Обсуждение: PostgreSQL Minor Release Retention Policy
In a blog post, Devrim wrote: "This means, when there is new release available, we will delete n-3th one. This is a policy to keep the repo clean. This does not apply for PostgreSQL major releases”
I take it this actually means release and not version, right? For instance, last I checked we had 9.5.3-2, 9.5.4-1, and 9.5.4-2 in there. So if I know I’m on 9.5.4, I’m not automatically safe until 9.5.7… my package may disappear as soon as 9.5.5 if there is enough RPM release churn?
This makes it pretty unsafe to hardcode a full version specifier in e.g. a Dockerfile or other system meant to produce repeatable results, but I suppose people can just run their own package mirrors if they desire a different retention policy.
Just wanting some clarity on my interpretation, though. Thanks!
Вложения
Hi Jason, On Thu, 2016-10-06 at 14:04 -0600, Jason Petersen wrote: > In a blog post, Devrim wrote: "This means, when there is new release > available, we will delete n-3th one. This is a policy to keep the repo clean. > This does not apply for PostgreSQL major releases” > > I take it this actually means release and not version, right? For instance, > last I checked we had 9.5.3-2, 9.5.4-1, and 9.5.4-2 in there. So if I know > I’m on 9.5.4, I’m not automatically safe until 9.5.7… my package may > disappear as soon as 9.5.5 if there is enough RPM release churn? repomanage script, ( part of yum-utils and dnf) that we use for cleaning up old packages, has this option: -k KEEP, --keep=KEEP newest N packages to keep - defaults to 1 So, I set -k 3 in our sync scripts. What does it mean? Under normal circumstances, if we don't make any packaging mistakes, when we release 9.5.5, then 9.5.2 will be removed, so we'll keep the latest 3 versions. However, there is a minor potential problem in here: If we release 9.5.5-2, then 9.5.3 will be removed, so practically we'll have only 2 versions (?). > This makes it pretty unsafe to hardcode a full version specifier in e.g. a > Dockerfile or other system meant to produce repeatable results, but I suppose > people can just run their own package mirrors if they desire a different > retention policy. Right. Why do you hardcode postgresql RPMs in Dockerfile, btw? Regards, -- Devrim GÜNDÜZ EnterpriseDB: http://www.enterprisedb.com PostgreSQL Danışmanı/Consultant, Red Hat Certified Engineer Twitter: @DevrimGunduz , @DevrimGunduzTR