To see that an IP is reachable from the client node, try using telnet <IP> <PORT> from the client host. In your case the port should be 10800 and the IP is the one you are starting the server from.
The discovery section tells Ignite where to find other nodes needed to form a cluster. If there is a node on 171.159.66.12 that needs to be in the cluster then include it in the discovery section. If the cluster consists of only one server, you can leave the discovery section blank. Read through this section: https://ignite.apache.org/docs/latest/clustering/tcp-ip-discovery -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
