Description
As observed in CBSE-14091, the replication creation was failing due to lack of connectivity between two AWS Capella clusters. This is due to 'blackhole' entries in the VPC peering tables:
"RouteTableId": "rtb-0a05dd56a23efb56a", "Routes": [ { "DestinationCidrBlock": "10.12.66.0/23", "GatewayId": "local", "Origin": "CreateRouteTable", "State": "active" }, { "DestinationCidrBlock": "10.12.68.0/23", "Origin": "CreateRoute", "State": "blackhole", "VpcPeeringConnectionId": "pcx-0e6255bf69eb02f1d" }, { "DestinationCidrBlock": "0.0.0.0/0", "GatewayId": "igw-0db7ee7362a4929f4", "Origin": "CreateRoute", "State": "active" } ], |
The blackhole state means that the target is not reachable (ref: https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_Route.html)