์ธ์ฆ์„œ 1
# k8s ์™ธ๋ถ€ ETCD HA ๊ตฌ์„ฑ

์ด์ „ ๊ธ€ ( "# k8s + keepalived + haproxy HA ๊ตฌ์„ฑ" ) ์—์„œ๋Š” ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค์˜ ํด๋Ÿฌ์Šคํ„ฐ์— ๋Œ€ํ•œ HA ๊ตฌ์„ฑ์„ ์ง„ํ–‰ํ–ˆ๋‹ค. ETCD๋ž€? ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค์˜ ๋ชจ๋“  ํด๋Ÿฌ์Šคํ„ฐ ๋ฐ์ดํ„ฐ๋ฅผ ๋‹ด๋Š” ์ผ์ข…์˜ DB๋กœ ์‚ฌ์šฉ๋˜๋ฉฐ, ํด๋Ÿฌ์Šคํ„ฐ์˜ ๊ฐ์ข… ์„œ๋ฒ„ ์ •๋ณด์™€ ์ƒํƒœ ์ •๋ณด๋ฅผ key-value ํ˜•ํƒœ๋กœ ์ €์žฅํ•œ๋‹ค. Kubeadm์€ ๊ธฐ๋ณธ์ ์œผ๋กœ kubelet์— ์˜ํ•ด ๊ด€๋ฆฌ๋˜๋Š” static pod์—์„œ Single Member ETCD ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ์‹คํ–‰ํ•ฉ๋‹ˆ๋‹ค. ์ด๋ ‡๊ฒŒ Single Member ETCD๋Š” ์„œ๋ฒ„๊ฐ€ Down๋˜๊ฒŒ ๋œ๋‹ค๋ฉด, ๊ณ  ๊ฐ€์šฉ์„ฑ์„ ์œ ์ง€ํ•  ์ˆ˜ ์—†๋‹ค. ๋”ฐ๋ผ์„œ kubeadm์„ ์‚ฌ์šฉํ•˜์—ฌ kubernetes ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ์„ค์ •ํ•  ๋•Œ ์™ธ๋ถ€ ETCD๋กœ ์‚ฌ์šฉํ•  ์ˆ˜์žˆ๋Š” 3๊ฐœ์˜ ๋ฉค๋ฒ„๋กœ ๊ตฌ์„ฑ๋œ ๊ณ  ๊ฐ€์šฉ์„ฑ ETCD ํด๋Ÿฌ์Šคํ„ฐ๋ฅผ ๋งŒ๋“œ๋Š” ๋ฐฉ๋ฒ•์— ๋Œ€ํ•ด ..
Cloud/Kubernates 2019.09.10
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