The uninstrumented gateways are not instrumented by the SkyWalking agent plugin when they start, but they can be configured in
gateways.yml file or via Dynamic Configuration. The reason why they can't register to backend automatically is that there are no suitable agent plugins. For example, there are no agent plugins for Nginx, HAProxy, etc. So to visualize the real topology, we provide a way to configure the gateways/proxies manually.
The configuration content includes gateway names and their instances:
gateways: - name: proxy0 # the name is not used for now instances: - host: 127.0.0.1 # the host/IP of this gateway instance port: 9099 # the port of this gateway instance defaults to 80
host of the instance must be the one that is actually used on the client-side. For example, if instance
proxyA has 2 IPs, say
192.168.1.111, both of which delegate the target service, and the client connects to
192.168.1.110, then configuring
192.168.1.111 as the
host won't work properly.