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CloudWatch ?? ?????
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Seon Yong Park, Solutions Architect
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1.?CloudWatch	
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CloudWatch Deep Dive
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RequestCount	
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CloudWatch Logs
CloudWatch Logs
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CloudWatch? ?? ??? ?? ???
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CloudWatch custom dashboard
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Custom dashboard
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Custom dashboard
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Custom dashboard
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???? FAQs
FAQ 1. EC2 ???? ?? ?? ??? failed? ???
??? ?? ??? ????.	
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1.? ????? stop/start ????	
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2.? Ephemeral	
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3.? EC2? ??? ??? ??? ??? ?? ??? ???.	
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4.? ??? ??? ???, ??? ??? ???.	
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FAQ 2. MySQL read replication? ??? (MySQL on EC2)
	
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1.? ?? ?? ?? ????? ??? ???? ?? ? ? ? ????? ?? ?	
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2.? ?? DB	
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3.? ?? ?? ???? Max_allowed_packet	
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Max_allowed_packet? ?? ?? ?? ?? ?? ???	
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FAQ 2. MySQL read replication? ???
¡ì?? MySQL?? ???? 	
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?? ??? ???? ????? ????(IO_THREAD),	
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Show	
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Show	
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FAQ 2. MySQL read replication? ???
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?? Read_Master_Log_Pos	
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tements	
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FAQ 3. ??? ??? TCP/IP?? ??? ??? ??????
1.? Rogue	
 ?DNS	
 ?server	
 ?:	
 ?	
 ??????? ??? ? ?? DNS??? ?? ??? ?? ??, ? ?
?? ???? ? ?? ??? ? ? ? ????.	
 ?
	
 ?
2.? ??? hosts??? ??? ?? ?? ? ????. ?? ???? ?? ??? ??? ???
??? ? ?? ??? ???? ?? ???(DNS	
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3.? ???? ????? ?? 	
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4.? TCP/IP ??? ??? ??	
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5.? ????? ???????? TCP/IP? ?? ??? ??	
 ?
6.? ping	
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 ?www.amazon.com	
 ? or	
 ?	
 ?tracert	
 ?www.ubuntu.org	
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7.? 3rd	
 ?party	
 ?trace	
 ?tools	
 ?:	
 ?Tracetcp,	
 ?Winmtr	
 ?
FAQ 4. EBS ??? ????? ??? ?? ???
1.? EBS	
 ??? ???? ??? EC2	
 ????? ???? ??	
 ?
2.? EBS-?©\opGmized	
 ?EC2? ??? ?? ?? ???? ???? ??.	
 ?	
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3.	
 ??? ??? ?? ?? ???? ???? ??? ?	
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Linux	
 ?:	
 ?iostat	
 ?Output	
 ?(h[p://blog.serverfault.com/2010/07/06/777852755/)	
 ?
	
 ?
??? :	
 ?Perfmon? ??? ??? ???? ??	
 ?
h[p://blogs.technet.com/b/askcore/archive/2012/02/07/measuring-?©\disk-?©\latency-?©\with-?©\w
indows-?©\performance-?©\monitor-?©\perfmon.aspx	
 ?
	
 ?
4.	
 ?AWS	
 ?trusted	
 ?advisor? ???? EBS??? ?? ??? ??? ?.	
 ?
	
 ?
AWS Knowledge center
h[ps://aws.amazon.com/ko/premiumsupport/knowledge-?©\center/	
 ?
	
 ?
Thank you!
Seon Yong Park, AWS Solutions Architect
seonpark@amazon.com

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CloudWatch ?? ????? ??? ??? ?? ??? - ??? ???? ????:: AWS Cloud Track 3 Gaming

  • 1. CloudWatch ?? ????? ??? ??? ?? ??? Seon Yong Park, Solutions Architect
  • 2. ?? 1.?CloudWatch ? 2.?CloudWatch ?Deep ?Dive ? 3.??? ?? FAQs ?
  • 3. ??? ? ?? ??? ??? ? ??? ? ??? ????? ?????? ???. ? ? ¨C ??? ?? (??) ?-?©\ ? ? CloudWatch
  • 4. Amazon CloudWatch ??? ? ??? ??? ??? ??? ??
