best way to update config of a running voldemort server

[Dallas Marlow]

I apologize if this is documented somewhere, but what would be the best way to update the cluster.xml value for a running voldemort server (embedded or standalone)?

[Arunachalam]

Look at the following shell script

https://github.com/voldemort/voldemort/blob/master/bin/vadmin.sh

[athirupa@athirupa-ld1 voldemort]$ bin/vadmin.sh meta set --help

NAME

  meta set - Set metadata on nodes

SYNOPSIS

  meta set <meta-key>=<meta-value>[,<meta-key2>=<meta-value2>] -u <url>

           [-n <node-id-list> | --all-nodes] [--confirm]

COMMENTS

  To set one metadata, please specify one of the following:

    cluster.xml (meta-value is cluster.xml file path)

    stores.xml (meta-value is stores.xml file path)

    slop.streaming.enabled

    partition.streaming.enabled

    readonly.fetch.enabled

    quota.enforcement.enabled

    rebalancing.source.cluster.xml

    rebalancing.steal.info.key

    offline

  To set a pair of metadata values, valid meta keys are:

    cluster.xml (meta-value is cluster.xml file path)

    stores.xml (meta-value is stores.xml file path)

Option                              Description                

------                              -----------                

--all-nodes                         select all nodes           

--confirm                           confirm dangerous operation

-h, --help                          show help menu             

--meta-set [meta-key>=<meta-file]   metadata key-file pairs    

-n, --node <Integer: node-id-list>  node id list               

-u, --url <url>                     bootstrap url              

bin/vadmin.sh meta set cluster.xml=<file> will update the cluster.xml

But this just sets the metadata, if you want to add new nodes or remove nodes, you need to complete the operation via other means before updating the metadata.

Thanks,

Arun.

On Mon, Jun 29, 2015 at 9:53 AM, Dallas Marlow <dallas...@gmail.com> wrote:

I apologize if this is documented somewhere, but what would be the best way to update the cluster.xml value for a running voldemort server (embedded or standalone)?

--
You received this message because you are subscribed to the Google Groups "project-voldemort" group.
To unsubscribe from this group and stop receiving emails from it, send an email to project-voldem...@googlegroups.com.
Visit this group at http://groups.google.com/group/project-voldemort.
For more options, visit https://groups.google.com/d/optout.

[Dallas Marlow]

I can provide a bit more context, I'm attempting to automate the replacement of a node in the cluster without restarting all voldemort instances if possible. the changes to cluster.xml would be replacing a particular node address and ports, but the size of the cluster and partition assignments would be unchanged. 

--
You received this message because you are subscribed to a topic in the Google Groups "project-voldemort" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/project-voldemort/4DU0iOiO1qY/unsubscribe.
To unsubscribe from this group and all its topics, send an email to project-voldem...@googlegroups.com.

[Arunachalam]

Please take a look at this.

https://github.com/voldemort/voldemort/blob/master/src/java/voldemort/tools/ReplaceNodeCLI.java

This automates most of the replacing of the node. Please let us know if you need further information.

Thanks,

Arun.