ๆฑไบฌใชใผใธใงใณ (AP-NORTHEAST-1) ใง็บ็ใใ Amazon EC2 ใจ Amazon EBS ใฎไบ่ฑกๆฆ่ฆ
2019ๅนด8ๆ28ๆฅ(ๆฅๆฌๆ้)ๆดๆฐ:
ๆๅใฎไบ่ฑกๆฆ่ฆใง่จๅใใ้ใใไปๅใฎใคใใณใใฏใๆฑไบฌใชใผใธใงใณใฎ1ใคใฎใขใใคใฉใใชใใฃใพใผใณ(AZ)ใฎไธ้จใซๅฝฑ้ฟใไธใใพใใใใใฎๅฝฑ้ฟใฏๅฝ่ฉฒ AZ ใฎ Amazon EC2 ใใใณ Amazon EBS ใฎใชใฝใผในใซๅฏพใใใใฎใงใใใๅบ็คใจใใฆใใ EC2 ใคใณในใฟใณในใๅฝฑ้ฟใๅใใๅ ดๅใซใฏใๅฝ่ฉฒ AZ ใฎไปใฎใตใผใใน(RDSใ Redshiftใ ElastiCache ใใใณ Workspaces ็ญ)ใซใๅฝฑ้ฟใใใใพใใใใๅฎขๆงใจไปๅใฎใคใใณใใฎ่ชฟๆปใใใใซ้ฒใใใจใใใ ๅๅฅใฎใฑใผในใฎใใใคใใงใ่คๆฐใฎใขใใคใฉใใชใใฃใพใผใณใง็จผๅใใฆใใใๅฎขๆงใฎใขใใชใฑใผใทใงใณใซใใไบๆใใฌๅฝฑ้ฟ(ไพใใฐใ Application Load Balancer ใ AWS Web Application Firewall ใในใใฃใใญใผใปใใทใงใณใจ็ตใฟๅใใใฆใๅฉ็จใใฆใใใๅฎขๆงใฎไธ้จใงใๆณๅฎใใใใใ้ซใๅฒๅใงใชใฏใจในใใ Internal Server Error ใ่ฟใ)ใใใฃใใใจใ AWS ใงใฏ็ขบ่ชใใฆใใใพใใAWS ใงใฏใๅๅฅใฎๅ้กใซใคใใฆใฎ่ฉณ็ดฐใชๆ
ๅ ฑใใๅฝฑ้ฟใๅใใใๅฎขๆงใซ็ดๆฅใๅ
ฑๆใ่กใไบๅฎใงใใ
2019ๅนด8ๆ28ๆฅ(ๆฅๆฌๆ้)ๆดๆฐ:
ๆๅใฎไบ่ฑกๆฆ่ฆใง่จๅใใ้ใใไปๅใฎใคใใณใใฏใๆฑไบฌใชใผใธใงใณใฎ1ใคใฎใขใใคใฉใใชใใฃใพใผใณ(AZ)ใฎไธ้จใซๅฝฑ้ฟใไธใใพใใใใใฎๅฝฑ้ฟใฏๅฝ่ฉฒ AZ ใฎ Amazon EC2 ใใใณ Amazon EBS ใฎใชใฝใผในใซๅฏพใใใใฎใงใใใๅบ็คใจใใฆใใ EC2 ใคใณในใฟใณในใๅฝฑ้ฟใๅใใๅ ดๅใซใฏใๅฝ่ฉฒ AZ ใฎไปใฎใตใผใใน(RDSใ Redshiftใ ElastiCache ใใใณ Workspaces ็ญ)ใซใๅฝฑ้ฟใใใใพใใใใๅฎขๆงใจไปๅใฎใคใใณใใฎ่ชฟๆปใใใใซ้ฒใใใจใใใ ๅๅฅใฎใฑใผในใฎใใใคใใงใ่คๆฐใฎใขใใคใฉใใชใใฃใพใผใณใง็จผๅใใฆใใใๅฎขๆงใฎใขใใชใฑใผใทใงใณใซใใไบๆใใฌๅฝฑ้ฟ(ไพใใฐใ Application Load Balancer ใ AWS Web Application Firewall ใในใใฃใใญใผใปใใทใงใณใจ็ตใฟๅใใใฆใๅฉ็จใใฆใใใๅฎขๆงใฎไธ้จใงใๆณๅฎใใใใใ้ซใๅฒๅใงใชใฏใจในใใ Internal Server Error ใ่ฟใ)ใใใฃใใใจใ AWS ใงใฏ็ขบ่ชใใฆใใใพใใAWS ใงใฏใๅๅฅใฎๅ้กใซใคใใฆใฎ่ฉณ็ดฐใชๆ
ๅ ฑใใๅฝฑ้ฟใๅใใใๅฎขๆงใซ็ดๆฅใๅ
ฑๆใ่กใไบๅฎใงใใ
2019ๅนด8ๆ25ๆฅ(ๆฅๆฌๆ้)ๅ็:
ๆฅๆฌๆ้ 2019ๅนด8ๆ23ๆฅ 12:36 ใใใๆฑไบฌใชใผใธใงใณ (AP-NORTHEAST-1) ใฎๅไธใฎใขใใคใฉใใชใใฃใพใผใณใงใใชใผใใผใใผใใซใใไธๅฎใฎๅฒๅใฎ EC2 ใตใผใใฎๅๆญขใ็บ็ใใพใใใใใฎ็ตๆใๅฝ่ฉฒใขใใคใฉใใชใใฃใพใผใณใฎ EC2 ใคใณในใฟใณในใธใฎๅฝฑ้ฟๅใณ EBS ใใชใฅใผใ ใฎใใใฉใผใใณในใฎๅฃๅใ็บ็ใใพใใใใใฎใชใผใใผใใผใใฏใๅฝฑ้ฟใๅใใใขใใคใฉใใชใใฃใพใผใณไธญใฎไธ้จใฎๅ้ทๅใใใ็ฉบ่ชฟ่จญๅใฎ็ฎก็ใทในใใ ้ๅฎณใๅๅ ใงใใๆฅๆฌๆ้ 15:21 ใซๅทๅด่ฃ ็ฝฎใฏๅพฉๆงใใๅฎคๆธฉใ้ๅธธ็ถๆ ใซๆปใๅงใใพใใใๅฎคๆธฉใ้ๅธธ็ถๆ ใซๆปใฃใใใจใงใๅฝฑ้ฟใๅใใใคใณในใฟใณในใฎ้ปๆบใๅๅพฉใใพใใใๆฅๆฌๆ้ 18:30 ใพใงใซๅฝฑ้ฟใๅใใ EC2 ใคใณในใฟใณในใจ EBS ใใชใฅใผใ ใฎๅคง้จๅใฏๅๅพฉใใพใใใๅฐๆฐใฎ EC2 ใคใณในใฟใณในใจ EBS ใใชใฅใผใ ใฏใ้ปๆบใฎๅชๅคฑใจ้ๅคงใช็ฑ้ใฎๅฝฑ้ฟใๅใใใใผใใฆใงใขใในใไธใงๅไฝใใฆใใพใใใใใใใฎใคใณในใฟใณในใจใใชใฅใผใ ใฎๅพฉๆงใซใฏๆ้ใใใใใไธ้จใซใคใใพใใฆใฏๅบ็คใฎใใผใใฆใงใขใฎ้ๅฎณใซใใใชใฟใคใขใๅฟ ่ฆใงใใใ
EC2 ใคใณในใฟใณในใจ EBS ใใชใฅใผใ ใธใฎๅฝฑ้ฟใซๅ ใใฆใEC2 RunInstances API ใซใๅฝฑ้ฟใ็บ็ใใพใใใๆฅๆฌๆ้ 2019ๅนด8ๆ23ๆฅ 13:21 ใซใๅฝฑ้ฟใฎ็บ็ใใใขใใคใฉใใชใใฃใพใผใณใงใฎ EC2 ใคใณในใฟใณในใฎ่ตทๅใใใใณๅช็ญๆงใใผใฏใณ๏ผ่คๆฐใฎใคใณในใฟใณในใ่ตทๅใใใๅฑ้บใชใใใคใณในใฟใณในใฎ่ตทๅใใชใใฉใคใใๆฉ่ฝ๏ผใไฝฟ็จใใฆ RunInstances API ใๆฑไบฌใชใผใธใงใณใงๅฎ่กใใๅ ดๅใซใใจใฉใผ็ใฎไธๆใ็บ็ใใพใใใใใฎไปใฎ EC2 API ใๅช็ญๆงใใผใฏใณใไฝฟ็จใใชใ EC2 ใคใณในใฟใณในใฎ่ตทๅใฏๆญฃๅธธใซๅไฝใใฆใใใพใใใใใฎๅ้กใฏใๅช็ญๆงใใผใฏใณใไฝฟ็จใใ Auto Scaling ใฐใซใผใใใใฎใคใณในใฟใณในใฎๆฐ่ฆ่ตทๅใ้ปๅฎณใใพใใใๆฅๆฌๆ้ 14:51 ใซใใจใณใธใใขใฏใๅช็ญๆงใใผใฏใณใจ Auto Scaling ใฐใซใผใใฎๅ้กใ่งฃๆฑบใใพใใใๅฝฑ้ฟใฎ็บ็ใใใขใใคใฉใใชใใฃใพใผใณใงใฎใๆฐใใ EC2 ใคใณในใฟใณในใฎ่ตทๅใซใคใใฆใฎใจใฉใผ็ๅไธใฏใEC2 ใณใณใใญใผใซใใฌใผใณใตใใทในใใ ใฎใชในใใขใๅฎไบใใๆฅๆฌๆ้ 16:05 ใพใง็ถ็ถใใพใใใๅฝฑ้ฟใฎ็บ็ใใ EBS ใใชใฅใผใ ใฎในใใใใทใงใใใฎไฝๆใใใใฎๆ้ใซใจใฉใผ็ใฎไธๆใ็บ็ใใพใใใ
ไปๅใฎไบ่ฑกใฏใใผใฟใปใณใฟใผใงไฝฟ็จใใใใใใคใใฎๅทๅดใทในใใ ใฎๅถๅพกใจๆ้ฉๅใซไฝฟ็จใใใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใฎ้ๅฎณใซใใฃใฆๅผใ่ตทใใใใพใใใๅถๅพกใทในใใ ใฏใ้ซๅฏ็จๆงใๅฎ็พใใใใใซ่คๆฐใฎใในใใงๅฎ่กใใใพใใใใฎๅถๅพกใทในใใ ใซใฏใใใกใณใๅทๅด่ฃ ็ฝฎใๆธฉๅบฆใปใณใตใผใชใฉใฎใตใผใใใผใใฃ่ฃฝใใใคในใจใฎ้ไฟกใๅฏ่ฝใซใใใตใผใใใผใใฃ่ฃฝใฎใณใผใใๅซใพใใฆใใฆใ็ดๆฅใพใใฏ็ตใฟ่พผใฟใใญใฐใฉใใใซใญใธใใฏใณใณใใญใผใฉ๏ผPLC๏ผใไปใใฆ้ไฟกใใๅฎ้ใฎใใใคในใจ้ไฟกใใพใใไปๅใฎไบ่ฑก็บ็ใฎ็ดๅใซใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใฏใๅถๅพกใในใ็พคใใๅถๅพกใในใใฎ 1 ใคใๅคใๅฆ็ใ่กใชใฃใฆใใพใใใใใฎใใใชใใงใคใซใชใผใใผใฎ้ใๆฐใใๅถๅพกใในใใใใผใฟใปใณใฟใผใฎๆๆฐ็ถๆณใไฟๆใใ็บใซใๅถๅพกใทในใใ ใฏใไปใฎๅถๅพกใทในใใ ใใใณๅถๅพกใใใใผใฟใปใณใฟใผๆฉๅจ (ใใผใฟใปใณใฟใผๅ จไฝใฎๅทๅด่ฃ ็ฝฎใใใณๆธฉๅบฆใปใณใตใผใชใฉ) ใจๆ ๅ ฑใไบคๆใใๅฟ ่ฆใใใใพใใใตใผใใใผใใฃ่ฃฝใฎๅถๅพกใทในใใ ใซใใใใญใธใใฏใฎใใฐใซใใใใใฎๆ ๅ ฑไบคๆใๅถๅพกใทในใใ ใจใใผใฟใปใณใฟใผใฎใใใคใน้ใง้ๅบฆใซ็บ็ใใๆ็ต็ใซใฏๅถๅพกใทในใใ ใๅฟ็ญใใชใใชใใพใใใAWS ใฎใใผใฟใปใณใฟใผใฏใใใผใฟใปใณใฟใผใฎๅถๅพกใทในใใ ใซ้ๅฎณใ็บ็ใใๅ ดๅใๅถๅพกใทในใใ ใฎๆฉ่ฝใๅๅพฉใใใพใงๅทๅดใทในใใ ใๆๅคงๅทๅดใขใผใใซใชใใใ่จญ่จใใใฆใใพใใใใใฏใใผใฟใปใณใฟใผใฎใปใจใใฉใงๆญฃๅธธใซๆฉ่ฝใใฆใใพใใใใใใผใฟใปใณใฟใผใฎใใไธ้จใงๅทๅดใทในใใ ใใใฎๅฎๅ จใชๅทๅดๆงๆใซๆญฃใใ็งป่กใงใใๅๆญขใใพใใใ่ฟฝๅ ใฎๅฎๅ จ็ญใจใใฆใAWS ใฎใใผใฟใปใณใฟใผใชใใฌใผใฟใฏใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใ่ฟๅใๅทๅดใทในใใ ใใใใผใธใใขใผใใซใใใใจใงๆ ้ใซ้ใใฆใฎ็ฑ้ขจใ็ด ๆฉใๆๅบใใ่ฝๅใๆใฃใฆใใพใใ้็จใใผใ ใฏใๅฝฑ้ฟใฎใใใใผใฟใปใณใฟใผใฎใจใชใขใงๅทๅดใทในใใ ใใใใผใธใใขใผใใซใใใใจใใพใใใใใใใๅคฑๆใใพใใใใใฎๆ็นใงใใใผใฟใปใณใฟใผใฎๅฝฑ้ฟใๅใใใจใชใขใฎๆธฉๅบฆใไธๆใๅงใใใตใผใใผใฎๆธฉๅบฆใ่จฑๅฎน้ๅบฆใ่ถ ใใใตใผใใผใฎ้ปๆบใๅๆญขใๅงใใพใใใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใๅฉ็จใงใใชใใฃใใใใใใผใฟใปใณใฟใผใชใใฌใผใฟใฏใใผใฟใปใณใฟใผใจๅทๅดใทในใใ ใฎๅฅๅ จๆงใจ็ถๆ ใซๅฏพใใๅฏ่ฆๆงใๆๅฐ้ใซ้ๅฎใใใฆใใพใใใใใฎ็ถๆณใๆนๅใใใใใใซใฏใชใใฌใผใฟใฏๅฝฑ้ฟใๅใใใในใฆใฎๆฉๅจใๆๅใง่ชฟๆปใใฆใชใปใใใใๆๅคงๅทๅดใขใผใใซใใๅฟ ่ฆใใใใพใใใใใใใฎๅฏพๅฟๆใซไธ้จใฎ็ฉบ่ชฟใฆใใใใๅถๅพกใใ PLC ใๅฟ็ญใใชใใใจใ่ฆใคใใใพใใใใใใใฎ PLC ใฏใชใปใใใใๅฟ ่ฆใใใใใพใใใฎ้ๅฎณใซใใใใใฉใซใใฎๅทๅดใขใผใใจใใใผใธใใขใผใใๆญฃๅธธใซๅไฝใใฆใใชใใใจใ็ขบ่ชใงใใพใใใใใใใฎใณใณใใญใผใฉใใชใปใใใใใใจใๅฝฑ้ฟใฎใใฃใใใผใฟใปใณใฟใผใฎใจใชใขใธๅทๅดใ่กใใๅฎคๆธฉใไฝไธใๅงใใพใใใ
็พๅจใใใตใผใใใผใใฃใฎใใณใใผใจๅๅใใๅถๅพกใทในใใ ใจๅฟ็ญใใชใใชใฃใ PLC ใฎไธก้ขใๅผใ่ตทใใใใใฐใไธฆใณใซใใฐใซใใๅฝฑ้ฟใฎ่ฉณ็ดฐใช่ชฟๆปใ้ฒใใฆใใใพใใไธฆ่กใใฆใไบ่ฑกใฎๅ็บใ้ฒใใใใใใฐใๅผใ่ตทใใใๅถๅพกใทในใใ ใฎใใงใคใซใชใผใใผใขใผใใ็กๅนใซใใพใใใใพใใใใไธใไธไบ่ฑกใๅ็พใใฆใๅฏพ็ญใๅใใใใใใชใใฌใผใฟใซใใฎๅบฆใฎไบ่ฑกใฎๆค็ฅๆนๆณใจๅพฉๆงๆนๆณใฎใใฌใผใใณใฐใๅฎๆฝใใพใใใใใใซใใใใใๅๆงใฎไบ่ฑกใ็บ็ใใฆใใใๅฎขๆงใธใฎๅฝฑ้ฟใ็บ็ใใๅใซใใทในใใ ใฎใชใปใใใๅฏ่ฝใซใชใฃใฆใใใพใใใใฎไปใซใใใใใผใธใใขใผใใ PLC ใๅฎๅ จใซใใคใในใงใใใใใ็ฉบ่ชฟใฆใใใใๅถๅพกใใๆนๆณใๅคๆดใใใใไฝๆฅญใ้ฒใใฆใใใพใใใใใฏใๆๆฐใฎใใผใฟใปใณใฟใผใงไฝฟ็จใใฆใใๆนๆณใงใPLC ใๅฟ็ญใใชใใชใฃใ้ใงใใใใผใธใใขใผใใๆฉ่ฝใใใใใซใใใใใฎๆนๆณใงใใ
ใใฎๅบฆใฎไบ่ฑก็บ็ๆใ็ฐใชใใขใใคใฉใใชใใฃใพใผใณใฎ EC2 ใคใณในใฟใณในใ EBS ใใชใฅใผใ ใธใฎๅฝฑ้ฟใฏใใใใพใใใงใใใ่คๆฐใฎใขใใคใฉใใชใใฃใพใผใณใงใขใใชใฑใผใทใงใณใ็จผๅใใใฆใใใๅฎขๆงใฏใไบ่ฑก็บ็ไธญใๅฏ็จๆงใ็ขบไฟใงใใฆใใ็ถๆณใงใใใใขใใชใฑใผใทใงใณใงๆๅคงใฎๅฏ็จๆงใๅฟ ่ฆใจใใใใๅฎขๆงใซใฏใใใฎ่คๆฐใขใใคใฉใใชใใฃใพใผใณใฎใขใผใญใใฏใใฃใซๅใฃใฆใขใใชใฑใผใทใงใณใ็จผๅใใใใใจใๅผใ็ถใๆจๅฅจใใพใ๏ผใๅฎขๆงใซใจใฃใฆ้ซๅฏ็จๆงใซ่ชฒ้กใ็ใๅพใๅ จใฆใฎใขใใชใฑใผใทใงใณใฎใณใณใใผใใณใใฏใใใฎ่้ๅฎณๆงใๅฎ็พใใๆนๆณใฎไธใง็จผๅใใใใใจใๅผทใๆจๅฅจใใพใ๏ผใ
ใใฎๅบฆใฎไบ่ฑกใซใใใใ่ฟทๆใใใใใใพใใใใจใๅฟใใใ่ฉซใณ็ณใไธใใพใใAWS ใตใผใในใใๅฎขๆงใใธใในใซๆฅตใใฆ้่ฆใงใใ็นใ็่งฃใใฆใใใพใใAWS ใฏๅฎๅ
จใงใฏใชใใชใใฌใผใทใงใณใซใฏๆฑบใใฆๆบ่ถณใใใใจใฏใใใพใใใใใฎๅบฆใฎไบ่ฑกใใๅญฆใถใใใซๅบๆฅๅพใๅ
จใฆใฎใใจใ่กใใAWS ใตใผใในใฎๅไธใซๅชใใฆใพใใใพใใ
2019ๅนด8ๆ25ๆฅ(ๆฅๆฌๆ้)ๅ็:
ๆฅๆฌๆ้ 2019ๅนด8ๆ23ๆฅ 12:36 ใใใๆฑไบฌใชใผใธใงใณ (AP-NORTHEAST-1) ใฎๅไธใฎใขใใคใฉใใชใใฃใพใผใณใงใใชใผใใผใใผใใซใใไธๅฎใฎๅฒๅใฎ EC2 ใตใผใใฎๅๆญขใ็บ็ใใพใใใใใฎ็ตๆใๅฝ่ฉฒใขใใคใฉใใชใใฃใพใผใณใฎ EC2 ใคใณในใฟใณในใธใฎๅฝฑ้ฟๅใณ EBS ใใชใฅใผใ ใฎใใใฉใผใใณในใฎๅฃๅใ็บ็ใใพใใใใใฎใชใผใใผใใผใใฏใๅฝฑ้ฟใๅใใใขใใคใฉใใชใใฃใพใผใณไธญใฎไธ้จใฎๅ้ทๅใใใ็ฉบ่ชฟ่จญๅใฎ็ฎก็ใทในใใ ้ๅฎณใๅๅ ใงใใๆฅๆฌๆ้ 15:21 ใซๅทๅด่ฃ ็ฝฎใฏๅพฉๆงใใๅฎคๆธฉใ้ๅธธ็ถๆ ใซๆปใๅงใใพใใใๅฎคๆธฉใ้ๅธธ็ถๆ ใซๆปใฃใใใจใงใๅฝฑ้ฟใๅใใใคใณในใฟใณในใฎ้ปๆบใๅๅพฉใใพใใใๆฅๆฌๆ้ 18:30 ใพใงใซๅฝฑ้ฟใๅใใ EC2 ใคใณในใฟใณในใจ EBS ใใชใฅใผใ ใฎๅคง้จๅใฏๅๅพฉใใพใใใๅฐๆฐใฎ EC2 ใคใณในใฟใณในใจ EBS ใใชใฅใผใ ใฏใ้ปๆบใฎๅชๅคฑใจ้ๅคงใช็ฑ้ใฎๅฝฑ้ฟใๅใใใใผใใฆใงใขใในใไธใงๅไฝใใฆใใพใใใใใใใฎใคใณในใฟใณในใจใใชใฅใผใ ใฎๅพฉๆงใซใฏๆ้ใใใใใไธ้จใซใคใใพใใฆใฏๅบ็คใฎใใผใใฆใงใขใฎ้ๅฎณใซใใใชใฟใคใขใๅฟ ่ฆใงใใใ
EC2 ใคใณในใฟใณในใจ EBS ใใชใฅใผใ ใธใฎๅฝฑ้ฟใซๅ ใใฆใEC2 RunInstances API ใซใๅฝฑ้ฟใ็บ็ใใพใใใๆฅๆฌๆ้ 2019ๅนด8ๆ23ๆฅ 13:21 ใซใๅฝฑ้ฟใฎ็บ็ใใใขใใคใฉใใชใใฃใพใผใณใงใฎ EC2 ใคใณในใฟใณในใฎ่ตทๅใใใใณๅช็ญๆงใใผใฏใณ๏ผ่คๆฐใฎใคใณในใฟใณในใ่ตทๅใใใๅฑ้บใชใใใคใณในใฟใณในใฎ่ตทๅใใชใใฉใคใใๆฉ่ฝ๏ผใไฝฟ็จใใฆ RunInstances API ใๆฑไบฌใชใผใธใงใณใงๅฎ่กใใๅ ดๅใซใใจใฉใผ็ใฎไธๆใ็บ็ใใพใใใใใฎไปใฎ EC2 API ใๅช็ญๆงใใผใฏใณใไฝฟ็จใใชใ EC2 ใคใณในใฟใณในใฎ่ตทๅใฏๆญฃๅธธใซๅไฝใใฆใใใพใใใใใฎๅ้กใฏใๅช็ญๆงใใผใฏใณใไฝฟ็จใใ Auto Scaling ใฐใซใผใใใใฎใคใณในใฟใณในใฎๆฐ่ฆ่ตทๅใ้ปๅฎณใใพใใใๆฅๆฌๆ้ 14:51 ใซใใจใณใธใใขใฏใๅช็ญๆงใใผใฏใณใจ Auto Scaling ใฐใซใผใใฎๅ้กใ่งฃๆฑบใใพใใใๅฝฑ้ฟใฎ็บ็ใใใขใใคใฉใใชใใฃใพใผใณใงใฎใๆฐใใ EC2 ใคใณในใฟใณในใฎ่ตทๅใซใคใใฆใฎใจใฉใผ็ๅไธใฏใEC2 ใณใณใใญใผใซใใฌใผใณใตใใทในใใ ใฎใชในใใขใๅฎไบใใๆฅๆฌๆ้ 16:05 ใพใง็ถ็ถใใพใใใๅฝฑ้ฟใฎ็บ็ใใ EBS ใใชใฅใผใ ใฎในใใใใทใงใใใฎไฝๆใใใใฎๆ้ใซใจใฉใผ็ใฎไธๆใ็บ็ใใพใใใ