  • 6. AWS CloudWatch ¡ì??AWS ???? ?? ??? ¡ì??300+ built-in ?? ¡ì????? ??? ?? ?? ?? ¡ì????? ?? ???? ¡ì????? ???&???? ??? ? ???
  • 7. CloudWatch AWS? ?? ???? ?? ?? ??? ? ? ?? AWS ???? ??, ??, ??? ??/?? ? ?? ?? ??? ?? ???? ?? ??? ? ?? ?? ??? ??? ?? ??? ? Custom ?Metric ? Memory ?Free/Filesystem ?Free ? OS ?Log/ApplicaGon ?Log ? StatusCheckFailed_Instance ? StatusCheckFailed_System ? CUPUGlizaGon ? DiskReadBytes ?/ ?DiskReadOps ? NetworkIn ?/ ?NetworkOut ? EC2 ?AcGon ? AutoScaling ? NoG?caGon ? Alram ?
  • 8. CloudWatch AWS ???? ? ?????? ? Auto ?Scaling ? AWS/AutoScaling ? AWS ?Billing ? AWS/Billing ? Amazon ?CloudFront ? AWS/CloudFront ? Amazon ?CloudSearch ? AWS/CloudSearch ? Amazon ?DynamoDB ? AWS/DynamoDB ? Amazon ?ElasGCache ? AWS/ElasGCache ? Amazon ?ElasGc ?Block ?Store ? AWS/EBS ? Amazon ?ElasGc ?Compute ?Cloud ? AWS/EC2 ? ElasGc ?Load ?Balancing ? AWS/ELB ? Amazon ?ElasGc ?MapReduce ? AWS/ElasGcMapReduce ? Amazon ?Kinesis ? AWS/Kinesis ? Amazon ?Machine ?Learning ? AWS/ML ? AWS ?OpsWorks ? AWS/OpsWorks ? Amazon ?RedshiV ? AWS/RedshiV ? AWS ???? ? ?????? ? Amazon ?RelaGonal ?Database ?Service ? AWS/RDS ? Amazon ? ?Route ? ?53 ? ? AWS/Route53 ? Amazon ? ?Simple ?NoG?caGon ?Service ? ? AWS/SNS ? Amazon ? ?Simple ?Queue ?Service ? ? AWS/SQS ? Amazon ? ?Simple ?Work?ow ?Service ? ? AWS/SWF ? AWS ? ?Storage ? ?Gateway ? ? AWS/StorageGateway ? Amazon ? ? ?WorkSpaces ? ? AWS/WorkSpaces ? Amazon ?RelaGonal ?Database ?Service ? ? AWS/RDS ? Amazon ? ?Route ? ?53 ? AWS/Route53 ? Amazon ? ?Simple ?NoG?caGon ?Service ? AWS/SNS ? h[p://docs.aws.amazon.com/ko_kr/AmazonClo udWatch/latest/DeveloperGuide/supported_se rvices.html ?
  • 9. CloudWatch ?? ?? ?? Metrics ? Namespace ? Metrics ?name ? (CPUUGlizaGon) ? Metrics ?name ? (HealthyHostCount) ? Metrics ?name ? (CPUUGlizaGon) ? Namespace ? (AWS/EC2) ? Namespace ? (AWS/RDS) ? Namespace ? (AWS/ELB) ? Metrics ?: ? ???? ??? ? ?? ??? ? Namespace ?: ? AWS???? ? ?? ?
  • 10. CloudWatch ?? ?? ?? Metrics ? Namespace ? Metrics ?name ? (CPUUGlizaGon) ? Metrics ?name ? (HealthyHostCount) ? Metrics ?name ? (CPUUGlizaGon) ? Namespace ? (AWS/EC2) ? Namespace ? (AWS/RDS) ? Namespace ? (AWS/ELB) ? Dimension ? Dimension ?: ? ??? ???? ?? ? ? ??? ?? ??? ?? ?? ? Dimension ? (InstanceId) ? Dimension ? (AutoscalingGroup) ?
