warnier <aw...@ice-sa.com>.
By the way,
k9157@operamail.com wrote:
>
(previously) :
No. I want Tomcat7 to listen ONLY on one address: the IPv4 loopback @
127.0.0.1. No other IPv4 addresses, and no IPv6 addresses at all.
---
and
> netstat -pan --tcp | grep java
> tcp 0 0 127.0.0.1:8080 0.0.0.0:*
> LISTEN 25254/java
> tcp 0 0 127.0.0.1:8005 :::*
> LISTEN 25254/java
> tcp 0 0 :::8009 :::*
> LISTEN 25254/java
>
You still have a Connector listening on port 8009 (and IPv6). You may want to disable that
one too (the AJP connector), to match your above desires.
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Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
Hi,
On Sun, Jul 22, 2012, at 02:08 PM, Tim Watts wrote:
> > No. I want Tomcat7 to listen ONLY on one address: the IPv4 loopback @
> > 127.0.0.1. No other IPv4 addresses, and no IPv6 addresses at all.
> >
> Oh, that's easy: specify address="127.0.0.1" on your <Connector>.
it certainly appears to be:
vi /etc/tomcat/server.xml
...
<Connector port="8080" protocol="HTTP/1.1"
+ address="127.0.0.1"
connectionTimeout="20000"
redirectPort="8443" />
...
service tomcat start
netstat -pan --tcp | grep java
tcp 0 0 127.0.0.1:8080 0.0.0.0:*
LISTEN 25254/java
tcp 0 0 127.0.0.1:8005 :::*
LISTEN 25254/java
tcp 0 0 :::8009 :::*
LISTEN 25254/java
Thanks!
> By default, Tomcat will listen on port 8080 on all available addresses
> (IPv6 and 4, barring configuration settings at the OS level). The key
> "word" in those java.net properties is "prefer" (i.e. not "require").
> So the door is still open to IPv6 even with these properties.
I still would presume that, given the specification of "prefer", when
localhost is referenced, given the choice of either IPv4 or IPv6 in a
functional dual-stack, that it *would* prefer and select IPv4, i.e.,
127.0.0.1.
apparently, not the case.
clarification noted.
cheers.
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Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by Tim Watts <ti...@cliftonfarm.org>.
On Sun, 2012-07-22 at 10:32 -0700, k9157@operamail.com wrote:
> Hi,
>
> On Sun, Jul 22, 2012, at 01:24 PM, Tim Watts wrote:
> > On Sun, 2012-07-22 at 08:03 -0700, k9157@operamail.com wrote:
> > > Linux svr 3.1.10-1.16-desktop #1 SMP PREEMPT Wed Jun 27
> > > 05:21:40 UTC 2012 (d016078) x86_64 x86_64 x86_64
> > > GNU/Linux
> > >
> > > IPv4 is enabled on the server. The IPv6 stack is also enabled, and
> > > necessarily configured as,
> > >
> > > grep bindv6only /etc/sysctl.conf
> > > net.ipv6.bindv6only = 1
> > >
> > > I want Tomcat listening on the IPv4 localhost @ 127.0.0.1.
> >
> > So you want Tomcat to listen on all IPv6 addresses plus the IPv4
> > loopback address but no other IPv4 addresses?
>
> No. I want Tomcat7 to listen ONLY on one address: the IPv4 loopback @
> 127.0.0.1. No other IPv4 addresses, and no IPv6 addresses at all.
>
Oh, that's easy: specify address="127.0.0.1" on your <Connector>.
By default, Tomcat will listen on port 8080 on all available addresses
(IPv6 and 4, barring configuration settings at the OS level). The key
"word" in those java.net properties is "prefer" (i.e. not "require").
So the door is still open to IPv6 even with these properties.
BTW, not that it will impact you, but it's java.net.preferIPv6Addreses
(defaults to false):
> -Djava.net.preferIPv4Addresses=true
> Specifying a listener proptocol, address & port should be a fairly
> commonplace undertaking ...
