Openshift平台组件监控

Openshift平台组件监控

Docker

Docker 是Openshift最基本的组件. 需要master与node实例全局的docker健康情况 ，以下是每个节点应该监控的：

Check Name	Description	Storage Driver	Sample Alerting Logic
Docker Daemon	Check that docker is running on a system	devicemapper	systemctl is-active docker
overlay2	systemctl is-active docker
Docker Storage	Check that docker’s storage has adequate space. overlay2 check assumes LV_Name is dockerlv and VG is dockervg.	devicemapper	echo $(echo \"$(docker info 2>/dev/null | awk '/Data Space Available/ {print $4}') / $(docker info 2>/dev/null | awk '/Data Space Total/ {print $4}')\" | bc -l) '>' 0.3 | bc -l
overlay2	echo "$(df -h | awk '/dockervg-dockerlv/ {print $5}' | awk -F% '{print $1}') > 70" | bc
Docker Metadata Storage	Check that docker’s metadata storage volume is not full	devicemapper	echo $(echo \"$(docker info 2>/dev/null | awk '/Metadata Space Available/ {print $4}') / $(docker info 2>/dev/null | awk '/Metadata Space Total/ {print $4}')\" | bc -l) '>' 0.3 | bc -l
overlay2	N/A with overlay2

Nodes & Masters

Check Name	Description	Relevant Hosts	OCP Version	Sample Alerting Logic
Etcd Service	Check that etcd is active	Masters	<= 3.9	systemctl is-active etcd
>= 3.10	oc get pods -n kube-system --no-headers -o=custom-columns=POD:.metadata.name,STATUS:.status.phase | grep -i "master-etcd" | grep -i "running" | if [ $( wc -l) -eq $(oc get pods -n kube-system --no-headers -o=custom-columns=POD:.metadata.name | grep etcd | wc -l) ]; then exit 0; else exit 1; fi
Etcd Storage	Check that the etcd volume is not too full.This checks assumes the node storage (/var/lib/etcd) is provisioned with a separate logical volume.	Masters	<= 3.9	echo "$(lvs | awk '/etcd/ {print $4}') > 70" | bcor echo "$(df -h | awk '/etcd/ {print $5}' | awk -F% '{print $1}') > 70" | bc
>= 3.10	echo "$(lvs | awk '/etcd/ {print $4}') > 70" | bcor echo "$(df -h | awk '/etcd/ {print $5}' | awk -F% '{print $1}') > 70" | bc
Master API Service (single master)	Check that the Master API Service or pods are active	Masters	<= 3.9	systemctl is-active atomic-openshift-master
>= 3.10	Same as multi-master check.
Master API Service (multi-master)	Check that the Master API Service or pods are active	Masters	<= 3.9	systemctl is-active atomic-openshift-master-api
>= 3.10	oc get pods -n kube-system --no-headers -o=custom-columns=POD:.metadata.name,STATUS:.status.phase | grep -i "master-api" | grep -i "running" | if [ $( wc -l) -eq $(oc get pods -n kube-system --no-headers -o=custom-columns=POD:.metadata.name | grep etcd | wc -l) ]; then exit 0; else exit 1; fi
Master Controllers Service (multi-master)	Check that the Master Controllers Service or pods are active	Masters	<= 3.9	systemctl is-active atomic-openshift-master-controllers
>= 3.10	oc get pods -n kube-system --no-headers -o=custom-columns=POD:.metadata.name,STATUS:.status.phase | grep -i "master-controller" | grep -i "running" | if [ $( wc -l) -eq $(oc get pods -n kube-system --no-headers -o=custom-columns=POD:.metadata.name | grep etcd | wc -l) ]; then exit 0; else exit 1; fi
Node Service	Check that the node service is active	All Nodes	<= 3.9	systemctl is-active atomic-openshift-node
>= 3.10	systemctl is-active atomic-openshift-node
Node Storage	Check that the node’s local data storage volume is not too full. This checks assumes the node storage (/var/lib/origin) is provisioned with a separate logical volume.	All Nodes	<= 3.9	echo "$(lvs | awk '/origin/ {print $4}') > 70" | bcor echo "$(df -h | awk '/origin/ {print $5}' | awk -F% '{print $1}') > 70" | bc
>= 3.10	echo "$(lvs | awk '/origin/ {print $4}') > 70" | bcor echo "$(df -h | awk '/origin/ {print $5}' | awk -F% '{print $1}') > 70" | bc
OpenVSwitch Service	Check that the openvswitch service or pods are active	All Nodes	<= 3.9	systemctl is-active openvswitch
>= 3.10	oc get pods -n openshift-sdn --no-headers -o=custom-columns=POD:.metadata.name,STATUS:.status.phase | grep -i "ovs-" | grep -i "running" | if [ $( wc -l) -eq $(oc get nodes --no-headers | wc -l) ]; then exit 0; else exit 1; fi
SDN Service	Check that all the SDN pods are active	All Nodes	<= 3.9	NA
>= 3.10	oc get pods -n openshift-sdn --no-headers -o=custom-columns=POD:.metadata.name,STATUS:.status.phase | grep -i "sdn-" | grep -i "running" | if [ $( wc -l) -eq $(oc get nodes --no-headers | wc -l) ]; then exit 0; else exit 1; fi

API Endpoints

许多Openshift组件暴露HTTP端点，用于健康与相关操作。这些需要监控：

Check Name	Description	Sample Alerting Logic
OpenShift Master API Server	Check the health of a master API Endpoint	curl -s https://console.c1-ocp.myorg.com:8443/healthz | grep ok
Router	Check the health of the Router	curl http://router.default.svc.cluster.local:1936/healthz | grep 200
Registry	Check the health of the Registry	curl -I https://docker-registry.default.svc.cluster.local:5000/healthz | grep 200
Logging	Check the health of the EFK Logging Stack	Because of the various components and complexities involved, we recommend the OpenShift Logging health check script.
Metrics	Check the health of the Metrics Stack	Because of the various components and complexities involved, we recommend the OpenShift Metrics health check script.

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作者：Petter Liu
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