  • 11. CloudWatch ?? ?? ?? Metrics ? Namespace ? Metrics ?name ? (CPUUGlizaGon) ? Metrics ?name ? (HealthyHostCount) ? Metrics ?name ? (CPUUGlizaGon) ? Namespace ? (AWS/EC2) ? Namespace ? (AWS/RDS) ? Namespace ? (AWS/ELB) ? Dimension ? Dimension ? (InstanceId) ? Dimension ? (AutoscalingGroup) ? Sum ? Max ? Min ? Average ? Sample ?Count ? StaGsGc ?
  • 12. ?? ?? ?? ? ??? ??? ? ?? ?? ?? ? ?? ???? ?? ?? ? ???? ??? ? ?? ?(Dimension) ? ?? ? ??? ???? ?? ?
  • 13. CloudWatch ?? CPUUGlizaGon ? ? ? CPUCreditBalance ? ? ? CPUCreditUsage ? ? ? DiskReadBytes ? ? ? DiskWriteBytes ? ? ? DiskWriteOps ? ? ? NetworkOut ? ? ? NetworkIn ? ? ? StatusCheckFailed_Instance ? ? ? StatusCheckFailed ? ? ? StatusCheckFailed_System ? ??? ?? ??? ??(EC2) ? ???? ??? ????? ?? ??? ? ?? ?? ?
  • 14. CloudWatch ??? ?? ?? ??? ?? ??? ??? ???? ?? ?? ? ?? AWS ?CLI? "put-?©\metric-?©\data", ?API ?Tools? "mon-?©\put-?©\data"?? "PutMetricData¡± ?API? CloudWatch ? ???? ??? ? ?? ?? ???? HTTP ?GET? 8KB, ?HTTP ?POST? 40KB, ???? PutMetricData ???? 20?? ???? ? ?? ? ?? API ???? ?? ? ? ?? : ??? ?? ??? ??? ???? ?? ??? ??? ?? ? ? $ ?aws ?cloudwatch ?put-?©\metric-?©\data ?¨Cmetric-?©\name ?RequestLatency ? ? -?©\-?©\namespace ?"GetStarted¡° ? ? -?©\-?©\Gmestamp ?2014-?©\10-?©\28T12:30:00Z ? ? -?©\-?©\value ?87 ? ? ? -?©\-?©\unit ?Milliseconds ? ? ? ? $ ?aws ?cloudwatch ?put-?©\metric-?©\data ?-?©\-?©\metric-?©\name ?RequestLatency ? ?-?©\-?©\namespace ?"GetStarted¡° ?-?©\-?©\Gmestamp ?2014-?©\10-?©\28T12:30:00Z ? ?-?©\-?©\staGsGc-?©\value ?Sum=60,Minimum=15,Maximum=105,SampleCount=5 ? ? ? ? ?? ?? ? ?? ?? ?? ?
  • 15. CloudWatch ??? CloudWatch?? ??? ??? ¡°???¡±??. ? ?? ?? ???? ??? ???? ??? ? ? ?? ? ??? ?? ??? ?? ?? ?? ?? ?? ? ?? ?? ? ?? ?? ?? ? ?? ?? ?? ? ?? ? ?? ? Minimum ? ?? ?? ????? ??? ?? ?? ?. ? ?? ???? ?? ????? ?? ?? ??? ??? ? ??. ? Maximum ? ?? ?? ????? ??? ?? ?? ?. ? ?? ???? ?? ????? ?? ????? ??? ? ??. ? Sum ? ?? ??? ?? ? ?? ??. ? ??? ??? ? ??? ????? ??? ?. ? Average ? ?? ?? Sum/SampleCount ??. ? ??? Maximun, ?Minimum? ???? ??? ??? ????, ?? ???? ???? ? ?? ? ???? ???? ??? ? ??. ??? ??? ??? ?? ?? ??? ??? ??? ??? ??? ?. ? SampleCount ? ?? ??? ???? ???? ??? ?? ? ??? ??? 2??? ? ?? 2? ?? ???? ?? get-?©\metric-?©\staGsGcs ??? ???? ???? ?? ??? ?? ? ??? ?? ??? ?? 1? ? ?? ??? ????? 1? ??. 5? ? ??? ??. ?
