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Prometheus/promdash replication controller
This commit is contained in:
jayunit100
parent
f85e6bcf74
commit
39011ae2d1
@ -23,7 +23,7 @@ Now quickly confirm that /mnt/promdash/file.sqlite3 exists, and has a non-zero s
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```
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```
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Looks open enough :).
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Looks open enough :).
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1. Now, you can start this pod, like so `kubectl create -f cluster/add-ons/prometheus/prometheusB3.yaml`. This pod will start both prometheus, the server, as well as promdash, the visualization tool. You can then configure promdash, and next time you restart the pod - you're configuration will be remain (since the promdash directory was mounted as a local docker volume).
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1. Now, you can start this pod, like so `kubectl create -f contrib/prometheus/prometheus-all.json`. This ReplicationController will maintain both prometheus, the server, as well as promdash, the visualization tool. You can then configure promdash, and next time you restart the pod - you're configuration will be remain (since the promdash directory was mounted as a local docker volume).
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1. Finally, you can simply access localhost:3000, which will have promdash running. Then, add the prometheus server (locahost:9090)to as a promdash server, and create a dashboard according to the promdash directions.
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1. Finally, you can simply access localhost:3000, which will have promdash running. Then, add the prometheus server (locahost:9090)to as a promdash server, and create a dashboard according to the promdash directions.
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@ -31,13 +31,13 @@ Looks open enough :).
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You can launch prometheus easily, by simply running.
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You can launch prometheus easily, by simply running.
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`kubectl create -f cluster/addons/prometheus/prometheus.yaml`
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`kubectl create -f cluster/addons/prometheus/prometheus-all.json`
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This will bind to port 9090 locally. You can see the prometheus database at that URL.
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This will bind to port 9090 locally. You can see the prometheus database at that URL.
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# How it works
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# How it works
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This is a v1beta1 based, containerized prometheus pod, which scrapes endpoints which are readable on the KUBERNETES_RO service (the internal kubernetes service running in the default namespace, which is visible to all pods).
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This is a v1beta3 based, containerized prometheus ReplicationController, which scrapes endpoints which are readable on the KUBERNETES_RO service (the internal kubernetes service running in the default namespace, which is visible to all pods).
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1. The KUBERNETES_RO service is already running : providing read access to the API metrics.
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1. The KUBERNETES_RO service is already running : providing read access to the API metrics.
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@ -68,7 +68,5 @@ at port 9090.
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- We should publish this image into the kube/ namespace.
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- We should publish this image into the kube/ namespace.
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- Possibly use postgre or mysql as a promdash database.
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- Possibly use postgre or mysql as a promdash database.
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- push gateway (https://github.com/prometheus/pushgateway) setup.
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- push gateway (https://github.com/prometheus/pushgateway) setup.
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- Setup high availability via NFS
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[]()
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[]()
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76
contrib/prometheus/prometheus-all.json
Normal file
76
contrib/prometheus/prometheus-all.json
Normal file
@ -0,0 +1,76 @@
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{
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"apiVersion": "v1beta3",
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"kind": "ReplicationController",
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"metadata": {
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"labels": {
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"name": "kube-prometheus"
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},
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"name": "kube-prometheus"
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},
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"spec": {
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"replicas": 1,
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"selector": {
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"name": "kube-prometheus"
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},
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"template": {
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"metadata": {
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"labels": {
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"name": "kube-prometheus"
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}
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},
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"spec": {
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"containers": [
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{
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"name":"kube-promdash",
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"image": "prom/promdash",
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"env": [
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{
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"name": "DATABASE_URL",
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"value": "sqlite3:/promdash/file.sqlite3"
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}
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],
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"ports": [
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{
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"containerPort": 3000,
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"hostPort": 3000,
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"protocol": "TCP"
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}
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],
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"volumeMounts": [
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{
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"mountPath": "/promdash",
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"name": "data"
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}
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]
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},
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{
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"command": ["./run_prometheus.sh", "-t", "KUBERNETES_RO", "-d", "/var/prometheus/"],
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"image": "jayunit100/kube-prometheus",
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"name": "kube-prometheus",
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"ports": [
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{
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"containerPort": 9090,
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"hostPort": 9090,
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"protocol": "TCP"
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}
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],
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"volumeMounts": [
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{
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"mountPath": "/var/prometheus/",
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"name": "data"
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}
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]
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}
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],
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"volumes": [
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{
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"hostPath": {
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"path": "/mnt/promdash"
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},
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"name": "data"
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}
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]
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}
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}
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}
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}
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@ -1,83 +0,0 @@
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apiVersion: v1beta3
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kind: Pod
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metadata:
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creationTimestamp: null
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labels:
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name: kube-prometheus
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name: kube-prometheus
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spec:
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containers:
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- capabilities: {}
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env:
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- name: DATABASE_URL
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value: sqlite3:/promdash/file.sqlite3 #see volume comment below.
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image: prom/promdash
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imagePullPolicy: IfNotPresent
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name: kube-promdash
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ports:
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- containerPort: 3000
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hostPort: 3000
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protocol: TCP
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resources: {}
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securityContext:
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capabilities: {}
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privileged: false
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terminationMessagePath: /dev/termination-log
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volumeMounts:
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- mountPath: /promdash
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name: promdashdb
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- args:
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- -t
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- KUBERNETES_RO
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- -d
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- /var/prometheus/
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capabilities: {}
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image: jayunit100/kube-prometheus
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imagePullPolicy: IfNotPresent
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name: kube-prometheus
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ports:
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- containerPort: 9090
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hostPort: 9090
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protocol: TCP
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resources: {}
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securityContext:
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capabilities: {}
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privileged: false
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terminationMessagePath: /dev/termination-log
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volumeMounts:
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- mountPath: /var/prometheus/
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name: data
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dnsPolicy: ClusterFirst
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restartPolicy: Always
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volumes:
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# There are many ways to create these volumes.
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# for example, gcePersistentDisk:, glusterfs:, and so on...
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# for the shared data volume (which we may not need going forward)
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# we just use the undefined shared volume type.
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- awsElasticBlockStore: null
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emptyDir:
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medium: ""
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gcePersistentDisk: null
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gitRepo: null
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glusterfs: null
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hostPath: null
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iscsi: null
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name: data
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nfs: null
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secret: null
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# Again, many ways to create the promdash mount. We are just using local
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# disk for now. Later maybe just replace with pure RDBMS rather than file
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# based sqlite db. The reason we have a volume is so that its persistent between
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# pod restarts.
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- awsElasticBlockStore: null
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emptyDir: null
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gcePersistentDisk: null
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gitRepo: null
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glusterfs: null
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hostPath:
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path: /mnt/promdash
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iscsi: null
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name: promdashdb
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nfs: null
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secret: null
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status: {}
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