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Fix Prometheus etcd metrics scraping

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* Prometheus was configured to use kubernetes discovery
of etcd targets based on nodes matching the node label
node-role.kubernetes.io/controller=true
* Kubernetes v1.16 stopped permitting node role labels
node-role.kubernetes.io/* so Typhoon renamed these labels
(no longer any association with roles) to
node.kubermetes.io/controller=true
* As a result, Prometheus didn't discover etcd targets,
etcd metrics were missing, etcd alerts were ineffective,
and the etcd Grafana dashboard was empty
* Introduced: https://github.com/poseidon/typhoon/pull/543
This commit is contained in:
Dalton Hubble
2019-10-03 18:56:51 -07:00
parent 995824fa6d
commit 19de38b30d
2 changed files with 3 additions and 1 deletions
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2
addons/prometheus/config.yaml
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@ -115,7 +115,7 @@ data:
- role: node
scheme: http
relabel_configs:
- source_labels: [__meta_kubernetes_node_label_node_role_kubernetes_io_controller]
- source_labels: [__meta_kubernetes_node_label_node_kubernetes_io_controller]
action: keep
regex: 'true'
- action: labelmap