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https://issues.apache.org/jira/browse/SOLR-15967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17485262#comment-17485262
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Jan Høydahl commented on SOLR-15967:
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> I have to say I am saddened to hear that the solr project has not managed to
> make minor versions forward compatible and restrict breaking changes to only
> the major versions. I would have expected that automated updates can be
> applied at least until he next major version.
We stive to be compatible on minor releases. Nine out of ten times you will
succeed with an in-place rolling upgrade where you take down one node at a
time, upgrading the binaries between minor versions. But there have been
unintended breaks a few times, typically on binary transport serialization (in
some 7.x version) and for the Overseer serialization format (in 8.5) that would
have caused the cluster to halt if you did the upgrade without reading the
release notes or testing first.
> That being said: Is there no way to do a safe update? I have lots of small
> servers that I'd like to deploy solr as a full text index to and tending all
> of them for every update simply does not do. (I don't mind a downtime of a
> few minutes during the update).
If you are willing to stop and start the entire cluster during upgrade, some of
these issues would not be a problem. And if you are running "standalone"
servers without SolrCloud and Zookeeper enabled, there would be even fewer
worries. The index format in Lucene strives to achieve a N-1 compatibility
guarantee.
> Add rpm repo for red hat based distros
> --------------------------------------
>
> Key: SOLR-15967
> URL: https://issues.apache.org/jira/browse/SOLR-15967
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: packages
> Affects Versions: 8.11.1
> Environment: # uname -a
> Linux my.host 3.10.0-1160.53.1.el7.x86_64 #1 SMP Fri Jan 14 13:59:45 UTC 2022
> x86_64 x86_64 x86_64 GNU/Linux
> Reporter: Martin Häcker
> Priority: Major
> Labels: centos, centos7, debian, fedora, ubuntu
>
> Hi there,
> it's surprisingly hard to install Solr in a way where I can guarantee to
> automatically get updates, especially security updates in a reliable manner,
> as well as get a documented way to start / run Solr on my distro of choice.
> What I am really looking for is an official rpm repository (and probably a
> deb repo too) that I can add to my package manager and then install a package
> that will give me all the updates I want, as well as starts the database with
> a systemd file that is known good.
> I in particular am looking for a centos 7 repository.
> I think, that this would make installation of Solr so much easier.
> What do you say?
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