ไปๅใฎไบ่ฑกใฏใใผใฟใปใณใฟใผใงไฝฟ็จใใใใใใคใใฎๅทๅดใทในใใ ใฎๅถๅพกใจๆ้ฉๅใซไฝฟ็จใใใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใฎ้ๅฎณใซใใฃใฆๅผใ่ตทใใใใพใใใๅถๅพกใทในใใ ใฏใ้ซๅฏ็จๆงใๅฎ็พใใใใใซ่คๆฐใฎใในใใงๅฎ่กใใใพใใใใฎๅถๅพกใทในใใ ใซใฏใใใกใณใๅทๅด่ฃ ็ฝฎใๆธฉๅบฆใปใณใตใผใชใฉใฎใตใผใใใผใใฃ่ฃฝใใใคในใจใฎ้ไฟกใๅฏ่ฝใซใใใตใผใใใผใใฃ่ฃฝใฎใณใผใใๅซใพใใฆใใฆใ็ดๆฅใพใใฏ็ตใฟ่พผใฟใใญใฐใฉใใใซใญใธใใฏใณใณใใญใผใฉ๏ผPLC๏ผใไปใใฆ้ไฟกใใๅฎ้ใฎใใใคในใจ้ไฟกใใพใใไปๅใฎไบ่ฑก็บ็ใฎ็ดๅใซใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใฏใๅถๅพกใในใ็พคใใๅถๅพกใในใใฎ 1 ใคใๅคใๅฆ็ใ่กใชใฃใฆใใพใใใใใฎใใใชใใงใคใซใชใผใใผใฎ้ใๆฐใใๅถๅพกใในใใใใผใฟใปใณใฟใผใฎๆๆฐ็ถๆณใไฟๆใใ็บใซใๅถๅพกใทในใใ ใฏใไปใฎๅถๅพกใทในใใ ใใใณๅถๅพกใใใใผใฟใปใณใฟใผๆฉๅจ (ใใผใฟใปใณใฟใผๅ จไฝใฎๅทๅด่ฃ ็ฝฎใใใณๆธฉๅบฆใปใณใตใผใชใฉ) ใจๆ ๅ ฑใไบคๆใใๅฟ ่ฆใใใใพใใใตใผใใใผใใฃ่ฃฝใฎๅถๅพกใทในใใ ใซใใใใญใธใใฏใฎใใฐใซใใใใใฎๆ ๅ ฑไบคๆใๅถๅพกใทในใใ ใจใใผใฟใปใณใฟใผใฎใใใคใน้ใง้ๅบฆใซ็บ็ใใๆ็ต็ใซใฏๅถๅพกใทในใใ ใๅฟ็ญใใชใใชใใพใใใAWS ใฎใใผใฟใปใณใฟใผใฏใใใผใฟใปใณใฟใผใฎๅถๅพกใทในใใ ใซ้ๅฎณใ็บ็ใใๅ ดๅใๅถๅพกใทในใใ ใฎๆฉ่ฝใๅๅพฉใใใพใงๅทๅดใทในใใ ใๆๅคงๅทๅดใขใผใใซใชใใใ่จญ่จใใใฆใใพใใใใใฏใใผใฟใปใณใฟใผใฎใปใจใใฉใงๆญฃๅธธใซๆฉ่ฝใใฆใใพใใใใใใผใฟใปใณใฟใผใฎใใไธ้จใงๅทๅดใทในใใ ใใใฎๅฎๅ จใชๅทๅดๆงๆใซๆญฃใใ็งป่กใงใใๅๆญขใใพใใใ่ฟฝๅ ใฎๅฎๅ จ็ญใจใใฆใAWS ใฎใใผใฟใปใณใฟใผใชใใฌใผใฟใฏใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใ่ฟๅใๅทๅดใทในใใ ใใใใผใธใใขใผใใซใใใใจใงๆ ้ใซ้ใใฆใฎ็ฑ้ขจใ็ด ๆฉใๆๅบใใ่ฝๅใๆใฃใฆใใพใใ้็จใใผใ ใฏใๅฝฑ้ฟใฎใใใใผใฟใปใณใฟใผใฎใจใชใขใงๅทๅดใทในใใ ใใใใผใธใใขใผใใซใใใใจใใพใใใใใใใๅคฑๆใใพใใใใใฎๆ็นใงใใใผใฟใปใณใฟใผใฎๅฝฑ้ฟใๅใใใจใชใขใฎๆธฉๅบฆใไธๆใๅงใใใตใผใใผใฎๆธฉๅบฆใ่จฑๅฎน้ๅบฆใ่ถ ใใใตใผใใผใฎ้ปๆบใๅๆญขใๅงใใพใใใใใผใฟใปใณใฟใผๅถๅพกใทในใใ ใๅฉ็จใงใใชใใฃใใใใใใผใฟใปใณใฟใผใชใใฌใผใฟใฏใใผใฟใปใณใฟใผใจๅทๅดใทในใใ ใฎๅฅๅ จๆงใจ็ถๆ ใซๅฏพใใๅฏ่ฆๆงใๆๅฐ้ใซ้ๅฎใใใฆใใพใใใใใฎ็ถๆณใๆนๅใใใใใใซใฏใชใใฌใผใฟใฏๅฝฑ้ฟใๅใใใในใฆใฎๆฉๅจใๆๅใง่ชฟๆปใใฆใชใปใใใใๆๅคงๅทๅดใขใผใใซใใๅฟ ่ฆใใใใพใใใใใใใฎๅฏพๅฟๆใซไธ้จใฎ็ฉบ่ชฟใฆใใใใๅถๅพกใใ PLC ใๅฟ็ญใใชใใใจใ่ฆใคใใใพใใใใใใใฎ PLC ใฏใชใปใใใใๅฟ ่ฆใใใใใพใใใฎ้ๅฎณใซใใใใใฉใซใใฎๅทๅดใขใผใใจใใใผใธใใขใผใใๆญฃๅธธใซๅไฝใใฆใใชใใใจใ็ขบ่ชใงใใพใใใใใใใฎใณใณใใญใผใฉใใชใปใใใใใใจใๅฝฑ้ฟใฎใใฃใใใผใฟใปใณใฟใผใฎใจใชใขใธๅทๅดใ่กใใๅฎคๆธฉใไฝไธใๅงใใพใใใ
็พๅจใใใตใผใใใผใใฃใฎใใณใใผใจๅๅใใๅถๅพกใทในใใ ใจๅฟ็ญใใชใใชใฃใ PLC ใฎไธก้ขใๅผใ่ตทใใใใใฐใไธฆใณใซใใฐใซใใๅฝฑ้ฟใฎ่ฉณ็ดฐใช่ชฟๆปใ้ฒใใฆใใใพใใไธฆ่กใใฆใไบ่ฑกใฎๅ็บใ้ฒใใใใใใฐใๅผใ่ตทใใใๅถๅพกใทในใใ ใฎใใงใคใซใชใผใใผใขใผใใ็กๅนใซใใพใใใใพใใใใไธใไธไบ่ฑกใๅ็พใใฆใๅฏพ็ญใๅใใใใใใชใใฌใผใฟใซใใฎๅบฆใฎไบ่ฑกใฎๆค็ฅๆนๆณใจๅพฉๆงๆนๆณใฎใใฌใผใใณใฐใๅฎๆฝใใพใใใใใใซใใใใใๅๆงใฎไบ่ฑกใ็บ็ใใฆใใใๅฎขๆงใธใฎๅฝฑ้ฟใ็บ็ใใๅใซใใทในใใ ใฎใชใปใใใๅฏ่ฝใซใชใฃใฆใใใพใใใใฎไปใซใใใใใผใธใใขใผใใ PLC ใๅฎๅ จใซใใคใในใงใใใใใ็ฉบ่ชฟใฆใใใใๅถๅพกใใๆนๆณใๅคๆดใใใใไฝๆฅญใ้ฒใใฆใใใพใใใใใฏใๆๆฐใฎใใผใฟใปใณใฟใผใงไฝฟ็จใใฆใใๆนๆณใงใPLC ใๅฟ็ญใใชใใชใฃใ้ใงใใใใผใธใใขใผใใๆฉ่ฝใใใใใซใใใใใฎๆนๆณใงใใ
ใใฎๅบฆใฎไบ่ฑก็บ็ๆใ็ฐใชใใขใใคใฉใใชใใฃใพใผใณใฎ EC2 ใคใณในใฟใณในใ EBS ใใชใฅใผใ ใธใฎๅฝฑ้ฟใฏใใใใพใใใงใใใ่คๆฐใฎใขใใคใฉใใชใใฃใพใผใณใงใขใใชใฑใผใทใงใณใ็จผๅใใใฆใใใๅฎขๆงใฏใไบ่ฑก็บ็ไธญใๅฏ็จๆงใ็ขบไฟใงใใฆใใ็ถๆณใงใใใใขใใชใฑใผใทใงใณใงๆๅคงใฎๅฏ็จๆงใๅฟ ่ฆใจใใใใๅฎขๆงใซใฏใใใฎ่คๆฐใขใใคใฉใใชใใฃใพใผใณใฎใขใผใญใใฏใใฃใซๅใฃใฆใขใใชใฑใผใทใงใณใ็จผๅใใใใใจใๅผใ็ถใๆจๅฅจใใพใ๏ผใๅฎขๆงใซใจใฃใฆ้ซๅฏ็จๆงใซ่ชฒ้กใ็ใๅพใๅ จใฆใฎใขใใชใฑใผใทใงใณใฎใณใณใใผใใณใใฏใใใฎ่้ๅฎณๆงใๅฎ็พใใๆนๆณใฎไธใง็จผๅใใใใใจใๅผทใๆจๅฅจใใพใ๏ผใ
ใใฎๅบฆใฎไบ่ฑกใซใใใใ่ฟทๆใใใใใใพใใใใจใๅฟใใใ่ฉซใณ็ณใไธใใพใใAWS ใตใผใในใใๅฎขๆงใใธใในใซๆฅตใใฆ้่ฆใงใใ็นใ็่งฃใใฆใใใพใใAWS ใฏๅฎๅ
จใงใฏใชใใชใใฌใผใทใงใณใซใฏๆฑบใใฆๆบ่ถณใใใใจใฏใใใพใใใใใฎๅบฆใฎไบ่ฑกใใๅญฆใถใใใซๅบๆฅๅพใๅ
จใฆใฎใใจใ่กใใAWS ใตใผใในใฎๅไธใซๅชใใฆใพใใใพใใ
As we mentioned in our initial summary, this event impacted a small portion of a single Availability Zone (โAZโ) in our Tokyo Region. The impact was to the Amazon EC2 and Amazon EBS resources in that AZ, though some other services (such as RDS, Redshift, ElastiCache, and Workspaces) would have seen some impact in that AZ if their underlying EC2 instances were affected. As we have further investigated this event with our customers, we have discovered a few isolated cases where customers' applications running across multiple Availability Zones saw unexpected impact (i.e. some customers using Application Load Balancer in combination with AWS Web Application Firewall or sticky sessions, saw a higher than expected percent of requests return an Internal Server Error). We are sharing additional details on these isolated issues directly with impacted customers.
As we mentioned in our initial summary, this event impacted a small portion of a single Availability Zone (โAZโ) in our Tokyo Region. The impact was to the Amazon EC2 and Amazon EBS resources in that AZ, though some other services (such as RDS, Redshift, ElastiCache, and Workspaces) would have seen some impact in that AZ if their underlying EC2 instances were affected. As we have further investigated this event with our customers, we have discovered a few isolated cases where customers' applications running across multiple Availability Zones saw unexpected impact (i.e. some customers using Application Load Balancer in combination with AWS Web Application Firewall or sticky sessions, saw a higher than expected percent of requests return an Internal Server Error). We are sharing additional details on these isolated issues directly with impacted customers.
Summary of the Amazon EC2 and Amazon EBS Service Event in the Tokyo (AP-NORTHEAST-1) Region
Weโd like to give you some additional information about the service disruption that occurred in the Tokyo (AP-NORTHEAST-1) Region on August 23, 2019. Beginning at 12:36 PM JST, a small percentage of EC2 servers in a single Availability Zone in the Tokyo (AP-NORTHEAST-1) Region shut down due to overheating. This resulted in impaired EC2 instances and degraded EBS volume performance for some resources in the affected area of the Availability Zone. The overheating was due to a control system failure that caused multiple, redundant cooling systems to fail in parts of the affected Availability Zone. The affected cooling systems were restored at 3:21 PM JST and temperatures in the affected areas began to return to normal. As temperatures returned to normal, power was restored to the affected instances. By 6:30 PM JST, the vast majority of affected instances and volumes had recovered. A small number of instances and volumes were hosted on hardware which was adversely affected by the loss of power and excessive heat. It took longer to recover these instances and volumes and some needed to be retired as a result of failures to the underlying hardware.
In addition to the impact to affected instances and EBS volumes, there was some impact to the EC2 RunInstances API. At 1:21 PM JST, attempts to launch new EC2 instances targeting the impacted Availability Zone and attempts to use the โidempotency tokenโ (a feature which allows customers to retry run instance commands without risking multiple resulting instance launches) with the RunInstances API in the region began to experience error rates. Other EC2 APIs and launches that did not include an โidempotency token,โ continued to operate normally. This issue also prevented new launches from Auto Scaling which depends on the โidempotency tokenโ. At 2:51 PM JST, engineers resolved the issue affecting the โidempotency tokenโ and Auto Scaling. Launches of new EC2 instances in the affected Availability Zone continued to fail until 4:05 PM JST, when the EC2 control plane subsystem had been restored in the impacted Availability Zone. Attempts to create new snapshots for affected EBS volumes, also experienced increased error rates during the event.
This event was caused by a failure of our datacenter control system, which is used to control and optimize the various cooling systems used in our datacenters. The control system runs on multiple hosts for high availability. This control system contains third-party code which allows it to communicate with third-party devices such as fans, chillers, and temperature sensors. It communicates either directly or through embedded Programmable Logic Controllers (PLC) which in turn communicate with the actual devices. Just prior to the event, the datacenter control system was in the process of failing away from one of the control hosts. During this kind of failover, the control system has to exchange information with other control systems and the datacenter equipment it controls (e.g., the cooling equipment and temperature sensors throughout the datacenter) to ensure that the new control host has the most up-to-date information about the state of the datacenter. Due to a bug in the third-party control system logic, this exchange resulted in excessive interactions between the control system and the devices in the datacenter which ultimately resulted in the control system becoming unresponsive. Our datacenters are designed such that if the datacenter control system fails, the cooling systems go into maximum cooling mode until the control system functionality is restored. While this worked correctly in most of the datacenter, in a small portion of the datacenter, the cooling system did not correctly transition to this safe cooling configuration and instead shut down. As an added safeguard, our datacenter operators have the ability to bypass the datacenter control systems and put our cooling system in โpurgeโ mode to quickly exhaust hot air in the event of a malfunction. The team attempted to activate purge in the affected areas of the datacenter, but this also failed. At this point, temperatures began to rise in the affected part of the datacenter and servers began to power off when they became too hot. Because the datacenter control system was unavailable, the operations team had minimum visibility into the health and state of the datacenter cooling systems. To recover, the team had to manually investigate and reset all of the affected pieces of equipment and put them into a maximum cooling configuration. During this process, it was discovered that the PLCs controlling some of the air handling units were also unresponsive. These controllers needed to be reset. It was the failure of these PLC controllers which prevented the default cooling and โpurgeโ mode from correctly working. After these controllers were reset, cooling was restored to the affected area of the datacenter and temperatures began to decrease.
