- Make sure all packages are up to date and the package manager is up to date, then reboot:
```
# apt update && apt full-upgrade
# apt-get autoremove && apt-get autoclean
# dpkg -C
# reboot
```
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- Take some backups:
```
# dpkg -l > 2019-12-01-linode18-dpkg.txt
# tar czf 2019-12-01-linode18-etc.tar.gz /etc
```
- Then check all third-party repositories in /etc/apt to see if everything using "xenial" has packages available for "bionic" and then update the sources:
-<code># sed -i 's/xenial/bionic/' /etc/apt/sources.list.d/*.list</code>
- Pause the Uptime Robot monitoring for CGSpace
- Make sure the update manager is installed and do the upgrade:
```
# apt install update-manager-core
# do-release-upgrade
```
- After the upgrade finishes, remove Java 11, force the installation of bionic nginx, and reboot the server:
```
# apt purge openjdk-11-jre-headless
# apt install 'nginx=1.16.1-1~bionic'
# reboot
```
- After the server comes back up, remove Python virtualenvs that were created with Python 3.5 and re-run certbot to make sure it's working:
- Altmetric finally responded to my question about Dublin Core fields
- They shared a [list of fields they use for tracking](https://help.altmetric.com/support/solutions/articles/6000141419-what-metadata-is-required-to-track-our-content-), but it only mentions HTML meta tags, and not fields considered when harvesting via OAI
- Anyways, there might be some areas we can improve on the HTML meta tags, if I look at one [item with a DOI, ISSN, etc](https://hdl.handle.net/10568/101623) I see that we could at least add status (Open Access) and journal title
- I merged a [pull request](https://github.com/ilri/DSpace/pull/438) into the `5_x-prod` branch to add status and journal title to the XHTML meta tags