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检查电源模块状态

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检查电源模块状态

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分类 storage 

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标签 ceph 

我们知道IPMI很强大，如何利用ipmitool获取到电源的实施状态的。现代的服务器，基本上都有两个电源模块，作为冗余。如何查看电源的状态信息呢，是否所有的电源模块都已启用，电源是否都通电？

通过如下指令可以获取到电源的状态信息：

ipmitool sdr type "power supply"

正常情况下电源的状态如下所示：

PS1 Status       | C4h | ok  | 10.1 | Presence detected
PS2 Status       | C5h | ok  | 10.2 | Presence detected

如果，我们将其中一个拔掉电源插头，状态就会如下所示：

PS1 Status       | C4h | ok  | 10.1 | Presence detected
PS2 Status       | C5h | ok  | 10.2 | Presence detected, Failure detected, Power Supply AC lost

如果我们将其中一个的电源模块(PSU, power supply unit)直接从服务器上拔出，状态就会如下所示：

PS1 Status       | C4h | ok  | 10.1 | Presence detected
PS2 Status       | C5h | ok  | 10.2 |

事实上除了上面的几种，我们可以通过

ipmitool sensor get "PS1 Status"

查看其他可能的值：

Sensor ID              : PS1 Status (0xc4)
 Entity ID             : 10.1 (Power Supply)
 Sensor Type (Discrete): Power Supply (0x08)
 Sensor Reading        : 1h                    <-------------这个值是方法2提到0x01 ，即正常状态
 Event Message Control : Per-threshold
 States Asserted       : Power Supply
                         [Presence detected]
 Assertion Events      : Power Supply
                         [Presence detected]
 Deassertion Events    : Power Supply
                         [Failure detected]
 Assertions Enabled    : Power Supply
                         [Failure detected]
                         [Power Supply AC lost]
                         [AC lost or out-of-range]
                         [AC out-of-range, but present]
                         [Config Error]
 Deassertions Enabled  : Power Supply
                         [Failure detected]
                         [Power Supply AC lost]
                         [AC lost or out-of-range]
                         [AC out-of-range, but present]
                         [Config Error]
 OEM                   : 0

从如下指令也可以获得电源模块的信息：

ipmitool sensor list

输出如下：

PS1 Status       | 0x1        | discrete   | 0x0100| na        | na        | na        | na        | na        | na        
PS2 Status       | 0x1        | discrete   | 0x0100| na        | na        | na        | na        | na        | na

第二列的值很有意思：

  • 0x01 status ok，最常见的状态
  • 0x00 power supply unit not present ，即电源模块不存在，一般电源模块从服务器中拔出，状态是0x00
  • 0x03 power supply off or failed，我没有遇到过这种状态，我猜是电源模块坏了的时候，会是这种状态
  • 0x0b input out of range（ex. No AC input）这也是很常见的状态，把电源的插头拔掉，就会是这种状态。

这种方法比较好，个人比较推荐这种方法。

  • https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-sg8039en_us&docLocale=en_US

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