  • 16. CloudWatch ¨C ??? ??? ?? ELB ? RDS ? ?? Latency ? ?? BackendConnecGonErrors ? ?? HealthyHostCount ? ?? UnHealthyHostCount ? ?? RequestCount ? ?? SurgeQueueLength ? ?? SpilloverCount ? ?? HTTPCode_ELB_5XX ? ?? HTTPCode_Backend_4XX ? h[p://docs.aws.amazon.com/ko_kr/ElasGcLoadBalancing/latest/DeveloperGuide/elb-?©\cloudwatch-?©\metrics.html ? h[p://docs.aws.amazon.com/ko_kr/AmazonCloudWatch/latest/DeveloperGuide/rds-?©\metricscollected.html ? ?? CPUUGlizaGon ? ?? FreeableMemory ? ?? SwapUsage ? ?? FreeStorageSpace ? ?? DiskQueueDepth ? ?? ReadIOPS ? ?? ReadThroughput ? ?? ReadLatency ? ?? NetworkReceiveThroughput ? ?? NetworkTransmitThroughput ? ?? WriteIOPS ? ?? WriteThroughput ? ?? WriteLatency ? ?? DatabaseConnecGons ? ?? BinLogDiskUsage ?
  • 17. CloudWatch ¨C ?? ?? OK ? ?? ? (Alarm) ? ?? ? (INSUFFICIENT) ? ?? ? ???? ??? ?? ? (???) ? ?? ? ???? ? ?? ?? ? (????) ? ???? ???? ??? ??? ? ?? ? (?? ??) ?
  • 18. CloudWatch ?? ?? Custom ?Metric ? Memory ?Free/Filesystem ?Free ? OS ?Log/ApplicaGon ?Log ? StatusCheckFailed_Instance ? StatusCheckFailed_System ? CUPUGlizaGon ? DiskReadBytes ?/ ?DiskReadOps ? NetworkIn ?/ ?NetworkOut ? EC2 ?AcGon ? AutoScaling ? NoG?caGon ? Alram ? ???? ? ?? ?
  • 19. ??? ? ??? ??? ? ??? ???, ????? ???? ??? ????. ? -?©\ ?? ??? -?©\ ? ? CloudWatch Deep Dive
  • 20. Elastic Load Balancer ?? ELB ? ?? ? ?? ? RequestCount ? ??? ??/??? ???? ?? ???(1 ?or ?5?)??. ?HTTP ?? ? ??? ????. ???? ???? sum?. ?min, ?max, ?average? ?? 1 ? ???? ? SurgeQueueLength ? ???? ???? ?? ??? ? ??. ?ELB? ?? ??? ????? ?? ??? ??? ?? ?? ??? ??. ?? ?? ??? 1024?. ?? ?? ?? ?? ??? ????. ??? ???? max(? ??? ? ?? ?? ??) ? SpilloverCount ? ?? ?? ?? ?? ?? ??? ??? ? ??. ???? ???? sum ? BackendConnecGonEr rors ? ELB? ??? ?????? ????? ???? ???? ?? ??. ? ELB? ??? ???? ?? ??? ?????, ? ??? ????? ? ?? ? ??. ???? ???? sum ? Latency ? ??? ?? ???, ?ELB? ??? ????? ?? ??? ?? ??? ? ?? ??. ???? ???? average. ?max? ?? ????? ??? ? ???? ?? ?
  • 21. EC2 ?? EC2 ? ?? ? ?? ? CPUCreditUsage ? (T2 ????) ??? ???? ??? CPU ???? ?? ? CPUUGlizaGon ? ?? ?????? ???? ?? ??? ?? ? DiskReadOps ? ?? ????? ??? ?? ?? ????? ???? ?????? ?. ?? EBS??? ????? EBS ???? ?? ?. ? NetworkOut ? ????? ???? ?????? ?? ?? ??? ?. ? StatusCheckFailed ? StatusCheckFailed_Instance? StatusCheckFailed_System ? ??? ?. ?????? ???? 1(??), ?0(??) ? ??(Dimension) ? ?? ? AutoscalingGroupName ? ? ?? ??? ???? ??? ?????? ??? ???? ? ? ????? ???? ?? ? ? ??. ? ImageId ? ??? EC2 ?AMI? ???? ?? ?? ?? ????? ?? ?? ? ? InstanceType ? ???? ???? ??? ?
