Cp-ansible: ์ฒด๊ณ„ํ™”๋œ ulimits

์— ๋งŒ๋“  2018๋…„ 09์›” 17์ผ  ยท  7์ฝ”๋ฉ˜ํŠธ  ยท  ์ถœ์ฒ˜: confluentinc/cp-ansible

์ปจํ”Œ๋ฃจ์–ธํŠธ ์Šฌ๋ž™์—์„œ

์ผ๋ฐ˜์ ์œผ๋กœ ์—ด๋ ค ์žˆ๋Š” ํŒŒ์ผ์˜ ์ˆ˜๋ฅผ ๋ณ€๊ฒฝํ•˜๋ ค๋ฉด ์ปค๋„ ๋งค๊ฐœ๋ณ€์ˆ˜(fs.file-nr)์™€ /etc/security/limits.conf๋„ ์ˆ˜์ •ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. systemd์—๋Š” ๋˜ ๋‹ค๋ฅธ ๋‹จ๊ณ„๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค. ๋ฐ๋ชฌ์ด ์ƒˆ ulimit ๋งค๊ฐœ๋ณ€์ˆ˜๋ฅผ ์„ ํƒํ•˜๋„๋ก *.service ํŒŒ์ผ๋„ ์ˆ˜์ •ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. ์ด ๊ฒŒ์‹œ๋ฌผ์€ ์ ์šฉ๋˜๋Š” ์ง€์‹œ๋ฌธ์„ ๋ณด์—ฌ์ค๋‹ˆ๋‹ค. ์ „๋‹ฌ๋œ /lib/systemd/system/confluent-\*.service ํŒŒ์ผ์— LimitNOFILE์„ ์ถ”๊ฐ€ํ•˜๋ฉด /proc/<pid>/limits ์—์„œ ์—ด๋ฆฐ ํŒŒ์ผ ์ œํ•œ์„ ์ธ์‹ํ•˜๋Š” Java ๋ฐ๋ชฌ์ด ํ‘œ์‹œ๋ฉ๋‹ˆ๋‹ค. ์ „๋‹ฌ๋œ ํŒŒ์ผ์€ ์ด์ œ ๋ชจ๋“  ์—…๊ทธ๋ ˆ์ด๋“œ์—์„œ ๊ด€๋ฆฌํ•ด์•ผ ํ•˜๋ฏ€๋กœ ์ „๋‹ฌ๋œ ์‹œ์Šคํ…œ ํŒŒ์ผ์— ๋Œ€ํ•œ ๋ฌธ์„œ ๋ฉ”๋ชจ ๋˜๋Š” ๋ณ€๊ฒฝ ์‚ฌํ•ญ์ด ์žˆ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.

https://confluentcommunity.slack.com/archives/C49R61XMM/p1537208485000100

์ฐธ์กฐ - https://unix.stackexchange.com/questions/345595/how-to-set-ulimits-on-service-with-systemd

enhancement

๋ชจ๋“  7 ๋Œ“๊ธ€

์ด์ƒ์ ์œผ๋กœ๋Š” LimitNOFile ๋“ฑ์— ๋Œ€ํ•œ ์ถฉ๋ถ„ํ•œ ๊ธฐ๋ณธ๊ฐ’์ด ์žˆ์–ด ์ด์— ๋Œ€ํ•ด ๊ฑฑ์ •ํ•  ํ•„์š”๊ฐ€ ์—†์ง€๋งŒ ์‹œ์Šคํ…œ ์„œ๋น„์Šค์—์„œ ์†์„ฑ์„ ์žฌ์ •์˜ํ•˜๋Š” ๊ธฐ๋Šฅ์„ ์ถ”๊ฐ€ํ•˜๋Š” ๊ฒƒ์ด ํ•ฉ๋ฆฌ์ ์ž…๋‹ˆ๋‹ค. ๋ธŒ๋กœ์ปค์™€ ๊ฐ™์€ ๋ชจ๋“  ์„œ๋น„์Šค์˜ ํ…œํ”Œ๋ฆฟ์— ์‰ฝ๊ฒŒ ์ถ”๊ฐ€ํ•  ์ˆ˜ ์žˆ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.

ํ”Œ๋ ˆ์ด๋ถ _ https://github.com/confluentinc/cp-ansible/blob/5.1.x/roles/confluent.kafka-broker/defaults/main.yml#L14_ ์—์„œ ๋ฉ”๋ชจ๋ฆฌ๋ฅผ ๋Š˜๋ฆฌ๊ฑฐ๋‚˜ ์ค„์ผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. , ์˜ˆ๋ฅผ ๋“ค์–ด

 environment:      
      KAFKA_HEAP_OPTS: "-Xmx24g"
      LimitNOFILE: 102400

๊ทธ๋Ÿฌ๋‚˜ ์‹œ์Šคํ…œ ํŒŒ์ผ์„ ์ ์ ˆํ•˜๊ฒŒ ํ…œํ”Œ๋ฆฟํ™”ํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.

[Service]
Environment=LimitNOFILE=102400

์™€ ๋‹ค๋ฅด๋‹ค

[Service]
LimitNOFILE=102400

์˜ฌ๋ฐ”๋ฅธ ๊ตฌํ˜„์ด ์—ฌ๊ธฐ ์žˆ์œผ๋ฉฐ ๊ฒ€ํ†  ๋Œ€๊ธฐ ์ค‘์ž…๋‹ˆ๋‹ค.
https://github.com/confluentinc/cp-ansible/pull/107

ํ›Œ๋ฅญํ•ฉ๋‹ˆ๋‹ค. ์ด ๊ตฌ์„ฑ ๋ฌธ์ œ๋ฅผ ๋„ˆ๋ฌด ์˜ค๋žซ๋™์•ˆ ํ•ด๊ฒฐํ•˜๋Š” ์˜ฌ๋ฐ”๋ฅธ ๋ฐฉ๋ฒ•์„ ์ฐพ์œผ๋ ค๊ณ  ๋…ธ๋ ฅํ–ˆ์Šต๋‹ˆ๋‹ค.

์ด ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•  ์ƒˆ ๋ฆด๋ฆฌ์Šค๊ฐ€ ๊ณง ์ถœ์‹œ๋œ๋‹ค๋Š” ๋น ๋ฅธ ์—…๋ฐ์ดํŠธ์ž…๋‹ˆ๋‹ค.

์—ด๋ฆฐ ํŒŒ์ผ ์ˆ˜๋ฅผ ์ฒ˜๋ฆฌํ•˜๋Š” ๋‹ค์Œ PR์„ ๋ณ‘ํ•ฉํ–ˆ์Šต๋‹ˆ๋‹ค.

https://github.com/confluentinc/cp-ansible/pull/124

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