Redis cluster is enabled to report an error
After all the clusters are configured, the ports of each cluster are modified, and an error occurs when preparing to start the cluster
Don't panic at this time
This BUG occurs because of the system's iptables setting problem, because redis does not open the 6379 port to the outside.
Solution:
(1) Open ports to IP
iptables -N REDIS
iptables -A REDIS -s 192.168.90.20 -j ACCEPT
iptables -A REDIS -s 192.168.90.30 -j ACCEPT
iptables -A REDIS -j LOG --log-prefix "unauth-redis-access"
iptables -A REDIS -j REJECT --reject-with icmp-port-unreachable
iptables -I INPUT -p tcp --dport 6379 -j REDIS
(2) Simplified method
sudo iptables -F
Result: Successfully opened
