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Add etcd metrics, Prometheus scrapes, and Grafana dash
* 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
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Dalton Hubble
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10
CHANGES.md
10
CHANGES.md
@ -4,6 +4,16 @@ Notable changes between versions.
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## Latest
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* Enable etcd v3.3 metrics endpoint ([#175](https://github.com/poseidon/typhoon/pull/175))
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#### Addons
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* Add Prometheus discovery for etcd peers on controller nodes ([#175](https://github.com/poseidon/typhoon/pull/175))
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* Scrape etcd v3.3 `--listen-metrics-urls` for metrics
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* Enable etcd alerts and populate the etcd Grafana dashboard
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## v1.10.0
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* Kubernetes [v1.10.0](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.10.md#v1100)
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* Remove unused, unmaintained `pxe-worker` internal module
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@ -112,6 +112,22 @@ data:
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target_label: __metrics_path__
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replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor
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# Scrap etcd metrics from controllers
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- job_name: 'etcd'
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kubernetes_sd_configs:
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- role: node
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scheme: http
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relabel_configs:
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- source_labels: [__meta_kubernetes_node_label_node_role_kubernetes_io_controller]
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action: keep
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regex: 'true'
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- action: labelmap
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regex: __meta_kubernetes_node_label_(.+)
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- source_labels: [__meta_kubernetes_node_name]
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action: replace
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target_label: __address__
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replacement: '${1}:2381'
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# Scrape config for service endpoints.
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#
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# The relabeling allows the actual service scrape endpoint to be configured
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@ -15,6 +15,12 @@ spec:
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name: prometheus
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phase: prod
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spec:
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nodeSelector:
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node-role.kubernetes.io/master: ""
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tolerations:
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- key: node-role.kubernetes.io/master
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operator: Exists
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effect: NoSchedule
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serviceAccountName: prometheus
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containers:
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- name: prometheus
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@ -63,26 +63,6 @@ data:
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description: etcd instance {{ $labels.instance }} has seen {{ $value }} leader
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changes within the last hour
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summary: a high number of leader changes within the etcd cluster are happening
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- alert: HighNumberOfFailedGRPCRequests
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expr: sum(rate(grpc_server_handled_total{grpc_code!="OK",job="etcd"}[5m])) BY (grpc_service, grpc_method)
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/ sum(rate(grpc_server_handled_total{job="etcd"}[5m])) BY (grpc_service, grpc_method) > 0.01
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for: 10m
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labels:
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severity: warning
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annotations:
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description: '{{ $value }}% of requests for {{ $labels.grpc_method }} failed
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on etcd instance {{ $labels.instance }}'
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summary: a high number of gRPC requests are failing
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- alert: HighNumberOfFailedGRPCRequests
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expr: sum(rate(grpc_server_handled_total{grpc_code!="OK",job="etcd"}[5m])) BY (grpc_service, grpc_method)
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/ sum(rate(grpc_server_handled_total{job="etcd"}[5m])) BY (grpc_service, grpc_method) > 0.05
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for: 5m
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labels:
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severity: critical
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annotations:
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description: '{{ $value }}% of requests for {{ $labels.grpc_method }} failed
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on etcd instance {{ $labels.instance }}'
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summary: a high number of gRPC requests are failing
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- alert: GRPCRequestsSlow
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expr: histogram_quantile(0.99, sum(rate(grpc_server_handling_seconds_bucket{job="etcd",grpc_type="unary"}[5m])) by (grpc_service, grpc_method, le))
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> 0.15
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@ -13,6 +13,7 @@ systemd:
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Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"
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Environment="ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379"
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Environment="ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380"
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Environment="ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381"
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Environment="ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}"
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Environment="ETCD_STRICT_RECONFIG_CHECK=true"
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Environment="ETCD_SSL_DIR=/etc/ssl/etcd"
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@ -81,6 +81,16 @@ resource "aws_security_group_rule" "controller-node-exporter" {
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source_security_group_id = "${aws_security_group.worker.id}"
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}
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resource "aws_security_group_rule" "controller-node-exporter-self" {
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security_group_id = "${aws_security_group.controller.id}"
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type = "ingress"
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protocol = "tcp"
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from_port = 9100
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to_port = 9100
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self = true
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}
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resource "aws_security_group_rule" "controller-kubelet-self" {
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security_group_id = "${aws_security_group.controller.id}"
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@ -256,6 +266,16 @@ resource "aws_security_group_rule" "worker-flannel-self" {
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resource "aws_security_group_rule" "worker-node-exporter" {
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security_group_id = "${aws_security_group.worker.id}"
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type = "ingress"
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protocol = "tcp"
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from_port = 9100
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to_port = 9100
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source_security_group_id = "${aws_security_group.controller.id}"
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}
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resource "aws_security_group_rule" "worker-node-exporter-self" {
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security_group_id = "${aws_security_group.worker.id}"
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type = "ingress"
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protocol = "tcp"
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from_port = 9100
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@ -13,6 +13,7 @@ systemd:
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Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${domain_name}:2380"
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Environment="ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379"
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Environment="ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380"
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Environment="ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381"
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Environment="ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}"
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Environment="ETCD_STRICT_RECONFIG_CHECK=true"
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Environment="ETCD_SSL_DIR=/etc/ssl/etcd"
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@ -13,6 +13,7 @@ systemd:
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Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"
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Environment="ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379"
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Environment="ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380"
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Environment="ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381"
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Environment="ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}"
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Environment="ETCD_STRICT_RECONFIG_CHECK=true"
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Environment="ETCD_SSL_DIR=/etc/ssl/etcd"
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@ -13,6 +13,7 @@ systemd:
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Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"
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Environment="ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379"
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Environment="ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380"
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Environment="ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381"
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Environment="ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}"
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Environment="ETCD_STRICT_RECONFIG_CHECK=true"
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Environment="ETCD_SSL_DIR=/etc/ssl/etcd"
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@ -93,7 +93,7 @@ resource "google_compute_firewall" "internal-flannel" {
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target_tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
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}
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# Allow prometheus (workload) to scrape node-exporter daemonset
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# Allow Prometheus to scrape node-exporter daemonset
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resource "google_compute_firewall" "internal-node-exporter" {
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name = "${var.cluster_name}-internal-node-exporter"
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network = "${google_compute_network.network.name}"
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@ -103,7 +103,7 @@ resource "google_compute_firewall" "internal-node-exporter" {
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ports = [9100]
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}
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source_tags = ["${var.cluster_name}-worker"]
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source_tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
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target_tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
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}
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