Re: Monitoring disk space from within the server
От | Tomas Vondra |
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Тема | Re: Monitoring disk space from within the server |
Дата | |
Msg-id | 20191108145025.d7pfcip6plufxiah@development обсуждение исходный текст |
Ответ на | Monitoring disk space from within the server (Christoph Berg <myon@debian.org>) |
Ответы |
Re: Monitoring disk space from within the server
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Список | pgsql-hackers |
On Fri, Nov 08, 2019 at 02:24:19PM +0100, Christoph Berg wrote: >Monitoring the available disk space is the topmost thing on the >priority for PostgreSQL operation, yet this metric is not available >from the SQL level. > While I agree monitoring disk space is important, I think pretty much every deployment already does that using some other monitoring tool (which also monitors million other things). Also, I wonder how universal / reliable this actually is, considering the range of filesystems and related stuff (thin provisioning, quotas, ...) people use in production. I do recall a number of cases when "df" was showing a plenty of free space, but one of the internal resources for that particular filesystem was exhausted. I doubt it's desirable to add all this knowledge into PostgreSQL. It's not clear to me what issue this is actually meant to solve - it provides data, which is nice, but it still needs to be fed to some motinoring and alerting system. And every monitoring system has a good plugin to collect this type of data, so why not to use that? Surely, we can't rely on this for any internal logic - so why not to provide this as an extension? regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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