You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@solr.apache.org by Paul Ryder <pa...@greenwaymediatech.com> on 2023/02/03 09:53:00 UTC
Solr Master Reboot
Hi,
I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
Ta! Paul
Re: Solr Master Reboot
Posted by Paul Ryder <pa...@greenwaymediatech.com>.
Not a bad idea… or maybe even just a small shell script… ta!
Get Outlook for iOS<https://aka.ms/o0ukef>
________________________________
From: Michael Conrad <mi...@newsrx.com>
Sent: Friday, February 3, 2023 1:37:46 PM
To: users@solr.apache.org <us...@solr.apache.org>
Subject: Re: Solr Master Reboot
Create a small Java utility to loop through the cores and use SolrJ to
turn replication on/off for each core in turn?
On 2/3/23 08:30, Paul Ryder wrote:
> HI Shawn
>
> We are on 8.1.1 but upgrading soon... shame Solr doesn't have a master command to turn replication off for all cores at once...
>
> Cheers, Paul
>
> -----Original Message-----
> From: Shawn Heisey<ap...@elyograg.org>
> Sent: 03 February 2023 13:26
> To:users@solr.apache.org
> Subject: Re: Solr Master Reboot
>
> On 2/3/23 02:53, Paul Ryder wrote:
>> I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
> I would expect that to work. Hopefully you're on the latest release in whatever major version of Solr you're running.
>
> I *think* it would be a bug if that doesn't work.
>
> Thanks,
> Shawn
Re: Solr Master Reboot
Posted by Michael Conrad <mi...@newsrx.com>.
Create a small Java utility to loop through the cores and use SolrJ to
turn replication on/off for each core in turn?
On 2/3/23 08:30, Paul Ryder wrote:
> HI Shawn
>
> We are on 8.1.1 but upgrading soon... shame Solr doesn't have a master command to turn replication off for all cores at once...
>
> Cheers, Paul
>
> -----Original Message-----
> From: Shawn Heisey<ap...@elyograg.org>
> Sent: 03 February 2023 13:26
> To:users@solr.apache.org
> Subject: Re: Solr Master Reboot
>
> On 2/3/23 02:53, Paul Ryder wrote:
>> I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
> I would expect that to work. Hopefully you're on the latest release in whatever major version of Solr you're running.
>
> I *think* it would be a bug if that doesn't work.
>
> Thanks,
> Shawn
RE: Solr Master Reboot
Posted by Paul Ryder <pa...@greenwaymediatech.com>.
HI Shawn
We are on 8.1.1 but upgrading soon... shame Solr doesn't have a master command to turn replication off for all cores at once...
Cheers, Paul
-----Original Message-----
From: Shawn Heisey <ap...@elyograg.org>
Sent: 03 February 2023 13:26
To: users@solr.apache.org
Subject: Re: Solr Master Reboot
On 2/3/23 02:53, Paul Ryder wrote:
> I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
I would expect that to work. Hopefully you're on the latest release in whatever major version of Solr you're running.
I *think* it would be a bug if that doesn't work.
Thanks,
Shawn
Re: Solr Master Reboot
Posted by Shawn Heisey <ap...@elyograg.org>.
On 2/3/23 02:53, Paul Ryder wrote:
> I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
I would expect that to work. Hopefully you're on the latest release in
whatever major version of Solr you're running.
I *think* it would be a bug if that doesn't work.
Thanks,
Shawn
Re: Solr Master Reboot
Posted by Paul Ryder <pa...@greenwaymediatech.com>.
Excellent! Thanks…
Get Outlook for iOS<https://aka.ms/o0ukef>
________________________________
From: Walter Underwood <wu...@wunderwood.org>
Sent: Friday, February 3, 2023 6:08:22 PM
To: users@solr.apache.org <us...@solr.apache.org>
Subject: Re: Solr Master Reboot
Just reboot it. Solr will shut down all connections, interrupting any in-progress replication. The replication will be retried after it starts back up.
Failure of the master during replication has been safe for many years.
wunder
Walter Underwood
wunder@wunderwood.org
http://observer.wunderwood.org/ (my blog)
> On Feb 3, 2023, at 1:53 AM, Paul Ryder <pa...@greenwaymediatech.com> wrote:
>
> Hi,
>
> I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
>
> Ta! Paul
Re: Solr Master Reboot
Posted by Walter Underwood <wu...@wunderwood.org>.
Just reboot it. Solr will shut down all connections, interrupting any in-progress replication. The replication will be retried after it starts back up.
Failure of the master during replication has been safe for many years.
wunder
Walter Underwood
wunder@wunderwood.org
http://observer.wunderwood.org/ (my blog)
> On Feb 3, 2023, at 1:53 AM, Paul Ryder <pa...@greenwaymediatech.com> wrote:
>
> Hi,
>
> I have a standalone Solr with a master and 2 slaves. I need to resize/reboot the master whilst leaving the slaves up. Around 30 cores, so disabling replication for a few mins would be a pain, as it seems can only be done on a core-by-core basis. What's the best practise here? Simply take down the master and let the replication fail then eventually recover?
>
> Ta! Paul