* scrape kubelet metrics via api node proxy
* add manifests to setup serviceaccount, clusterrole and clusterrolebinding to work with rbac
* removed .cluster.local and added newline to address comments
If metrics_relabel_configs are used to drop metrics, an errSeriesDropped
is returned. This shouldn't be used to return an error at the end of a
append() call.
When we have only one chunk that is out of range, then we are returning
it unpopulated (w/o calling `Chunk(ref)`). This would cause a panic
downstream.
Fixes: prometheus/prometheus#2629
Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>
* Use request.Context() instead of a global map of contexts.
* Add some basic opentracing instrumentation on the query path.
* Remove tracehandler endpoint.
Rational:
* When the config is reloaded and the provider context is canceled, we need to
exit the current ZK `TargetProvider.Run` method as a new provider will be
instantiated.
* In case `Stop` is called on the `ZookeeperTreeCache`, the update/events
channel may not be closed as it is shared by multiple caches and would
thus be double closed.
* Stopping all `zookeeperTreeCacheNode`s on teardown ensures all associated
watcher go-routines will be closed eagerly rather than implicityly on
connection close events.
The Kubernetes pod SD creates a target for each declared port, as documented:
https://prometheus.io/docs/operating/configuration/#pod
> The pod role discovers all pods and exposes their containers as targets. For
> each declared port of a container, a single target is generated. If a
> container has no specified ports, a port-free target per container is created
> for manually adding a port via relabeling.
This results in the default port being the declared port, or no port if none are
declared.
Mutating the chunks can change their length. Hence referencing using
previous indices can cause panics.
Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>
This removes the flag from the label value index and serializes it using
encbufs.
TODO: move CRC32 checksum into label value index hash table for
referntial integrity.
