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Java 1.8 and CentOS

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  Java 1.8 and CentOS Duncan Idaho <duncan@dunenoemail.com> - 2016-04-13 15:04 +0100
    Re: Java 1.8 and CentOS Nigel Wade <nmw@ion.le.ac.uk> - 2016-04-13 15:42 +0100
      Re: Java 1.8 and CentOS Duncan Idaho <duncan@dunenoemail.com> - 2016-04-13 17:33 +0100
    Re: Java 1.8 and CentOS Andreas Leitgeb <avl@logic.at> - 2016-04-13 17:29 +0000
      Re: Java 1.8 and CentOS Andreas Leitgeb <avl@logic.at> - 2016-04-13 18:14 +0000
        Re: Java 1.8 and CentOS Duncan Idaho <duncan@dunenoemail.com> - 2016-04-14 05:18 +0100
          Re: Java 1.8 and CentOS Andreas Leitgeb <avl@logic.at> - 2016-04-14 10:44 +0000
    Re: Java 1.8 and CentOS Roedy Green <inquiry@mindprod.com> - 2016-07-17 11:56 -0700

#34123 — Java 1.8 and CentOS

This is probably off topic but I'm running out of ideas

I have 2 systems

1. Ubuntu Linux 12.10
2. CentOS Linux release 7.2.1511

Each system has the following identical setup

/opt/apache-tomcat-7.0.42

/opt/jdk1.7.0_45
/opt/jdk1.8.0_77

/etc/rc.d/init.d/tomcat7

This script starts tomcat as a unix daemon using jsvc
The script is included at the end of this message FYI

At the start of the script I set the version.

JAVA_HOME=/opt/jdk1.7.0_45

I then type

/etc/rc.d/init.d/tomcat7 start

and tomcat runs like a top on both systems

I then change the script thusly

JAVA_HOME=/opt/jdk1.8.0_77

invoking the script on Ubuntu starts the server

invoking the script on CentOS results in the following error message

Cannot find any VM in Java Home /opt/jdk1.8.0_77
Cannot locate JVM library file

If I set up a systemd service on CentOS and start tomcat under java 1.7

# systemctl start tomcat.service

results in a running server

exactly the same service where the java version is 1.8 fails with the
same message

Cannot find any VM in Java Home /opt/jdk1.8.0_77
Cannot locate JVM library file

I believe this message is coming from jsvc but cannot for the life of
me figure out why this is going wrong.

on CentOS

[root@vps logs]# java -version
java version "1.8.0_77"
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)

[root@vps logs]# echo $PATH
/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/lyallex/.local/bin:/home/lyallex/bin:/opt/jdk1.8.0_77/bin

So the vm is there on the path.

Does anyone have any idea how to fix this as for various reasons I need 
to get the server running on CentOS against Java 1.8

thanks
Duncan




==============================/etc/rc.d/init.d/tomcat7
============================
# chkconfig: - 71 19
# description:  Start up the Tomcat servlet engine.
# use java 7
# JAVA_HOME=/opt/jdk1.7.0_45
# java 8, works on Ubuntu, fails on CentOS
JAVA_HOME=/opt/jdk1.8.0_77
CATALINA_HOME=/opt/apache-tomcat-7.0.42
export JAVA_HOME CATALINA_HOME
CLASSPATH=$CATALINA_HOME/bin/bootstrap.jar:$CATALINA_HOME/bin/commons-daemon.jar:$JAVA_HOME/lib/tools.jar:$CATALINA_HOME/bin/tomcat-juli.jar
TOMCAT_USER=tomcat
TMPDIR=/var/tmp
PIDFILE=/var/run/tc7/jsvc.pid


RC=0

case "$1" in

   start)

    $CATALINA_HOME/bin/jsvc -user $TOMCAT_USER -home $JAVA_HOME
-Dcatalina.home=/opt/apache-tomcat-7.0.42
-Dcatalina.base=$CATALINA_HOME -Djava.io.tmpdir=$TMPDIR
-Djava.awt.headless=true \
      -Xms512m \
      -Xmx1024m \
      -outfile $CATALINA_HOME/logs/catalina.out \
      -errfile $CATALINA_HOME/logs/catalina.err \
      -pidfile '/var/run/tc7/jsvc.pid' \
      -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager \
 
-Djava.util.logging.config.file=$CATALINA_HOME/conf/logging.properties \
      -cp $CLASSPATH  \
      org.apache.catalina.startup.Bootstrap

     RC=$?

