These sensors are part of their air quality measurements, which just
happen to be very close to our server room.
Reviewed-by: Aleix Boné <abonerib@bsc.es>
Allows us to track ambient temperature changes and estimate the
temperature delta between the server room and exterior temperature.
We should be able to predict when we would need to stop the machines due
to excesive temperature as summer approaches.
Reviewed-by: Aleix Boné <abonerib@bsc.es>
Allows us to see which derivations are being built in realtime. It is a
bit of a hack, but it seems to work. We simply look at the environment
of the child processes of nix-daemon (usually bash) and then look for
the $name variable which should hold the current derivation being
built. Needs root to be able to read the environ file of the different
nix-daemon processes as they are owned by the nixbld* users.
See: https://discourse.nixos.org/t/query-ongoing-builds/23486
Reviewed-by: Aleix Boné <abonerib@bsc.es>
Now that we have more space, we can extend the retention time to 5 years
to hold the monitoring metrics. For a year we have:
# du -sh /var/lib/prometheus2
13G /var/lib/prometheus2
So we can expect it to increase to about 65 GiB. In the future we may
want to reduce some adquisition frequency.
Reviewed-by: Aleix Boné <abonerib@bsc.es>
Allows sending Grafana alerts via email too, so we have a reduntant
mechanism in case Slack fails to deliver them.
Reviewed-by: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
The main website of the BSC is failing every day around 3:00 AM for
almost one hour, so it is not a very good target. Instead, google.com is
used which should be more reliable. The same robots.txt path is fetched,
as it is smaller than the main page.
Reviewed-by: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
As all other HTTPS probes pass through the opsproxy01.bsc.es proxy, we
cannot detect a problem in our proxy or in the BSC one. Adding another
target like bsc.es that doesn't use the ops proxy allows us to discern
where the problem lies.
Instead of monitoring https://www.bsc.es/ directly, which will trigger
the whole Drupal server and take a whole second, we just fetch robots.txt
so the overhead on the server is minimal (and returns in less than 10 ms).
Reviewed-by: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
The GitLab instance is in the /gitlab endpoint and may fail
independently of https://pm.bsc.es/.
Cc: Víctor López <victor.lopez@bsc.es>
Reviewed-by: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
The target gw.bsc.es doesn't reply to our ICMP probes from hut. However,
the anella hop in the tracepath is a good candidate to identify cuts
between the login and the provider and between the provider and external
hosts like Google or Cloudflare DNS.
Reviewed-By: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
These probes check if we can reach several targets via ICMP, which is
not proxied, so they can be used to see if ICMP forwarding is working in
the login node.
In particular, we test if we can reach the Google (8.8.8.8) and
Cloudflare (1.1.1.1) DNS servers, the BSC gateway which responds to ping
only from the intranet and the login node (ssfhead).
Reviewed-By: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
The alerts need to contact the slack endpoint, so we add the proxy
environment variables to the grafana systemd service.
Reviewed-By: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
