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canonical / traefik-route-k8s-operator

https://charmhub.io/traefik-route-k8s
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traefik-route errors out on startup #20

Closed PietroPasotti closed 2 years ago

PietroPasotti commented 2 years ago

Bug Description

The charm errors out when deployed with grafana (e.g. in cos-lite) because traefik-route does not guard against 'external-host' possibly being None

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To Reproduce

juju deploy cos-lite --trust

Environment

juju 3.1-beta1 on local microk8s cluster.

Relevant log output

File "/var/lib/juju/agents/unit-traefik-0/charm/venv/ops/framework.py", line 316, in emit    
    framework._emit(event)                                                                     
  File "/var/lib/juju/agents/unit-traefik-0/charm/venv/ops/framework.py", line 784, in _emit   
    self._reemit(event_path)                                                                   
  File "/var/lib/juju/agents/unit-traefik-0/charm/venv/ops/framework.py", line 857, in _reemit 
    custom_handler(event)                                                                      
  File "/var/lib/juju/agents/unit-traefik-0/charm/lib/charms/traefik_route_k8s/v0/traefik_route
.py", line 166, in _on_relation_changed                                                        
    self._update_requirers_with_external_host()                                                
  File "/var/lib/juju/agents/unit-traefik-0/charm/lib/charms/traefik_route_k8s/v0/traefik_route
.py", line 175, in _update_requirers_with_external_host                                        
    relation.data[self.charm.app]["external_host"] = self._stored.external_host                
  File "/var/lib/juju/agents/unit-traefik-0/charm/venv/ops/model.py", line 945, in __setitem__ 
    raise RelationDataError('relation data values must be strings')                            


### Additional context

_No response_