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introduction
This page tells you how to install Geoserver.
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Because it is CPU intensive, we take all measures recommended by Geoserver to improve performance.
java
The Geoserver team strongly recommends using the latest proprietary sun JDK.
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$ which java path_is_echoed_to_screen |
java installation (linux)
"Alternatives" is one way that to allow multiple versions of JVMs to run on a single host.
We do not have to use the alternatives framework - in fact for the tomcat init, we point to the jdk/jre directly.
todo - Could use some best practices here.
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- http://chrisschuld.com/2008/10/installing-sun-java-on-centos-5-2/
- an abort error at the end was OK
java advanced imaging (JAI)
To get the best performance, be sure to install the JAI libraries.
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- install java jdk not jre only
- if you use jre only subsequent step fails
- download the jai jre package
- wget "http://download.java.net/media/jai/builds/release/1_1_3/jai-1_1_3-lib-linux-i586-jre.bin"
- cd into your JDK's jre dir
- run /bin/sh /tmp/jai-1_1_3-lib-linux-i586-jre.bin
Is this a little bit counter-intuitive to you too?
java fonts
To get the nice fonts you are used to you need to install them on linux systems.
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I am not documenting because I think this will be slightly different on any given system.
tomcat
After installing java, try to start tomcat.
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TODO - applogic school
When want geoserver to have lots of memory, so we need to make sure the JVM under tomcat has the right JAVA_OPTS -Xmx. Is this simply set in the UI resources? Right now the MAX is at 64GB - which seems wrong. Someone spent a lot of time trying to intelligently pick an Xmx value in /appliance/appliance.sh. In any case, we want something right around 2-4GB here. Beyond that and GC may be overworked?
tomcat native acceleration
Concensus is that tomcat native acceleration is worth the trouble.
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Inspect tomcat log file to make sure it's working.
tomcat logging
TODO - logging should say when it is using tcnative or not.
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Geoserver takes care of its own logging.
tomcat test
To make sure it's working, ssh onto the host and
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and make sure there is a java process and see what port it is listening on.
tomcat configuration
The tomcat server configuration file is called server.xml.
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171 config[$index]=" <Connector port=\"${_tomcat_port}\" maxThreads=\"${_max_connections}\" address=\"in\" />" && ((index++))
config[$index]=" <Connector port=\"${_tomcat_port}\" maxThreads=\"${_max_connections}\" address=\"localhost\" />" && ((index++))
172 config[$index]=' <Connector port="8009" protocol="AJP/1.3" address="in" />' && ((index++))
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geoserver introduction
install
Download the war file, and drop it into the TOMCAT webapps dir.
Put the data dir in a separate location.
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Finally copy the configuration files into geoserver_configuration.
paletted images
We use a paletted images to improve map image quality and maintain performance.
- http://geoserver.org/display/GEOSDOC/Paletted+images+tutorial
- use IrfanView to create palatte files
- GEOSERVER_DATA_DIR/palletes/sfmaps.pal
applogic introduction
applogic startup sequence
- /appliance/appliance.sh
- overwrites /appliance/tomcat/conf/server.xml (1)
- sets tomcat port and max connections
- sources /etc/applogic.sh
- /etc/applogic.sh: key value paris written from applogic UI
- where does the UI application store data?
- sets tomcat port to 8080
- set and export JAVA_OPTS
- calls /usr/apache-tomcat-5.5.27/bin/startup.sh
- calls ./catalina.sh
- calls ./setclasspath.sh
- set JAVA_HOME
- set JRE_HOME
- set CATALINA_HOME
- set CLASSPATH
- execute java - tomcat startup
- calls ./catalina.sh
(1) but does not add in server-minimal.xml
this is why it does not listen on localhost!
applogic file system
The tomcat home is here
- /appliance/tomcat
which contain symlinks to - /mnt/fs/prod_app/
which is where we see web_apps and the like.