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Add notes for 2020-01-23

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Alan Orth
2020-01-23 12:46:39 +02:00
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@ -219,4 +219,30 @@ $ wc -l hung-nguyen-a*handles.txt
- Comparing the lists of items, I see that nine of the ten missing items were added less than twenty-four hours ago, and the other was added last week, so they apparently just haven't been indexed yet
- I am curious to check tomorrow to see if they are there
## 2020-01-23
- I checked AReS and I see that there are now 55 items for author "Hung Nguyen-Viet"
- Linode sent an alert that the outbound traffic rate of CGSpace (linode18) was high for several hours this morning around 5AM UTC+1
- I checked the nginx logs this morning for the few hours before and after that using goaccess:
```
# cat /var/log/nginx/*.log /var/log/nginx/*.log.1 | grep -E "23/Jan/2020:0[12345678]" | goaccess --log-format=COMBINED -
```
- The top two hosts according to the amount of data transferred are:
- 2a01:7e00::f03c:91ff:fe9a:3a37
- 2a01:7e00::f03c:91ff:fe18:7396
- Both are on Linode, and appear to be the new and old ilri.org servers
- I will ask the web team
- Judging from the [ILRI publications site](https://www.ilri.org/publications/trade-offs-related-agricultural-use-antimicrobials-and-synergies-emanating-efforts) it seems they are downloading the PDFs so they can generate higher-quality thumbnails:
- They are apparently using this Drupal module to generate the thumbnails: `sites/all/modules/contrib/pdf_to_imagefield`
- I see some excellent suggestions in this [ImageMagick thread from 2012](https://www.imagemagick.org/discourse-server/viewtopic.php?t=21589) that lead me to some nice thumbnails (default PDF density is 72, so supersample to 4X and then resize back to 25%) as well as [this blog post](https://duncanlock.net/blog/2013/11/18/how-to-create-thumbnails-for-pdfs-with-imagemagick-on-linux/):
```
$ convert -density 288 -filter lagrange -thumbnail 25% -background white -alpha remove -sampling-factor 1:1 -colorspace sRGB 10568-97925.pdf\[0\] 10568-97925.jpg
```
- Here I'm also explicitly setting the background to white and removing any alpha layers, but I could probably also just keep using `-flatten` like DSpace already does
- I wonder if I could hack this into DSpace code to get better thumbnails...
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