kubernetes 每个node上只能运行一个副本DaemonSet
每个node上只能运行一个副本:
apiVersion: extensions/v1beta1 kind: DaemonSet #使用DaemonSet的方式运行 metadata: name: kube-flannel namespace: kube-system labels: tier: node app: flannel spec: template: metadata: labels: tier: node app: flannel spec: hostNetwork: true #指定pod直接使用的node网络,相当于docker run --network=host nodeSelector: beta.kubernetes.io/arch: amd64 containers: #以下定义了两个运行的容器 - name: kube-flannel image: quay.io/coreos/flannel:v0.8.0-amd64 command: [ "/opt/bin/flanneld", "--ip-masq", "--kube-subnet-mgr" ] - name: install-cni image: quay.io/coreos/flannel:v0.8.0-amd64 command: [ "/bin/sh", "-c", "set -e -x;cp -f /etc/kube-flannel/cni-conf.json" ]
docker命令转换成yaml文件:
#docker运行命令 docker run -d \ -v "/proc:/host/proc" \ -v "/sys:/host/sys" \ -v "/:/rootfs" \ --net=host \ prom/node-exporter \ --path.procfs /host/proc \ --path.sysfs /host/sys \ --collector.filesystem.ignored-mount-points "^/(sys|proc|dev|host|etc)($|/)" #转换成DaemonSet的YAML配置文件 apiVersion: extensions/v1beta1 kind: DaemonSet metadata: name: node-exporter spec: template: metadata: labels: app: prometheus spec: hostNetwork: true #直接使用host网络 containers: - name: node-exporter image: prom/node-exporter imagePullPolicy: IfNotPresent command: #设置容器启动命令 - /bin/node_exporter - --path.procfs - /host/proc - --path.sysfs - /host/sys - ^(sys|proc|dev|host|etc)($|/) volumeMounts: #通过vloume将host路径/proc、/sys、/映射到容器中 - name: proc mountPath: /host/proc - name: sys mountPath: /host/sys - name: root mountPath: /rootfs volumes: - name: proc hostPath: path: /proc - name: sys hostPath: path: /sys - name: root hostPath: path: /