Hi Alain
You would also have to replicate the SOLR DB.
Below are links to cluster technology for PostgreSQL and SOLR.
https://cwiki.apache.org/confluence/display/solr/SolrCloud
https://wiki.postgresql.org/wiki/Replication,_Clustering,_and_Connection_Pooling
Then there is the matter of replicating changes in configuration of the
master to the slave.
Perhaps rsync is the solution?
If you have the resources, simply use virtualization technology and cloud
replication, much simpler.
See: http://wiki.lib.sun.ac.za/index.php/OpenStack
Cheers
hg
*Hilton Gibson*
Ubuntu Linux Systems Administrator
JS Gericke Library
Room 1025C
Stellenbosch University
Private Bag X5036
Stellenbosch
7599
South Africa
Tel: +27 21 808 4100 | Cell: +27 84 646 4758
On 26 January 2015 at 19:43, Alain Tschanz <atsch...@njstatelib.org> wrote:
> I have a home-grown solution. Set up two identical servers (server1 and 2)
> and install DSpace on both of them. Server 1 is the main DSpace instance,
> server 2 the secondary.
> Make sure that both servers can talk to each without having to log in.
> Once that's working, do the following. Enter data on server 1 only. At the
> end of the day (or whenever) run a script that does this:
> 1. On server 1, make a database dump of the Postgres database and store
> it in a directory called backups. Add something like this code to your cron
> job:
> > /usr/bin/pg_dump --host "localhost" --port "5432" --username "postgres"
> --role "postgres" --no-password dspace | gzip > "/home/user/backups/$(date
> +%Y%m%d)_dspace.sql.gz"
>
> 2. From server 2 run rsync to copy the backed up database and all new
> bitstreams from server 1 to 2.
> > rsync -av server1:/home/user/backups /dspace (database)
> > rsync -av server1:/dspace/assetstore /dspace/assetstore/ (bitstreams)
>
> 3. Uncompress the backed up database.
> > gunzip $(date +%Y%m%d)_dspace.sql.gz
>
> 4. Stop the current dspace database on server 2.
> > psql -U postgres --no-password -c "select
> pg_terminate_backend(pg_stat_activity.pid) from pg_stat_activity where
> datname='dspace'"
>
> 5. Delete the dspace database.
> > dropdb -U postgres dspace
>
> 7. Create a new dspace database.
> > createdb -U postgres --owner=dspace --encoding=UNICODE dspace
>
> 8. Import the database into the database server running on server 2.
> psql -U postgres --no-password dspace < $(date +%Y%m%d)_dspace.sql
>
>
> -----Original Message-----
> From: dspace-tech-requ...@lists.sourceforge.net [mailto:
> dspace-tech-requ...@lists.sourceforge.net]
> Sent: Monday, January 19, 2015 4:20 AM
> To: dspace-tech@lists.sourceforge.net
> Subject: DSpace-tech Digest, Vol 105, Issue 41
>
> Send DSpace-tech mailing list submissions to
> dspace-tech@lists.sourceforge.net
>
> To subscribe or unsubscribe via the World Wide Web, visit
> https://lists.sourceforge.net/lists/listinfo/dspace-tech
> or, via email, send a message with subject or body 'help' to
> dspace-tech-requ...@lists.sourceforge.net
>
> You can reach the person managing the list at
> dspace-tech-ow...@lists.sourceforge.net
>
> When replying, please edit your Subject line so it is more specific than
> "Re: Contents of DSpace-tech digest..."
>
>
> Today's Topics:
>
> 1. DSpace crashes during the file upload process (Shixing Wen)
> 2. Dspace mirroring (Sila Too)
> 3. Problem faced in bitstream description section (Iyer M)
> 4. XMLUI theme matching problem (Hilton Gibson)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 16 Jan 2015 14:32:31 -0600
> From: Shixing Wen <s...@d.umn.edu>
> Subject: [Dspace-tech] DSpace crashes during the file upload process
> To: dspace-tech@lists.sourceforge.net
> Message-ID:
> <
> cabf-cs7672r9slcngjm65c5nh15dhqptt-mgxz6zeti0_yb...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> DSpace 4.1 jspui
>
> Our DSpace instance crashes quite often during the file upload process. It
> happens most at the stage of file upload but it also occurs at the stage of
> "I grant the license".
>
> Any clue to resolve this issue?
>
> Thanks,
>
> Shixing
> -----------------------------------------------
> Shixing Wen
> Head of Technical Services
> Kathryn A. Martin Library
> University of Minnesota Duluth
> 416 Library Drive
> Duluth, MN 55812
>
> 218-726-8498
> s...@d.umn.edu
> ------------------------------------------------
> -------------- next part --------------
> An HTML attachment was scrubbed...
