homeassistant:

sensor:
  - platform: snmp
    name: "ESXi Server Description"
    host: !secret esxi_server
    baseoid: 1.3.6.1.2.1.1.1.0
    accept_errors: true

  - platform: snmp
    name: "ESXi Total RAM"
    host: !secret esxi_server
    baseoid: 1.3.6.1.2.1.25.2.3.1.5.6
    accept_errors: true

  - platform: snmp
    name: "ESXi Used RAM"
    host: !secret esxi_server
    baseoid: 1.3.6.1.2.1.25.2.3.1.6.6
    accept_errors: true

  - platform: snmp
    name: "ESXi System Uptime Epoch"
    host: !secret esxi_server
    baseoid: 1.3.6.1.2.1.25.1.1.0
    accept_errors: true

  - platform: snmp
    name: "ESXi Number of Network Interfaces"
    host: !secret esxi_server
    baseoid: 1.3.6.1.2.1.2.1.0
    accept_errors: true

  - platform: snmp
    name: "ESXi System Memory Size"
    host: !secret esxi_server
    baseoid: 1.3.6.1.2.1.25.2.2.0
    accept_errors: true

  - platform: template
    sensors:
      esxi_memory_used:
        friendly_name: "ESXi Memory Usage"
        unit_of_measurement: "%"
        value_template: "{{(states('sensor.esxi_used_ram') | float / states('sensor.esxi_total_ram') | float * 100) | round }}"

  - platform: template
    sensors:
      esxi_system_uptime:
        friendly_name: "ESXi System Uptime"
        value_template: >
          {% set time = states('sensor.esxi_system_uptime_epoch') | int %}
          {% set minutes = ((time % 360000) / 6000) | int %}
          {% set hours = ((time % 8640000) / 360000) | int %}
          {% set days = (time / 8640000) | int %}
          {{ days }} days, {{ hours }} hours {{ minutes }} minutes.