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From Anuj Wadehra <>
Subject Re: Linux version update on DSE
Date Tue, 27 Jun 2017 17:43:15 GMT
Hi Nitan,
I think it would be simpler to take one node down at a time and replace it by bringing the
new node up after linux upgrade, doing same cassandra setup, using replace_address option
and setting autobootstrap=false ( as data is already there). No downtime as it would be a
rolling upgrade. No streaming as same tokens would work.
If you have latest C*, use replace_address_first_boot. If option not available, use replace_address
and make sure you remove it once new node is up.
Try it and let us know if it works for you.

  On Tue, Jun 27, 2017 at 4:56 AM, Nitan Kainth<> wrote:   Right, we
are just upgrading Linux on AWS. C* will remain at same version.

On Jun 26, 2017, at 6:05 PM, Hannu Kröger <> wrote:
I understood he is updating linux, not C*
On 27 June 2017 at 02:04:34, Jonathan Haddad ( wrote:

It sounds like you're suggesting adding new nodes in to replace existing ones.  You can't
do that because it requires streaming between versions, which isn't supported. 
You need to take a node down, upgrade the C* version, then start it back up.  
On Mon, Jun 26, 2017 at 3:56 PM Nitan Kainth <> wrote:

It's vnodes. We will add to replace new ip in yaml as well.

Thank you.

Sent from my iPhone

> On Jun 26, 2017, at 4:47 PM, Hannu Kröger <> wrote:
> Looks Ok. Step 1.5 would be to stop cassandra on existing node but apart from that looks
fine. Assuming you are using same configs and if you have hard coded the token(s), you use
the same.
> Hannu
>> On 26 Jun 2017, at 23.24, Nitan Kainth <> wrote:
>> Hi,
>> We are planning to update linux for C* nodes version 3.0. Anybody has steps who did
it recent past.
>> Here are draft steps, we are thinking:
>> 1. Create new node. It might have a different IP address.
>> 2. Detach mounts from existing node
>> 3. Attach mounts to new Node
>> 4. Start C*

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