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Posted to user@zookeeper.apache.org by Nathaniel Domingo <na...@circos.com> on 2013/05/29 08:24:38 UTC
safely upgrade single instance to ensemble
Hi,
What do you think is the safest way of upgrading a single instance
zookeeper to an ensemble? The goal is not to loose any data.
Regards,
Nathaniel
Re: safely upgrade single instance to ensemble
Posted by Nathaniel Domingo <na...@circos.com>.
thanks for all your help. i successfully upgraded my zookeeper to an
ensemble. what i did is
updated the configuration and restarted the first node. then launched one
node. then launched another node.
i think the thing to remember is to launch the original node first so that
its data would be copied to the
other nodes.
On Wed, May 29, 2013 at 11:29 PM, kishore g <g....@gmail.com> wrote:
> Are you ok with shutting down zookeeper and clients ? If yes, then
>
> 1. shutdown existing zookeeper
> 2. copy zookeeper data and translog directory new locations
> 3. change the zoo.config on each server to include all 3 servers. see
> (
> http://zookeeper.apache.org/doc/r3.2.2/zookeeperStarted.html#sc_RunningReplicatedZooKeeper
> )
>
> Start the servers, change your clients to use all
> zk1:port1,zk2:port2,zk3:port3 in the connect string.
>
> thanks,
> Kishore G
>
> On Wed, May 29, 2013 at 2:54 AM, Kuba Lekstan <ku...@gmail.com> wrote:
> > Nothing bad should happen as long as you start your current ZK instance
> > before other.
> >
> > BTW: Before doing the change in production environment do some tests.
> >
> >
> > 2013/5/29 Nathaniel Domingo <na...@circos.com>
> >
> >> not existing cluster. zookeeper operating in standalone mode. i need to
> >> convert it into a cluster for redundancy.
> >>
> >>
> >> On Wed, May 29, 2013 at 4:34 PM, Kuba Lekstan <ku...@gmail.com>
> wrote:
> >>
> >> > Hello,
> >> >
> >> > If you want to just add one ZK node to existing cluster the easier and
> >> > safest way would be to do a rolling restart.
> >> >
> >> > Kuba.
> >> >
> >> >
> >> > 2013/5/29 Nathaniel Domingo <na...@circos.com>
> >> >
> >> > > Hi,
> >> > >
> >> > > What do you think is the safest way of upgrading a single instance
> >> > > zookeeper to an ensemble? The goal is not to loose any data.
> >> > >
> >> > > Regards,
> >> > > Nathaniel
> >> > >
> >> >
> >>
>
Re: safely upgrade single instance to ensemble
Posted by kishore g <g....@gmail.com>.
Are you ok with shutting down zookeeper and clients ? If yes, then
1. shutdown existing zookeeper
2. copy zookeeper data and translog directory new locations
3. change the zoo.config on each server to include all 3 servers. see
(http://zookeeper.apache.org/doc/r3.2.2/zookeeperStarted.html#sc_RunningReplicatedZooKeeper)
Start the servers, change your clients to use all
zk1:port1,zk2:port2,zk3:port3 in the connect string.
thanks,
Kishore G
On Wed, May 29, 2013 at 2:54 AM, Kuba Lekstan <ku...@gmail.com> wrote:
> Nothing bad should happen as long as you start your current ZK instance
> before other.
>
> BTW: Before doing the change in production environment do some tests.
>
>
> 2013/5/29 Nathaniel Domingo <na...@circos.com>
>
>> not existing cluster. zookeeper operating in standalone mode. i need to
>> convert it into a cluster for redundancy.
>>
>>
>> On Wed, May 29, 2013 at 4:34 PM, Kuba Lekstan <ku...@gmail.com> wrote:
>>
>> > Hello,
>> >
>> > If you want to just add one ZK node to existing cluster the easier and
>> > safest way would be to do a rolling restart.
>> >
>> > Kuba.
>> >
>> >
>> > 2013/5/29 Nathaniel Domingo <na...@circos.com>
>> >
>> > > Hi,
>> > >
>> > > What do you think is the safest way of upgrading a single instance
>> > > zookeeper to an ensemble? The goal is not to loose any data.
>> > >
>> > > Regards,
>> > > Nathaniel
>> > >
>> >
>>
Re: safely upgrade single instance to ensemble
Posted by Kuba Lekstan <ku...@gmail.com>.
Nothing bad should happen as long as you start your current ZK instance
before other.
BTW: Before doing the change in production environment do some tests.
2013/5/29 Nathaniel Domingo <na...@circos.com>
> not existing cluster. zookeeper operating in standalone mode. i need to
> convert it into a cluster for redundancy.
>
>
> On Wed, May 29, 2013 at 4:34 PM, Kuba Lekstan <ku...@gmail.com> wrote:
>
> > Hello,
> >
> > If you want to just add one ZK node to existing cluster the easier and
> > safest way would be to do a rolling restart.
> >
> > Kuba.
> >
> >
> > 2013/5/29 Nathaniel Domingo <na...@circos.com>
> >
> > > Hi,
> > >
> > > What do you think is the safest way of upgrading a single instance
> > > zookeeper to an ensemble? The goal is not to loose any data.
> > >
> > > Regards,
> > > Nathaniel
> > >
> >
>
Re: safely upgrade single instance to ensemble
Posted by Nathaniel Domingo <na...@circos.com>.
not existing cluster. zookeeper operating in standalone mode. i need to
convert it into a cluster for redundancy.
On Wed, May 29, 2013 at 4:34 PM, Kuba Lekstan <ku...@gmail.com> wrote:
> Hello,
>
> If you want to just add one ZK node to existing cluster the easier and
> safest way would be to do a rolling restart.
>
> Kuba.
>
>
> 2013/5/29 Nathaniel Domingo <na...@circos.com>
>
> > Hi,
> >
> > What do you think is the safest way of upgrading a single instance
> > zookeeper to an ensemble? The goal is not to loose any data.
> >
> > Regards,
> > Nathaniel
> >
>
Re: safely upgrade single instance to ensemble
Posted by Kuba Lekstan <ku...@gmail.com>.
Hello,
If you want to just add one ZK node to existing cluster the easier and
safest way would be to do a rolling restart.
Kuba.
2013/5/29 Nathaniel Domingo <na...@circos.com>
> Hi,
>
> What do you think is the safest way of upgrading a single instance
> zookeeper to an ensemble? The goal is not to loose any data.
>
> Regards,
> Nathaniel
>