Monitoring server is a microservice which monitors all the applications within the environment. It's a passive system used for observation and actions are taken separately based on monitoring events.
The monitoring service subscribes to various events, aggregates and summarises.
Who monitors the monitoring service? The monitoring service
-
Install Consul
Consul is the default registry/discovery for go-micro apps. It's however pluggable. https://www.consul.io/intro/getting-started/install.html
-
Run Consul
$ consul agent -server -bootstrap-expect 1 -data-dir /tmp/consul -
Download and start the service
go get github.com/micro/monitoring-srv monitoring-srv
OR as a docker container
docker run microhq/monitoring-srv --registry_address=YOUR_REGISTRY_ADDRESS
Monitoring server implements the following RPC Methods
micro query go.micro.srv.monitoring Monitor.HealthChecks '{"id": "go.micro.healthcheck.ping"}'
{
"healthChecks": [
{
"description": "This is a ping healthcheck that succeeds",
"id": "go.micro.healthcheck.ping",
"results": {
"foo": "bar",
"label": "cruft",
"metric": "1",
"msg": "a successful check",
"stats": "123.0"
},
"service": {
"id": "go-server-672d50a7-ab77-11e5-ad84-68a86d0d36b6",
"name": "go-server",
"version": "1.0.0"
},
"status": 1,
"timestamp": 1.451096504e+09
}
]
}
micro query go.micro.srv.monitoring Monitor.HealthChecks '{"id": "go.micro.healthcheck.pong"}'
{
"healthChecks": [
{
"description": "This is a pong healthcheck that fails",
"error": "Unknown exception",
"id": "go.micro.healthcheck.pong",
"results": {
"foo": "ugh",
"label": "",
"metric": "-0.0001",
"msg": "a catastrophic failure occurred",
"stats": "NaN"
},
"service": {
"id": "go-server-672d50a7-ab77-11e5-ad84-68a86d0d36b6",
"name": "go-server",
"version": "1.0.0"
},
"status": 2,
"timestamp": 1.451096508e+09
}
]
}Healthchecks are sent using go-platform/monitor. Example usage can be found in go-platform/examples/monitor.