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1.æåã«ãåç
§ã€ã³ã¹ã¿ã³ã¹ããç»åãåé€ããŸã
ãããè¡ãæãéãæ¹æ³ã¯ãAWS管çã³ã³ãœãŒã«ã䜿çšããããšã§ãã Webã€ã³ã¿ãŒãã§ãŒã¹çµç±ã ãããè¡ãã«ã¯ãELASTIC BLOCK STORE-> Snapshotsã¡ãã¥ãŒé
ç®ã«ç§»åããããã³ããšã³ãããªã¥ãŒã ããæ°ããã¹ãããã·ã§ãããäœæããŸãã æ¬¡ã«ãçµæã®ã€ã¡ãŒãžãå³ã¯ãªãã¯ãããã¹ãããã·ã§ããããã€ã¡ãŒãžãäœæãé
ç®ãéžæããŠãããã«ã¯ããŒã³ãäœæããããã®ã€ã¡ãŒãžïŒããããAMIïŒãååŸããŸãã AMIãäœæãããšãã¯ãæ£ããïŒåç
§ã€ã³ã¹ã¿ã³ã¹ãšåãïŒã«ãŒãã«èå¥åïŒã«ãŒãã«IDïŒãæå®ããããšãéèŠã§ããããããªããšãAMIãåã«èµ·åããªãå¯èœæ§ããããŸãã
2.ãã©ã³ãµãŒãšèªåã¹ã±ãŒãªã³ã°ã®äœ¿çšã«å¿
èŠãªããŒã«ãã€ã³ã¹ããŒã«ããŸã
å®éã«ã¯ã絶察ã«ä»»æã®ã³ã³ãã¥ãŒã¿ãŒãããã¡ãŒã ã管çã§ããŸããUbuntuãæèŒãããµãŒããŒã®1ã€ãéžæããããããã®OSå°çšã®èšå®äŸã瀺ããŸãã
2.1ã java ïŒãŸã ã€ã³ã¹ããŒã«ãããŠããªãå ŽåïŒãå
¥ããŠãç°å¢å€æ°JAVA_HOMEãæžã蟌ã¿ãŸã
apt-get install default-jdk
/ etc / environmentã«è¡ã远å ããŸãïŒãã®å ŽåïŒ
JAVA_HOME="/usr/lib/jvm/java-6-openjdk"
次ã«ãAmazonããŒã«ããããé
眮ããŸãã / optãã£ã¬ã¯ããªã«é
眮ããã·ã³ããªãã¯ãªã³ã¯ãäœæããŠãå°æ¥å¿
èŠãªãã©ã«ããèŠã€ããããããŸãããããã¯ãã¡ãã奜ã¿ã®åé¡ã§ãã
2.2ã ãã©ã³ãµãŒã®ã»ããã¢ããã«AmazonããŒã«ãããã䜿çšããŸã
wget http://ec2-downloads.s3.amazonaws.com/ElasticLoadBalancing.zip unzip ElasticLoadBalancing.zip mv ElasticLoadBalancing-1.0.15.1 /opt/ ln -s /opt/ElasticLoadBalancing-1.0.15.1 /opt/ELB
ç°å¢å€æ°ã远å ããŸãïŒ/ etc / environmentãç·šéããŠãããè¡ããŸãïŒ
ãã¹ã/ opt / ELBïŒ/ opt / ELB / binããPATH倿°ã«è¿œå ããå¿
èŠããããŸã
ããã«AWS_ELB_HOME倿°ã远å ããŸãã
AWS_ELB_HOME="/opt/ELB"
ãã¡ã€ã«/ opt / ELB / credential-fileãäœæããŸããããã§ãAWSè³æ Œæ
å ±ãç»é²ããå ŽæïŒäžæãªå Žå-AWS管çã³ã³ãœãŒã«->ã»ãã¥ãªãã£è³æ Œæ
å ±ãåç
§ïŒã次ã®åœ¢åŒã§äœæããŸãã
AWSAccessKeyId=xxx AWSSecretKey=xxx
chmod 600 /opt/ELB/credential-file
AWS_CREDENTIAL_FILE倿°ã/ etc / environmentã«è¿œå ããŸãã
AWS_CREDENTIAL_FILE="/opt/ELB/credential-file"
2.3ã Amazonã®èªåã¹ã±ãŒãªã³ã°ããŒã«ããããã€ã³ã¹ããŒã«ããŸã
wget http://ec2-downloads.s3.amazonaws.com/AutoScaling-2011-01-01.zip unzip AutoScaling-2011-01-01.zip mv AutoScaling-1.0.39.0 /opt/ ln -s /opt/AutoScaling-1.0.39.0/ /opt/AS
