Redis installation
Redis is used to synchronize data between traffic switch instances. It stores information about used resources (e.g gateways capacity limits) to provide correct limitation among all nodes for distributed installations.
Install packages
# apt update && apt install redis-server
Checks
Try to enter redis console from traffic switch host (redis installed at the same host with traffic switch in this example):
# redis-cli
127.0.0.1:6379> ping
PONG
127.0.0.1:6379> quit