We are still working with our third-party vendors to understand the bug, and subsequent interactions, that caused both the control system and the impacted PLCs to become unresponsive. In the interim, we have disabled the failover mode that triggered this bug on our control systems to ensure we do not have a recurrence of this issue. We have also trained our local operations teams to quickly identify and remediate this situation if it were to recur, and we are confident that we could reset the system before seeing any customer impact if a similar situation was to occur for any reason. Finally, we are working to modify the way that we control the impacted air handling units to ensure that โpurge modeโ is able to bypass the PLC controllers completely. This is an approach we have begun using in our newest datacenter designs and will make us even more confident that โpurge modeโ will work even if PLCs become unresponsive.
During this event, EC2 instances and EBS volumes in other Availability Zones in the region were not affected. Customers that were running their applications thoroughly across multiple Availability Zones were able to maintain availability throughout the event. For customers that need the highest availability for their applications, we continue to recommend running applications with this multiple Availability Zone architecture; any application component that can create availability issues for customers should run in this fault tolerant way.
We apologize for any inconvenience this event may have caused. We know how critical our services are to our customersโ businesses. We are never satisfied with operational performance that is anything less than perfect, and we will do everything we can to learn from this event and drive improvement across our services.
Weโd like to give you some additional information about the service disruption that occurred in the Tokyo (AP-NORTHEAST-1) Region on August 23, 2019. Beginning at 12:36 PM JST, a small percentage of EC2 servers in a single Availability Zone in the Tokyo (AP-NORTHEAST-1) Region shut down due to overheating. This resulted in impaired EC2 instances and degraded EBS volume performance for some resources in the affected area of the Availability Zone. The overheating was due to a control system failure that caused multiple, redundant cooling systems to fail in parts of the affected Availability Zone. The affected cooling systems were restored at 3:21 PM JST and temperatures in the affected areas began to return to normal. As temperatures returned to normal, power was restored to the affected instances. By 6:30 PM JST, the vast majority of affected instances and volumes had recovered. A small number of instances and volumes were hosted on hardware which was adversely affected by the loss of power and excessive heat. It took longer to recover these instances and volumes and some needed to be retired as a result of failures to the underlying hardware.
In addition to the impact to affected instances and EBS volumes, there was some impact to the EC2 RunInstances API. At 1:21 PM JST, attempts to launch new EC2 instances targeting the impacted Availability Zone and attempts to use the โidempotency tokenโ (a feature which allows customers to retry run instance commands without risking multiple resulting instance launches) with the RunInstances API in the region began to experience error rates. Other EC2 APIs and launches that did not include an โidempotency token,โ continued to operate normally. This issue also prevented new launches from Auto Scaling which depends on the โidempotency tokenโ. At 2:51 PM JST, engineers resolved the issue affecting the โidempotency tokenโ and Auto Scaling. Launches of new EC2 instances in the affected Availability Zone continued to fail until 4:05 PM JST, when the EC2 control plane subsystem had been restored in the impacted Availability Zone. Attempts to create new snapshots for affected EBS volumes, also experienced increased error rates during the event.
This event was caused by a failure of our datacenter control system, which is used to control and optimize the various cooling systems used in our datacenters. The control system runs on multiple hosts for high availability. This control system contains third-party code which allows it to communicate with third-party devices such as fans, chillers, and temperature sensors. It communicates either directly or through embedded Programmable Logic Controllers (PLC) which in turn communicate with the actual devices. Just prior to the event, the datacenter control system was in the process of failing away from one of the control hosts. During this kind of failover, the control system has to exchange information with other control systems and the datacenter equipment it controls (e.g., the cooling equipment and temperature sensors throughout the datacenter) to ensure that the new control host has the most up-to-date information about the state of the datacenter. Due to a bug in the third-party control system logic, this exchange resulted in excessive interactions between the control system and the devices in the datacenter which ultimately resulted in the control system becoming unresponsive. Our datacenters are designed such that if the datacenter control system fails, the cooling systems go into maximum cooling mode until the control system functionality is restored. While this worked correctly in most of the datacenter, in a small portion of the datacenter, the cooling system did not correctly transition to this safe cooling configuration and instead shut down. As an added safeguard, our datacenter operators have the ability to bypass the datacenter control systems and put our cooling system in โpurgeโ mode to quickly exhaust hot air in the event of a malfunction. The team attempted to activate purge in the affected areas of the datacenter, but this also failed. At this point, temperatures began to rise in the affected part of the datacenter and servers began to power off when they became too hot. Because the datacenter control system was unavailable, the operations team had minimum visibility into the health and state of the datacenter cooling systems. To recover, the team had to manually investigate and reset all of the affected pieces of equipment and put them into a maximum cooling configuration. During this process, it was discovered that the PLCs controlling some of the air handling units were also unresponsive. These controllers needed to be reset. It was the failure of these PLC controllers which prevented the default cooling and โpurgeโ mode from correctly working. After these controllers were reset, cooling was restored to the affected area of the datacenter and temperatures began to decrease.
We are still working with our third-party vendors to understand the bug, and subsequent interactions, that caused both the control system and the impacted PLCs to become unresponsive. In the interim, we have disabled the failover mode that triggered this bug on our control systems to ensure we do not have a recurrence of this issue. We have also trained our local operations teams to quickly identify and remediate this situation if it were to recur, and we are confident that we could reset the system before seeing any customer impact if a similar situation was to occur for any reason. Finally, we are working to modify the way that we control the impacted air handling units to ensure that โpurge modeโ is able to bypass the PLC controllers completely. This is an approach we have begun using in our newest datacenter designs and will make us even more confident that โpurge modeโ will work even if PLCs become unresponsive.
During this event, EC2 instances and EBS volumes in other Availability Zones in the region were not affected. Customers that were running their applications thoroughly across multiple Availability Zones were able to maintain availability throughout the event. For customers that need the highest availability for their applications, we continue to recommend running applications with this multiple Availability Zone architecture; any application component that can create availability issues for customers should run in this fault tolerant way.
We apologize for any inconvenience this event may have caused. We know how critical our services are to our customersโ businesses. We are never satisfied with operational performance that is anything less than perfect, and we will do everything we can to learn from this event and drive improvement across our services.