ç°å¢å€æ°ã/ etc / environmentã«è¿œå -ãã¹ã/ opt / ASïŒ/ opt / AS / binããPATH倿°ã«è¿œå ããå¿
èŠããããŸã
ããã«AWS_AUTO_SCALING_HOME倿°ã远å ããŸãã
AWS_AUTO_SCALING_HOME="/opt/AS"
2.4ã Amazonã®ç£èŠããŒã«ãã€ã³ã¹ããŒã«ããŸãã
wget http://ec2-downloads.s3.amazonaws.com/CloudWatch-2010-08-01.zip unzip CloudWatch-2010-08-01.zip mv CloudWatch-1.0.12.1 /opt/ ln -s /opt/CloudWatch-1.0.12.1/ /opt/CW
ç°å¢å€æ°ã/ etc / environmentã«è¿œå ããŸã-ãã¹ã/ opt / CWïŒ/ opt / CW / binããPATH倿°ã«è¿œå ããå¿
èŠããããŸã
ããã«AWS_CLOUDWATCH_HOME倿°ã远å ããŸãã
AWS_CLOUDWATCH_HOME="/opt/CW"
2.5ã ã€ã³ã¹ããŒã«ãããŠããããŒã«ã確èªãã
/ etc /ç°å¢ã«èšå®ããã倿°ã確èªããã«ã¯ããã°ã€ã³ããããä»ã®æ¹æ³ã§ããããèªã¿åãããšãã§ããŸãã
ã³ãã³ããæäŸããŸãïŒ
elb-cmd --help
as-cmd
mon-cmd --help
ãããããèšŒææžãçºè¡ããããã€ã³ã¹ããŒã«äžã«ãšã©ãŒãçºçããå Žåã¯ããããããã€ã³ãããŸãã
3.è¡ããŸãããã å®éã«èªåã¹ã±ãŒãªã³ã°ã§ããŒããã©ã³ãµãŒãèšå®ãã
3.1ã ãã©ã³ãµãŒãäœæãã
elb-create-lb myLB
myLBã¯ãã©ã³ãµãŒã®ååã§ã
--listenerâ lb-port = 80ãinstance-port = 80ãprotocol = httpâ-ããŒã80ããªãã¹ã³ããã¿ãŒã²ããã€ã³ã¹ã¿ã³ã¹ã®ãã©ãã£ãã¯ãããŒã80ã«è»¢éããhttpãããã³ã«ã䜿çšããŸã
-ãã©ã³ãµãŒãåŒãäžããããå°åus-west-1å°å
--availability-zones us-west-1cãã©ã³ãµãŒãäžãããŸãŒã³
å¿çãšããŠã次ã®ãããªãã®ãåŸãããŸãã
DNS_NAME DNS_NAME DNS_NAME myLB-108660279.us-west-1.elb.amazonaws.com
ããã¯ãå°æ¥ã®ãã©ã³ãµãŒã®ã¢ãã¬ã¹ã§ã
3.2ã ãã©ã³ãµãŒã®æ€èšŒãã¹ããäœæããŸã ïŒãã«ã¹ãã§ãã¯ïŒ
ããã¯ãã¿ãŒã²ããã€ã³ã¹ã¿ã³ã¹ããã§ã«é«è² è·ã§ããããã©ãã£ãã¯ã次ã®ã€ã³ã¹ã¿ã³ã¹ã«è»¢éããããšããã©ã³ãµãŒãçè§£ãããã¹ãã®ãããã§ãã
elb-configure-healthcheck myLB --headers --target "HTTP:80/" --interval 30 --timeout 10 --unhealthy-threshold 2 --healthy-threshold 2 --region us-west-1
myLBã¯ãã©ã³ãµãŒã®ååã§ã
--headers-ãã®ãã«ã¹ãã§ãã¯ã®èª¬æã«ãã£ãŒã«ãåã®è¡šç€ºãå«ããªãã·ã§ã³ã®ãã©ã¡ãŒã¿ãŒ
--target "HTTPïŒ80 /"-ãããã³ã«ïŒããŒã/ãã§ãã¯ããURI
--interval 30-ééã確èªããŸãïŒ30ç§ããšã«1å確èªããŸãïŒ
--timeout 10-ã¿ã€ã ã¢ãŠããè¶
éããå Žå-ã€ã³ã¹ã¿ã³ã¹ã¯ããªãæªãæã
