VM created. Work continues at https://phabricator.wikimedia.org/T308597

I'm going to go ahead and put this on row A. Here's a little snippet I used to look at the ganeti resource totals by row (python -m pip install pandas ipython first):

I downloaded the whole dashboard as json, edited the json to make the name have "TEST COPY", scp'd it to the superset host, and loaded it with:

Upgrading the VM worked for Turnilo, but Superset needs updating before it will work on Bullseye. Generally there's no guarantee that both staging services will be compatible with the same Debian version, so I say we split Turnilo staging onto its own server.

I forgot there's a way to upgrade a virtual machine's operating system: https://wikitech.wikimedia.org/wiki/Ganeti#Reinstall_/_Reimage_a_VM and I'm following that now for the superset / turnilo staging instance (an-tool1005).

Thanks for the explanation @BBlack, nothing to do here so I'll close this.

I merged the related patch, but when I restarted pybal it caused an alert, so I'm waiting for input from the traffic team before proceeding: https://phabricator.wikimedia.org/T308174

I tried out Superset 1.5 briefly but found it requires python 3.8, and an-tool1005 is currently running python 3.7. The error:

Here's the traceback of a 500 error I got:

[2022-05-04 17:25:52,664] ERROR in app: Exception on /api/query/stop [POST]
Traceback (most recent call last):
  File "/srv/quarry/venv/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/srv/quarry/venv/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/srv/quarry/venv/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/srv/quarry/venv/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/srv/quarry/venv/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/srv/quarry/venv/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "./quarry/web/api.py", line 152, in api_stop_query
    cur.execute("KILL %s;", (result_dictionary["connection_id"]))
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/cursors.py", line 148, in execute
    result = self._query(query)
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/cursors.py", line 310, in _query
    conn.query(q)
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/connections.py", line 548, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/connections.py", line 775, in _read_query_result
    result.read()
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/connections.py", line 1156, in read
    first_packet = self.connection._read_packet()
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/connections.py", line 725, in _read_packet
    packet.raise_for_error()
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/protocol.py", line 221, in raise_for_error
    err.raise_mysql_exception(self._data)
  File "/srv/quarry/venv/lib/python3.7/site-packages/pymysql/err.py", line 143, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.OperationalError: (1094, 'Unknown thread id: 8295086')

It's working! Visit https://superset-next.wikimedia.org/

Updated netbox status to "Active".

I sent out an email that all the named hosts, other than an-airflow, will be rebooted this Friday May 6 in a window from 17-19UTC (10am-12pm pacific).

If we merge https://gerrit.wikimedia.org/r/c/operations/puppet/+/779915/ that @BTullis and I came up with, we can do the following to reimage these hosts.

This is done. Since none of the views were changing but passing --replace-all was hanging since some views were currently in use, I told every "replace" prompt "no" with the following:

This seems to be resolved now that clouddb1021 has been reimaged successfully. I'll close this but if I'm missing something please reopen.

I did the reimage again just now and it worked fine selecting "No" when prompted to load missing firmware. @MoritzMuehlenhoff I misread your comment and didn't realize your change should have been submitted first, sorry!! Let me know if I can still be useful in testing that, but otherwise, this ticket can be closed. Thanks for your input everybody.

I reimaged the host back to Buster for now, which went smoothly. Replication lag is a few days behind but is catching up gradually: https://grafana.wikimedia.org/d/000000273/mysql?orgId=1&refresh=1m&var-job=All&var-server=clouddb1021&var-port=13311&viewPanel=6&from=now-5m&to=now

@Marostegui says I should tag @MoritzMuehlenhoff - hopefully we can all solve this together :)

Possibly relevant links thanks to @jhathaway:

Ok after some help with wmf-pt-kill in https://phabricator.wikimedia.org/T305974 and a patch to update netboot for other clouddb10xx hosts https://gerrit.wikimedia.org/r/c/operations/puppet/+/779557 the reimage of clouddb1014 went smoothly. I'm repooling all hosts and will continue with clouddb1015-1021 tomorrow.

Thank you both! Looks good 👍 👍

I forgot to tell netboot to treat these hosts as database hosts, which I have now done in https://gerrit.wikimedia.org/r/c/operations/puppet/+/779488

According to @hashar we can get node 12.22.5 by upgrading Debian to version 11 Bullseye (staging and production Turnilo run Debian 10). I'll try upgrading Debian on the staging host and see if the latest Turnilo works then.

I'll do this next week. To my knowledge these hosts are pretty much the same as the dbstore hosts I did this week for https://phabricator.wikimedia.org/T299481, except that there can be no downtime if I depool the hosts first.

Ah ok it appears we're now too far behind on nodejs versions

I made a patch for this, but the scap deploy to staging failed due to some error with locales:

Hi Product Analytics, superset 1.4.2 is ready to be tested on staging. Once we confirm there are no showstopping bugs we'll release it to production.

Ok, looks like the following will resolve it:

I thought I'd update the staging database to be the same as production before sharing superset staging widely, and I'm glad I did, because it looks like there's some sort of database issue with the update.

All the reimages are done. Thanks for your input @Marostegui and @Ladsgroup .

Looks like reimage went fine; the warning about icinga status is that the replication has not caught up, but I see the replication Seconds_Behind_Master decreasing over time.

I'm thinking about requiring superset-next to have 2fa for 2 reasons:

• since it's the staging environment for superset, it's more likely to have misconfigurations that would lead to security issues
• to test out what it would look like to eventually require 2fa for superset

I removed stat100* directories. All done!

I removed the data in stat1006. Thanks everyone.

Ok, I have removed the data on each stat host and also did a hdfd -rmdir on the empty hive database as well.

By declaring the host -> ip mappings using https://github.com/kelseyhightower/confd/blob/master/docs/templates.md#map earlier in the etcd template, we should be able to keep the data stored in etcd in line with the current node statuses; as simple as "pooled/not pooled". I'd prefer this, since repeating the ip address in etcd is a potential point of confusion.

Ok thanks for chiming in @Marostegui and @Ladsgroup. Here is my updated plan, and I'm planning to kick this off a week from today on April 5 at 15:00 UTC.

Superset 1.4.2 is running on superset-staging: an-tool1005. When making the change, I had to pin markupsafe to 2.0.1 since the default markupsafe it downloaded is not compatible with the version of flask that superset is using.