2019 ๅนด 8 ๆ 28 ๆฅ (ไธญๅฝๆ ๅๆถ้ด) ๆดๆฐ:
ๅจๆไปฌไธๅผๅง็ๆป็ปไธญๆๅฐ๏ผ่ฟๆฌกไบไปถๅฝฑๅไบไธไบฌๅบไธญไธไธชๅฏ็จๅบ๏ผโAZโ๏ผ้็ไธๅฐ้จๅใ่ขซๅฝฑๅๅฐ็ๆAmazon EC2ๅEBS่ตๆบ๏ผไธไบไฝฟ็จๅฐๅๆEC2่ตๆบไฝไธบๅบๅฑ็กฌไปถ็ๅ ถๅฎๆๅก(ๆฏๅฆRDS,Redshift, ElastiCache ไปฅๅ Workspaces)ไบฆๅๅฐไบๅฝฑๅใๅจๆไปฌ่ฟไธๆญฅๅๅฎขๆท่ฐๆฅ่ฟไธชไบไปถ็ๆถๅ๏ผๆไปฌไน็ๅฐไบไธไบๅฐๆฐ็ไพๅญ๏ผๅฎขๆทๅจ็จๅคไธชๅฏ็จๅบ็ๆถๅไนๅๅฐไบไธๅฎ็ๅฝฑๅ๏ผๆฏๅฆไธไบๅฎขๆทๅจๅๆถไฝฟ็จApplication Load Balancer๏ผไปฅๅAWS Web Application Firewallๆ่ ็ฒๆงไผ่ฏๆถ๏ผ้ๅฐไบๆฏ้ขๆๆฏไพ้้ซ็ๅ ้จๆๅกๅจ้่ฏฏ๏ผใๆไปฌไผ็ดๆฅๅ่ขซ่ฟไบๅฐๆฐ้ฎ้ขๅฝฑๅ็ๅฎขๆท็ดๆฅๅไบซๆดๅค่ฏฆ็ป็ไฟกๆฏใ
2019 ๅนด 8 ๆ 28 ๆฅ (ไธญๅฝๆ ๅๆถ้ด) ๆดๆฐ:
ๅจๆไปฌไธๅผๅง็ๆป็ปไธญๆๅฐ๏ผ่ฟๆฌกไบไปถๅฝฑๅไบไธไบฌๅบไธญไธไธชๅฏ็จๅบ๏ผโAZโ๏ผ้็ไธๅฐ้จๅใ่ขซๅฝฑๅๅฐ็ๆAmazon EC2ๅEBS่ตๆบ๏ผไธไบไฝฟ็จๅฐๅๆEC2่ตๆบไฝไธบๅบๅฑ็กฌไปถ็ๅ ถๅฎๆๅก(ๆฏๅฆRDS,Redshift, ElastiCache ไปฅๅ Workspaces)ไบฆๅๅฐไบๅฝฑๅใๅจๆไปฌ่ฟไธๆญฅๅๅฎขๆท่ฐๆฅ่ฟไธชไบไปถ็ๆถๅ๏ผๆไปฌไน็ๅฐไบไธไบๅฐๆฐ็ไพๅญ๏ผๅฎขๆทๅจ็จๅคไธชๅฏ็จๅบ็ๆถๅไนๅๅฐไบไธๅฎ็ๅฝฑๅ๏ผๆฏๅฆไธไบๅฎขๆทๅจๅๆถไฝฟ็จApplication Load Balancer๏ผไปฅๅAWS Web Application Firewallๆ่ ็ฒๆงไผ่ฏๆถ๏ผ้ๅฐไบๆฏ้ขๆๆฏไพ้้ซ็ๅ ้จๆๅกๅจ้่ฏฏ๏ผใๆไปฌไผ็ดๆฅๅ่ขซ่ฟไบๅฐๆฐ้ฎ้ขๅฝฑๅ็ๅฎขๆท็ดๆฅๅไบซๆดๅค่ฏฆ็ป็ไฟกๆฏใ
ๅ ณไบ Amazon EC2 ไปฅๅ Amazon EBS ๅจไธไบฌๅบๅ (AP-NORTHEAST-1) ็ๆๅกไบไปถ็่ฏดๆ
้ๅฏนๅจไธไบฌๅบๅ (AP-NORTHEAST-1) ็ๆๅกไธญๆญไบไปถ๏ผๆไปฌๅจ่ฟ้ๆไพๆดๅคไฟกๆฏใไป 2019 ๅนด 8 ๆ 23 ๆฅ 11:36 AM CST (ไธญๅฝๆ ๅๆถ้ด)ๅผๅง๏ผไธๅฐ้จๅ็ EC2 ๆๅกๅจๅจไธไบฌ (AP-NORTHEAST-1) ๅบๅไธญๅไธๅฏ็จๅบ (Availability Zone) ็ฑไบๆๅกๅจ่ฟ็ญ้ ๆๅๆบใ่ฟๅฏผ่ดๅจ่ฏฅๅฏ็จๅบไธญๅๅฐๅฝฑๅ็ EC2 ๅฎไพไธ EBS ๅทๆ่ฝ้ไฝใ้ ๆๆๅกๅจ่ฟ็ญ็ๅๅ ๆฏๆงๅถ็ณป็ปๆ ้๏ผ้ ๆๅๅฝฑๅ็ๅฏ็จๅบ็้จๅๅทๅด็ณป็ปๅคฑๆใๅๅฐๅฝฑๅ็ๅทๅด็ณป็ปๅทฒ็ปๅจ 2:21 PM CST (ไธญๅฝๆ ๅๆถ้ด)ไฟฎๅค๏ผๆๅกๅจๆธฉๅบฆไนๆขๅคๅฐๆญฃๅธธ็ถๆใๅจๆธฉๅบฆๆขๅคๆญฃๅธธๅ๏ผEC2 ๅฎไพ็็ตๆบไพๅบไนๅทฒๆขๅคใๅจ 5:30 PM CST (ไธญๅฝๆ ๅๆถ้ด) ๏ผๅคง้จๅๅๅฝฑๅ็ EC2 ๅฎไพไธ EBS ๅท้ฝๆขๅคๆญฃๅธธๅทฅไฝ๏ผไฝไปๆไธๅฐ้จๅ็ๅฎไพไธๅทๅ ไธบ่ฟ็ญไธๆญ็ตๆๆถๆ ๆณไฟฎๅค๏ผๅ ไธบๅบๅฑ็กฌไปถ็ๆ ้๏ผๅ ถไธญๆไบๅฎไพไธๅท้่ฆๆดๅค็ๆถ้ด่ฟ่กไฟฎๅคใ
้คไบ EC2 ๅฎไพไธ EBS ๅทๅๅฐๅฝฑๅๅค๏ผๅจ 12:21 PM CST (ไธญๅฝๆ ๅๆถ้ด) EC2 RunInstances API ไนๅๅฐไบๅฝฑๅใๅจๅๅฝฑๅ็ๅฏ็จๅบไธญ๏ผๅฐ่ฏๅฏๅจๆฐ็ EC2 ๅฎไพๅๅๅฐ่ฏไฝฟ็จ RunInstances API ็ "idempotency token" ๅ่ฝ (ไธไธชๅ
่ฎธ็จๆทๅฏๅจๆฐ็ๅฎไพๆถ้่ฏ่ไธไผไบง็ๅคไฝ็ๅฎไพ็ๅ่ฝ)ๆถ๏ผไนๆๅ็้่ฏฏใๅ
ถไปๆฒกๆ่ฐ็จ "idempotency token"็ API ๅๅฏๆญฃๅธธ่ฟไฝใ่ฟไธชไบไปถไนๅฏผ่ด้่ฟ "idempotency token" ไฝฟ็จ Auto Scaling ๆถ๏ผๆ ๆณๅฏๅจๆฐๅฎไพใๅๅฐๅข้ๅทฒ็ปไบ 1:51 PM CST (ไธญๅฝๆ ๅๆถ้ด) ไฟฎๅคไบ โidempotency tokenโ ไธ Auto Scaling ็ธๅ
ณ็้ฎ้ขใๅนถไธไบ 3:05 PM CST(ไธญๅฝๆ ๅๆถ้ด)ๅจๅๅฝฑๅ็ๅฏ็จๅบไธญ๏ผไฟฎๅคไบEC2 ๆงๅถ้ขๆฟ็ๅญ็ณป็ป๏ผๅผๅฏๆฐๅฎไพ็ๅ่ฝๅทฒ็ปๅฏไปฅๆญฃๅธธๅทฅไฝใไฝๅจๆฌไบไปถไธญๅๅฐๅฝฑๅ็ๅทๆๅปบ็ซ็ๆฐๅฟซ็
ง (Snapshot) ไพๆงๆไธๅฎ็้่ฏฏ็ใ
ๆฌๆฌกไบไปถๆฏ็ฑไบๆฐๆฎไธญๅฟ่ด่ดฃๆงๅถๅไผๅๅทๅด็ๆงๅถ็ณป็ปๆ
้ๆ้ ๆ๏ผ่ฟไธชๆงๅถ็ณป็ปๅจๅคไธชไธปๆบ้ฝๆ้จ็ฝฒไปฅๅฎ็ฐ้ซๅฏ็จๆง๏ผๆฌๆงๅถ็ณป็ปไธญๅ
ๅซไบๅ
่ฎธไธ้ฃๆใๅทๅดๅจๅๆธฉๅบฆไผ ๆๅจ็ญ็กฌไปถ็ปไปถ็ธไบไผ ้ไฟกๅท็็ฌฌไธๆน็็จๅบ๏ผ่ฏฅ็จๅบๅฏไปฅ็ดๆฅๆ้่ฟ Programmable Logic Controllers (PLC) ๆฅไธๅฎ้
็็กฌไปถ็ปไปถๆฒ้ใๅจ่ฟไบไปถๅ็ๅ๏ผๆฐๆฎไธญๅฟ็ๆงๅถ็ณป็ปๆญฃๅจไธบไบๅ
ถไธญไธๅฐๅคฑๆ็ๆงๅถไธปๆบ่ฟ่กๅคไปฝๅค็๏ผๅจๅคไปฝๅค็ไธญ๏ผๆงๅถ็ณป็ป่ฆๅฝผๆญคไบ็ธไบคๆขไฟกๅท (ไพๅฆ๏ผๅทๅด่ฃ
็ฝฎไธๆธฉๅบฆไผ ๆๅจไบคๆขไฟกๅท)ไปฅไฟๆๆๆฐ็ไฟกๆฏใ็ฑไบ่ฏฅ็ฌฌไธๆน็จๅบไธญ็ไธไธช้่ฏฏ๏ผๅฏผ่ดๆงๅถ็ณป็ปไธ็ปไปถ่ฟๅบฆ็่ฟ่กไฟกๆฏไบคๆข่้ ๆๆงๅถ็ณป็ปๆ ๆณๅๅบใๆไปฌ็ๆฐๆฎไธญๅฟ่ขซ่ฎพ่ฎกๆไธๆฆๆงๅถ็ณป็ปๅ็้่ฏฏ๏ผๅทๅด็ณป็ปๅฐฑไผ่ชๅจ่ฟๅ
ฅๆๅท็ๆจกๅผ๏ผ็ดๅฐๆงๅถ็ณป็ปๆขๅคๆญฃๅธธไธบๆญข๏ผ่ฟๆ ท็่ฎพ่ฎกๅฏนไบๆไปฌๅคง้จๅ็ๆฐๆฎไธญๅฟ้ฝๆฏๆๆ็๏ผไฝๆไธๅฐ้จๅ็ๆฐๆฎไธญๅฟ๏ผ็ฑไบๅทๅด็ณป็ปๆ ๆณๆญฃ็กฎ่ฟๅ
ฅๅฎๅ
จ้ๆธฉๆจกๅผ๏ผ่้ ๆ็ณป็ปๅ
ณๆบใๆไปฌ็ๆฐๆฎไธญๅฟๅ ๅ
ฅไบๅฎๅ
จ้ฒๆค่ฎพ่ฎก๏ผๅจๆงๅถ็ณป็ปๆ
้ๆถ๏ผๅฏไปฅ็ฅ่ฟๆงๅถ็ณป็ป๏ผ็ดๆฅ่ฟๅ
ฅๅ็ฉบๆจกๅผๅฐๆฐๆฎไธญๅฟไธญ็็ญ็ฉบๆฐ่ฟ
้ๆๅบ๏ผไฝๆงๅถไธญๅฟ็ๅข้ๅจๅฏๅจๅ็ฉบๆจกๅผๆถๅ็ไบๆ
้๏ผๆไปฅๆฐๆฎไธญๅฟ็ๆธฉๅบฆๆไผๆ็ปญๆๅ๏ผ่ๆๅกๅจๅจๅฐ่พพๆธฉๅบฆไธ้ๅไนๅผๅง่ชๅจๅ
ณๆบไบใ็ฑไบๆฐๆฎไธญๅฟ็ๆงๅถ็ณป็ปๆ
้๏ผ็ปด่ฟๅข้ๆ ๆณๅพ็ฅๆฐๆฎไธญๅฟๅทๅด็ณป็ป็ๅณๆถไฟกๆฏ๏ผๅจ่ฟ่กๆ
้ๆ้คๆถ๏ผๅข้ๅฟ
้กป่ฆๅฏนๆๆ็ปไปถ่ฟ่ก้ไธ็ไบบๅทฅๆฃๆฅ๏ผๆ่ฝ่ฎฉๆงๅถ็ณป็ป่ฟๅ
ฅๆๅทๆจกๅผ๏ผๅจ่ฟๆ
้ๆ้ค็่ฟ็จไธญ๏ผๅ็ฐๆงๅถ็ฉบ่ฐ็ปไปถ็ PLC ๆงๅถๅจๆ ๆณๅๅบ๏ผๆงๅถๅจ้่ฆ่ฟ่ก้็ฝฎ๏ผๆฏ PLC ๆงๅถๅจ็้่ฏฏ้ ๆไบ้ข่ฎพ็ๅทๅดๆจกๅผไธๅ็ฉบๆจกๅผๆ ๆณๆญฃ็กฎๅจไฝ๏ผๅจ PLC ๆงๅถๅจ่ขซ้็ฝฎไนๅ๏ผ่ฏฅๅฏ็จๅบๆฐๆฎไธญๅฟ็ๅทๅด็ณป็ปๅฐฑๅฏไปฅๆญฃๅธธๅทฅไฝไบ๏ผ่ๆฐๆฎไธญๅฟ็่ฟ้ซ็ๆธฉๅบฆไนๅผๅงๆ
ขๆ
ข้ไฝใ
