Installing Sun JAVA in Ubuntu

By -

Step by step:

  1. Download JDK from Sun/Oracle. Choose bin version (not rpm). The file would be in form of jdk-version-platform.bin (in my case it was: jdk-6u25-linux-x64.bin )
  2. Add execution rights to the downloaded file

    $ chmod u+x jdk-6u25-linux-x64.bin
  3. Execute script. It will unpack its content to current directory (press Enter when asked)

    $ ./jdk-6u25-linux-x64.bin
    Now you should have directory i.e. jdk1.6.0_25/ with JDK files in it.
  4. Move unpacked JDK to final destination e.g. /opt/java/

    $ sudo mv jdk1.6.0_25/ /opt/java/
  5. Create symbolic link to that directory that will represent this JDK in general regardless current version. It will ease the future updates of JDK. I can any name. I have chosen sun-java6-manual

    $ cd /opt/java/
    $ sudo ln -s jdk1.6.0_25 sun-java6-manual
  6. Now create another symbolic link in /usr/lib/jvm pointing to previous one.

    $ cd /usr/lib/jvm/
    $ sudo ln -s /opt/java/sun-java6-manual
  7. I assume that you have already installed Sun JDK from Ubuntu repositories before. If this is the case then there should be .java-6-sun.jinfo file in/usr/lib/jvm/ directory. We will copy that file and modify it. If there is no such file you can download it to current directory with this command:

    $ sudo apt-get -d install sun-java6-bin && find /var/cache/apt/archives/ -iname sun-java6-bin* -exec ar -p '{}' data.tar.gz \; | tar -zxO ./usr/lib/jvm/.java-6-sun.jinfo | sudo tee .java-6-sun.jinfo

    You can delete it afterwards. The reason I am not using .java-6-openjdk.jinfofile that probably is present in your Ubuntu installation is that it is slightly different that Sun’s one (some browser plugin entries are missing).

    Copy file and replace path entries that they point to created link in /usr/lib/jvm/

    $ sudo sed s/java-6-sun/sun-java6-manual/ .java-6-sun.jinfo | sudo tee .sun-java6-manual.jinfo
  8. Now edit the beginning of file so it looks like below:

    $ sudo vim .sun-java6-manual.jinfo

    name=sun-java6-manual
    alias=sun-java6-manual
    priority=30

    Choose whatever priority you like.
  9. Now we have to register new alternatives in update-alternatives mechanism.

    $ cat .sun-java6-manual.jinfo | grep -E '^(jre|jdk)' | awk '{print "/usr/bin/" $2 " " $2 " " $3 " 30 \n"}' | xargs -t -n4 sudo update-alternatives --verbose --install
  10. Do the same with plugins

    $ sudo update-alternatives --verbose --install /usr/lib/mozilla/plugins/libjavaplugin.so mozilla-javaplugin.so /usr/lib/jvm/sun-java6-manual/jre/lib/amd64/libnpjp2.so 30

    $ sudo update-alternatives --verbose --install /usr/lib/xulrunner-addons/plugins/libjavaplugin.so xulrunner-1.9-javaplugin.so /usr/lib/jvm/sun-java6-manual/jre/lib/amd64/libnpjp2.so 30
  11. Now we are ready to switch default Java to the new one.

    $ update-java-alternatives -l
    It should list available java alternatives. It may look like:

    java-6-openjdk 1061 /usr/lib/jvm/java-6-openjdk
    java-6-sun 63 /usr/lib/jvm/java-6-sun
    sun-java6-manual 1500 /usr/lib/jvm/sun-java6-manual
  12. Set chosen option with:

    $ sudo update-java-alternatives -s sun-java6-manual
  13. Now confirm that java command is the new installed one

    $ java -version
    java version "1.6.0_25"
    Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
    Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)

Comments

Post a Comment

Popular posts from this blog

Scan FC LUN's in RHEL/CentOS

By -
1.First find out how many disks are visible in “fdisk -l” . # fdisk -l 2>/dev/null | egrep '^Disk' | egrep -v 'dm-' | wc -l 2.Find out how many host bus adapter configured in the Linux box.you can use “systool -fc_host -v” to verify available FC in the system. # ls /sys/class/fc_host host0 host1 In this case,you need to scan host0 & host1 HBA. 3.If the system virtual memory is too low ,then do not proceed further.If you have enough free virtual memory,then you can proceed with below command to scan new LUNS. # echo "1" > /sys/class/fc_host/host0/issue_lip # echo "1" > /sys/class/fc_host/host1/issue_lip Note:   You need to monitor the “issue_lip” in /var/log/messages to determine when the scan will complete.This operation is an asynchronous operation. 4.Verify if the new LUN is visible or not by counting the available disks. # fdisk -l 2>/dev/null | egrep '^Disk' | egrep -v 'dm-' | wc -l If any new
Read more

CEPH bluestore using ceph-ansible

By -
Just to test the ceph bluestore i have created 2 virtual machine in virtualbox with hostname: admin & osd1. Attached the 2 10G hdd for the OSD's in both the nodes. Below are the commands that i used to deploy it using the ceph-ansible: git clone https://github.com/ceph/ceph-ansible cd ceph-ansible cp group_vars/osds.yml.sample group_vars/osds.yml cp group_vars/all.yml.sample group_vars/all.yml cp group_vars/mons.yml.sample group_vars/mons.yml cp site.yml.sample site.yml vi group_vars/osds.yml     devices:    - /dev/sdb     - /dev/sdc bluestore : true vi group_vars/all.yml ceph_stable: true ceph_mirror: http://download.ceph.com/ ceph_stable_key: https://download.ceph.com/keys/release.asc ceph_stable_release: kraken ceph_stable_repo: "{{ ceph_mirror }}/rpm-{{ ceph_stable_release }}" monitor_interface: enp0s3 monitor_address: 192.xx.xx.xx osd_objectstore: bluestore ceph_conf_overrides:    global:    en
Read more

Start wildfly service with standalone-full.xml

By kris -
Wildfly provides a service.bat in %WILDFLY_HOME%\bin\service. Calling the batch file with the install parameter installs Wildfly as a service on Windows. Once it is installed on windows, you can change the settings so that wildfly starts all the modules and services instead of default minimal setup. For this, change standalone.bat file and add this line : set "SERVER_OPTS=--server-config=standalone-full.xml" This will enable startup of all modules & services of wildfly from now on.
Read more