Current Equation of "Size of ETCD" is Incorrect

[grantthomp]

Describe the problem

The documentation states the equation to use for calculating maximum size of ETCD is:

max(etcd_db_total_size_in_bytes{job="kube-apiserver"} / (8 * 1024 * 1024 * 1024))

That being said:

1. If the output intended is in Gigabytes, then the 8 should not be present
2. If the output intended is in Gigabits, then the 8 should be in the numerator as you must first convert Bytes to Bits.

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For Example:

Assume: etcd_db_total_size_in_bytes = 3,589,934,592

Convert this to Gigabytes:

(3,589,934,592 Bytes) X (1 Kilobyte / 1024 Bytes) X ( 1 Megabyte / 1024 Kilobytes) X ( 1 Gigabyte / 1024 Megabytes) == 3.34 Gigabytes

Since the top number is in "Bytes" and not "Bits", then the 8 should not be in the denominator.

If the equation is intending to display Gigabits, the math would be wrong since the 8 should be on the "numerator" and not the "denominator".

(3,589,934,592 Bytes) X (8 Bits / 1 Byte) X (1 Kilobit / 1024 Bits) X ( 1 Megabit / 1024 Kilobit) X ( 1 Gigabit / 1024 Megabit) == 26.75 Gigabits

References
Please include a link to the lines where the error appears.