CGSpace Notes

2019-03-01

• I checked IITA's 259 Feb 14 records from last month for duplicates using Atmire's Duplicate Checker on a fresh snapshot of CGSpace on my local machine and everything looks good
• I am now only waiting to hear from her about where the items should go, though I assume Journal Articles go to IITA Journal Articles collection, etc…
• Looking at the other half of Udana's WLE records from 2018-11
  • I finished the ones for Restoring Degraded Landscapes (RDL), but these are for Variability, Risks and Competing Uses (VRC)
  • I did the usual cleanups for whitespace, added regions where they made sense for certain countries, cleaned up the DOI link formats, added rights information based on the publications page for a few items
  • Most worryingly, there are encoding errors in the abstracts for eleven items, for example:
  • 68.15% � 9.45 instead of 68.15% ± 9.45
  • 2003�2013 instead of 2003–2013
• I think I will need to ask Udana to re-copy and paste the abstracts with more care using Google Docs

2019-02-01

• Linode has alerted a few times since last night that the CPU usage on CGSpace (linode18) was high despite me increasing the alert threshold last week from 250% to 275%—I might need to increase it again!
• The top IPs before, during, and after this latest alert tonight were:

# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "01/Feb/2019:(17|18|19|20|21)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
    245 207.46.13.5
    332 54.70.40.11
    385 5.143.231.38
    405 207.46.13.173
    405 207.46.13.75
   1117 66.249.66.219
   1121 35.237.175.180
   1546 5.9.6.51
   2474 45.5.186.2
   5490 85.25.237.71

• 85.25.237.71 is the “Linguee Bot” that I first saw last month
• The Solr statistics the past few months have been very high and I was wondering if the web server logs also showed an increase
• There were just over 3 million accesses in the nginx logs last month:

# time zcat --force /var/log/nginx/* | grep -cE "[0-9]{1,2}/Jan/2019"
3018243

real    0m19.873s
user    0m22.203s
sys     0m1.979s

2019-01-02

• Linode alerted that CGSpace (linode18) had a higher outbound traffic rate than normal early this morning
• I don't see anything interesting in the web server logs around that time though:

# zcat --force /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "02/Jan/2019:0(1|2|3)" | awk '{print $1}' | sort | uniq -c | sort -n | tail -n 10
     92 40.77.167.4
     99 210.7.29.100
    120 38.126.157.45
    177 35.237.175.180
    177 40.77.167.32
    216 66.249.75.219
    225 18.203.76.93
    261 46.101.86.248
    357 207.46.13.1
    903 54.70.40.11

2018-12-01

• Switch CGSpace (linode18) to use OpenJDK instead of Oracle JDK
• I manually installed OpenJDK, then removed Oracle JDK, then re-ran the Ansible playbook to update all configuration files, etc
• Then I ran all system updates and restarted the server

2018-12-02

• I noticed that there is another issue with PDF thumbnails on CGSpace, and I see there was another Ghostscript vulnerability last week

2018-11-01

• Finalize AReS Phase I and Phase II ToRs
• Send a note about my dspace-statistics-api to the dspace-tech mailing list

2018-11-03

• Linode has been sending mails a few times a day recently that CGSpace (linode18) has had high CPU usage
• Today these are the top 10 IPs:

2018-10-01

• Phil Thornton got an ORCID identifier so we need to add it to the list on CGSpace and tag his existing items
• I created a GitHub issue to track this #389, because I'm super busy in Nairobi right now

2018-09-02

• New PostgreSQL JDBC driver version 42.2.5
• I'll update the DSpace role in our Ansible infrastructure playbooks and run the updated playbooks on CGSpace and DSpace Test
• Also, I'll re-run the postgresql tasks because the custom PostgreSQL variables are dynamic according to the system's RAM, and we never re-ran them after migrating to larger Linodes last month
• I'm testing the new DSpace 5.8 branch in my Ubuntu 18.04 environment and I'm getting those autowire errors in Tomcat 8.5.30 again:

2018-08-01

• DSpace Test had crashed at some point yesterday morning and I see the following in dmesg:

[Tue Jul 31 00:00:41 2018] Out of memory: Kill process 1394 (java) score 668 or sacrifice child
[Tue Jul 31 00:00:41 2018] Killed process 1394 (java) total-vm:15601860kB, anon-rss:5355528kB, file-rss:0kB, shmem-rss:0kB
[Tue Jul 31 00:00:41 2018] oom_reaper: reaped process 1394 (java), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

• Judging from the time of the crash it was probably related to the Discovery indexing that starts at midnight
• From the DSpace log I see that eventually Solr stopped responding, so I guess the java process that was OOM killed above was Tomcat's
• I'm not sure why Tomcat didn't crash with an OutOfMemoryError…
• Anyways, perhaps I should increase the JVM heap from 5120m to 6144m like we did a few months ago when we tried to run the whole CGSpace Solr core
• The server only has 8GB of RAM so we'll eventually need to upgrade to a larger one because we'll start starving the OS, PostgreSQL, and command line batch processes
• I ran all system updates on DSpace Test and rebooted it

2018-07-01

• I want to upgrade DSpace Test to DSpace 5.8 so I took a backup of its current database just in case:

$ pg_dump -b -v -o --format=custom -U dspace -f dspace-2018-07-01.backup dspace

• During the mvn package stage on the 5.8 branch I kept getting issues with java running out of memory:

There is insufficient memory for the Java Runtime Environment to continue.