  • 22. RDS ?? RDS ? ?? ? ?? ? BinLogDiskUsage ? ???? ??? ?? ???? ??? ? ? ?? ?????? ???? ?? ??? ?? ? DiskQueueDepth ? ???? ?????? ???? IO?? ?? ? ReplicaLag ? MySQL ?? ???. ?? DB?? ?? DB? ??? ??? ???? ?? ??(?) ? ReadLatency/ WriteLatency ? Disk ?I/O ????? ??? ??? ??(?) ? ??(Dimension) ? ?? ? DatabaseClass ? ?? ??, ?db.m1.small ? ?????? ???? ??? ? EngineName ? ?????? ???. ?? ?? mysql ?
  • 24. CloudWatch Logs ¡ì?? CloudWatch ?Logs? ??? ?? ???? ? ¡ì?? OS, ??? ????? ???? ???? ? ? ?? ? ¡ì?? ????? ?? ?? ???? CloudWatch ?? ???? ?? ? ¡ì?? ?? ???? ?? ??? ?? ?? ? ¡ì?? 1? ~ ?? ???? ?? ?? ?
  • 25. CloudWatch Logs ?? ??? Amazon ?Linux ? Ubuntu ? Windows ? REHEL ? Log ?Agent ? Log ?Agent ? Log ?Agent ?EC2 ?con?g ? CloudWatch ??? ?CloudWatch ?Logs ? CloudWatch ??? ? SNS ?
  • 26. CloudWatch Logs ?? ??? Log ?Group ? ??? ? Log ?Stream ? web001.ap-?©\northeast-?©\1 ? web002.ap-?©\northeast-?©\1 ? web003.ap-?©\northeast-?©\1 ? Log ?Event ?
  • 27. ?? ???? ??? ?? ???? ?? ???(UTF-?©\8)? ?? ?
  • 28. ?? ????? ¡ì?? ??? : ??? ?? ? -?©\? CloudWatch ?Logs ?Agent ? ¡ì?? ??? : ??? ??, ??? ?????, ?? ??? ? -?©\? EC2 ?Con?g ? ¡ì?? ?? ? -?©\? AWS ?CLI ? -?©\? AWS ?SDK ? -?©\? 3rd ??? ? (?uentd ??) ?
  • 29. ??? ?? ???? ¡ì?? CloudWatch ?Logs ?Agent ? ?? ?? ???? CloudWatch ?Logs? ??? AWS ?CLI???? ? ?? AWS ?logs ?push ??? ???? ??? ???? ? ?? ?? ? ??? ?? ? ?? ?? ?? EC2 ??????? ?? ??? ?? ? ? ¡ì?? ?? ?? ? ? ?? Amazon ?Linux ? ?? Ubuntu ?Server ? ?? CentOS ? ?? Red ?Hat ?Enterprise ?Linux ?
  • 30. ?? ???? ???? ¡ì?? ???? ?? ???? ?? ?? ? ?? ?? ????? 1? ??? ? ?? ?? ???? ??? ?? 32 ?KB ? ?? 32KB? ??? ??? ?? ? ? ? ¡ì?? ?? ???? ?? ? ?? Rename ?and ?re-?©\create ? ¨¹?? ?? ??? ???(??)? ?? rename?? ? ?? ??? ?? ?? ? ¨¹?? ?) ?/var/log/syslog.log ?¨¤?/var/log/syslog.log.1 ?? ?? ? ?? Copy ?and ?truncate ? ¨¹?? ?? ?? ??? ??? ? truncate ? ¨¹?? ?) ?/var/log/syslog.log ?¨¤?/var/log/syslog.log.1 ?? ???? /var/log/syslog.log ?tr uncate ? ?? Create ?common-?©\pa[erned ??le ? ¨¹?? ???? ??? ??? ??? ??? ?? ? ¨¹?? ?) ?/var/log/syslog.log.2014-?©\01-?©\01 ?? ??? /var/log/syslog.log.2014-?©\01-?©\02? ???? ?? ?
