We are trying to setup following cluster geography for Cassandra:
2 VPCs in 2 different AWS regions (US-West, APAC-Singapoore)
VPCs connected via VPC peering (common IP space)
2 Cassandra nodes in each DC, 1 DC in each region (4 nodes total)
Nodes communicating together with private IP in VPC
Connection to nodes should be available only inside VPC, no Public IPs!
Using Gossiping Snitch
Looks like nodes in one region are able to see second region DC, but not the other way around. Spend some time and cannot find the issue.
What configuration setup would you recommend? Maybe good advice how to troubleshoot possible network misconfigurations
Node 1 (us-west-2a - 10.200.0.100)
cassandra.yaml
broadcast_address: 10.200.0.100
listen_address: 10.200.0.100
rpc_address: 0.0.0.0
broadcast_rpc_address: 10.200.0.100
Nodetool output on DC1 node 1 (us-west-2a)
Datacenter: ap-southeast
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host ID Rack
DN 10.201.1.77 97.02 KB 256 ? ac72b936-8c5c-41db-ad06-fa056759e704 1a
DN 10.201.1.93 141.97 KB 256 ? 78c4b0c5-adff-40b8-913d-8be063454643 1a
Datacenter: us-west-2a
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host ID Rack
UN 10.200.0.52 671.59 KB 256 ? b84f2113-90ef-43d4-91df-eed3fbb6ff79 2a
UN 10.200.0.100 516.96 KB 256 ? 3ce8d7ea-d586-48f8-9f8a-b9a5c1fb8fa0 2a
Node 3 (ap-southeast - 10.201.1.93)
cassandra.yaml
broadcast_address: 10.201.1.93
listen_address: 10.201.1.93
rpc_address: 0.0.0.0
broadcast_rpc_address: 10.201.1.93
Nodetool output for DC2 node 3 (ap-southeast)
Datacenter: ap-southeast
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host ID Rack
UN 10.201.1.93 136.2 KB 256 ? 78c4b0c5-adff-40b8-913d-8be063454643 1a
Did you try using a VPN to connect the two? I don't think VPC Peering works across multiple regions. It's only for connecting VPCs within the same region.
https://notes.ayushsharma.in/2017/02/connecting-vpcs-in-2-aws-regions-site-to-site-vpn
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