>
> > Since you've told the OS to not allow IPv4 connections on IPv6 sockets,
> > I believe you would need to configure a separate <Connector> on the same
> > port for the IPv4 loopback address.
>
> Not sure if this, then, still holds.
>
Sounds like you don't need an additional <Connector>. Just modify the
existing one.
> I'd understaood that those 'use IPv4' -D options should do exactly what
> I intend to here. Apparently not, though ...
>
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Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
Hi,
On Sun, Jul 22, 2012, at 01:24 PM, Tim Watts wrote:
> On Sun, 2012-07-22 at 08:03 -0700, k9157@operamail.com wrote:
> > Linux svr 3.1.10-1.16-desktop #1 SMP PREEMPT Wed Jun 27
> > 05:21:40 UTC 2012 (d016078) x86_64 x86_64 x86_64
> > GNU/Linux
> >
> > IPv4 is enabled on the server. The IPv6 stack is also enabled, and
> > necessarily configured as,
> >
> > grep bindv6only /etc/sysctl.conf
> > net.ipv6.bindv6only = 1
> >
> > I want Tomcat listening on the IPv4 localhost @ 127.0.0.1.
>
> So you want Tomcat to listen on all IPv6 addresses plus the IPv4
> loopback address but no other IPv4 addresses?
No. I want Tomcat7 to listen ONLY on one address: the IPv4 loopback @
127.0.0.1. No other IPv4 addresses, and no IPv6 addresses at all.
Specifying a listener proptocol, address & port should be a fairly
commonplace undertaking ...
> Since you've told the OS to not allow IPv4 connections on IPv6 sockets,
> I believe you would need to configure a separate <Connector> on the same
> port for the IPv4 loopback address.
Not sure if this, then, still holds.
I'd understaood that those 'use IPv4' -D options should do exactly what
I intend to here. Apparently not, though ...
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Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by Tim Watts <ti...@cliftonfarm.org>.
On Sun, 2012-07-22 at 08:03 -0700, k9157@operamail.com wrote:
> Linux svr 3.1.10-1.16-desktop #1 SMP PREEMPT Wed Jun 27
> 05:21:40 UTC 2012 (d016078) x86_64 x86_64 x86_64
> GNU/Linux
>
> IPv4 is enabled on the server. The IPv6 stack is also enabled, and
> necessarily configured as,
>
> grep bindv6only /etc/sysctl.conf
> net.ipv6.bindv6only = 1
>
> I want Tomcat listening on the IPv4 localhost @ 127.0.0.1.
So you want Tomcat to listen on all IPv6 addresses plus the IPv4
loopback address but no other IPv4 addresses?
Since you've told the OS to not allow IPv4 connections on IPv6 sockets,
I believe you would need to configure a separate <Connector> on the same
port for the IPv4 loopback address.
>
> So, reading here -
> http://tomcat.10.n6.nabble.com/Tomcat-uses-IPv6-td2164369.html#a2164371
> - and elsewhere, I set
>
> vi /etc/tomcat/tomcat.conf
> ...
> JAVA_OPTS="Djava.net.preferIPv4Stack=true
> -Djava.net.preferIPv4Addresses=true"
> CATALINA_OPTS="Djava.net.preferIPv4Stack=true
> -Djava.net.preferIPv4Addresses=true"
> ...
>
> now, @ tomcat start,
>
> ps ax | grep tomcat
> 6530 ? Sl 0:03 /etc/alternatives/jre/bin/java
> -Djava.net.preferIPv4Stack=true
> -Djava.net.preferIPv4Addresses=true
> -Djava.net.preferIPv4Stack=true
> -Djava.net.preferIPv4Addresses=true -classpath
> :/usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar:/usr/share/java/commons-daemon.jar
> -Dcatalina.base=/usr/share/tomcat
> -Dcatalina.home=/usr/share/tomcat -Djava.endorsed.dirs=
> -Djava.io.tmpdir=/var/cache/tomcat/temp
> -Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
> org.apache.catalina.startup.Bootstrap start
>
> but, Tomcat still listens only on IPv6
>
> netstat -pan --tcp | grep 8080
> tcp 0 0 :::8080 :::*
> LISTEN 6530/java
>
> and is unavailable/unreachable @ 127.0.0.1
>
> telnet 127.0.0.1 8080
> Trying 127.0.0.1...
