cgspace-notes/content/2016-05.md

+++ date = "2016-05-01T23:06:00+03:00" author = "Alan Orth" title = "May, 2016" tags = ["notes"] image = "../images/bg.jpg"

+++

2016-05-01

• Since yesterday there have been 10,000 REST errors and the site has been unstable again
• I have blocked access to the API now
• There are 3,000 IPs accessing the REST API in a 24-hour period!

# awk '{print $1}' /var/log/nginx/rest.log  | uniq | wc -l
3168

• The two most often requesters are in Ethiopia and Colombia: 213.55.99.121 and 181.118.144.29
• 100% of the requests coming from Ethiopia are like this and result in an HTTP 500:

GET /rest/handle/10568/NaN?expand=parentCommunityList,metadata HTTP/1.1

• For now I'll block just the Ethiopian IP
• The owner of that application has said that the NaN (not a number) is an error in his code and he'll fix it

2016-05-03

• Update nginx to 1.10.x branch on CGSpace
• Fix a reference to dc.type.output in Discovery that I had missed when we migrated to dc.type last month (#223)

2016-05-06

• DSpace Test is down, catalina.out has lots of messages about heap space from some time yesterday (!)
• It looks like Sisay was doing some batch imports
• Hmm, also disk space is full
• I decided to blow away the solr indexes, since they are 50GB and we don't really need all the Atmire stuff there right now
• I will re-generate the Discovery indexes after re-deploying
• Testing renew-letsencrypt.sh script for nginx

#!/usr/bin/env bash

readonly SERVICE_BIN=/usr/sbin/service
readonly LETSENCRYPT_BIN=/opt/letsencrypt/letsencrypt-auto

# stop nginx so LE can listen on port 443
$SERVICE_BIN nginx stop

$LETSENCRYPT_BIN renew -nvv --standalone --standalone-supported-challenges tls-sni-01 > /var/log/letsencrypt/renew.log 2>&1

LE_RESULT=$?

$SERVICE_BIN nginx start

if [[ "$LE_RESULT" != 0 ]]; then
    echo 'Automated renewal failed:'

    cat /var/log/letsencrypt/renew.log

    exit 1
fi

• Seems to work well

2016-05-10

• Start looking at more metadata migrations
• There are lots of fields in dcterms namespace that look interesting, like:
  • dcterms.type
  • dcterms.spatial
• Not sure what dcterms is...
• Looks like these were added in DSpace 4 to allow for future work to make DSpace more flexible
• CGSpace's dc registry has 96 items, and the default DSpace one has 73.