     [ $RC = 0 ] && touch /var/tc7lock/subsys/tomcat
     echo "starting tomcat7 on darkstar with:"
     echo "JAVA_HOME=$JAVA_HOME"
     echo "CATALINA_HOME=$CATALINA_HOME"
     echo "CLASSPATH=$CLASSPATH"
     echo "tomcat started"
     ;;

   stop)

     PID=`cat /var/run/tc7/jsvc.pid`
     kill $PID

    RC=$?

     [ $RC = 0 ] && rm -f /var/tc7lock/subsys/tomcat /var/run/tc7/jsvc.pid
     echo "stopping tomcat7 on darkstar with:"
     echo "JAVA_HOME=$JAVA_HOME"
     echo "CATALINA_HOME=$CATALINA_HOME"
     echo "CLASSPATH=$CLASSPATH"

     echo "tomcat stopped"
     ;;

   *)
         echo "Usage: $0 {start|stop}"
         exit 1
esac
exit $RC

[root@vps logs]#



-- 
Duncan Idaho

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#34124

On 13/04/16 15:04, Duncan Idaho wrote:

>
> JAVA_HOME=/opt/jdk1.8.0_77
>
> invoking the script on Ubuntu starts the server
>
> invoking the script on CentOS results in the following error message
>
> Cannot find any VM in Java Home /opt/jdk1.8.0_77
> Cannot locate JVM library file

What is actually in /opt/jdk1.8.0_77 on the CentOS system?

>
> [root@vps logs]# java -version
> java version "1.8.0_77"
> Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
> Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)
>
> [root@vps logs]# echo $PATH
> /usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/lyallex/.local/bin:/home/lyallex/bin:/opt/jdk1.8.0_77/bin
>
> So the vm is there on the path.
>

But not necessarily in /opt/jdk1.8.0_77/bin. /opt/jdk1.8.0_77/bin is on the PATH, but not necessarily being used to 
locate java.

Try:
$ which java
and follow the links to the actual executable.

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#34126

On 13/04/16 15:42, Nigel Wade wrote:
> On 13/04/16 15:04, Duncan Idaho wrote:
>
>>
>> JAVA_HOME=/opt/jdk1.8.0_77
>>
>> invoking the script on Ubuntu starts the server
>>
>> invoking the script on CentOS results in the following error message
>>
>> Cannot find any VM in Java Home /opt/jdk1.8.0_77
>> Cannot locate JVM library file
>
> What is actually in /opt/jdk1.8.0_77 on the CentOS system?

[root@vps lyallex]# ls -l /opt/jdk1.8.0_77/
total 25916
drwxr-xr-x. 2 tomcat tomcat     4096 Mar 21 05:09 bin
-r--r--r--. 1 tomcat tomcat     3244 Mar 21 05:09 COPYRIGHT
drwxr-xr-x. 4 tomcat tomcat     4096 Mar 21 05:09 db
drwxr-xr-x. 3 tomcat tomcat     4096 Mar 21 05:09 include
-rwxr-xr-x. 1 tomcat tomcat  5103536 Dec 22 20:48 javafx-src.zip
drwxr-xr-x. 5 tomcat tomcat     4096 Mar 21 05:09 jre
drwxr-xr-x. 5 tomcat tomcat     4096 Mar 21 05:09 lib
-r--r--r--. 1 tomcat tomcat       40 Mar 21 05:09 LICENSE
drwxr-xr-x. 4 tomcat tomcat       44 Mar 21 05:09 man
-r--r--r--. 1 tomcat tomcat      159 Mar 21 05:09 README.html
-rw-r--r--. 1 tomcat tomcat      525 Mar 21 05:09 release
-rw-r--r--. 1 tomcat tomcat 21102856 Mar 21 05:09 src.zip
-rwxr-xr-x. 1 tomcat tomcat   110114 Dec 22 20:48 
THIRDPARTYLICENSEREADME-JAVAFX.txt
-r--r--r--. 1 tomcat tomcat   177094 Mar 21 05:09 
THIRDPARTYLICENSEREADME.txt

