Add ntp resource (#217)

Co-authored-by: David de Torres <[email protected]>

Author: Dlorite

apps/images/ntp.png

@@ -0,0 +1,15 @@
+---
+apiVersion: v1
+kind: App
+name: "NTP"
+keywords: 
+  - Network
+  - Available
+availableVersions: 
+  - '4'
+shortDescription: "The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems"
+description: |
+  The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware.
+icon: https://raw.githubusercontent.com/sysdiglabs/promcat-resources/master/apps/images/ntp.png
+website: http://www.ntp.org/
+available: yes

apps/ntp.yaml

@@ -0,0 +1,3 @@
+# Alerts
+## Drift is too high
+The time drift is more than 10s

resources/ntp/ALERTS.md

@@ -0,0 +1,3 @@
+# Installing the exporter
+To install the [NTP exporter](https://github.com/sapcc/ntp_exporter) here there is an example of a deployment:
+

resources/ntp/INSTALL.md

@@ -0,0 +1,16 @@
+# NTP
+[NTP](http://www.ntp.org/) The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in current use. NTP was designed by David L. Mills of the University of Delaware.
+
+To extract metrics you can use the [NTP Exporter](https://github.com/sapcc/ntp_exporter).
+
+# Metrics
+The metrics available are the ones related to the modules:
+* Drift
+
+# Number of time series generated
+* Each instance generates ~4 metrics
+
+# Attributions
+The configuration files, dashboards, and alerts maintained by [Sysdig team](https://sysdig.com/).
+
+Using [NTP Exporter](https://github.com/sapcc/ntp_exporter) with Apache 2.0 license.

resources/ntp/README.md

@@ -0,0 +1,20 @@
+apiVersion: v1
+kind: Alert
+app: NTP
+version: 1.0.0
+appVersion:
+- '4'
+descriptionFile: ALERTS.md
+configurations:
+- kind: Prometheus
+  data: |-
+    groups:
+    - name: NTP
+      rules:
+      - alert: '[NTP] Drift is too high'
+        expr: "ntp_drift_seconds > 10"
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          description: Drift is too high.

resources/ntp/alerts.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Dashboard
+app: 'NTP'
+version: 1.0.0
+appVersion:
+- '4'
+configurations:
+- name: 'Instance Health'
+  kind: Sysdig
+  image: 'ntp/images/ntp.png'
+  description: |
+    This dashboard offers information on:
+    * Drift per node
+  file: include/ntp.json

resources/ntp/dashboards.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: Description
+app: NTP
+version: 1.0.0
+appVersion:
+- '4'
+descriptionFile: README.md

resources/ntp/description.yaml

@@ -0,0 +1,29 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: ntp-exporter
+  labels:
+    k8s-app: ntp-exporter
+spec:
+  selector:
+    matchLabels:
+      k8s-app: ntp-exporter
+  template:
+    metadata:
+      labels:
+        k8s-app: ntp-exporter
+    spec:
+      hostNetwork: true
+      dnsPolicy: ClusterFirstWithHostNet
+      containers:
+      - name: ntp-exporter
+        image: sapcc/ntp-exporter:v2.0.2
+        args: [
+          "-ntp.server", "chrony-alpine-service"
+        ]
+        resources:
+          limits:
+            memory: 200Mi
+          requests:
+            cpu: 100m
+            memory: 100Mi