  • 31. ??? : CloudWatch logs?? ¡ì?? EC2Con?g ??? CloudWatch ?Logs?? ? ?? JSON ?? ??? ???? ????? ??? ?? ? ?? C ?: ? ?Program ?Files ? ?Amazon ? ?Ec2Con?gService ? ?Se pngs ?AWS.EC2.Windows.CloudWatch.json ???? ? ?? ? ¡ì?? ??? ??? ?? ? ?? ???? ??? ?? ? ?? ??? ???? ? ?? IIS ??? ? ?? ?? ??? ?
  • 33. CloudWatch Logs ?? ?? ?? ???? ?? ???? ??? ? ? ?? ?
  • 34. CloudWatch Logs ?? ?? ?? ???? ??? ?? ?? ??? ?? ? ?? ???? ??. ?SNS ??? ??. ? ?? ??? ???? ? CloudWatch ??? ? ?? ?? ?
  • 35. ?? ?? ? ¡ì?? ?? ? ? [ip, ?user, ?username, ?Gmestamp, ?request, ?status_code, ?bytes ?> ?1000] ? ? [ip, ?user, ?username, ?Gmestamp, ?request, ?status_code ?= ?200, ?bytes] ? ? [ip, ?user, ?username, ?Gmestamp, ?request, ?status_code ?= ?4*, ?bytes] ? ? [ip, ?user, ?username, ?Gmestamp, ?request ?= ?*html*, ?status_code ?= ?4*, ?bytes] ? ? ? ¡ì?? ???? ? ???([ ?]) ?? ?? ???(¡° ?¡±)? ?? ??? ?? ??? ??? ? ?? ??? ?? ??? ?? ? 127.0.0.1 ?-?©\ ?frank ?[10/Oct/2000:13:25:15 ?-?©\0700] ?"GET ?/apache_pb.gif ?HTTP/1.0" ?200 ?1534 ? ? 127.0.0.1 ?-?©\ ?frank ?[10/Oct/2000:13:35:22 ?-?©\0700] ?"GET ?/apache_pb.gif ?HTTP/1.0" ?500 ?5324 ? ? 127.0.0.1 ?-?©\ ?frank ?[10/Oct/2000:13:50:35 ?-?©\0700] ?"GET ?/apache_pb.gif ?HTTP/1.0" ?200 ?4355 ? ?
  • 36. CloudWatch? ?? ??? ?? ??? RDS ? CloudTrail ? VPC ?Flow ?Logs ? EC2 ? agent ? CloudWatch ? Logs ? CloudWatch ? AutoScaling ? SQS ? SNS ? Kinesis ? Kinesis ? ? ApplicaGon ? Lambda ? EC2 ? ¡ì?? ??/?? ? ?? ?? ? ?? ??? ?? ? ?? ?? ? ?? ??? ? ?? ?? ???? ??? ? ?? ??? ??/?? ?
  • 37. CloudWatch? ??? ??? ??? ? ¡ì?? IAM ??? ??? ?? ??? ?? ? ¡ì?? AWS ???? ?? ??? ?? ???? ? ?? ? ¡ì?? CloudWatch ?Logs ?SubscripGon? ?? Zabbix? ?? ?? ? ¡ì?? ?? ??? AWS ?Lambda? ???? ?? ?? ?? ? ¡ì?? Auto ?Scaling? ?? ?? ?? ? ¡ì?? Amazon ?ECS? ?? ????? Lambda? Auto ?Scaling? ?? ? ¡ì?? VPF ?Flow ?logs? ElasGcsearch ?+ ?Kibaba ?? ??? ? ?
  • 38. CloudWatch custom dashboard ¡ì?? CloudWatch ???? ?? ???? ???? ???? ?? ?? ? ¡ì?? ?? ???? ?? ??? ??? ???? ??? ? ? ?? ? ¡ì?? ???, ??? ??? ?? ?? ? ¡ì?? ?? ??? ??? ???? ??? ????? ??? ?? ?? ? ?
  • 39. Custom dashboard ???? ?? ???? ?? ? ?? ??? ?? ?
  • 42. ?? ??? ?? ????. ??? ? ?? ???? ?? ?? ?? ?? ??? ???? . ? -?©\ ??? -?©\ ? ???? FAQs
  • 43. FAQ 1. EC2 ???? ?? ?? ??? failed? ??? ??? ?? ??? ????. ? ? 1.? ????? stop/start ???? ? 2.? Ephemeral ?disk? ??? ?????. ? 3.? EC2? ??? ??? ??? ??? ?? ??? ???. ? ? 4.? ??? ??? ???, ??? ??? ???. ?