>>
>> [root@vps logs]# java -version
>> java version "1.8.0_77"
>> Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
>> Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)
>>
>> [root@vps logs]# echo $PATH
>> /usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/lyallex/.local/bin:/home/lyallex/bin:/opt/jdk1.8.0_77/bin
>>
>>
>> So the vm is there on the path.
>>
>
> But not necessarily in /opt/jdk1.8.0_77/bin.

Er ... where is it then?

[root@vps lyallex]# ls -l /opt/jdk1.8.0_77/bin
total 772
...
-rwxr-xr-x. 1 tomcat tomcat   7734 Mar 21 05:09 java
-rwxr-xr-x. 1 tomcat tomcat   7941 Mar 21 05:09 javac
...

[root@vps lyallex]# ls -l /opt/jdk1.8.0_77/jre/bin
total 440
...
-rwxr-xr-x. 1 tomcat tomcat   7734 Mar 21 05:09 java
...

/opt/jdk1.8.0_77/bin is on
> the PATH, but not necessarily being used to locate java.
>
> Try:
> $ which java
> and follow the links to the actual executable.

[root@vps lyallex]# which java
/usr/bin/java

/usr/bin/java -> /etc/alternatives/java -> /opt/jdk1.8.0_77/bin/java

Obviously something is not configured correctly, I have set JAVA_HOME in 
my login account (root login is disabled)

JAVA_HOME=/opt/jdk1.8.0_77 which propagates to root when I su

[root@vps lyallex]# echo $JAVA_HOME
/opt/jdk1.8.0_77

Something isn't configured correctly but I have no idea what.
It's driving me nuts :-(

lyallex


-- 
Duncan Idaho

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#34127

Duncan Idaho <duncan@dunenoemail.com> wrote:
> Each system has the following identical setup
> /opt/apache-tomcat-7.0.42
> /opt/jdk1.7.0_45
> /opt/jdk1.8.0_77
> /etc/rc.d/init.d/tomcat7
> This script starts tomcat as a unix daemon using jsvc
> At the start of the script I set the version.
> JAVA_HOME=/opt/jdk1.7.0_45
> /etc/rc.d/init.d/tomcat7 start
> and tomcat runs like a top on both systems
> I then change the script thusly
> JAVA_HOME=/opt/jdk1.8.0_77
> invoking the script on Ubuntu starts the server
> invoking the script on CentOS results in the following error message
> Cannot find any VM in Java Home /opt/jdk1.8.0_77
> Cannot locate JVM library file

You can try to run yor scripts in a specific shell like e.g.
that:   bash -x /opt/apache-tomcat-7.0.42/bin/startup.sh 
It should then tell you everything that happened in this script.

>     $CATALINA_HOME/bin/jsvc -user $TOMCAT_USER -home $JAVA_HOME

My somewhat older tomcat here doesn't yet have a "jsvc" in its bin,
so I can't tell if that is a script itself or a native binary...

If it is a script, then try the bash -x prefix also on that.

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#34128

Andreas Leitgeb <avl@logic.at> wrote:
> Duncan Idaho <duncan@dunenoemail.com> wrote:
>> Each system has the following identical setup
>> /opt/apache-tomcat-7.0.42
>> /opt/jdk1.7.0_45
>> /opt/jdk1.8.0_77
>> /etc/rc.d/init.d/tomcat7
>> This script starts tomcat as a unix daemon using jsvc
> My somewhat older tomcat here doesn't yet have a "jsvc" in its bin,
I just installed jsvc directly (sudo apt-get install jsvc # ubuntu here)

and idly called:
$ jsvc -home $JAVA_HOME java.lang.Object
-> Nothing. Probably somewhere an error got logged about 
      java.lang.Object.main not existing, but I don't care.
$ jsvc -home /some/existing/but/empty/dir java.lang.Object
-> Cannot find any VM in Java Home /some/existing/but/empty/dir

Running the last one with "strace" showed, that it would try
a few locations inside the given java home to find libjvm.so . 

