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Enable kube-proxy metrics and allow Prometheus scrapes

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* Configure kube-proxy --metrics-bind-address=0.0.0.0 (default
127.0.0.1) to serve metrics on 0.0.0.0:10249
* Add firewall rules to allow Prometheus (resides on a worker) to
scrape kube-proxy service endpoints on controllers or workers
* Add a clusterIP: None service for kube-proxy endpoint discovery
This commit is contained in:
Dalton Hubble
2019-12-29 12:21:49 -08:00
parent b2eb3e05d0
commit 43e05b9131
16 changed files with 153 additions and 33 deletions
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2
digital-ocean/container-linux/kubernetes/bootstrap.tf
View File

@ -1,6 +1,6 @@
# Kubernetes assets (kubeconfig, manifests)
module "bootstrap" {
source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=c8c21deb7682c2a83a1b86ff6ed88f3e5a20262d"
source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=ac4b7af57012d477cd53bd74ce632ac581e807e1"
cluster_name = var.cluster_name
api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]

8
digital-ocean/container-linux/kubernetes/network.tf
View File

@ -16,12 +16,20 @@ resource "digitalocean_firewall" "rules" {
source_tags = [digitalocean_tag.controllers.name, digitalocean_tag.workers.name]
}
# Allow Prometheus to scrape node-exporter
inbound_rule {
protocol = "tcp"
port_range = "9100"
source_tags = [digitalocean_tag.workers.name]
}
# Allow Prometheus to scrape kube-proxy
inbound_rule {
protocol = "tcp"
port_range = "10249"
source_tags = [digitalocean_tag.workers.name]
}
inbound_rule {
protocol = "tcp"
port_range = "10250"