> telnet: connect to address 127.0.0.1: Connection refused
>
> telnet ::1 8080
> Trying ::1...
> Connected to ::1.
> Escape character is '^]'.
> telnet>
>
> has the method for getting Tomcat to listen only @ IPv4 changed for v7?
>
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
RE: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: k9157@operamail.com [mailto:k9157@operamail.com]
> Subject: Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores
> 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
> <Service name="Catalina">
> <Connector port="8080" protocol="HTTP/1.1"
> connectionTimeout="20000"
> redirectPort="8443" />
> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
> > Have you installed APR?
> yes.
Let's try two things, one at a time. First, turn off APR by setting the port 8080 protocol to:
"org.apache.coyote.http11.Http11NioProtocol"
Second (even if the above works), set the protocol back to the default and add address="0.0.0.0" and see what happens.
- Chuck
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Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
> What happens if you install a real Tomcat from tomcat.apache.org
same issue
> What do your <Connector> elements in your server.xml file look like?
It's out-of-the-box:
...
<Service name="Catalina">
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost">
...
> Have you installed APR?
yes.
apr-2-config --version
2.0.0
svn info `apr-2-config --srcdir` | egrep "URL|Revision"
URL: https://svn.apache.org/repos/asf/apr/apr/trunk
Revision: 1363601
> What's in the Tomcat logs
@ start,
ps ax | grep -i java
21972 ? Sl 0:03
/etc/alternatives/jre/bin/java
-Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true -classpath
:/usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar:/usr/share/java/commons-daemon.jar
-Dcatalina.base=/usr/share/tomcat
-Dcatalina.home=/usr/share/tomcat -Djava.endorsed.dirs=
-Djava.io.tmpdir=/var/cache/tomcat/temp
-Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
org.apache.catalina.startup.Bootstrap start
logs:
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.AprLifecycleListener init
INFO: Loaded APR based Apache Tomcat Native library 1.1.23.
==> catalina.out <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.AprLifecycleListener init
INFO: Loaded APR based Apache Tomcat Native library 1.1.23.
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.AprLifecycleListener init
INFO: APR capabilities: IPv6 [true], sendfile [true], accept
filters [false], random [true].
==> catalina.out <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.AprLifecycleListener init
INFO: APR capabilities: IPv6 [true], sendfile [true], accept
filters [false], random [true].
