Fedora (Obsolete)

This page is about Fedora 4, as used by the Digital Collections site. The focus is on important or frequently-used paths, scripts, log files and URLs on the fedora-stage and fedora-prod servers, as well as recipes helpful in development and troubleshooting.

AWS servers

The two EC2 servers that run Fedora are named fedora1-prod and fedora1-stage, respectively. See https://console.aws.amazon.com/ec2/v2/home?region=us-east-1#Instances for more info, such as IP addresses and server status.

Tomcat

Tomcat is the servlet container used in the production and staging environments. ( The dev and test environments use Jetty.) It is a Java program.

Version

• We're running version 7.0.52.0 .
• For more details:

  • /usr/share/tomcat7/bin/catalina.sh version

Source

• /usr/share/tomcat7/

Scripts

• /usr/share/tomcat7/bin/catalina.sh stop # stops Tomcat
• /usr/share/tomcat7/bin/catalina.sh start # starts Tomcat

Logs

• /var/lib/tomcat7/logs/catalina.out
• /var/lib/tomcat7/logs/localhost_access_log.2018-09-11.txt
• Settings /var/lib/tomcat7/conf/logging.properties

Basic settings:

• Users: /var/lib/tomcat7/conf/tomcat-users.xml
• Ports: /var/lib/tomcat7/conf/server.xml

Java

• Version: openjdk "1.8.0_171"
• Installed at /usr/lib/jvm/java-8-openjdk-amd64/

Fedora

• We're running Fedora version 4.7.3 .
• Installed in the Tomcat webapps directory: /var/lib/tomcat7/webapps/fedora
• Data directory: fcrepo.home=/opt/fedora-data
• The REST API is documented at https://wiki.duraspace.org/display/FEDORA4x/RESTful+HTTP+API
• Sample call to the API:
  • (this assumes you are logged in to either fedora1-prod or fedora1-stage)

  • curl -u fedoraAdmin:PASSWORD http://localhost:8080/fedora/rest/prod/kk/91/fk/64/kk91fk644

•  Locating files on the filesystem
  • The actual binaries are stored in /opt/fedora-data/fcrepo.binary.directory based on the premis:hasMessageDigest of the file.
  • Thus, for fileset

    • http://localhost:8080/fedora/rest/prod/bn/99/97/57/bn999757z/files/17734b07-d5e4-4d0e-abd3-02b55e9fa0db

  • you can run 

    • curl -u fedoraAdmin:PASSWORD "http://localhost:8080/fedora/rest/prod/bn/99/97/57/bn999757z/files/17734b07-d5e4-4d0e-abd3-02b55e9fa0db/fcr:metadata" | grep premis:hasMessageDigest

  • which returns

    •  premis:hasMessageDigest <urn:sha1:1e2498bb705ed62cd63ad64284dcda67ce14d4ee> ;

  • which means you will find the actual binary on the filesystem at

    • /opt/fedora-data/fcrepo.binary.directory/1e/24/98/1e2498bb705ed62cd63ad64284dcda67ce14d4ee .