Node down in a cluster.

Najeeb_Abdu_Ngb

Hi,

What will happen to the clients or data if a node down in the cluster?

clients will work noramlly and all data can be retrieved?

Thanks,
Najeeb 

Shobhit_Garg

Hi,

It depends on the ksafety of your cluster. If it is ksafe=1, then if one node goes down, then your database would keep running, though it would have some impact on performance. No data loss would be there and you can carry on your work.
And once you corrected the problem of down node and restarted it. It will go in recovery and recover the missing data from other UP nodes.

In case of ksafety=0, if a node goes down, your complete cluster will be shutdown and any data in the WOS would be lost.

Thanks,
Shobhit

Najeeb_Abdu_Ngb

Hi,

Thanks for fast reply,

I am not aware of about this ksafty. Can you please suggest a link to read ?

how to check it is ksafe=0 or 1 in a cluster?

Thanks,
Najeeb

K__1

A simple google search results in this link

https://my.vertica.com/docs/6.1.x/HTML/index.htm#10730.htm

Hope this helps. 

Najeeb_Abdu_Ngb

Thanks Karan