Thanks Adam.
On Wed, May 4, 2011 at 10:02 AM, Serediuk, Adam < adam.sered...@serialssolutions.com> wrote: > Having a well known node configuration that is trivial (one step) to create > is your best maintenance bet. We are using 4 disk nodes in the following > configuration: > > disk1: boot_raid1 os_raid1 cassandra_commit_log > disk2: boot_raid1 os_raid1 cassandra_data_dir_raid0 > disk3: cassandra_data_dir_raid0 > disk4: cassandra_data_dir_raid0 > > This gives us a solid stable foundation for the OS and the recommended > configuration for cassandra commitlog and data dirs. Every node in the ring > can be replaced with a single command via cobbler to have a replacement > provisioned from bare metal to take over for a node if it fails. We will > never bother with repairing a node - we will replace it entirely upon > failure from bare metal. The node with the issue will be taken out of > service, the issue resolved and put back into a pool of spares. > > > On May 4, 2011, at 9:52 AM, Anthony Ikeda wrote: > > I wouldn't be concerned more about the performance with this configuration > I'm looking more form a maintenance perspective - I have to draft some > maintenance for our infrastructure team whom are used to a standard NAS > storage setup which Cassandra obviously breaks. > > Ultimately, would keeping the cassandra service separate from the data > and/or commit logs benefit from a recovery perspective where if we lose the > primary partition, we could restore that from the data that is still on the > secondary? > > What it considered best practice? > What kind of routine health checks are best to look for daily? monthly? > annually? > > Basically how do you up-skill a technical infrastructure team to be able to > maintain a Cassandra node ring? > > Anthony > > > > On Wed, May 4, 2011 at 9:39 AM, Eric tamme <eta...@gmail.com> wrote: > >> On Wed, May 4, 2011 at 12:25 PM, Anthony Ikeda >> <anthony.ikeda....@gmail.com> wrote: >> > I just want to ask, when setting up nodes in a Node ring is it >> worthwhile >> > using a 2 partition setup? i.e. Cassandra on the Primary, data >> directories >> > etc on the second partition or does it really not make a difference? >> > Anthony >> > >> >> >> I don't think it makes much difference from a performance perspective >> at all. You might want to create a separate LVM for your data, or >> entire /var >> > > >
