Difference between revisions of "Running CTP as a Linux Service"

Latest revision as of 12:21, 13 August 2013

1 A word on Linux

To be accurate, the term Linux properly only refers to the Operating System kernel developed by Linus Torvalds. Linux distributions are then built on that kernel. Not all distrbutions are built the same way. There are two main families: those that use the RPM package system (Redhat, Fedora, CentOS, Scientific Linux, Suse, etc) and those that use the .Deb package systems (Debian, Ubuntu, Kubuntu, etc).

Those families further differ in how they manage system services. The .Deb family largely follows BSD style init scripts. The RPM family follows AT&T System V init scripts. To control CTP as a service (start, stop, get status) on your Linux distribution you must choose the proper tool from the two options below.

2 Init Scripts for Redhat (or similar) System V systems

The CTP/linux folder of the CTP installation now includes a new file called ctpService-red.sh. This file is internally documented, but in brief you must confirm that the variable settings in it match your environment settings. The simplest way to to this is the following. From the command line verify that the following will start CTP:

java -jar Runner.jar

If the above works, then we need only assure that the JAVA_HOME, JAVA_BIN, CLASSPATH and CTP_HOME settings in the script match the output of the "env" command. Once that is confirmed, do the following steps (where CTP_HOME is the true location of the CTP root folder):

ln -s /CTP_HOME/linux/ctpService-red.sh /etc/init.d/ctpService
chkconfig --add /etc/init.d/ctpService

This will install CTP as a service and it will autostart when the Linux distribution boots. All the normal service commands are now available:

/sbin/service ctpService start/stop/restart/status

Any questions or comments please email langer.steve@mayo.edu - Steve Langer.

3 Init scripts for Ubunutu (or similar) BSD systems

This is a small part of what the script described in Install or upgrade RSNA TFS (previously known as MIRC) on Ubuntu Linux will do automatically for you.
If you want to install MIRC on a Linux machine it is recommended you read the article above.
If you are here because you want to run an existing Linux installation of CTP or MIRC as a service, continue reading.

3.1 Using an UpStart script

Ubuntu and many other Linux distros use UpStart to run services. The below example assumes CTP is installed at

/usr/share/CTP/

You can modify it to suit a different locations.

Cut and paste the below code

description "CTP Service on Linux"
author "Tim Phillips <timothy.john.phillips@gmail.com>"

start on (local-filesystems and net-device-up IFACE!=lo)
stop on stopping network-services

respawn

expect fork

script
cd /usr/share/CTP/
java -jar ./CTP-runner.jar
end script

into a file named

/etc/init/CTP.conf

3.2 Commands to control the CTP service

To start CTP (it will start automatically when the machine boots)

start CTP

To stop CTP:

stop CTP

To check if CTP is running:

status CTP

To restart CTP:

restart CTP

Any questions or comments please email timothy.john.phillips@gmail.com - Tim Phillips.

Difference between revisions of "Running CTP as a Linux Service"

