NodeTaint

๋…ธ๋“œ ํ’€์˜ ๋ชจ๋“  Kubernetes ๋…ธ๋“œ์— ์ ์šฉ๋œ NodeTaint์ž…๋‹ˆ๋‹ค. Kubernetes taint๋ฅผ ํ†จ๋Ÿฌ๋ ˆ์ด์…˜(toleration)๊ณผ ํ•จ๊ป˜ ์‚ฌ์šฉํ•˜์—ฌ ์›Œํฌ๋กœ๋“œ๊ฐ€ ๋…ธ๋“œ์— ์˜ˆ์•ฝ๋˜๋Š” ๋ฐฉ์‹์„ ๊ด€๋ฆฌํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๋…ธ๋“œ taint๋Š” ์˜๊ตฌ์ ์ž…๋‹ˆ๋‹ค.

JSON ํ‘œํ˜„ 
{
  "key": string,
  "value": string,
  "effect": enum (Effect)
}
ํ•„๋“œ
key

string

ํšจ๊ณผ์™€ ์—ฐ๊ฒฐ๋œ ํ‚ค์ž…๋‹ˆ๋‹ค.
value

string

ํšจ๊ณผ์™€ ์—ฐ๊ฒฐ๋œ ๊ฐ’์ž…๋‹ˆ๋‹ค.
effect

enum (Effect)

taint ํšจ๊ณผ์ž…๋‹ˆ๋‹ค.

ํšจ๊ณผ

์‚ฌ์šฉ ๊ฐ€๋Šฅํ•œ taint ํšจ๊ณผ์ž…๋‹ˆ๋‹ค.

์—ด๊ฑฐํ˜•
EFFECT_UNSPECIFIED ์„ค์ •๋˜์ง€ ์•Š์•˜์Šต๋‹ˆ๋‹ค.
NO_SCHEDULE taint๋ฅผ ํ—ˆ์šฉํ•˜๋Š” ๋…ธ๋“œ๋ฅผ ์ œ์™ธํ•œ ๋…ธ๋“œ์— ์ƒˆ ํฌ๋“œ๊ฐ€ ์˜ˆ์•ฝ๋˜๋„๋ก ํ—ˆ์šฉํ•˜์ง€ ์•Š์ง€๋งŒ, ์Šค์ผ€์ค„๋Ÿฌ๋ฅผ ์‹œ์ž‘ํ•˜์ง€ ์•Š๊ณ  Kubelet์— ์ œ์ถœ๋œ ๋ชจ๋“  ํฌ๋“œ๋Š” ํ—ˆ์šฉํ•˜๊ณ  ์ด๋ฏธ ์‹คํ–‰ ์ค‘์ธ ๋ชจ๋“  ํฌ๋“œ๋„ ๊ณ„์† ์‹คํ–‰๋˜๋„๋ก ํ—ˆ์šฉํ•ฉ๋‹ˆ๋‹ค. ์Šค์ผ€์ค„๋Ÿฌ์— ์˜ํ•ด ์ ์šฉ๋ฉ๋‹ˆ๋‹ค.
PREFER_NO_SCHEDULE TaintEffectNoSchedule๊ณผ ๋น„์Šทํ•˜์ง€๋งŒ, ์Šค์ผ€์ค„๋Ÿฌ๋Š” ์ƒˆ ํฌ๋“œ๊ฐ€ ๋…ธ๋“œ์— ์˜ˆ์•ฝ๋˜๋Š” ๊ฒƒ์„ ์™„์ „ํžˆ ๊ธˆ์ง€ํ•˜๋Š” ๋Œ€์‹  ๋…ธ๋“œ์— ์ƒˆ ํฌ๋“œ ์˜ˆ์•ฝ์„ ์‹œ๋„ํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค. ์Šค์ผ€์ค„๋Ÿฌ์— ์˜ํ•ด ์ ์šฉ๋ฉ๋‹ˆ๋‹ค.
NO_EXECUTE ์ด๋ฏธ ์‹คํ–‰ ์ค‘์ธ ํฌ๋“œ ์ค‘ taint๋ฅผ ํ—ˆ์šฉํ•˜์ง€ ์•Š๋Š” ํฌ๋“œ๋ฅผ ๋ชจ๋‘ ์ œ๊ฑฐํ•ฉ๋‹ˆ๋‹ค. ํ˜„์žฌ NodeController์— ์˜ํ•ด ์ ์šฉ๋ฉ๋‹ˆ๋‹ค.