前置条件
1.规划两台主机安装prometheus
# kubectl get nodes --show-labels | grep prometheus
nm-foot-gxc-proms01 Ready worker 62d v1.23.6 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=proms01,kubernetes.io/os=linux,node-role.kubernetes.io/worker=,node=prometheus
nm-foot-gxc-proms02 Ready worker 62d v1.23.6 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=proms02,kubernetes.io/os=linux,node-role.kubernetes.io/worker=,node=prometheus
2.在规划的主机目录上,新建监控数据存放目录
# mkidr -p /data/prometheus-data
具体操作
1.修改prometheus-prometheus.yaml,添加retention参数

# cat prometheus-prom