After an upgrade to Icinga2 2.14 I got a circular dependency error:
[2024-11-13 09:25:52 +0100] critical/config: Error: Dependency cycle:
Service 'my.host.name!disk_smb'
-> Dependency 'my.host.name!disk_smb!master-connection-check'
-> Service 'my.host.name!master-connection-health'
-> Dependency 'my.host.name!master-connection-health!master-connection-check'
-> Service 'my.host.name!master-connection-health'
[2024-11-13 09:25:52 +0100] critical/cli: Config validation failed. Re-run with 'icinga2 daemon -C' after fixing the config.
I cannot find said dependency. I can see the master-connection-check dependency here:
apply Dependency "master-connection-check" to Service {
parent_service_name = "master-connection-health"
states = [ OK ] // Fail if the parent service state switches to NOT-OK
disable_notifications = true
assign where host.vars.agent_endpoint // Automatically assigns all agent endpoint checks as child services on the matched host
ignore where service.name == "agent-health" // Avoid a self reference from child to parent
}
apply Service "master-connection-health" {
check_command = "cluster-zone"
display_name = "cluster-health-master"
/* This follows the convention that the agent zone name is the FQDN which is the same as the host object name. */
vars.cluster_zone = "master"
command_endpoint = host.name
assign where host.vars.agent_endpoint
}
The service in question is configured like this:
apply Service "disk_smb" {
import "generic-service"
check_command = "disk_smb"
command_endpoint = host.name
assign where host.vars.disk_smb != ""
}
And finally, the generic service template is
template Service "generic-service" {
max_check_attempts = 5
check_interval = 1m
retry_interval = 30s
}
I can’t see the “circular dependency” and therefore have no idea how to resolve this. I only have one dependency configured, which is the master-connection-health.
Configuring every check as a child (assign where host.vars.agent_endpoint) sounds like a reasonable idea, but I think this might be the culprit? 
Any hints on how to fix this are highly appreciated.