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From: Jon Haddad <jonathan.haddad@gmail.com>
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Subject: Re: C* 3 node issue -Urgent
Date: Wed, 6 Sep 2017 11:40:02 -0700
References: <051D8450D5E7B340978CDEAEB0AEC843941B5A@EUSLMBX01.ldnoffice.tradeweb.com>
 <051D8450D5E7B340978CDEAEB0AEC843941BF8@EUSLMBX01.ldnoffice.tradeweb.com>
 <FD44BC37-57E9-4722-B7C5-26D9D73FE77F@gmail.com>
 <051D8450D5E7B340978CDEAEB0AEC843941EFA@EUSLMBX01.ldnoffice.tradeweb.com>
 <40331CDD-E92A-4821-B678-D5A2B7329959@gmail.com>
 <CAPbVhuNTxAYo3+a_SSJKm3MsYGkDYGexGezXVZ16iS08Wp8KAw@mail.gmail.com>
 <95710aa5-27cd-0e72-0e6c-7de621708996@sapo.pt>
To: user@cassandra.apache.org
In-Reply-To: <95710aa5-27cd-0e72-0e6c-7de621708996@sapo.pt>
Message-Id: <A7118812-F1FB-4CC2-9C20-B52A8C5EEC6B@gmail.com>
archived-at: Wed, 06 Sep 2017 18:40:16 -0000

I wouldn=E2=80=99t worry about being meticulous about keeping RF =3D N =
as the cluster grows.  If you had 60 nodes and your auth data was only =
on 9 you=E2=80=99d be completely fine. =20

> On Sep 6, 2017, at 11:36 AM, Cogumelos Maravilha =
<cogumelosmaravilha@sapo.pt> wrote:
>=20
> After insert a new node we should:
>=20
> ALTER KEYSPACE system_auth WITH REPLICATION =3D { 'class' : ...
> 'replication_factor' : x };
>=20
> x =3D number of nodes in dc
>=20
> The default user and password should work:
> -u cassandra -p cassandra
>=20
> Cheers.
>=20
> On 23-08-2017 11:14, kurt greaves wrote:
>> The cassandra user requires QUORUM consistency to be achieved for
>> authentication. Normal users only require ONE. I suspect your
>> system_auth keyspace has an RF of 1, and the node that owns the
>> cassandra users data is down.
>>=20
>> Steps to recover:
>> 1. Turn off authentication on all the nodes
>> 2. Restart the nodes and make sure they are UN
>> 3. Alter system_auth to have a higher RF than 1 (3 is probably
>> appropriate)
>> 4. Turn auth back on and restart
>> 5. Create a new user and use that from now on.
>>=20
>> =E2=80=8B
>=20
>=20
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>=20


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