k8s kubeedge安装metrics-server监控节点cpu内存使用情况
官方安装地址: https://kubeedge.io/en/docs/advanced/metrics/
k8s的master节点上安装metrics-server
#在k8s的master节点上执行#创建目录
mkdir metrics-server #下载deploy文件
wget https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.4.0/components.yaml -O deploy.yaml#修改配置如下,可以参考官方的配置
vim deploy.yaml spec:affinity:nodeAffinity:requiredDuringSchedulingIgnoredDuringExecution:nodeSelectorTerms:- matchExpressions:- key: node-role.kubernetes.io/masteroperator: Existstolerations:- key: node-role.kubernetes.io/masteroperator: Existseffect: NoSchedulehostNetwork: truecontainers:- args:- --kubelet-insecure-tls- --cert-dir=/tmp- --secure-port=4443#deploy里的镜像需要翻墙下载
docker pull k8s.gcr.io/metrics-server/metrics-server:v0.4.0#我先本地翻墙,把镜像下载下来然后导过去的
docker save -o metrics-server-image.tar k8s.gcr.io/metrics-server/metrics-server:v0.4.0
docker load -i metrics-server-image.tar #大家可以在docker hub下载我推上去的镜像
docker push beyondyinjl/metrics-server:v0.4.0
#然后修改镜像名
docker tag beyondyinjl/metrics-server:v0.4.0 k8s.gcr.io/metrics-server/metrics-server:v0.4.0#应用
kubectl apply -f deploy.yaml#过一会,等启动成功后,使用命令查看内存CPU情况
kubectl top node
#回显如下:
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
edge-node-1 2100m 52% 1579Mi 42%
k8s-master 1404m 35% 12325Mi 78%
kubeedge节点开启CPU内存的监控
官方文档地址: https://github.com/kubeedge/kubeedge/blob/v1.5.0/docs/setup/keadm.md
在部署metrics-server之前，kubectl logs必须激活功能
#在云节点上操作:#用户更改为root
sudo su#确保您可以找到kubernetes 的ca.crt和ca.key文件
ls /etc/kubernetes/pki/#设置环境CLOUDCOREIPS。环境变量设置为指定cloudcore的IP地址
export CLOUDCOREIPS="192.168.3.100"
echo $CLOUDCOREIPScp $GOPATH/src/github.com/kubeedge/kubeedge/build/tools/certgen.sh /etc/kubeedge/
cd /etc/kubeedge/#从certgen.sh生成证书
/etc/kubeedge/certgen.sh stream#需要在云主机上设置iptables。（此命令应该在每个apiserver部署的节点上执行。)
iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
iptables -t nat -A OUTPUT -p tcp --dport 10350 -j DNAT --to $CLOUDCOREIPS:10003#修改云主机 enable: true
vim /etc/kubeedge/config/cloudcore.yamlcloudStream:enable: truestreamPort: 10003tlsStreamCAFile: /etc/kubeedge/ca/streamCA.crttlsStreamCertFile: /etc/kubeedge/certs/stream.crttlsStreamPrivateKeyFile: /etc/kubeedge/certs/stream.keytlsTunnelCAFile: /etc/kubeedge/ca/rootCA.crttlsTunnelCertFile: /etc/kubeedge/certs/server.crttlsTunnelPrivateKeyFile: /etc/kubeedge/certs/server.keytunnelPort: 10004#重启cloudcore
systemctl status cloudcore.service
systemctl restart cloudcore.service
#在边缘节点上操作#修改 enable: true server: 192.168.x.x:10004
vim /etc/kubeedge/config/edgecore.yaml
edgeStream:enable: truehandshakeTimeout: 30readDeadline: 15server: 192.168.3.100:10004tlsTunnelCAFile: /etc/kubeedge/ca/rootCA.crttlsTunnelCertFile: /etc/kubeedge/certs/server.crttlsTunnelPrivateKeyFile: /etc/kubeedge/certs/server.keywriteDeadline: 15#重启edge core
systemctl status edgecore.service
systemctl restart edgecore.service
shell脚本动态替换
#备份一下
cp /etc/kubeedge/config/edgecore.yaml /etc/kubeedge/config/edgecore.yaml.bak#删除edgeStream的下一行
sed -i '/edgeStream:/{n;d}' /etc/kubeedge/config/edgecore.yaml.bak#在edgeStream的下一行添加一行: enable: true
sed -i -e '/edgeStream:/{s|$|\n enable: true|}' /etc/kubeedge/config/edgecore.yaml.bak#删除edgeStream的下第4行
sed -i '/edgeStream:/{n;n;n;n;d}' /etc/kubeedge/config/edgecore.yaml#在edgeStream的下第3行后添加一行,也就是第4行: server: 192.168.3.100:10004
sed -i -e '/edgeStream:/{n;n;n;s|$|\n server: 192.168.3.100:10004|}' /etc/kubeedge/config/edgecore.yaml#这里的 server: cloudIp:10004 会原样写入到文件
sed -i -e '/edgeStream:/{n;n;n;s|$|\n server: cloudIp:10004|}' /etc/kubeedge/config/edgecore.yaml#替换文件中cloudIp为变量$cloudIp的内容如:192.168.3.100
cloudIp=192.168.3.100
sed -i "s/cloudIp/$cloudIp/g" /etc/kubeedge/config/edgecore.yaml