Latest revision as of 12:21, 13 August 2013

1 A word on Linux

2 Init Scripts for Redhat (or similar) System V systems

3 Init scripts for Ubunutu (or similar) BSD systems

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@@ Line 1: / Line 1: @@
-==Choice: Ubuntu Desktop or Server?==
+=== A word on Linux ===
-* Ubuntu Server
-** Makes more sense - MIRC is a web service after all.
-** Will be leaner and faster.
-** Can run on a headless server or virtual machine.
-* Ubuntu Desktop
-** Easier (very easy) if you're new to Linux.
-** May be very slightly slower but on modern hardware you are unlikely to notice the difference.
-== Instructions / script for installing the latest CTP/MIRC-Zn in Ubuntu ==
+To be accurate, the term Linux properly only refers to the Operating System kernel developed by Linus Torvalds. Linux ''distributions'' are then built on that kernel. Not all distrbutions are built the same way. There are two main families: those that use the RPM package system (Redhat, Fedora, CentOS, Scientific Linux, Suse, etc) and those that use the .Deb package systems (Debian, Ubuntu, Kubuntu, etc).
-===(If you're new to Linux) How to cut and paste the script below into a file and execute it===
+Those families further differ in how they manage system services. The .Deb family largely follows BSD style init scripts. The RPM family follows AT&T System V init scripts. To control CTP as a service (start, stop, get status) on your Linux distribution you must choose the proper tool from the two options below.
-* Open an editor
- nano ./install-MIRCn.sh
-* Cut and paste the code from the big box at the bottom of the page
-* Save the file and exit
- ctrl-O and then hit enter
- ctrl-X
-* Make it executable
- chmod 777 ./install-MIRCn.sh
-* Run it
- ./install-MIRCn.sh
-===What the script does===
+=== Init Scripts for Redhat (or similar) System V systems ===
-* Checks which chipset you're running
+The <b><tt>CTP/linux</tt></b> folder of the CTP installation now includes a new file called <b><tt>ctpService-red.sh</tt></b>. This file is internally documented, but in brief you must confirm that the variable settings in it match your environment settings. The simplest way to to this is the following. From the command line verify that the following will start CTP:
-* Enables the ubuntu partner repo (to get Oracle Java)
-* Answers the Java installation questions in advance
-* Installs SunJava and a few other necessary applications
-* Downloads the appropriate JAI ImageIO and fixes the inherent problem in the Linux release
-* Installs JAI ImageIO
-* Downloads the latest version of MIRC-Zn
-* Writes an upstart script (so that CTP/MIRC will be run as a service automatically)
-* Installs RSNA MIRC
-* If you have x-forwarding or are installing from Ubuntu Desktop ignore the below points
-** If you are logged in without X11 or X-forwarding this script will tell you and help you fix it.
-** By the time it gets to the part that needs X-forwarding it has installed the necessary libraries
-** You will need to exit and re login (ssh) in to the server with X-fowarding and run the MIRC-Installer.jar file
-** The script below will talk you through it.
-*** From a linux desktop to a linux server this is ssh -x username@host
-*** From a mac to a linux server this is ssh -Y username@host
-*** From a windows box you will need Putty and Xming X Server for MS Windows (google them).
-===The script===
+<pre>
-  #!/bin/bash
+java -jar Runner.jar
+</pre>
+If the above works, then we need only assure that the JAVA_HOME, JAVA_BIN, CLASSPATH and CTP_HOME settings in the script match the output of the "env" command. Once that is confirmed, do the following steps (where CTP_HOME is the true location of the CTP root folder):
+<pre>
+ln -s /CTP_HOME/linux/ctpService-red.sh /etc/init.d/ctpService
+chkconfig --add /etc/init.d/ctpService
+</pre>
+This will install CTP as a service and it will autostart when the Linux distribution boots. All the normal service commands are now available:
+<pre>
+/sbin/service ctpService start/stop/restart/status
+</pre>
+''Any questions or comments please email langer.steve@mayo.edu - Steve Langer.''
+=== Init scripts for Ubunutu (or similar) BSD systems ===
+* This is a small part of what the script described in [[Install or upgrade RSNA TFS (previously known as MIRC) on Ubuntu Linux]] will do automatically for you.
+* If you want to install MIRC on a Linux machine it is recommended you read the article above.
+* If you are here because you want to run an existing Linux installation of CTP or MIRC as a service, continue reading.
+''' 3.1 Using an UpStart script
+Ubuntu and many other Linux distros use UpStart to run services.
