Dalibo released temBoard Version 7.6 at the 10th of February 2021, which came with an important bug fix.
temboard-7.6-1.el7.noarch.rpm 10-Feb-2021 temboard-agent-7.6-1.el7.noarch.rpm 10-Feb-2021
This release fixes the ERROR: column “key” does not exist at character 262
2021-01-21 08:04:37.812 CET [24672] ERROR: column "key" does not exist at character 262 2021-01-21 08:04:37.812 CET [24672] STATEMENT: COPY( SELECT datetime AS date, SUM((record).n_rollback) AS rollback FROM metric_xacts_30m_current WHERE instance_id = 21 AND datetime >= '2021-01-19T07:04:37.736000+00:00'::timestamptz AND datetime <= '2021-01-21T07:04:37.736000+00:00'::timestamptz AND key = 'repmgr' GROUP BY datetime, instance_id ORDER BY datetime ) TO STDOUT WITH CSV HEADER
In case you want to see more about the issue, check out the following link.
https://github.com/dalibo/temboard/issues/888
To upgrade to the new version, simply follow the instructions from the blog:
https://ptdb.ch/2021/01/03/postgresql-how-to-upgrade-temboard-7-3-to-7-4/
Conclusion
Check out https://github.com/dalibo/temboard/ because cool new stuff is released regularly. 🙂