Re: Change from single region EC2 to multi-region

Thank you all for the help and ideas. In the end, this was a configuration issue in AWS, and not an issue with Cassandra. Regards On Tue, Aug 11, 2015 at 7:26 PM, Bryan Cheng wrote: > broadcast_address to public ip should be the correct configuration. > Assuming your firewall rules are all kos

Re: Change from single region EC2 to multi-region

broadcast_address to public ip should be the correct configuration. Assuming your firewall rules are all kosher, you may need to clear gossip state? http://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_gossip_purge.html -- Forwarded message -- From: Asher Newcomer Da

Re: Change from single region EC2 to multi-region

Use VPC Peering rather than VPN, More reliable. On Tue, Aug 11, 2015 at 5:14 PM, Prem Yadav wrote: > 1) There are ways to connect two VPCs using VPN. > 2) About the connectivity using public IP. Can you ping the one public ip > from another one in a different region. > If ping works, please chec

Re: Change from single region EC2 to multi-region

1) There are ways to connect two VPCs using VPN. 2) About the connectivity using public IP. Can you ping the one public ip from another one in a different region. If ping works, please check port connectivity using telnet. You can start a temp server on a port using netcat. If connectivity fails, y

Change from single region EC2 to multi-region

X-post w/ SO: link I have (had) a working 4 node Cassandra cluster setup in an EC2 VPC. Setup was as follows: 172.18.100.110 - seed - DC1 / RAC1 172.18.100.111 - DC1 / RAC1 172.18.100.112 - se

Re: Should maintenance repairs be run on system related keyspaces?

Hi Ken, As the "system" ks is "local" and repair is supposed to fix entropy, I would say no... And you now know how to find out the answer for other keyspace you include in "system related keyspaces" (If local, then no need, else it depends on the fact that some entropy is acceptable or not, but I

Re: Should maintenance repairs be run on system related keyspaces?

Hi Ken, the system_auth keyspace should be repaired. However the system keyspace uses a local replication strategy and there is no point is repairing it. Thanks, Prem On Tue, Aug 11, 2015 at 3:01 PM, K F wrote: > Hi, > > I have a question in general with regards to repairs on system related > k

Should maintenance repairs be run on system related keyspaces?

Hi, I have a question in general with regards to repairs on system related keyspaces. Is it necessary in maintenance repair kicked of via cron should also repair system related keyspaces? Regards,Ken

Re: Hash function

It's not the hash of the ip, there's some entropy in there for uniqueness. On Aug 11, 2015 5:05 AM, "Thouraya TH" wrote: > Hi all, > > Each node in cassandra ring has a unique identifier "nodeID" of 128bytes, > obtained > by a hashing of ? > > ip address ? > > > > Thank you so much for help

Hash function

Hi all, Each node in cassandra ring has a unique identifier "nodeID" of 128bytes, obtained by a hashing of ? ip address ? Thank you so much for help. Kind Regards.