+The below example assumes CTP is installed at
+  /usr/share/CTP/
+You can modify it to suit a different locations.
- # Make sure only root can run our script
+Cut and paste the below code
- if [[ $EUID -ne 0 ]]; then
- echo "This script must be run as root or using sudo" 1>&2
+  description "CTP Service on Linux"
- exit 1
- fi
- #reassure the user something is happening
- echo 'Updating Ubuntu repositories ...'
- #work in the temp folder
- cd /var/tmp
- #check which chipset we're using
- case $(arch) in
- i686)
- CHIP=i586
- ;;
- x86_64)
- CHIP=amd64
- ;;
- *)
- ;;
- esac
- # partner repo
- echo deb http://archive.canonical.com/ lucid partner >>/etc/apt/sources.list.d/partner.list
- apt-get -qq update
- # preset the java answers:
- debconf-set-selections << END
- sun-java6-jdk shared/accepted-sun-dlj-v1-1 boolean true
- sun-java6-jre shared/accepted-sun-dlj-v1-1 boolean true
- sun-java6-bin shared/accepted-sun-dlj-v1-1 boolean true
- END
- #reassure the user something is happening
- echo 'Downloading and installing required ubuntu packages ...'
- # packages installed:
- apt-get install -y -qq acpid htop unzip xauth libxtst6 sun-java6-jdk
- #reassure the user something is happening
- echo 'Downloading JAI Image IO ...'
- # get jai binary
- if [ -f ./jai_imageio-1_1-lib-linux-$CHIP-jdk.bin ]; then
- rm ./jai_imageio-1_1-lib-linux-$CHIP-jdk.bin
- fi
- wget -q http://download.java.net/media/jai-imageio/builds/release/1.1/jai_imageio-1_1-lib-linux-$CHIP-jdk.bin
- #reassure the user something is happening
- echo 'Fixing the bug in JAI Image IO ...'
- # make it executable
- chmod 777 ./jai_imageio-1_1-lib-linux-$CHIP-jdk.bin
- # fix an inherent flaw in the file (thanks to JGrass for this)
- sed -i 's/+215/-n+215/' ./jai_imageio-1_1-lib-linux-$CHIP-jdk.bin
- # put it in the jdk folder
- mv ./jai_imageio-1_1-lib-linux-$CHIP-jdk.bin /usr/lib/jvm/java-6-sun/
- # execute the installer
- cd /usr/lib/jvm/java-6-sun/
- # if a previous version is here - get rid of it
- if [ -f UNINSTALL-jai_imageio ]; then
- echo 'Removing previous install of JAI ImageIO ...'
- bash UNINSTALL-jai_imageio
- echo -e
- echo 'Installing JAI ImageIO'
- fi
- echo -e
- echo 'You will be forced to wade through a long copyright'
- echo 'and asked to type in yes to agree at the end'
- echo 'Press enter ...'
- read dummy
- ./jai_imageio-1_1-lib-linux-$CHIP-jdk.bin
- #reassure the user something is happening
- echo 'Downloading RSNA MIRC Installer ...'
- # go to the target folder
- cd /usr/share
- # get MIRC installer
- if [ -f ./MIRC-installer.jar ]; then
- rm ./MIRC-installer.jar
- fi
- wget -q http://mirc.rsna.org/MIRC2/MIRC-installer.jar
- #reassure the user something is happening
- echo 'Writing an upstart script and putting it in /etc/init ...'
- # make an upstart script
- cat > /etc/init/MIRC-Zn.conf <<DELIM
-  description "MIRC Zn (CTP plugin not Tomcat)"
   author "Tim Phillips <timothy.john.phillips@gmail.com>"
@@ Line 155: / Line 60: @@
   java -jar ./CTP-runner.jar
   end script
- DELIM
- echo -e
- echo -e
- echo -e
- echo 'Now the RSNA installer will run'
- echo 'You will be asked to choose a folder to install CTP/MIRC into'
- echo 'It should be /usr/share or the startup script wont work'
- echo -e
- echo 'hit enter to continue'
- read dummy
- echo -e
- echo -e
- if [[ $(java -jar ./MIRC-installer.jar 2>&1 | grep X11) ]]
- then
- # have to re-login with X forwarding
- echo -e
- echo '================================================'
- echo 'NOT FINISHED YET!!!!'
- echo '================================================'
- echo -e
- echo 'X-forwarding is required for the MIRC installer'
- echo 'logout, type in exit and hit enter'
- echo 'and then login again from a machine with a screen....'
- echo 'From a mac: ssh -Y user@host'
- echo 'From a linux desktop: ssh -X user@host'
- echo 'If you are using windows you will need PuTTy and Xming (google them)'
- echo -e
- echo 'When you have logged in again re-run this script'
- else
- cd ~
- echo 'Starting MIRC web service (this will also happen automatically at boot) ...'
- start MIRC-Zn
- echo -e
- echo 'finished - it should all be running'
- echo 'point your browser to this server and have a look'
- fi
-<div align="right">''Any questions or comments please email me at timothy.john.phillips@gmail.com - Tim Phillips.''</div>
+into a file named
+ /etc/init/CTP.conf
+''' 3.2 Commands to control the CTP service
+To start CTP (it will start automatically when the machine boots)
+ start CTP
+To stop CTP:
+ stop CTP
+To check if CTP is running:
+ status CTP
+To restart CTP:
+ restart CTP
+''Any questions or comments please email timothy.john.phillips@gmail.com - Tim Phillips.''