I'm trying to connect three raspberry pi 3 B+ together via ethernet. All three are connected via wlan0 to my wifi network for internet. All are connected via ethernet cables to the same desktop switch, and the physical connections all work (blinking green lights for all)
I have given each a unique static eth0 ip address by editing etc/dhcpcd.conf
when i enter 'ping [static_eth0_address]' in terminal nothing is received... when i enter ifconfig i see that eth0: has no inet address... (however wlan0 DOES, and when i ping a pi's wlan0 address it receives a response)
I can use rdesktop to remotely access other pi's...but that is wlan0 related
My intention: I am trying to set up ONE pi as a mysql server, will run database, and other pi's are clients, and will access database via ethernet. I need each pi to keep its internet connection (via wlan0), but ALSO be reachable via eth0 for mysql purposes.
All pi's have freshly installed latest downloaded raspbian full OS. Only changes I have made so far are to dhcpcd file.
tl:dr How can I get eth0 ip addresses working so that the pi's can communicate over ethernet to each other while preserving each pi's wlan0 connection to my wifi for internet access?
Many thanks for all help! :)