Release date: 2019-05-13
Last updated: 2019-05-13
The LOCKSS Program is pleased to announce that LOCKSS 2.0-alpha, the first publicly available prototype of its next-generation distributed digital preservation software suite, is now available for testing. LOCKSS 2.0-alpha is a technology preview, not intended for production installations.
The LOCKSS 2.0-alpha release features:
- Storage in the LOCKSS Repository Service, on top of Solr.
- Node configuration and state management in the LOCKSS Configuration Service
- Content ingest with the LOCKSS Crawler
- LOCKSS polling and repair with the LOCKSS Poller Service
- Metadata extraction and query in the LOCKSS Metadata Extraction Service and LOCKSS Metadata Service, on top of a [Postgres] database
- Web replay with LOCKSS ServeContent and Pywb, the state-of-the-art Web replay engine behind Webrecorder
In order to install and test the LOCKSS 2.0-alpha system, you will need:
- 64-bit Linux host (physical or virtual) with 4 cores and 8 GB of memory
- Docker running in Swarm mode and with the Local-Persist volume plugin
- Git to download a small project from GitHub
- The Setuptools and Pystache Python modules
Please contact us for questions, feedback and bug reports. Open a ticket by sending e-mail to
org. Your contribution toward the final LOCKSS 2.0 release is very important to us and greatly appreciated by the community.
Frequently Asked Questions
I have an existing LOCKSS system (version 1.x). Can I upgrade to LOCKSS 2.0-alpha?
The LOCKSS 2.0-alpha release is a technology preview which we are excited to share with the community for testing purposes. It is not yet possible to convert from a classic LOCKSS system (version 1.74.7) to a LOCKSS 2.0 system. To help us advance toward the final LOCKSS 2.0 release, please consider installing and running the LOCKSS 2.0-alpha release and providing us with your feedback.
Can I use my own Postgres database?
The LOCKSS 2.0-alpha system runs its own Postgres database. The LOCKSS 2.0-beta system will allow you to use your own Postgres database instead if you choose.
Can I use my own Solr database?
The LOCKSS 2.0-alpha system comes with its own Solr database. In the LOCKSS 2.0-beta system, you will be able to choose to use your own Solr database if you prefer.
Can I use the HDFS storage in my own Hadoop cluster?
The LOCKSS 2.0-alpha system spins up its own HDFS storage. The LOCKSS 2.0-beta system will enable you to connect to your own HDFS storage over an unanthenticated HDFS port. If there is interest in connecting the LOCKSS system to HDFS storage over a port authenticated via Kerberos, the LOCKSS team will include it as part of its future development roadmap.
Can I replay Web content with my own Pywb instance?
Yes, the LOCKSS 2.0-alpha system runs an embedded Pywb instance, but it is possible to configure your own Pywb instance to connect directly to the LOCKSS Repository Service. Contact us for instructions. The LOCKSS 2.0-beta will enable you to skip the embedded Pywb instance entirely.
Can I replay Web content with my own OpenWayback instance?
The LOCKSS 2.0-alpha system does not run an embedded OpenWayback instance, but it is possible to configure your own OpenWayback instance to connect directly to the LOCKSS Repository Service. Contact us for instructions. (The LOCKSS 2.0-beta will enable you to run an embedded OpenWayback instance if you choose.)