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-apr-8080"]
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-apr-8080"]
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-apr-8009"]
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-apr-8009"]
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.Catalina
load
INFO: Initialization processed in 667 ms
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.Catalina
load
INFO: Initialization processed in 667 ms
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
==> catalina.out <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.core.StandardEngine
startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.27
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.core.StandardEngine
startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.27
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/manager
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/manager
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/examples
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/examples
==> localhost.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Jul 22, 2012 10:46:04 AM
org.apache.catalina.core.ApplicationContext log
INFO: ContextListener:
attributeAdded('org.apache.jasper.compiler.TldLocationsCache',
'org.apache.jasper.compiler.TldLocationsCache@304e5770')
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/ROOT
==> catalina.out <==
Jul 22, 2012 10:46:04 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/ROOT
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/docs
==> catalina.out <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/docs
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/host-manager
==> catalina.out <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/host-manager
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/sample
==> catalina.out <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.HostConfig
deployDirectory
INFO: Deploying web application directory
/srv/tomcat/webapps/sample
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:05 AM org.apache.coyote.AbstractProtocol
start
INFO: Starting ProtocolHandler ["http-apr-8080"]
==> catalina.out <==
Jul 22, 2012 10:46:05 AM org.apache.coyote.AbstractProtocol
start
INFO: Starting ProtocolHandler ["http-apr-8080"]
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:05 AM org.apache.coyote.AbstractProtocol
start
INFO: Starting ProtocolHandler ["ajp-apr-8009"]
==> catalina.out <==
Jul 22, 2012 10:46:05 AM org.apache.coyote.AbstractProtocol
start
INFO: Starting ProtocolHandler ["ajp-apr-8009"]
==> catalina.2012-07-22.log <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.Catalina
start
INFO: Server startup in 760 ms
==> catalina.out <==
Jul 22, 2012 10:46:05 AM org.apache.catalina.startup.Catalina
start
INFO: Server startup in 760 ms
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RE: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4'
JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: k9157@operamail.com [mailto:k9157@operamail.com]
> Subject: Tomcat 7.0.27 listens only @IPv6 localhost, ignores
> 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
> I've installed
> rpm -qa | grep -i ^tomcat
> tomcat-lib-7.0.27-7.1.noarch
> tomcat-docs-webapp-7.0.27-7.1.noarch
> tomcat-javadoc-7.0.27-7.1.noarch
> tomcat-webapps-7.0.27-7.1.noarch
> tomcat-admin-webapps-7.0.27-7.1.noarch
> tomcat-servlet-3_0-api-7.0.27-7.1.noarch
> tomcat-7.0.27-7.1.noarch
> tomcat-el-2_2-api-7.0.27-7.1.noarch
> tomcat-jsp-2_2-api-7.0.27-7.1.noarch
What happens if you install a real Tomcat from tomcat.apache.org, rather than a mangled 3rd-party version?
What do your <Connector> elements in your server.xml file look like?
Have you installed APR?
What's in the Tomcat logs (assuming you can even find them with a 3rd-party installation)?
BTW. it's not necessary to set both CATALINA_OPTS and JAVA_OPTS. JAVA_OPTS is used for both Tomcat startup and shutdown, CATALINA_OPTS only for startup.
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
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Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
reading here on this issue:
"Re: Tomcat is only listening with ip6 and not ip4"
http://linux.derkeiler.com/Mailing-Lists/Debian/2009-12/msg01262.html
" ... Thus you should report a bug against Tomcat. Also
you can replace "net.ipv6.bindv6only=1" with
"net.ipv6.bindv6only=0" in your /etc/sysctl.d/ as a
temporary solution. ..."
filed ->
Bug 53583 - Tomcat 7.0.27 ignores 'use IPv4' JAVA_OPTS in tomcat.conf,
listens only @IPv6 localhost when separate IPv4/IPv6 sockets are
specified
https://issues.apache.org/bugzilla/show_bug.cgi?id=53583
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Re: Tomcat 7.0.27 listens only @IPv6 localhost,
ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force
IPv4?
Posted by k9...@operamail.com.
Hi,
On Sun, Jul 22, 2012, at 09:29 AM, Tony Anecito wrote:
> I do it at the OS level via the adaptor properties for windows. If your
> network does not support IPv6 I would disable it else you will get errors
> in your logs about IPv6 for like say DHCP assignment.
My network supports IPv6 just fine.
This server is configured for dual-stack, with separate sockets
specified for IPv4 & IPv6 as defined at:
https://www.kernel.org/doc/man-pages/online/pages/man7/ipv6.7.html
IPV6_V6ONLY (since Linux 2.4.21 and 2.6)
If this flag is set to true (nonzero),
then the socket is restricted to
sending and receiving IPv6 packets only.
In this case, an IPv4 and an
IPv6 application can bind to a single port
at the same time.
If this flag is set to false (zero), then
the socket can be used to
send and receive packets to and from an
IPv6 address or an IPv4-mapped
IPv6 address.
