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Add etcd metrics, Prometheus scrapes, and Grafana dash

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* Use etcd v3.3 --listen-metrics-urls to expose only metrics
data via http://0.0.0.0:2381 on controllers
* Add Prometheus discovery for etcd peers on controller nodes
* Temporarily drop two noisy Prometheus alerts
This commit is contained in:
Dalton Hubble
2018-03-28 21:45:24 -07:00
parent 642f7ec22f
commit d770393dbc
10 changed files with 58 additions and 22 deletions
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1
google-cloud/container-linux/kubernetes/controllers/cl/controller.yaml.tmpl
View File

@ -13,6 +13,7 @@ systemd:
Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"
Environment="ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379"
Environment="ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380"
Environment="ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381"
Environment="ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}"
Environment="ETCD_STRICT_RECONFIG_CHECK=true"
Environment="ETCD_SSL_DIR=/etc/ssl/etcd"

4
google-cloud/container-linux/kubernetes/network.tf
View File

@ -93,7 +93,7 @@ resource "google_compute_firewall" "internal-flannel" {
target_tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
}
# Allow prometheus (workload) to scrape node-exporter daemonset
# Allow Prometheus to scrape node-exporter daemonset
resource "google_compute_firewall" "internal-node-exporter" {
name = "${var.cluster_name}-internal-node-exporter"
network = "${google_compute_network.network.name}"
@ -103,7 +103,7 @@ resource "google_compute_firewall" "internal-node-exporter" {
ports = [9100]
}
source_tags = ["${var.cluster_name}-worker"]
source_tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
target_tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
}