  • 44. FAQ 2. MySQL read replication? ??? (MySQL on EC2) ? 1.? ?? ?? ?? ????? ??? ???? ?? ? ? ? ????? ?? ? ? 2.? ?? DB ?????? ?? ?? ???? ???? DB ????? ??? ??? ?? ????? ?????. ? 3.? ?? ?? ???? Max_allowed_packet ????? ?? ?? DB????? Max_allowed_packet? ?? ?? ?? ?? ?? ??? ?
  • 45. FAQ 2. MySQL read replication? ??? ¡ì?? MySQL?? ???? ? ?? ??? ???? ????? ????(IO_THREAD), ?relay ?log??? ?? ? ?? relay ?log???? ???? ??? ?? DB? ??(SQL_THREAD) ? ?? ? ? ???? ??? ????? ?? ? ? ¡ì?? Master ?Status ?? Slave ?Status ??? ? Show ?Master ?Status ? Show ?Slave ?Statusg ? ???? ???? ????? ??? ?? ? ? ?
  • 46. FAQ 2. MySQL read replication? ??? ¡ì?? ???? ? ?? Read_Master_Log_Pos ?: ?IO ????? ?? ?? ??? ???? ??? ?? ? ?? Exec_Master_Log_Pos ?: ?SQL ????? ????? ??? ???? ??? ??. ?? ? ? ??? ??? ?? SQL ?THREAD ?? ??? ????? ???. ? ?? Seconds_Behind_Master ?: ???? ??? ?? ??? ???? ???? ?(?) ? ?? Relay_Log_Space ?: ???? ???? ??? ? ? ¡ì?? SQL_THREAD_LAG ? SQL_THREAD ?lag ?= ? ?Read_Master_Log_Pos ?¨C ?Exec_Master_Log_Pos ? ? ? ¡ì?? ???? ?? ? ?? ?? IO_THREAD ? ?? ??? ??. ??? ????? ??? ?? ?? ?? ? ?? IO_Thread ?? ?? : ?????? ??? ?? ? ?? SQL_THREAD? ?? : ? ??? ??? ??? ?? ??. ?? ???. ?log_slow_slave_sta tements ???? ?? log_query_Gme?? ?? ??? ??? ??. ? ?
  • 47. FAQ 3. ??? ??? TCP/IP?? ??? ??? ?????? 1.? Rogue ?DNS ?server ?: ? ??????? ??? ? ?? DNS??? ?? ??? ?? ??, ? ? ?? ???? ? ?? ??? ? ? ? ????. ? ? 2.? ??? hosts??? ??? ?? ?? ? ????. ?? ???? ?? ??? ??? ??? ??? ? ?? ??? ???? ?? ???(DNS ??) ? 3.? ???? ????? ?? ? 4.? TCP/IP ??? ??? ?? ? 5.? ????? ???????? TCP/IP? ?? ??? ?? ? 6.? ping ?¨Ca ? ?www.amazon.com ? or ? ?tracert ?www.ubuntu.org ? 7.? 3rd ?party ?trace ?tools ?: ?Tracetcp, ?Winmtr ?
  • 48. FAQ 4. EBS ??? ????? ??? ?? ??? 1.? EBS ??? ???? ??? EC2 ????? ???? ?? ? 2.? EBS-?©\opGmized ?EC2? ??? ?? ?? ???? ???? ??. ? ? ? 3. ??? ??? ?? ?? ???? ???? ??? ? ? Linux ?: ?iostat ?Output ?(h[p://blog.serverfault.com/2010/07/06/777852755/) ? ? ??? : ?Perfmon? ??? ??? ???? ?? ? h[p://blogs.technet.com/b/askcore/archive/2012/02/07/measuring-?©\disk-?©\latency-?©\with-?©\w indows-?©\performance-?©\monitor-?©\perfmon.aspx ? ? 4. ?AWS ?trusted ?advisor? ???? EBS??? ?? ??? ??? ?. ? ?
  • 50. Thank you! Seon Yong Park, AWS Solutions Architect seonpark@amazon.com