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- To know the firewall block, kernel panic messages can be read using "dmesg" command. Try telnet between master/slaves for the pod ip and port 8080. In order to connect pod ip in port 8080 from kubernetes master, ensure that the slave machines firewall has port 8080 ALLOW. "ufw status" will tell the status of firewall. If the firewall is active then rules will be listed.
- Check weave net pods logs and ensure weave cni network is working properly. As it is occurring initial setup time itself, try to remove the file /var/lib/weave/weave-netdata.db and restart weave (weave reset or terminate the weave pods and it will be spawned back). Reference: https://www.weave.works/docs/net/latest/tasks/ipam/troubleshooting-ipam/ Section: "Seeded by Different Peers"