I am studying the nginx+keepalived cluster and checked some online tutorials, but I don’t quite understand how many servers are needed.
Follow the tutorial, nginx+keepalived only needs to be installed on two machines to achieve the effect of "high availability load balancing".
Tutorial address: http://blog.csdn.net/l1028386...
I thought that at least four machines are needed, the first two are master-slave keepalived, the last two are nginx master-slave, and there are several web servers behind nginx.
That is, keepalived does load balancing for nginx, and nginx does load balancing for web servers.
I have two questions
1. How many machines are needed for an nginx+keepalived cluster?
2. If at least two are required, is it also applicable to the formal production environment?
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You can use docker to implement multiple virtual servers and then configure keepalived to try it
At least two, in the same LAN.
keepalived must be deployed on the same machine as the service.