Location of Various TDS Directories

For performance and space reasons, you may want some TDS directories on larger and higher performance disks. For instance:

• The TDS configuration directory (content/thredds). If not in its entirety than perhaps these inparticular:
  • The TDS logs directory (content/thredds/logs).
  • The TDS cache directory (content/thredds/cache).
• The Tomcat logs directory (${TOMCAT_HOME}/logs).
• Data directories

Using Symbolic Links to Move Non-data Directories

The easiest way to change the location of non-data directories is with symbolic links. For instance, if Tomcat is installed on a smaller and/or lower performance disk (say /opt) but /data is a larger and higher performance disk, your ${TOMCAT_HOME} directory might look something like this:

my.server.edu: cd /opt/tdsA
my.server.edu: pwd
/opt/apache-tomcat-6.0.29-tdsA
my.server.edu: ll
total 128
-rw-r--r--   1 tomcat   tomcat     37950 Jul 19 07:01 LICENSE
-rw-r--r--   1 tomcat   tomcat       557 Jul 19 07:01 NOTICE
-rw-r--r--   1 tomcat   tomcat      8669 Jul 19 06:59 RELEASE-NOTES
-rw-r--r--   1 tomcat   tomcat      6670 Jul 19 07:01 RUNNING.txt
drwxr-xr-x   3 tomcat   tomcat      1024 Oct 24 06:42 bin/
drwxr-xr-x   4 tomcat   tomcat       512 Nov  1 18:14 conf/
lrwxrwxrwx   1 tomcat   tomcat        30 Aug 17 18:15 content -> /data/tds/tdsA/content/
drwxr-xr-x   2 tomcat   tomcat       512 Aug  9 15:02 lib/
lrwxrwxrwx   1 tomcat   tomcat        27 Aug 17 18:16 logs -> /data/tds/tdsA/logs/
drwxr-xr-x   2 tomcat   tomcat       512 Oct 22 12:04 temp/
drwxr-xr-x   7 tomcat   tomcat       512 Nov  1 18:33 webapps/
drwxr-xr-x   3 tomcat   tomcat       512 Aug  9 19:38 work/
my.server.edu:

Configuration Settings for Moving Non-data Directories

For some of the non-data directories, there are configuration settings available for changing their locations:

• Changing the location of the TDS configuration directory is describe here.
• The various cache directories (agg/, cdm/, wcs/ e.g.) can be configured with the dir child element of the various caching elements in the threddsConfig.xml file. However, we recommend using a symbolic link to move content/thredds instead (more detail here).

Locations of Data Directories

The location of your data directories is configured in your configuration catalog(s). So, if your data is located in /data/pub, you simply use the appropriate /data/pub locations in your various dataset configurations (datasetRoot, datasetScan, and featureCollection elements).

This document is maintained by Unidata and was last updated November 2010. Send comments to THREDDS support.