ๆไปฌไปๅจไธ็ฌฌไธๆนไพๅบๅๅไฝไปฅไบ่งฃๅฏผ่ดๆงๅถ็ณป็ปๅๅๅฝฑๅ็ PLC ๆ ๅๅบ็้่ฏฏๅๅ็ปญไบคไบใ ๅจๆญคๆ้ด๏ผๆไปฌๅทฒ็ฆ็จๅจๆไปฌ็ๆงๅถ็ณป็ปไธ่งฆๅๆญค้่ฏฏ็ๆ ้่ฝฌ็งปๆจกๅผ๏ผไปฅ็กฎไฟๆไปฌไธไผๅๆฌกๅบ็ฐๆญค้ฎ้ขใ ๆไปฌ่ฟๅน่ฎญไบๆไปฌ็ๆฌๅฐ่ฟ่ฅๅข้๏ผไปฅไพฟๅจๅ็่ฟ็งๆ ๅตๆถๅฟซ้่ฏๅซๅไฟฎๅค่ฟ็งๆ ๅต๏ผๅนถไธๆไปฌ็ธไฟก๏ผๅฆๆๅๆฌกๅ็็ฑปไผผๆ ๅต๏ผๆ ่ฎบไปไนๅๅ ๏ผๆไปฌๅฏไปฅๅจๅฎขๆทๅๅฝฑๅไนๅ้็ฝฎ็ณป็ปใ ๆๅ๏ผๆไปฌๆญฃๅจๅชๅไฟฎๆนๆไปฌๆงๅถๅๅฝฑๅ็็ฉบๆฐๅค็ๅๅ ็ๆนๅผ๏ผไปฅ็กฎไฟโๆธ ้คๆจกๅผโ่ฝๅคๅฎๅ จ็ป่ฟPLCๆงๅถๅจใ ่ฟๆฏๆไปฌๅจๆๆฐ็ๆฐๆฎไธญๅฟ่ฎพ่ฎกไธญๅผๅงไฝฟ็จ็ไธ็งๆนๆณ๏ผๅณไฝฟ PLC ๆ ๅๅบ๏ผๆไปฌไนไผๆดๅ ็กฎไฟกโๆธ ้คๆจกๅผโๅฐ่ตทไฝ็จใ
ๅจ่ฟๆฌกไบไปถไธญ๏ผEC2 ๅฎไพไปฅๅ EBS ๅจๅญๅจๅไธๅบๅ็ๅ ถๅฎ็ๅฏ็จๅบๆฒกๆๅๅฐๅฝฑๅใๅๆถๅจๅคไธชๅฏ็จๅบไธๅ ๅๆง่กไปไปฌ็ๅบ็จ็จๅบ็ๅฎขๆท๏ผๅจ่ฟๆฌก็ไบไปถไธญไพ็ถๅฏไปฅ็ปดๆๆๅกๅฏ็จใๅฏนไบ้่ฆ็ปๅฏน้ซๅฏ็จ็ๅฎขๆท๏ผๆไปฌๆ็ปญๅปบ่ฎฎๆจไฝฟ็จ้ซๅฏ็จๆง็ๆถๆ่ฎพ่ฎกใไปปไฝไธๅบ็จ็จๅบ็ธๅ ณ็ๅ ไปถ้ฝๅบ่ฏฅ้็จ่ฟ็งๅฎน้่ฎพ่ฎกใ
้ๅฏน่ฟๆฌกไบไปถ้ ๆ็ไธไพฟ๏ผๆไปฌๆๅฐๅๅๆฑๆญใๆไปฌ็่งฃๅฏนไบๆไปฌ็็จๆท็ไธๅกๆฅ่ฏด๏ผ็จณๅฎ็ๆๅกๆๅคไน่ณๅ
ณ้่ฆใๆไปฌไนไปๆชๆปก่ถณๆผๆไปฌๆๆไพ็ๅๅบ้ๅบฆไปฅๅๆๅกๅ่ดจใๅฏนไบ่ฟๆฌกไบไปถ๏ผๆไปฌๅฐไผๅฐฝไธๅๆ่ฝไปๆญคๆฌกไบไปถไธญๅญฆไน ๅนถไธ็ปง็ปญไธๆญๆนๅๆไปฌ็ๆๅกใ
้ๅฏนๅจไธไบฌๅบๅ (AP-NORTHEAST-1) ็ๆๅกไธญๆญไบไปถ๏ผๆไปฌๅจ่ฟ้ๆไพๆดๅคไฟกๆฏใไป 2019 ๅนด 8 ๆ 23 ๆฅ 11:36 AM CST (ไธญๅฝๆ ๅๆถ้ด)ๅผๅง๏ผไธๅฐ้จๅ็ EC2 ๆๅกๅจๅจไธไบฌ (AP-NORTHEAST-1) ๅบๅไธญๅไธๅฏ็จๅบ (Availability Zone) ็ฑไบๆๅกๅจ่ฟ็ญ้ ๆๅๆบใ่ฟๅฏผ่ดๅจ่ฏฅๅฏ็จๅบไธญๅๅฐๅฝฑๅ็ EC2 ๅฎไพไธ EBS ๅทๆ่ฝ้ไฝใ้ ๆๆๅกๅจ่ฟ็ญ็ๅๅ ๆฏๆงๅถ็ณป็ปๆ ้๏ผ้ ๆๅๅฝฑๅ็ๅฏ็จๅบ็้จๅๅทๅด็ณป็ปๅคฑๆใๅๅฐๅฝฑๅ็ๅทๅด็ณป็ปๅทฒ็ปๅจ 2:21 PM CST (ไธญๅฝๆ ๅๆถ้ด)ไฟฎๅค๏ผๆๅกๅจๆธฉๅบฆไนๆขๅคๅฐๆญฃๅธธ็ถๆใๅจๆธฉๅบฆๆขๅคๆญฃๅธธๅ๏ผEC2 ๅฎไพ็็ตๆบไพๅบไนๅทฒๆขๅคใๅจ 5:30 PM CST (ไธญๅฝๆ ๅๆถ้ด) ๏ผๅคง้จๅๅๅฝฑๅ็ EC2 ๅฎไพไธ EBS ๅท้ฝๆขๅคๆญฃๅธธๅทฅไฝ๏ผไฝไปๆไธๅฐ้จๅ็ๅฎไพไธๅทๅ ไธบ่ฟ็ญไธๆญ็ตๆๆถๆ ๆณไฟฎๅค๏ผๅ ไธบๅบๅฑ็กฌไปถ็ๆ ้๏ผๅ ถไธญๆไบๅฎไพไธๅท้่ฆๆดๅค็ๆถ้ด่ฟ่กไฟฎๅคใ
้คไบ EC2 ๅฎไพไธ EBS ๅทๅๅฐๅฝฑๅๅค๏ผๅจ 12:21 PM CST (ไธญๅฝๆ ๅๆถ้ด) EC2 RunInstances API ไนๅๅฐไบๅฝฑๅใๅจๅๅฝฑๅ็ๅฏ็จๅบไธญ๏ผๅฐ่ฏๅฏๅจๆฐ็ EC2 ๅฎไพๅๅๅฐ่ฏไฝฟ็จ RunInstances API ็ "idempotency token" ๅ่ฝ (ไธไธชๅ
่ฎธ็จๆทๅฏๅจๆฐ็ๅฎไพๆถ้่ฏ่ไธไผไบง็ๅคไฝ็ๅฎไพ็ๅ่ฝ)ๆถ๏ผไนๆๅ็้่ฏฏใๅ
ถไปๆฒกๆ่ฐ็จ "idempotency token"็ API ๅๅฏๆญฃๅธธ่ฟไฝใ่ฟไธชไบไปถไนๅฏผ่ด้่ฟ "idempotency token" ไฝฟ็จ Auto Scaling ๆถ๏ผๆ ๆณๅฏๅจๆฐๅฎไพใๅๅฐๅข้ๅทฒ็ปไบ 1:51 PM CST (ไธญๅฝๆ ๅๆถ้ด) ไฟฎๅคไบ โidempotency tokenโ ไธ Auto Scaling ็ธๅ
ณ็้ฎ้ขใๅนถไธไบ 3:05 PM CST(ไธญๅฝๆ ๅๆถ้ด)ๅจๅๅฝฑๅ็ๅฏ็จๅบไธญ๏ผไฟฎๅคไบEC2 ๆงๅถ้ขๆฟ็ๅญ็ณป็ป๏ผๅผๅฏๆฐๅฎไพ็ๅ่ฝๅทฒ็ปๅฏไปฅๆญฃๅธธๅทฅไฝใไฝๅจๆฌไบไปถไธญๅๅฐๅฝฑๅ็ๅทๆๅปบ็ซ็ๆฐๅฟซ็
ง (Snapshot) ไพๆงๆไธๅฎ็้่ฏฏ็ใ
ๆฌๆฌกไบไปถๆฏ็ฑไบๆฐๆฎไธญๅฟ่ด่ดฃๆงๅถๅไผๅๅทๅด็ๆงๅถ็ณป็ปๆ
้ๆ้ ๆ๏ผ่ฟไธชๆงๅถ็ณป็ปๅจๅคไธชไธปๆบ้ฝๆ้จ็ฝฒไปฅๅฎ็ฐ้ซๅฏ็จๆง๏ผๆฌๆงๅถ็ณป็ปไธญๅ
ๅซไบๅ
่ฎธไธ้ฃๆใๅทๅดๅจๅๆธฉๅบฆไผ ๆๅจ็ญ็กฌไปถ็ปไปถ็ธไบไผ ้ไฟกๅท็็ฌฌไธๆน็็จๅบ๏ผ่ฏฅ็จๅบๅฏไปฅ็ดๆฅๆ้่ฟ Programmable Logic Controllers (PLC) ๆฅไธๅฎ้
็็กฌไปถ็ปไปถๆฒ้ใๅจ่ฟไบไปถๅ็ๅ๏ผๆฐๆฎไธญๅฟ็ๆงๅถ็ณป็ปๆญฃๅจไธบไบๅ
ถไธญไธๅฐๅคฑๆ็ๆงๅถไธปๆบ่ฟ่กๅคไปฝๅค็๏ผๅจๅคไปฝๅค็ไธญ๏ผๆงๅถ็ณป็ป่ฆๅฝผๆญคไบ็ธไบคๆขไฟกๅท (ไพๅฆ๏ผๅทๅด่ฃ
็ฝฎไธๆธฉๅบฆไผ ๆๅจไบคๆขไฟกๅท)ไปฅไฟๆๆๆฐ็ไฟกๆฏใ็ฑไบ่ฏฅ็ฌฌไธๆน็จๅบไธญ็ไธไธช้่ฏฏ๏ผๅฏผ่ดๆงๅถ็ณป็ปไธ็ปไปถ่ฟๅบฆ็่ฟ่กไฟกๆฏไบคๆข่้ ๆๆงๅถ็ณป็ปๆ ๆณๅๅบใๆไปฌ็ๆฐๆฎไธญๅฟ่ขซ่ฎพ่ฎกๆไธๆฆๆงๅถ็ณป็ปๅ็้่ฏฏ๏ผๅทๅด็ณป็ปๅฐฑไผ่ชๅจ่ฟๅ
ฅๆๅท็ๆจกๅผ๏ผ็ดๅฐๆงๅถ็ณป็ปๆขๅคๆญฃๅธธไธบๆญข๏ผ่ฟๆ ท็่ฎพ่ฎกๅฏนไบๆไปฌๅคง้จๅ็ๆฐๆฎไธญๅฟ้ฝๆฏๆๆ็๏ผไฝๆไธๅฐ้จๅ็ๆฐๆฎไธญๅฟ๏ผ็ฑไบๅทๅด็ณป็ปๆ ๆณๆญฃ็กฎ่ฟๅ
ฅๅฎๅ
จ้ๆธฉๆจกๅผ๏ผ่้ ๆ็ณป็ปๅ
ณๆบใๆไปฌ็ๆฐๆฎไธญๅฟๅ ๅ
ฅไบๅฎๅ
จ้ฒๆค่ฎพ่ฎก๏ผๅจๆงๅถ็ณป็ปๆ
้ๆถ๏ผๅฏไปฅ็ฅ่ฟๆงๅถ็ณป็ป๏ผ็ดๆฅ่ฟๅ
ฅๅ็ฉบๆจกๅผๅฐๆฐๆฎไธญๅฟไธญ็็ญ็ฉบๆฐ่ฟ
้ๆๅบ๏ผไฝๆงๅถไธญๅฟ็ๅข้ๅจๅฏๅจๅ็ฉบๆจกๅผๆถๅ็ไบๆ
้๏ผๆไปฅๆฐๆฎไธญๅฟ็ๆธฉๅบฆๆไผๆ็ปญๆๅ๏ผ่ๆๅกๅจๅจๅฐ่พพๆธฉๅบฆไธ้ๅไนๅผๅง่ชๅจๅ
ณๆบไบใ็ฑไบๆฐๆฎไธญๅฟ็ๆงๅถ็ณป็ปๆ
้๏ผ็ปด่ฟๅข้ๆ ๆณๅพ็ฅๆฐๆฎไธญๅฟๅทๅด็ณป็ป็ๅณๆถไฟกๆฏ๏ผๅจ่ฟ่กๆ
้ๆ้คๆถ๏ผๅข้ๅฟ
้กป่ฆๅฏนๆๆ็ปไปถ่ฟ่ก้ไธ็ไบบๅทฅๆฃๆฅ๏ผๆ่ฝ่ฎฉๆงๅถ็ณป็ป่ฟๅ
ฅๆๅทๆจกๅผ๏ผๅจ่ฟๆ
้ๆ้ค็่ฟ็จไธญ๏ผๅ็ฐๆงๅถ็ฉบ่ฐ็ปไปถ็ PLC ๆงๅถๅจๆ ๆณๅๅบ๏ผๆงๅถๅจ้่ฆ่ฟ่ก้็ฝฎ๏ผๆฏ PLC ๆงๅถๅจ็้่ฏฏ้ ๆไบ้ข่ฎพ็ๅทๅดๆจกๅผไธๅ็ฉบๆจกๅผๆ ๆณๆญฃ็กฎๅจไฝ๏ผๅจ PLC ๆงๅถๅจ่ขซ้็ฝฎไนๅ๏ผ่ฏฅๅฏ็จๅบๆฐๆฎไธญๅฟ็ๅทๅด็ณป็ปๅฐฑๅฏไปฅๆญฃๅธธๅทฅไฝไบ๏ผ่ๆฐๆฎไธญๅฟ็่ฟ้ซ็ๆธฉๅบฆไนๅผๅงๆ
ขๆ
ข้ไฝใ
