Allow specifying the resource limits of the loki-logs pods that are created by the agent operator

[sourcehawk]

Is your feature request related to a problem? Please describe. It is not possible to specify resource requests & limits on "loki-logs" pods spawned by the grafana agent operator.

Describe the solution you'd like I would like to able to specify resource requests and limits on all pods that the chart generates.

Describe alternatives you've considered NONE

Additional context The daemonset in question:

me@work: $ kubectl describe daemonset monitoring-loki-logs -n monitoring
Name:           monitoring-loki-logs
Selector:       app.kubernetes.io/instance=monitoring-loki,app.kubernetes.io/managed-by=grafana-agent-operator,app.kubernetes.io/name=grafana-agent,grafana-agent=monitoring-loki,operator.agent.grafana.com/name=monitoring-loki,operator.agent.grafana.com/type=logs
Node-Selector:  <none>
Labels:         app.kubernetes.io/instance=monitoring-loki
                app.kubernetes.io/managed-by=grafana-agent-operator
                app.kubernetes.io/name=grafana-agent
                grafana-agent=monitoring-loki
                operator.agent.grafana.com/name=monitoring-loki
                operator.agent.grafana.com/type=logs
Annotations:    deprecated.daemonset.template.generation: 1
                meta.helm.sh/release-name: monitoring
                meta.helm.sh/release-namespace: monitoring
Desired Number of Nodes Scheduled: 3
Current Number of Nodes Scheduled: 3
Number of Nodes Scheduled with Up-to-date Pods: 3
Number of Nodes Scheduled with Available Pods: 3
Number of Nodes Misscheduled: 0
Pods Status:  3 Running / 0 Waiting / 0 Succeeded / 0 Failed
Pod Template:
  Labels:           app.kubernetes.io/instance=monitoring-loki
                    app.kubernetes.io/managed-by=grafana-agent-operator
                    app.kubernetes.io/name=grafana-agent
                    app.kubernetes.io/version=v0-34-1
                    grafana-agent=monitoring-loki
                    operator.agent.grafana.com/name=monitoring-loki
                    operator.agent.grafana.com/type=logs
  Annotations:      kubectl.kubernetes.io/default-container: grafana-agent
  Service Account:  monitoring-loki-grafana-agent
  Containers:
   config-reloader:
    Image:      quay.io/prometheus-operator/prometheus-config-reloader:v0.62.0
    Port:       <none>
    Host Port:  <none>
    Args:
      --config-file=/var/lib/grafana-agent/config-in/agent.yml
      --config-envsubst-file=/var/lib/grafana-agent/config/agent.yml
      --watch-interval=1m
      --statefulset-ordinal-from-envvar=POD_NAME
      --reload-url=http://127.0.0.1:8080/-/reload
    Environment:
      POD_NAME:   (v1:metadata.name)
      HOSTNAME:   (v1:spec.nodeName)
      SHARD:     0
    Mounts:
      /var/lib/docker/containers from dockerlogs (ro)
      /var/lib/grafana-agent/config from config-out (rw)
      /var/lib/grafana-agent/config-in from config (ro)
      /var/lib/grafana-agent/data from data (rw)
      /var/lib/grafana-agent/secrets from secrets (ro)
      /var/log from varlog (ro)
   grafana-agent:
    Image:      grafana/agent:v0.34.1
    Port:       8080/TCP
    Host Port:  0/TCP
    Args:
      -config.file=/var/lib/grafana-agent/config/agent.yml
      -config.expand-env=true
      -server.http.address=0.0.0.0:8080
      -enable-features=integrations-next
    Readiness:  http-get http://:http-metrics/-/ready delay=0s timeout=3s period=5s #success=1 #failure=120
    Environment:
      POD_NAME:   (v1:metadata.name)
      HOSTNAME:   (v1:spec.nodeName)
      SHARD:     0
    Mounts:
      /var/lib/docker/containers from dockerlogs (ro)
      /var/lib/grafana-agent/config from config-out (rw)
      /var/lib/grafana-agent/config-in from config (ro)
      /var/lib/grafana-agent/data from data (rw)
      /var/lib/grafana-agent/secrets from secrets (ro)
      /var/log from varlog (ro)
  Volumes:
   config:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  monitoring-loki-logs-config
    Optional:    false
   config-out:
    Type:       EmptyDir (a temporary directory that shares a pod's lifetime)
    Medium:     
    SizeLimit:  <unset>
   secrets:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  monitoring-loki-secrets
    Optional:    false
   varlog:
    Type:          HostPath (bare host directory volume)
    Path:          /var/log
    HostPathType:  
   dockerlogs:
    Type:          HostPath (bare host directory volume)
    Path:          /var/lib/docker/containers
    HostPathType:  
   data:
    Type:          HostPath (bare host directory volume)
    Path:          /var/lib/grafana-agent/data
    HostPathType:  
Events:            <none>

[elcomtik]

I think this is already possible. I'm setting the following values

monitoring:
  selfMonitoring:
    enabled: true
    grafanaAgent:
      installOperator: true
      resources:
        requests:
          cpu: 50m
          memory: 100Mi
        limits:
          memory: 200Mi