Hi all,
My problem today is not so simple at all! I already have some big cluster
in production. But, as of today my number of nodes is known and didn't
change too much. Tomorrow i plan to be more and more elastic. I won't know
the exact number of nodes at a given time, as it will depends on the load
and some auto-scaling rules.
All my platform is build with Chef, so i am able to determine the number of
nodes with some tips. But i have a lot of questions:
When i add a new master node, the minimum_master_nodes value is
re-calculated accordingly... Is this value propagated to the whole cluster
when the new master node come up ? Chef adapt the configuration of all es
nodes, but don't restart them when already running. Do i need to change
this value via a call to the API
(http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/cluster-update-settings.html)
? When i remove a node, i think i have no choice but calling the API to
reduce the minimum_master_nodes, am i right ?
Another question i have, is it a good idea to use unicast and defining all
master nodes in conf files, or do i need to define just multicast ?
And finally, i want to have a cluster between 2 zones, one is my actuel DC,
and the other one if an ec2 vpc... What's the best way to interface the 2
zones ? Unicast + Multicast and EC2 + unicast ? Do i need to list each
master node of the whole cluster in each conf files ?
Thanks in advance to the one who will try to answer me.
--
Nicolas Blanc.
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