ๆไปฌไปๅจไธ็ฌฌไธๆนไพๅบๅๅไฝไปฅไบ่งฃๅฏผ่ดๆงๅถ็ณป็ปๅๅๅฝฑๅ็ PLC ๆ ๅๅบ็้่ฏฏๅๅ็ปญไบคไบใ ๅจๆญคๆ้ด๏ผๆไปฌๅทฒ็ฆ็จๅจๆไปฌ็ๆงๅถ็ณป็ปไธ่งฆๅๆญค้่ฏฏ็ๆ ้่ฝฌ็งปๆจกๅผ๏ผไปฅ็กฎไฟๆไปฌไธไผๅๆฌกๅบ็ฐๆญค้ฎ้ขใ ๆไปฌ่ฟๅน่ฎญไบๆไปฌ็ๆฌๅฐ่ฟ่ฅๅข้๏ผไปฅไพฟๅจๅ็่ฟ็งๆ ๅตๆถๅฟซ้่ฏๅซๅไฟฎๅค่ฟ็งๆ ๅต๏ผๅนถไธๆไปฌ็ธไฟก๏ผๅฆๆๅๆฌกๅ็็ฑปไผผๆ ๅต๏ผๆ ่ฎบไปไนๅๅ ๏ผๆไปฌๅฏไปฅๅจๅฎขๆทๅๅฝฑๅไนๅ้็ฝฎ็ณป็ปใ ๆๅ๏ผๆไปฌๆญฃๅจๅชๅไฟฎๆนๆไปฌๆงๅถๅๅฝฑๅ็็ฉบๆฐๅค็ๅๅ ็ๆนๅผ๏ผไปฅ็กฎไฟโๆธ ้คๆจกๅผโ่ฝๅคๅฎๅ จ็ป่ฟPLCๆงๅถๅจใ ่ฟๆฏๆไปฌๅจๆๆฐ็ๆฐๆฎไธญๅฟ่ฎพ่ฎกไธญๅผๅงไฝฟ็จ็ไธ็งๆนๆณ๏ผๅณไฝฟ PLC ๆ ๅๅบ๏ผๆไปฌไนไผๆดๅ ็กฎไฟกโๆธ ้คๆจกๅผโๅฐ่ตทไฝ็จใ
ๅจ่ฟๆฌกไบไปถไธญ๏ผEC2 ๅฎไพไปฅๅ EBS ๅจๅญๅจๅไธๅบๅ็ๅ ถๅฎ็ๅฏ็จๅบๆฒกๆๅๅฐๅฝฑๅใๅๆถๅจๅคไธชๅฏ็จๅบไธๅ ๅๆง่กไปไปฌ็ๅบ็จ็จๅบ็ๅฎขๆท๏ผๅจ่ฟๆฌก็ไบไปถไธญไพ็ถๅฏไปฅ็ปดๆๆๅกๅฏ็จใๅฏนไบ้่ฆ็ปๅฏน้ซๅฏ็จ็ๅฎขๆท๏ผๆไปฌๆ็ปญๅปบ่ฎฎๆจไฝฟ็จ้ซๅฏ็จๆง็ๆถๆ่ฎพ่ฎกใไปปไฝไธๅบ็จ็จๅบ็ธๅ ณ็ๅ ไปถ้ฝๅบ่ฏฅ้็จ่ฟ็งๅฎน้่ฎพ่ฎกใ
้ๅฏน่ฟๆฌกไบไปถ้ ๆ็ไธไพฟ๏ผๆไปฌๆๅฐๅๅๆฑๆญใๆไปฌ็่งฃๅฏนไบๆไปฌ็็จๆท็ไธๅกๆฅ่ฏด๏ผ็จณๅฎ็ๆๅกๆๅคไน่ณๅ
ณ้่ฆใๆไปฌไนไปๆชๆปก่ถณๆผๆไปฌๆๆไพ็ๅๅบ้ๅบฆไปฅๅๆๅกๅ่ดจใๅฏนไบ่ฟๆฌกไบไปถ๏ผๆไปฌๅฐไผๅฐฝไธๅๆ่ฝไปๆญคๆฌกไบไปถไธญๅญฆไน ๅนถไธ็ปง็ปญไธๆญๆนๅๆไปฌ็ๆๅกใ
2019๋ 8์ 28์ผ ์ ๋ฐ์ดํธ:
์ด๊ธฐ ์์ฝ ๊ธ์์ ์ค๋ช ๋ ๋ฐ์ ๊ฐ์ด, ์ด๋ฒ ์ด๋ฒคํธ๋ก ๋์ฟ ๋ฆฌ์ ๋ด ๋จ์ผ ๊ฐ์ฉ ์์ญ(AZ: Availability Zone)์ ์์ ๋ถ๋ถ์ด ์ํฅ์ ๋ฐ์์ต๋๋ค. ์ด๋ ํด๋น ๊ฐ์ฉ ์์ญ์ Amazon EC2์ Amazon EBS ๋ฆฌ์์ค์ ์ํฅ์ ๋ฏธ์ณค์ต๋๋ค. ๋ค๋ง, ๊ธฐ์ EC2 ์ธ์คํด์ค๊ฐ ์ํฅ์ ๋ฐ์ ๊ฒฝ์ฐ, ํด๋น ๊ฐ์ฉ ์์ญ์ ๋ค๋ฅธ ์๋น์ค(์: RDS, Redshift, ElastiCache, Workspaces)์ ๋ค์ ์ํฅ์ด ์์์ ๊ฒ์ ๋๋ค. ๊ณ ๊ฐ๊ณผ ํจ๊ป ์ด๋ฒ ์ด๋ฒคํธ๋ฅผ ์์ธํ ์กฐ์ฌํ ๊ฒฐ๊ณผ, ์ฌ๋ฌ ๊ฐ์ฉ ์์ญ์์ ์คํ๋๋ ๊ณ ๊ฐ์ ์ ํ๋ฆฌ์ผ์ด์ ์ด ์์์น ๋ชปํ ์ํฅ์ ๋ฐ์ ๋ช ๊ฐ์ง ๋๋ฌธ ์ฌ๋ก(์: AWS ์น ์ ํ๋ฆฌ์ผ์ด์ ๋ฐฉํ๋ฒฝ ๋๋ ๊ณ ์ ์ธ์ ๊ณผ ํจ๊ป ์ ํ๋ฆฌ์ผ์ด์ ๋ก๋ ๋ฐธ๋ฐ์๋ฅผ ์ฌ์ฉํ๋ ์ผ๋ถ ๊ณ ๊ฐ์์ ์์๋ณด๋ค ๋์ ๋น์จ๋ก ๋ด๋ถ ์๋ฒ ์๋ฌ๊ฐ ๋ฐ์)๋ฅผ ๋ฐ๊ฒฌํ์ต๋๋ค. AWS๋ ์ด๋ฌํ ์์ธ์ ์ธ ๋ฌธ์ ์ ๋ํ ์ถ๊ฐ ์ธ๋ถ ์ฌํญ์ ์ํฅ์ ๋ฐ์ ๊ณ ๊ฐ๊ณผ ์ง์ ๊ณต์ ํ๊ณ ์์ต๋๋ค.
2019๋ 8์ 28์ผ ์ ๋ฐ์ดํธ:
์ด๊ธฐ ์์ฝ ๊ธ์์ ์ค๋ช ๋ ๋ฐ์ ๊ฐ์ด, ์ด๋ฒ ์ด๋ฒคํธ๋ก ๋์ฟ ๋ฆฌ์ ๋ด ๋จ์ผ ๊ฐ์ฉ ์์ญ(AZ: Availability Zone)์ ์์ ๋ถ๋ถ์ด ์ํฅ์ ๋ฐ์์ต๋๋ค. ์ด๋ ํด๋น ๊ฐ์ฉ ์์ญ์ Amazon EC2์ Amazon EBS ๋ฆฌ์์ค์ ์ํฅ์ ๋ฏธ์ณค์ต๋๋ค. ๋ค๋ง, ๊ธฐ์ EC2 ์ธ์คํด์ค๊ฐ ์ํฅ์ ๋ฐ์ ๊ฒฝ์ฐ, ํด๋น ๊ฐ์ฉ ์์ญ์ ๋ค๋ฅธ ์๋น์ค(์: RDS, Redshift, ElastiCache, Workspaces)์ ๋ค์ ์ํฅ์ด ์์์ ๊ฒ์ ๋๋ค. ๊ณ ๊ฐ๊ณผ ํจ๊ป ์ด๋ฒ ์ด๋ฒคํธ๋ฅผ ์์ธํ ์กฐ์ฌํ ๊ฒฐ๊ณผ, ์ฌ๋ฌ ๊ฐ์ฉ ์์ญ์์ ์คํ๋๋ ๊ณ ๊ฐ์ ์ ํ๋ฆฌ์ผ์ด์ ์ด ์์์น ๋ชปํ ์ํฅ์ ๋ฐ์ ๋ช ๊ฐ์ง ๋๋ฌธ ์ฌ๋ก(์: AWS ์น ์ ํ๋ฆฌ์ผ์ด์ ๋ฐฉํ๋ฒฝ ๋๋ ๊ณ ์ ์ธ์ ๊ณผ ํจ๊ป ์ ํ๋ฆฌ์ผ์ด์ ๋ก๋ ๋ฐธ๋ฐ์๋ฅผ ์ฌ์ฉํ๋ ์ผ๋ถ ๊ณ ๊ฐ์์ ์์๋ณด๋ค ๋์ ๋น์จ๋ก ๋ด๋ถ ์๋ฒ ์๋ฌ๊ฐ ๋ฐ์)๋ฅผ ๋ฐ๊ฒฌํ์ต๋๋ค. AWS๋ ์ด๋ฌํ ์์ธ์ ์ธ ๋ฌธ์ ์ ๋ํ ์ถ๊ฐ ์ธ๋ถ ์ฌํญ์ ์ํฅ์ ๋ฐ์ ๊ณ ๊ฐ๊ณผ ์ง์ ๊ณต์ ํ๊ณ ์์ต๋๋ค.
๋์ฟ(AP-NORTHEAST-1) ๋ฆฌ์ ์์ ๋ฐ์ํ ์๋ง์กด EC2 ๋ฐ ์๋ง์กด EBS ์๋น์ค ์ด๋ฒคํธ ์์ฝ
2019๋ 8์ 23์ผ ๋์ฟ(AP-NORTHEAST-1) ๋ฆฌ์ ์์ ๋ฐ์ํ ์๋น์ค ์ฅ์ ์ ๊ด๋ จํด ์ถ๊ฐ ์ ๋ณด๋ฅผ ์ ๋ฌ๋๋ฆฝ๋๋ค. ์ผ๋ณธํ์ค์๊ฐ ์คํ 12์ 36๋ถ๋ถํฐ ๋์ฟ(AP-NORTHEAST-1) ๋ฆฌ์ ๋ด ํ ๊ฐ์ฉ์์ญ(AZ: Availability Zone)์ EC2 ์๋ฒ ์ค ์ผ๋ถ๊ฐ ๊ณผ์ด๋ก ์ธํด ๊ฐ๋์ค๋จ ๋์์ต๋๋ค. ๊ทธ ๊ฒฐ๊ณผ EC2 ์ธ์คํด์ค๊ฐ ์์๋๊ณ , ํด๋น ๊ฐ์ฉ์์ญ์ ์ํฅ์ ๋ฐ๋ ์ผ๋ถ ๋ฆฌ์์ค์ EBS ๋ณผ๋ฅจ ์ฑ๋ฅ์ด ์ ํ๋์์ต๋๋ค. ์ด๋ฒ ๊ณผ์ด์ ์ ์ด ์์คํ ์ฅ์ ๋ก ๋ฐ์ํ ๊ฒ์ผ๋ก ์ด๋ก ์ธํด ๋ฌธ์ ๊ฐ ๋ฐ์ํ ๊ฐ์ฉ์์ญ ์ผ๋ถ์์ ๋ค์์ ์ค๋ณต ๋๊ฐ ์์คํ ์ด ์ค์๋์ ์ผ์ผํค๊ฒ ๋์์ต๋๋ค. ํด๋น ๋๊ฐ ์์คํ ์ ์ผ๋ณธํ์ค์๊ฐ ๊ธฐ์ค ์คํ 3์ 21๋ถ์ ๋ณต๊ตฌ๋์์ผ๋ฉฐ, ํด๋น ์์ญ์ ์จ๋๋ ์ ์์ ํ๋ณตํ๊ธฐ ์์ํ์ต๋๋ค. ์จ๋๊ฐ ์ ์ํ๋๋ฉด์, ์ํฅ์ ๋ฐ์ ์ธ์คํด์ค์ ์ ๋ ฅ ๊ณต๊ธ๋ ๋ณต๊ตฌ๋์์ต๋๋ค. ์ผ๋ณธํ์ค์๊ฐ ๊ธฐ์ค ์คํ 6์ 30๋ถ๊น์ง ์ํฅ์ ๋ฐ์ ์ธ์คํด์ค์ ๋ณผ๋ฅจ ๋๋ค์๊ฐ ๋ณต๊ตฌ๋์์ต๋๋ค. ์ ๋ ฅ ์ค๋จ๊ณผ ๊ณผ์ด๋ก ์ธํด ์ํฅ์ ๋ฐ์ ํ๋์จ์ด์ ํธ์คํ ๋์ด ์๋ ์ธ์คํด์ค์ ๋ณผ๋ฅจ์ ์์์์ต๋๋ค. ํด๋น ์ธ์คํด์ค์ ๋ณผ๋ฅจ์ ๋ณต๊ตฌํ๋๋ฐ ๋ณด๋ค ์ค๋ ์๊ฐ์ด ๊ฑธ๋ ธ์ผ๋ฉฐ, ์ผ๋ถ๋ ๊ธฐ์ ํ๋์จ์ด์ ์ฅ์ ๋ก ์ธํด ์ฌ์ฉ์ ์ค๋จํด์ผ๋ง ํ์ต๋๋ค.
ํด๋น ์ธ์คํด์ค์ EBS ๋ณผ๋ฅจ์ ์ํฅ์ ๋ฏธ์น ๊ฒ ์ธ์๋, EC2 RunInstances API์๋ ์ผ๋ถ ์ํฅ์ด ์์์ต๋๋ค. ์ผ๋ณธํ์ค์ ์คํ 1์ 21๋ถ, ์ํฅ์ ๋ฐ์ ๊ฐ์ฉ์์ญ ๋ด ์๋ก์ด EC2 ์ธ์คํด์ค ๊ฐ์ ์๋์ ๋ฆฌ์ ์ RunInstances API๋ก โidempotency tokenโ(๊ณ ๊ฐ์ด ์ฌ๋ฌ ๊ฐ์ ์ธ์คํด์ค๊ฐ ์์๋๋ ์ํ ๋ถ๋ด ์์ด run instance ๋ช ๋ น์ด๋ฅผ ์ฌ์๋ํ๊ฒ ํด์ฃผ๋ ๊ธฐ๋ฅ)์ ์ฌ์ฉํ๋ ค๋ ์๋๊ฐ ์ค๋ฅ์จ์ ๋ณด์ด๊ธฐ ์์ํ์ต๋๋ค. โidempotency tokenโ์ ํฌํจํ์ง ์์ ๋ค๋ฅธ EC2 API์ ๊ฐ์๋ ์ ์์ ์ผ๋ก ์๋ํ์ต๋๋ค. ์ด ์ด์๋ โidempotency tokenโ์ ์์กดํ๋ ์คํ ์ค์ผ์ผ๋ง(Auto Scaling)์ ์๋ก์ด ์์์ ๋ฐฉํดํ์ต๋๋ค. ์ผ๋ณธํ์ค์ ๊ธฐ์ค ์คํ 2์ 51๋ถ ์์ง๋์ด๋ค์ โidempotency tokenโ๊ณผ ์คํ ์ค์ผ์ผ๋ง๋ฅผ ํด๊ฒฐํ์ต๋๋ค. ์ํฅ์ ๋ฐ์ ๊ฐ์ฉ์์ญ ๋ด ์๋ก์ด EC2 ์ธ์คํด์ค ์์์ ์คํ 4์ 5๋ถ ํด๋น ๊ฐ์ฉ์์ญ์์ EC2 ์ปจํธ๋กค ํ๋ ์ธ ์๋ธ์์คํ ์ ๋ณต๊ตฌํ ๋๊น์ง ์ฅ์ ๋ฅผ ์ผ์ผ์ผฐ์ต๋๋ค. ์ํฅ์ ๋ฐ์ EBS ๋ณผ๋ฅจ์ ์๋ก์ด ์ค๋ ์ท์ ์์ฑํ๊ณ ์ ํ ์๋ ์ญ์ ํด๋น ์ด๋ฒคํธ ๋์ ์ค๋ฅ์จ์ด ์ฆ๊ฐํ์ต๋๋ค.