>
> ------------------------------
>
> Message: 2
> Date: Sun, 18 Jan 2015 11:30:06 +0300
> From: Sila Too <sk...@outlook.com>
> Subject: [Dspace-tech] Dspace mirroring
> To: "dspace-tech@lists.sourceforge.net"
> <dspace-tech@lists.sourceforge.net>
> Message-ID: <dub126-w3707b8bfd429bac801de7db0...@phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello AllI would like to mirror more than two Dspace servers together. Any
> idea on how to go about it?S. Too
> -------------- next part --------------
> An HTML attachment was scrubbed...
>
> ------------------------------
>
> Message: 3
> Date: Mon, 19 Jan 2015 12:55:20 +0530
> From: Iyer M <rajiyer...@gmail.com>
> Subject: [Dspace-tech] Problem faced in bitstream description section
> To: dspace-tech <dspace-tech@lists.sourceforge.net>,
> "dspace-tech-requ...@lists.sourceforge.net"
> <dspace-tech-requ...@lists.sourceforge.net>
> Message-ID:
> <CAKsvMRJaCDDZzXQKzGh9G6gHNgNMaKozCCZDJ=
> xg_drqjy4...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear Community,
>
> We are using DSpace 4.2 JSPUI. Our server got shutdown due to un
> anticipated power cut and backup failure in an abrupt mode.
>
> Now we are not able to see following at bottom of Item page ("File in this
> Item" section):
>
> File
> Description
> Size
> Format
> View/Open Button
>
> Except for "View/Open Button" rest of labels are appearing but value for
> each of parameter along with "View/Open Button" is not appearing.
>
> You are requested to suggest, what corrections should be done for
> restoring the earlier state of solution.
>
> We are using DSpace on RHEL OS.
>
> Thanks in advance.
>
> Iyer
> -------------- next part --------------
> An HTML attachment was scrubbed...
>
> ------------------------------
>
> Message: 4
> Date: Mon, 19 Jan 2015 11:19:34 +0200
> From: Hilton Gibson <hilton.gib...@gmail.com>
> Subject: [Dspace-tech] XMLUI theme matching problem
> To: dspace-tech <dspace-tech@lists.sourceforge.net>
> Message-ID:
> <CAAV1Wv4oH7T8zsxpdQ-yoaEDjoZVj76-E28=
> p1qf9a-vrgy...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi All
>
> I am trying to "colourise" our faculty communities.
> See: http://scholar.sun.ac.za
> Here is the faculty palette:
> http://wiki.lib.sun.ac.za/index.php/SUNScholar/Theme/Color_Palette
> Attached is my "xmlui.xconf" file.
>
> The XMLUI does not seem to obey the "colourisation".
> I have tried the following to remedy this:
> 1. Sort faculty handles ascending and descending in the "xmlui.xconf".
> 2. For all themes, disable the browser caching in the "sitemap.xmap" files.
>
> I have installed the "cache killer" app in my Google Chrome browser to
> test if this is a cache problem. I have also reset the "java cache" in the
> XMLUI admin control panel to do testing.
>
> The page metadata correctly displays the theme name and path.
> See: http://scholar.sun.ac.za/?XML and
> http://scholar.sun.ac.za/handle/10019.1/1?XML
>
> I simply cannot find a cause, why the theme colour is not obeyed strictly
> per faculty.
> Any help appreciated. Depending on the responses to this question on the
> list, I may submit a bug report.
>
> This is supposed to be one the big selling points of the XMLUI, the
> ability to theme communities and collections etc..., but for me it does not
> work ;-(
>
> I suspect something in the following code is not robust.
> See:
>
> https://github.com/DSpace/DSpace/blob/master/dspace-xmlui/src/main/java/org/dspace/app/xmlui/cocoon/ThemeMatcher.java
>
> Cheers
>
> hg
>
> *Hilton Gibson*
> Ubuntu Linux Systems Administrator
> JS Gericke Library
> Room 1025C
> Stellenbosch University
> Private Bag X5036
> Stellenbosch
> 7599
> South Africa
>
> Tel: +27 21 808 4100 | Cell: +27 84 646 4758
> -------------- next part --------------
> An HTML attachment was scrubbed...
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: xmlui.xconf
> Type: application/octet-stream
> Size: 10552 bytes
> Desc: not available
>
> ------------------------------
>
>
> ------------------------------------------------------------------------------
> New Year. New Location. New Benefits. New Data Center in Ashburn, VA.
> GigeNET is offering a free month of service with a new server in Ashburn.
> Choose from 2 high performing configs, both with 100TB of bandwidth.
> Higher redundancy.Lower latency.Increased capacity.Completely compliant.
> http://p.sf.net/sfu/gigenet
>
> ------------------------------
>
> _______________________________________________
> DSpace-tech mailing list
> DSpace-tech@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/dspace-tech
>
>
> End of DSpace-tech Digest, Vol 105, Issue 41
> ********************************************
>
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is
> your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> DSpace-tech mailing list
> DSpace-tech@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/dspace-tech
> List Etiquette:
> https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
>
------------------------------------------------------------------------------
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
DSpace-tech mailing list
DSpace-tech@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dspace-tech
List Etiquette: https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