Running the exact  jsvc invocation as determined with bash -x 
(in my previous posting) with "strace" might reveal what's 
wrong on CentOS

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#34129

On 13/04/16 19:14, Andreas Leitgeb wrote:
> Andreas Leitgeb <avl@logic.at> wrote:
>> Duncan Idaho <duncan@dunenoemail.com> wrote:
>>> Each system has the following identical setup
>>> /opt/apache-tomcat-7.0.42
>>> /opt/jdk1.7.0_45
>>> /opt/jdk1.8.0_77
>>> /etc/rc.d/init.d/tomcat7
>>> This script starts tomcat as a unix daemon using jsvc
>> My somewhat older tomcat here doesn't yet have a "jsvc" in its bin,
> I just installed jsvc directly (sudo apt-get install jsvc # ubuntu here)
>
> and idly called:
> $ jsvc -home $JAVA_HOME java.lang.Object
> -> Nothing. Probably somewhere an error got logged about
>        java.lang.Object.main not existing, but I don't care.
> $ jsvc -home /some/existing/but/empty/dir java.lang.Object
> -> Cannot find any VM in Java Home /some/existing/but/empty/dir
>
> Running the last one with "strace" showed, that it would try
> a few locations inside the given java home to find libjvm.so .
>
> Running the exact  jsvc invocation as determined with bash -x
> (in my previous posting) with "strace" might reveal what's
> wrong on CentOS

Well this is interesting

[root@vps opt]# cd jdk1.7.0_45/
[root@vps jdk1.7.0_45]# find . -name libjvm.so
./jre/lib/i386/server/libjvm.so
./jre/lib/i386/client/libjvm.so

[root@vps opt]# cd jdk1.8.0_77/
[root@vps jdk1.8.0_77]# find . -name libjvm.so
./jre/lib/amd64/server/libjvm.so

furthermore

[root@vps bin]# ./jsvc -home /opt/jdk1.7.0_45 java.lang.Object
returns no error to stdout

[root@vps bin]# ./jsvc -home /opt/jdk1.8.0_77 java.lang.Object
Cannot find any VM in Java Home /opt/jdk1.8.0_77

hmm, err, so then
cd /opt/apache-tomcat-7.0.42/bin/commons-daemon-1.0.15-native-src/unix

# ./configure

Oh FFS, no gcc

# yum group install ..

# ./configure
# make

...
/usr/bin/ld: i386 architecture of input file `jsvc-unix.o' is 
incompatible with i386:x86-64 output
...

oh **** wrong processor architecture

go and get jdk-8u77-linux-i586.tar

unpack, change JAVA_HOME

/etc/rc.d/init.d/tomcat7 start

Oh joy, Tomcat now runs under Java 1.8

I knew someone here would have the answer.

It was a rookie mistake, wrong processor architecture, my excuse is that 
I'm tired after weeks of doing battle with a new server that uses 
systemd init as opposed to sysV init.d which is what I'm used to

Thanks Andreas

















-- 
Duncan Idaho

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#34130

Duncan Idaho <duncan@dunenoemail.com> wrote:
> Oh joy, Tomcat now runs under Java 1.8
> I knew someone here would have the answer.
>
> Thanks Andreas

You're welcome & thanks for reporting back :-)

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#34941

On Wed, 13 Apr 2016 15:04:13 +0100, Duncan Idaho
<duncan@dunenoemail.com> wrote:

>This is probably off topic but I'm running out of ideas
If this were a windows problem, I would get you to echo JAVA_HOME and
PATH.

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