์ด๋ฒ ์ด๋ฒคํธ๋ ๋ฐ์ดํฐ์ผํฐ์์ ์ฌ์ฉํ๋ ๋ค์ํ ๋๊ฐ ์์คํ ์ ์ ์ดํ๊ณ ์ต์ ํ์ ์ฌ์ฉํ๋ ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ฅ์ ๋ก ๋ฐ์ํ๊ฒ ๋์์ต๋๋ค. ํด๋น ์ปจํธ๋กค ์์คํ ์ ๊ณ ๊ฐ์ฉ์ฑ ํ๋ณด๋ฅผ ์ํด ๋ค์์ ํธ์คํธ ์์์ ์ด์๋ฉ๋๋ค. ๊ทธ๋ฆฌ๊ณ , ์ปจํธ๋กค ์์คํ ์ ํฌ, ๋๊ฐ์ฅ์น, ์จ๋ ์ผ์ ๋ฑ ์ 3์ ์ฅ์น์ ์ปค๋ฎค๋์ผ์ด์ ์ ํ ์ ์๋๋ก ์ 3์ ์ฝ๋๋ฅผ ๊ฐ์ง๊ณ ์์ต๋๋ค. ์ปจํธ๋กค ์์คํ ์ ์ง์ ์ ์ผ๋ก ๋๋ ์ค์ ์ฅ์น์ ์ปค๋ฎค๋์ผ์ด์ ์ ํ๋ ์๋ฒ ๋๋ PLC(Programmable Logic Controller)๋ฅผ ํตํด ์ปค๋ฎค๋์ผ์ด์ ํฉ๋๋ค. ์ด๋ฒ ์ด๋ฒคํธ๊ฐ ๋ฐ์ํ๊ธฐ ๋ฐ๋ก ์ , ํด๋น ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ปจํธ๋กค ํธ์คํธ ์ค ํ๋์์ ์ฅ์ ๋ฅผ ์ผ์ผํค๊ณ ์์์ต๋๋ค. ์ด๋ฌํ ์ข ๋ฅ์ ํ์ผ์ค๋ฒ(failover)๊ฐ ๋ฐ์ํ๊ฒ ๋๋ฉด, ํด๋น ์ปจํธ๋กค ์์คํ ์ ์๋ก์ด ์ปจํธ๋กค ํธ์คํธ๊ฐ ๋ฐ์ดํฐ์ผํฐ ์ํ์ ๋ํ ๊ฐ์ฅ ์ต์ ์ ๋ณด๋ฅผ ๊ฐ๋๋ก ๋ค๋ฅธ ์ปจํธ๋กค ์์คํ ๋ฐ ์ปจํธ๋กคํ๋ ๋ฐ์ดํฐ์ผํฐ ์ฅ๋น(์: ๋ฐ์ดํฐ์ผํฐ ์ ๋ฐ์ ์ค์น๋ ๋๊ฐ ์ฅ๋น์ ์จ๋ ์ผ์)์ ์ ๋ณด๋ฅผ ๊ตํํด์ผ๋ง ํฉ๋๋ค. ์ 3์ ์ปจํธ๋กค ์์คํ ๋ก์ง ๋ด ๋ฒ๊ทธ๋ก ์ธํด ์ด๋ฌํ ์ ๋ณด ๊ตํ์ ๋ฐ์ดํฐ์ผํฐ์ ์ปจํธ๋กค ์์คํ ๊ณผ ์ฅ์น ๊ฐ ๊ณผ๋ํ ์ธํฐ๋์ ์ด ๋ฐ์ํ๊ฒ ๋์๊ณ , ์ด๋ก ์ธํด ์ปจํธ๋กค ์์คํ ์ด ๋ฌด์๋ต ์ํ๊ฐ ๋์์ต๋๋ค. AWS์ ๋ฐ์ดํฐ์ผํฐ๋ ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ด ์ฅ์ ๋ฅผ ์ผ์ผํค๊ฒ ๋๋ฉด, ์ปจํธ๋กค ์์คํ ๊ธฐ๋ฅ์ด ๋ณต๊ตฌ๋ ๋๊น์ง ๋๊ฐ ์์คํ ์ด ์ต๋ ๋๊ฐ ๋ชจ๋๋ก ์๋ํ๋๋ก ์ค๊ณ๋์ด ์์ต๋๋ค. ์ด๋ฌํ ์ค๊ณ๊ฐ ๋๋ถ๋ถ์ ๋ฐ์ดํฐ์ผํฐ์์๋ ์ ๋๋ก ์๋ํ์ง๋ง, ์ผ๋ถ์์ ๋๊ฐ ์์คํ ์ด ์์ ํ ๋๊ฐ ์ค์ ์ผ๋ก ์ ํํ์ง ๋ชปํ๊ณ ๊ฐ๋์ด ์ค๋จ๋์์ต๋๋ค. ์ถ๊ฐ ์์ ์ฅ์น๋ก, ๋ฐ์ดํฐ์ผํฐ ์ด์์๋ค์ ์ค์๋ ์ํฉ์์ ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ฐํํด์ ๋๊ฐ ์์คํ ์ โํผ์ง(purge)โ ๋ชจ๋์ ๋๊ณ ์ฌ๋นจ๋ฆฌ ๋จ๊ฑฐ์ด ๊ณต๊ธฐ๋ฅผ ๋นผ๋ผ ์ ์์ต๋๋ค. ์ด์ํ์์๋ ๋ฌธ์ ๊ฐ ๋ฐ์ํ ๋ฐ์ดํฐ์ผํฐ ๊ตฌ์ญ์์ ํผ์ง ๊ธฐ๋ฅ ํ์ฑํ๋ฅผ ์๋ํ์ง๋ง ์คํจํ์ต๋๋ค. ์ด ๋ ํด๋น ๋ถ๋ถ์ ๋ฐ์ดํฐ์ผํฐ ์จ๋๊ฐ ์ค๋ฅด๊ธฐ ์์ํ๊ณ , ์ง๋์น๊ฒ ๊ณผ์ด๋๋ฉด์ ์๋ฒ ์ ์ ๊ณต๊ธ์ด ์ฐจ๋จ๋์์ต๋๋ค. ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ฌ์ฉํ ์ ์์๊ธฐ ๋๋ฌธ์, ์ด์ํ์์๋ ๋ฐ์ดํฐ์ผํฐ ๋๊ฐ ์์คํ ์ํ์ ๋ํด ์ต์ํ์ ๊ฐ์์ฑ๋ง ํ๋ณดํ ์ ์์์ต๋๋ค. ๋ณต๊ตฌ๋ฅผ ์ํด ์ด์ํ์์๋ ์์์ ์ผ๋ก ๋ฌธ์ ๊ฐ ๋ฐ์ํ ์ฅ๋น ์ ์ฒด๋ฅผ ์กฐ์ฌํ๊ณ ์ฌ์ค์ ํด ์ต๋ ๋๊ฐ ์ค์ ์ํ๋ก ๋์์ผ ํ์ต๋๋ค. ์ด ๊ณผ์ ์์ ์ผ๋ถ ๊ณต๊ธฐ์กฐํ์ฅ์น๋ฅผ ์ ์ดํ๋ PLC ์ญ์ ๋ฌด์๋ต ์ํ๋ผ๋ ๊ฒ์ ์๊ฒ ๋์์ต๋๋ค. ๊ทธ๋์ PLC ์ญ์ ์ฌ์ค์ ์ด ํ์ํ์ต๋๋ค. ์ด PLC ์ปจํธ๋กค๋ฌ๊ฐ ์ฅ์ ๋ฅผ ์ผ์ผ์ผ ๋ํดํธ ๋๊ฐ ๋ฐ โํผ์งโ ๋ชจ๋๊ฐ ์๋์ ํ์ง ๋ชปํ์ต๋๋ค. ํด๋น ์ปจํธ๋กค๋ฌ๋ฅผ ์ฌ์ค์ ํ ๋ค์๋ ๋ฐ์ดํฐ์ผํฐ ์ด๋ฒคํธ ๋ฐ์ ๊ตฌ์ญ์ ๋๊ฐ์ด ๋ณต๊ตฌ๋์์ผ๋ฉฐ, ์จ๋๊ฐ ๋จ์ด์ง๊ธฐ ์์ํ์ต๋๋ค.
AWS๋ ์์ง ์ 3์ ๋ฒค๋๋ค๊ณผ ํจ๊ป ์ปจํธ๋กค ์์คํ ๊ณผ ํด๋น PLC์ ๋ฌด์๋ต์ ์ผ์ผํจ ๋ฒ๊ทธ์ ์ถ๊ฐ ์ธํฐ๋์ ์ ํ์ ํ๋ ์ค์ ์์ต๋๋ค. ์์ ๋ฐฉํธ์ผ๋ก ํด๋น ์ด๋ฒคํธ๊ฐ ์ฌ๋ฐํ๋ ๊ฒ์ ๋ฐฉ์งํ๊ณ ์ ์ปจํธ๋กค ์์คํ ์ ๋ฒ๊ทธ๋ฅผ ์ผ์ผํจ ํ์ผ์ค๋ฒ ๋ชจ๋๋ฅผ ๋นํ์ฑํ ์ํ๋ก ๋ง๋ค์์ต๋๋ค. AWS๋ ๋ง์ฝ ์ฌ๋ฐํ๊ฒ ๋ ๊ฒฝ์ฐ ์ํฉ์ ์ฌ๋นจ๋ฆฌ ํ์ ํ๊ณ , ํด๊ฒฐํ ์ ์๋๋ก ํ์ง ์ด์ํ๋ ๊ต์กํ์ต๋๋ค. ์ด๋ค ์ฌ์ ๋ก ๋น์ทํ ์ํฉ์ด ๋ฐ์ํ๊ฒ ๋๋ฉด ๊ณ ๊ฐ ์ํฅ์ด ๋ฐ์ํ๊ธฐ ์ ์ ์์คํ ์ ์ฌ์ค์ ํ ์ ์์ ๊ฒ์ผ๋ก ํ์ ํ๊ณ ์์ต๋๋ค. ๋ง์ง๋ง์ผ๋ก, โํผ์ง ๋ชจ๋โ๊ฐ PLC ์ปจํธ๋กค๋ฌ๋ฅผ ์์ ํ ์ฐํํ ์ ์๋๋ก ๋ฌธ์ ๋ฅผ ์ผ์ผํจ ๊ณต๊ธฐ์กฐํ์ฅ์น ์ ์ด ๋ฐฉ์์ ๋ณ๊ฒฝ ์์ ์ ํ๊ณ ์์ต๋๋ค. ์ด ๋ฐฉ์์ ์ต์ ๋ฐ์ดํฐ์ผํฐ ์ค๊ณ์ ์ ์ฉํ๊ธฐ ์์ํ ๊ฒ์ผ๋ก, PLC ๋ฌด์๋ต ์ํ์๋ โํผ์ง ๋ชจ๋โ๊ฐ ๋ณด๋ค ํ์คํ ์๋ํ๋๋ก ํ ๊ฒ์ ๋๋ค.
ํด๋น ์ด๋ฒคํธ ๋์ ๋ฆฌ์ ์ ๋ค๋ฅธ ๊ฐ์ฉ์์ญ์ ์๋ EC2 ์ธ์คํด์ค์ EBS ๋ณผ๋ฅจ์ ์ํฅ์ ๋ฐ์ง ์์์ต๋๋ค. ์ฌ๋ฌ ๊ฐ์ฉ์์ญ์์ ์ ํ๋ฆฌ์ผ์ด์ ์ ์คํํ ๊ณ ๊ฐ์ ์ด๋ฒคํธ ๊ธฐ๊ฐ ๋์ ๊ฐ์ฉ์ฑ์ ์ ์งํ ์ ์์์ต๋๋ค. ์ ํ๋ฆฌ์ผ์ด์ ์ ๊ฐ์ฅ ๋์ ๊ฐ์ฉ์ฑ์ด ํ์ํ ๊ณ ๊ฐ์๊ฒ๋ ๋ค์ค ๊ฐ์ฉ์์ญ ์ํคํ ์ฒ๋ก ์ ํ๋ฆฌ์ผ์ด์ ์ ์คํํ ๊ฒ์ ๊ถํฉ๋๋ค. ๊ณ ๊ฐ์๊ฒ ๊ฐ์ฉ์ฑ ๋ฌธ์ ๋ฅผ ์ผ์ผํฌ ์ ์๋ ๋ชจ๋ ์ ํ๋ฆฌ์ผ์ด์ ๊ตฌ์ฑ ์์๋ ์ด๋ฌํ ๋ด๊ตฌ์ฑ์ด ๋์(fault tolerant) ๋ฐฉ์์ผ๋ก ์คํ๋์ด์ผ ํฉ๋๋ค.
2019๋ 8์ 23์ผ ๋์ฟ(AP-NORTHEAST-1) ๋ฆฌ์ ์์ ๋ฐ์ํ ์๋น์ค ์ฅ์ ์ ๊ด๋ จํด ์ถ๊ฐ ์ ๋ณด๋ฅผ ์ ๋ฌ๋๋ฆฝ๋๋ค. ์ผ๋ณธํ์ค์๊ฐ ์คํ 12์ 36๋ถ๋ถํฐ ๋์ฟ(AP-NORTHEAST-1) ๋ฆฌ์ ๋ด ํ ๊ฐ์ฉ์์ญ(AZ: Availability Zone)์ EC2 ์๋ฒ ์ค ์ผ๋ถ๊ฐ ๊ณผ์ด๋ก ์ธํด ๊ฐ๋์ค๋จ ๋์์ต๋๋ค. ๊ทธ ๊ฒฐ๊ณผ EC2 ์ธ์คํด์ค๊ฐ ์์๋๊ณ , ํด๋น ๊ฐ์ฉ์์ญ์ ์ํฅ์ ๋ฐ๋ ์ผ๋ถ ๋ฆฌ์์ค์ EBS ๋ณผ๋ฅจ ์ฑ๋ฅ์ด ์ ํ๋์์ต๋๋ค. ์ด๋ฒ ๊ณผ์ด์ ์ ์ด ์์คํ ์ฅ์ ๋ก ๋ฐ์ํ ๊ฒ์ผ๋ก ์ด๋ก ์ธํด ๋ฌธ์ ๊ฐ ๋ฐ์ํ ๊ฐ์ฉ์์ญ ์ผ๋ถ์์ ๋ค์์ ์ค๋ณต ๋๊ฐ ์์คํ ์ด ์ค์๋์ ์ผ์ผํค๊ฒ ๋์์ต๋๋ค. ํด๋น ๋๊ฐ ์์คํ ์ ์ผ๋ณธํ์ค์๊ฐ ๊ธฐ์ค ์คํ 3์ 21๋ถ์ ๋ณต๊ตฌ๋์์ผ๋ฉฐ, ํด๋น ์์ญ์ ์จ๋๋ ์ ์์ ํ๋ณตํ๊ธฐ ์์ํ์ต๋๋ค. ์จ๋๊ฐ ์ ์ํ๋๋ฉด์, ์ํฅ์ ๋ฐ์ ์ธ์คํด์ค์ ์ ๋ ฅ ๊ณต๊ธ๋ ๋ณต๊ตฌ๋์์ต๋๋ค. ์ผ๋ณธํ์ค์๊ฐ ๊ธฐ์ค ์คํ 6์ 30๋ถ๊น์ง ์ํฅ์ ๋ฐ์ ์ธ์คํด์ค์ ๋ณผ๋ฅจ ๋๋ค์๊ฐ ๋ณต๊ตฌ๋์์ต๋๋ค. ์ ๋ ฅ ์ค๋จ๊ณผ ๊ณผ์ด๋ก ์ธํด ์ํฅ์ ๋ฐ์ ํ๋์จ์ด์ ํธ์คํ ๋์ด ์๋ ์ธ์คํด์ค์ ๋ณผ๋ฅจ์ ์์์์ต๋๋ค. ํด๋น ์ธ์คํด์ค์ ๋ณผ๋ฅจ์ ๋ณต๊ตฌํ๋๋ฐ ๋ณด๋ค ์ค๋ ์๊ฐ์ด ๊ฑธ๋ ธ์ผ๋ฉฐ, ์ผ๋ถ๋ ๊ธฐ์ ํ๋์จ์ด์ ์ฅ์ ๋ก ์ธํด ์ฌ์ฉ์ ์ค๋จํด์ผ๋ง ํ์ต๋๋ค.
