Why can't the alert expression value for disk space usage be found in Prometheus?

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Original topic: 磁盘空间使用率的告警表达式值为什么在prometheus中查不到？

| username: 逍遥_猫

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Why can’t the alert expression value for disk space usage be found in Prometheus?

This is present in the alert rules

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| username: 啦啦啦啦啦 | Original post link

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What version is it? The one I see is different from yours.

Try this:
node_filesystem_avail_bytes{fstype=~"(ext.|xfs)",mountpoint!~"/boot"}/ node_filesystem_size_bytes{fstype=~"(ext.|xfs)",mountpoint!~"/boot"} * 100

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| username: 逍遥_猫 | Original post link

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The expert is right, the official documentation is incorrect.

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| username: 逍遥_猫 | Original post link

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How do you pass these combined parameters to another Prometheus?

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| username: 啦啦啦啦啦 | Original post link

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I don’t quite understand what it means to pass it to another Prometheus. Prometheus itself supports a functional expression language that can be used for data selection or aggregation. This alert is from the Alertmanager component, which can perform operations on multiple monitoring items.

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| username: system | Original post link

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