The argument is a pointer to a boolean
value in an integer.
The default value for this flag is defined
by the contents of the file
/proc/sys/net/ipv6/bindv6only. The
default value for that file is 0
(false).
In this config, any/all other apps on the box can be easily configured
to listen on IPv4 &/or IPv6.
I need Tomcat to listen/respond on IPv4 localhost @ 127.0.0.1.
Atm, it appears to be ignoring instructions to do so.
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Re: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
Posted by Tony Anecito <ad...@yahoo.com>.
I do it at the OS level via the adaptor properties for windows. If your network does not support IPv6 I would disable it else you will get errors in your logs about IPv6 for like say DHCP assignment.
Regards,
-Tony
--- On Sun, 7/22/12, k9157@operamail.com <k9...@operamail.com> wrote:
From: k9157@operamail.com <k9...@operamail.com>
Subject: Tomcat 7.0.27 listens only @IPv6 localhost, ignores 'use IPv4' JAVA_OPTS in tomcat.conf. How to correctly force IPv4?
To: users@tomcat.apache.org
Date: Sunday, July 22, 2012, 9:03 AM
I've installed
rpm -qa | grep -i ^tomcat
tomcat-lib-7.0.27-7.1.noarch
tomcat-docs-webapp-7.0.27-7.1.noarch
tomcat-javadoc-7.0.27-7.1.noarch
tomcat-webapps-7.0.27-7.1.noarch
tomcat-admin-webapps-7.0.27-7.1.noarch
tomcat-servlet-3_0-api-7.0.27-7.1.noarch
tomcat-7.0.27-7.1.noarch
tomcat-el-2_2-api-7.0.27-7.1.noarch
tomcat-jsp-2_2-api-7.0.27-7.1.noarch
with
update-alternatives --config java
There are 2 choices for the alternative java (providing
/usr/bin/java).
Selection Path Priority
Status
------------------------------------------------------------
0 /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java 17147
auto mode
* 1 /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java 17147
manual mode
2 /usr/lib64/jvm/jre-1.7.0-sun/bin/java 1700
manual mode
on
uname -a
Linux svr 3.1.10-1.16-desktop #1 SMP PREEMPT Wed Jun 27
05:21:40 UTC 2012 (d016078) x86_64 x86_64 x86_64
GNU/Linux
IPv4 is enabled on the server. The IPv6 stack is also enabled, and
necessarily configured as,
grep bindv6only /etc/sysctl.conf
net.ipv6.bindv6only = 1
I want Tomcat listening on the IPv4 localhost @ 127.0.0.1.
So, reading here -
http://tomcat.10.n6.nabble.com/Tomcat-uses-IPv6-td2164369.html#a2164371
- and elsewhere, I set
vi /etc/tomcat/tomcat.conf
...
JAVA_OPTS="Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true"
CATALINA_OPTS="Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true"
...
now, @ tomcat start,
ps ax | grep tomcat
6530 ? Sl 0:03 /etc/alternatives/jre/bin/java
-Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true
-Djava.net.preferIPv4Stack=true
-Djava.net.preferIPv4Addresses=true -classpath
:/usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar:/usr/share/java/commons-daemon.jar
-Dcatalina.base=/usr/share/tomcat
-Dcatalina.home=/usr/share/tomcat -Djava.endorsed.dirs=
-Djava.io.tmpdir=/var/cache/tomcat/temp
-Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
org.apache.catalina.startup.Bootstrap start
but, Tomcat still listens only on IPv6
netstat -pan --tcp | grep 8080
tcp 0 0 :::8080 :::*
LISTEN 6530/java
and is unavailable/unreachable @ 127.0.0.1
telnet 127.0.0.1 8080
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet ::1 8080
Trying ::1...
Connected to ::1.
Escape character is '^]'.
telnet>
has the method for getting Tomcat to listen only @ IPv4 changed for v7?
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