ํด๋น ์ธ์คํด์ค์ EBS ๋ณผ๋ฅจ์ ์ํฅ์ ๋ฏธ์น ๊ฒ ์ธ์๋, EC2 RunInstances API์๋ ์ผ๋ถ ์ํฅ์ด ์์์ต๋๋ค. ์ผ๋ณธํ์ค์ ์คํ 1์ 21๋ถ, ์ํฅ์ ๋ฐ์ ๊ฐ์ฉ์์ญ ๋ด ์๋ก์ด EC2 ์ธ์คํด์ค ๊ฐ์ ์๋์ ๋ฆฌ์ ์ RunInstances API๋ก โidempotency tokenโ(๊ณ ๊ฐ์ด ์ฌ๋ฌ ๊ฐ์ ์ธ์คํด์ค๊ฐ ์์๋๋ ์ํ ๋ถ๋ด ์์ด run instance ๋ช ๋ น์ด๋ฅผ ์ฌ์๋ํ๊ฒ ํด์ฃผ๋ ๊ธฐ๋ฅ)์ ์ฌ์ฉํ๋ ค๋ ์๋๊ฐ ์ค๋ฅ์จ์ ๋ณด์ด๊ธฐ ์์ํ์ต๋๋ค. โidempotency tokenโ์ ํฌํจํ์ง ์์ ๋ค๋ฅธ EC2 API์ ๊ฐ์๋ ์ ์์ ์ผ๋ก ์๋ํ์ต๋๋ค. ์ด ์ด์๋ โidempotency tokenโ์ ์์กดํ๋ ์คํ ์ค์ผ์ผ๋ง(Auto Scaling)์ ์๋ก์ด ์์์ ๋ฐฉํดํ์ต๋๋ค. ์ผ๋ณธํ์ค์ ๊ธฐ์ค ์คํ 2์ 51๋ถ ์์ง๋์ด๋ค์ โidempotency tokenโ๊ณผ ์คํ ์ค์ผ์ผ๋ง๋ฅผ ํด๊ฒฐํ์ต๋๋ค. ์ํฅ์ ๋ฐ์ ๊ฐ์ฉ์์ญ ๋ด ์๋ก์ด EC2 ์ธ์คํด์ค ์์์ ์คํ 4์ 5๋ถ ํด๋น ๊ฐ์ฉ์์ญ์์ EC2 ์ปจํธ๋กค ํ๋ ์ธ ์๋ธ์์คํ ์ ๋ณต๊ตฌํ ๋๊น์ง ์ฅ์ ๋ฅผ ์ผ์ผ์ผฐ์ต๋๋ค. ์ํฅ์ ๋ฐ์ EBS ๋ณผ๋ฅจ์ ์๋ก์ด ์ค๋ ์ท์ ์์ฑํ๊ณ ์ ํ ์๋ ์ญ์ ํด๋น ์ด๋ฒคํธ ๋์ ์ค๋ฅ์จ์ด ์ฆ๊ฐํ์ต๋๋ค.
์ด๋ฒ ์ด๋ฒคํธ๋ ๋ฐ์ดํฐ์ผํฐ์์ ์ฌ์ฉํ๋ ๋ค์ํ ๋๊ฐ ์์คํ ์ ์ ์ดํ๊ณ ์ต์ ํ์ ์ฌ์ฉํ๋ ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ฅ์ ๋ก ๋ฐ์ํ๊ฒ ๋์์ต๋๋ค. ํด๋น ์ปจํธ๋กค ์์คํ ์ ๊ณ ๊ฐ์ฉ์ฑ ํ๋ณด๋ฅผ ์ํด ๋ค์์ ํธ์คํธ ์์์ ์ด์๋ฉ๋๋ค. ๊ทธ๋ฆฌ๊ณ , ์ปจํธ๋กค ์์คํ ์ ํฌ, ๋๊ฐ์ฅ์น, ์จ๋ ์ผ์ ๋ฑ ์ 3์ ์ฅ์น์ ์ปค๋ฎค๋์ผ์ด์ ์ ํ ์ ์๋๋ก ์ 3์ ์ฝ๋๋ฅผ ๊ฐ์ง๊ณ ์์ต๋๋ค. ์ปจํธ๋กค ์์คํ ์ ์ง์ ์ ์ผ๋ก ๋๋ ์ค์ ์ฅ์น์ ์ปค๋ฎค๋์ผ์ด์ ์ ํ๋ ์๋ฒ ๋๋ PLC(Programmable Logic Controller)๋ฅผ ํตํด ์ปค๋ฎค๋์ผ์ด์ ํฉ๋๋ค. ์ด๋ฒ ์ด๋ฒคํธ๊ฐ ๋ฐ์ํ๊ธฐ ๋ฐ๋ก ์ , ํด๋น ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ปจํธ๋กค ํธ์คํธ ์ค ํ๋์์ ์ฅ์ ๋ฅผ ์ผ์ผํค๊ณ ์์์ต๋๋ค. ์ด๋ฌํ ์ข ๋ฅ์ ํ์ผ์ค๋ฒ(failover)๊ฐ ๋ฐ์ํ๊ฒ ๋๋ฉด, ํด๋น ์ปจํธ๋กค ์์คํ ์ ์๋ก์ด ์ปจํธ๋กค ํธ์คํธ๊ฐ ๋ฐ์ดํฐ์ผํฐ ์ํ์ ๋ํ ๊ฐ์ฅ ์ต์ ์ ๋ณด๋ฅผ ๊ฐ๋๋ก ๋ค๋ฅธ ์ปจํธ๋กค ์์คํ ๋ฐ ์ปจํธ๋กคํ๋ ๋ฐ์ดํฐ์ผํฐ ์ฅ๋น(์: ๋ฐ์ดํฐ์ผํฐ ์ ๋ฐ์ ์ค์น๋ ๋๊ฐ ์ฅ๋น์ ์จ๋ ์ผ์)์ ์ ๋ณด๋ฅผ ๊ตํํด์ผ๋ง ํฉ๋๋ค. ์ 3์ ์ปจํธ๋กค ์์คํ ๋ก์ง ๋ด ๋ฒ๊ทธ๋ก ์ธํด ์ด๋ฌํ ์ ๋ณด ๊ตํ์ ๋ฐ์ดํฐ์ผํฐ์ ์ปจํธ๋กค ์์คํ ๊ณผ ์ฅ์น ๊ฐ ๊ณผ๋ํ ์ธํฐ๋์ ์ด ๋ฐ์ํ๊ฒ ๋์๊ณ , ์ด๋ก ์ธํด ์ปจํธ๋กค ์์คํ ์ด ๋ฌด์๋ต ์ํ๊ฐ ๋์์ต๋๋ค. AWS์ ๋ฐ์ดํฐ์ผํฐ๋ ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ด ์ฅ์ ๋ฅผ ์ผ์ผํค๊ฒ ๋๋ฉด, ์ปจํธ๋กค ์์คํ ๊ธฐ๋ฅ์ด ๋ณต๊ตฌ๋ ๋๊น์ง ๋๊ฐ ์์คํ ์ด ์ต๋ ๋๊ฐ ๋ชจ๋๋ก ์๋ํ๋๋ก ์ค๊ณ๋์ด ์์ต๋๋ค. ์ด๋ฌํ ์ค๊ณ๊ฐ ๋๋ถ๋ถ์ ๋ฐ์ดํฐ์ผํฐ์์๋ ์ ๋๋ก ์๋ํ์ง๋ง, ์ผ๋ถ์์ ๋๊ฐ ์์คํ ์ด ์์ ํ ๋๊ฐ ์ค์ ์ผ๋ก ์ ํํ์ง ๋ชปํ๊ณ ๊ฐ๋์ด ์ค๋จ๋์์ต๋๋ค. ์ถ๊ฐ ์์ ์ฅ์น๋ก, ๋ฐ์ดํฐ์ผํฐ ์ด์์๋ค์ ์ค์๋ ์ํฉ์์ ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ฐํํด์ ๋๊ฐ ์์คํ ์ โํผ์ง(purge)โ ๋ชจ๋์ ๋๊ณ ์ฌ๋นจ๋ฆฌ ๋จ๊ฑฐ์ด ๊ณต๊ธฐ๋ฅผ ๋นผ๋ผ ์ ์์ต๋๋ค. ์ด์ํ์์๋ ๋ฌธ์ ๊ฐ ๋ฐ์ํ ๋ฐ์ดํฐ์ผํฐ ๊ตฌ์ญ์์ ํผ์ง ๊ธฐ๋ฅ ํ์ฑํ๋ฅผ ์๋ํ์ง๋ง ์คํจํ์ต๋๋ค. ์ด ๋ ํด๋น ๋ถ๋ถ์ ๋ฐ์ดํฐ์ผํฐ ์จ๋๊ฐ ์ค๋ฅด๊ธฐ ์์ํ๊ณ , ์ง๋์น๊ฒ ๊ณผ์ด๋๋ฉด์ ์๋ฒ ์ ์ ๊ณต๊ธ์ด ์ฐจ๋จ๋์์ต๋๋ค. ๋ฐ์ดํฐ์ผํฐ ์ปจํธ๋กค ์์คํ ์ ์ฌ์ฉํ ์ ์์๊ธฐ ๋๋ฌธ์, ์ด์ํ์์๋ ๋ฐ์ดํฐ์ผํฐ ๋๊ฐ ์์คํ ์ํ์ ๋ํด ์ต์ํ์ ๊ฐ์์ฑ๋ง ํ๋ณดํ ์ ์์์ต๋๋ค. ๋ณต๊ตฌ๋ฅผ ์ํด ์ด์ํ์์๋ ์์์ ์ผ๋ก ๋ฌธ์ ๊ฐ ๋ฐ์ํ ์ฅ๋น ์ ์ฒด๋ฅผ ์กฐ์ฌํ๊ณ ์ฌ์ค์ ํด ์ต๋ ๋๊ฐ ์ค์ ์ํ๋ก ๋์์ผ ํ์ต๋๋ค. ์ด ๊ณผ์ ์์ ์ผ๋ถ ๊ณต๊ธฐ์กฐํ์ฅ์น๋ฅผ ์ ์ดํ๋ PLC ์ญ์ ๋ฌด์๋ต ์ํ๋ผ๋ ๊ฒ์ ์๊ฒ ๋์์ต๋๋ค. ๊ทธ๋์ PLC ์ญ์ ์ฌ์ค์ ์ด ํ์ํ์ต๋๋ค. ์ด PLC ์ปจํธ๋กค๋ฌ๊ฐ ์ฅ์ ๋ฅผ ์ผ์ผ์ผ ๋ํดํธ ๋๊ฐ ๋ฐ โํผ์งโ ๋ชจ๋๊ฐ ์๋์ ํ์ง ๋ชปํ์ต๋๋ค. ํด๋น ์ปจํธ๋กค๋ฌ๋ฅผ ์ฌ์ค์ ํ ๋ค์๋ ๋ฐ์ดํฐ์ผํฐ ์ด๋ฒคํธ ๋ฐ์ ๊ตฌ์ญ์ ๋๊ฐ์ด ๋ณต๊ตฌ๋์์ผ๋ฉฐ, ์จ๋๊ฐ ๋จ์ด์ง๊ธฐ ์์ํ์ต๋๋ค.
AWS๋ ์์ง ์ 3์ ๋ฒค๋๋ค๊ณผ ํจ๊ป ์ปจํธ๋กค ์์คํ ๊ณผ ํด๋น PLC์ ๋ฌด์๋ต์ ์ผ์ผํจ ๋ฒ๊ทธ์ ์ถ๊ฐ ์ธํฐ๋์ ์ ํ์ ํ๋ ์ค์ ์์ต๋๋ค. ์์ ๋ฐฉํธ์ผ๋ก ํด๋น ์ด๋ฒคํธ๊ฐ ์ฌ๋ฐํ๋ ๊ฒ์ ๋ฐฉ์งํ๊ณ ์ ์ปจํธ๋กค ์์คํ ์ ๋ฒ๊ทธ๋ฅผ ์ผ์ผํจ ํ์ผ์ค๋ฒ ๋ชจ๋๋ฅผ ๋นํ์ฑํ ์ํ๋ก ๋ง๋ค์์ต๋๋ค. AWS๋ ๋ง์ฝ ์ฌ๋ฐํ๊ฒ ๋ ๊ฒฝ์ฐ ์ํฉ์ ์ฌ๋นจ๋ฆฌ ํ์ ํ๊ณ , ํด๊ฒฐํ ์ ์๋๋ก ํ์ง ์ด์ํ๋ ๊ต์กํ์ต๋๋ค. ์ด๋ค ์ฌ์ ๋ก ๋น์ทํ ์ํฉ์ด ๋ฐ์ํ๊ฒ ๋๋ฉด ๊ณ ๊ฐ ์ํฅ์ด ๋ฐ์ํ๊ธฐ ์ ์ ์์คํ ์ ์ฌ์ค์ ํ ์ ์์ ๊ฒ์ผ๋ก ํ์ ํ๊ณ ์์ต๋๋ค. ๋ง์ง๋ง์ผ๋ก, โํผ์ง ๋ชจ๋โ๊ฐ PLC ์ปจํธ๋กค๋ฌ๋ฅผ ์์ ํ ์ฐํํ ์ ์๋๋ก ๋ฌธ์ ๋ฅผ ์ผ์ผํจ ๊ณต๊ธฐ์กฐํ์ฅ์น ์ ์ด ๋ฐฉ์์ ๋ณ๊ฒฝ ์์ ์ ํ๊ณ ์์ต๋๋ค. ์ด ๋ฐฉ์์ ์ต์ ๋ฐ์ดํฐ์ผํฐ ์ค๊ณ์ ์ ์ฉํ๊ธฐ ์์ํ ๊ฒ์ผ๋ก, PLC ๋ฌด์๋ต ์ํ์๋ โํผ์ง ๋ชจ๋โ๊ฐ ๋ณด๋ค ํ์คํ ์๋ํ๋๋ก ํ ๊ฒ์ ๋๋ค.
ํด๋น ์ด๋ฒคํธ ๋์ ๋ฆฌ์ ์ ๋ค๋ฅธ ๊ฐ์ฉ์์ญ์ ์๋ EC2 ์ธ์คํด์ค์ EBS ๋ณผ๋ฅจ์ ์ํฅ์ ๋ฐ์ง ์์์ต๋๋ค. ์ฌ๋ฌ ๊ฐ์ฉ์์ญ์์ ์ ํ๋ฆฌ์ผ์ด์ ์ ์คํํ ๊ณ ๊ฐ์ ์ด๋ฒคํธ ๊ธฐ๊ฐ ๋์ ๊ฐ์ฉ์ฑ์ ์ ์งํ ์ ์์์ต๋๋ค. ์ ํ๋ฆฌ์ผ์ด์ ์ ๊ฐ์ฅ ๋์ ๊ฐ์ฉ์ฑ์ด ํ์ํ ๊ณ ๊ฐ์๊ฒ๋ ๋ค์ค ๊ฐ์ฉ์์ญ ์ํคํ ์ฒ๋ก ์ ํ๋ฆฌ์ผ์ด์ ์ ์คํํ ๊ฒ์ ๊ถํฉ๋๋ค. ๊ณ ๊ฐ์๊ฒ ๊ฐ์ฉ์ฑ ๋ฌธ์ ๋ฅผ ์ผ์ผํฌ ์ ์๋ ๋ชจ๋ ์ ํ๋ฆฌ์ผ์ด์ ๊ตฌ์ฑ ์์๋ ์ด๋ฌํ ๋ด๊ตฌ์ฑ์ด ๋์(fault tolerant) ๋ฐฉ์์ผ๋ก ์คํ๋์ด์ผ ํฉ๋๋ค.