CPU使用率(1m)
(1- sum(increase(node_cpu_seconds_total{mode="idle"}[1m])) by(instance) / sum(increase(node_cpu_seconds_total[1m])) by(instance))
Memory使用率
node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes
Mountpoint "/"使用率
node_filesystem_avail_bytes{mountpoint="/"} / node_filesystem_size_bytes{mountpoint="/"}
Network Received
irate(node_network_receive_bytes_total{device="eth0"}[1m])
Network Transmitted
irate(node_network_transmit_bytes_total{device="eth0"}[1m])