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94 lines
3.9 KiB
Markdown
94 lines
3.9 KiB
Markdown
# Prometheus Operator for ARM platform
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The Prometheus Operator for Kubernetes provides easy monitoring definitions for Kubernetes services and deployment and management of Prometheus instances.
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This project aims on porting the [official manifests](https://github.com/coreos/prometheus-operator/tree/master/contrib/kube-prometheus) and images to the ARM platform. This have been tested on a ARM64 Kubernetes cluster deployed as [this article](medium.com/@carlosedp/building-an-arm-kubernetes-cluster-ef31032636f9).
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## Changes to Kubeadm for Prometheus Operator
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According to the official deployment documentation [here](https://github.com/coreos/prometheus-operator/blob/master/contrib/kube-prometheus/docs/kube-prometheus-on-kubeadm.md), a couple of changes on the cluster are required:
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We need to expose the cadvisor that is installed and managed by the kubelet daemon and allow webhook token authentication. To do so, we do the following on **all the masters and nodes**:
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```bash
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# Enable cadvisor port
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sudo sed -e "/cadvisor-port=0/d" -i /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
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# Enable Webhook authorization
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sudo perl -pi -e "s/(?:--authentication-token-webhook=true )*--authorization-mode=Webhook/--authentication-token-webhook=true --authorization-mode=Webhook/g" /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
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sudo systemctl daemon-reload
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sudo systemctl restart kubelet
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```
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In case you already have a Kubernetes deployed with kubeadm, change the address kube-controller-manager and kube-scheduler listens **on master node** in addition to previous kubelet change:
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```bash
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# Make kube-controller ad kube-scheduler listen on all addresses
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sudo sed -e "s/- --address=127.0.0.1/- --address=0.0.0.0/" -i /etc/kubernetes/manifests/kube-controller-manager.yaml
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sudo sed -e "s/- --address=127.0.0.1/- --address=0.0.0.0/" -i /etc/kubernetes/manifests/kube-scheduler.yaml
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```
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## Images
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This project depends on the following images:
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**Alertmanager**
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**Blackbox_exporter**
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**Node_exporter**
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**Snmp_exporter**
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**Prometheus**
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* Source: https://github.com/carlosedp/prometheus-ARM
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* Autobuild: https://travis-ci.org/carlosedp/prometheus-ARM
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* Images:
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* https://hub.docker.com/r/carlosedp/prometheus/
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* https://hub.docker.com/r/carlosedp/alertmanager/
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* https://hub.docker.com/r/carlosedp/blackbox_exporter/
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* https://hub.docker.com/r/carlosedp/node_exporter/
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* https://hub.docker.com/r/carlosedp/snmp_exporter/
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**ARM_exporter**
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* Source: https://github.com/carlosedp/docker-arm_exporter
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* Autobuild: https://travis-ci.org/carlosedp/docker-arm_exporter
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* Images: https://hub.docker.com/r/carlosedp/arm_exporter/
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**Prometheus-operator**
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* Source: https://github.com/carlosedp/prometheus-operator
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* Autobuild:
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* Images: https://hub.docker.com/r/carlosedp/prometheus-operator
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**Grafana**
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* Source: https://github.com/carlosedp/grafana-ARM
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* Autobuild: https://travis-ci.org/carlosedp/grafana-ARM
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* Images: https://hub.docker.com/r/carlosedp/monitoring-grafana/
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**Kube-state-metrics**
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* Source: https://github.com/kubernetes/kube-state-metrics
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* Autobuild:
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* Images: https://hub.docker.com/r/carlosedp/kube-state-metrics
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**Addon-resizer**
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* Source:
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* Autobuild:
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* Images: https://hub.docker.com/r/carlosedp/addon-resizer
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*Obs.* This image is a clone of [ARM64](https://console.cloud.google.com/gcr/images/google-containers/GLOBAL/addon-resizer-arm64) and [ARM](https://console.cloud.google.com/gcr/images/google-containers/GLOBAL/addon-resizer-arm64) with a manifest. It's cloned and generated by the `build_images.sh` script
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**configmap_reload**
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* Source: https://github.com/carlosedp/configmap-reload
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* Autobuild: https://travis-ci.org/carlosedp/configmap-reload
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* Images: https://hub.docker.com/r/carlosedp/configmap-reload
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**SMTP-server**
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Source: https://github.com/carlosedp/docker-smtp
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Autobuild: https://travis-ci.org/carlosedp/docker-smtp
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Images: https://hub.docker.com/r/carlosedp/docker-smtp
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