--unhealthy-threshold 2-ã€ã³ã¹ã¿ã³ã¹ãæ£åžžã§ãªãããšãæçµçã«ç¢ºèªããåã«å®è¡ãããã§ãã¯ã®æ°
--healthy-threshold 2-ã€ã³ã¹ã¿ã³ã¹ããŸã æ£åžžã§ããããšãæçµçã«ç¢ºèªããåã«è¡ããã§ãã¯ã®æ°
--region us-west-1-宿æ³å°å
ã³ãã³ããæ£åžžã«å®äºãããšã次ã®ãããªã¡ãã»ãŒãžã衚瀺ãããŸãã
HEALTH_CHECK TARGET INTERVAL TIMEOUT HEALTHY_THRESHOLD UNHEALTHY_THRESHOLD HEALTH_CHECK HTTP:80/index.html 30 10 2 2
3.3ã èªåã¹ã±ãŒãªã³ã°æã«æ°ããã€ã³ã¹ã¿ã³ã¹ãéå§ããæ§æãäœæããŸã
as-create-launch-config myAS --image-id ami-fd015fb8 --kernel aki-9ba0f1de --key ubuntu --group ubuntu-new --region us-west-1 --instance-type m1.xlarge
myASã¯æ§æåã§ã
--image-id XXX-ã¹ããã1ã§äœæãããã€ã³ãã¬ãã·ã§ã³IDïŒAMIïŒ
--kernel XXX-ã¹ããã1ã§äœæãããAMIã®ã«ãŒãã«ID
--key XXX-ãã¹ããŒã®åå
--group XXX-ã»ãã¥ãªãã£ã°ã«ãŒãã®åå-ãã®ã€ã³ã¹ã¿ã³ã¹ã«ã¢ã¯ã»ã¹ããããã®ãã¡ã€ã¢ãŠã©ãŒã«ã«ãŒã«ã®ã»ãã
--instance-type XXX-éå§ããã€ã³ã¹ã¿ã³ã¹ã®ã¿ã€ã
--region us-west-1-å°å
æ§æãæ£åžžã«äœæãããå Žåãæ¬¡ã®çµè«ãåŸãããŸãã
OK-Created launch config
3.4ã èªåã¹ã±ãŒãªã³ã°äžã®ãµãŒããŒããŒã«ã®ããããã£ã説æããããŒã«ããã©ã³ãµãŒã«ãã€ã³ãããŸã
as-create-auto-scaling-group myASG --launch-configuration myAS --availability-zones us-west-1c --min-size 1 --max-size 20 --load-balancers myLB --grace-period 500 --health-check-type ELB --region us-west-1
myASGã¯ããŒã«ã®ååã§ã
--launch-configuration myAS-åã®ã¹ãããããéå§ããæ§æã®åå
--min-size 1-æå°ããŒã«ãµã€ãº
--max-size 20-æå€§ããŒã«ãµã€ãº
--load-balancers myLB-ãã©ã³ãµãŒãžã®ãã€ã³ã
--grace-period 300ã¯ãæ°ããã€ã³ã¹ã¿ã³ã¹ã®éå§åŸããã®ã€ã³ã¹ã¿ã³ã¹ã«è² è·ãé©çšã§ããç§æ°ã瀺ãéèŠãªãã©ã¡ãŒã¿ãŒã§ãã ããšãã°ãéå§åŸãã¢ããªã±ãŒã·ã§ã³ã¯ç§ã«ãããã€ãããããããã®æéã¯éåžžã«é·ããªããŸã
--health-check-type ELB-ã¿ã€ãhealthchekããã®å Žå-Elastic Load Balancer
--region us-west-1-宿æ³å°å
--availability-zones us-west-1c-ãŸãŒã³
3.5ã ããŒã«æé·ããªã·ãŒã«ã€ããŠèª¬æããŸã
as-put-scaling-policy myUp-policy -auto-scaling-group myASG
myUp-policyã¯ããªã·ãŒã®ååã§ã
-auto-scaling-group myASG-ããªã·ãŒãå±ãããµãŒããŒããŒã«ã®åå
--type ChangeInCapacity-ããªã·ãŒã®ã¿ã€ãã ãã®å ŽåãããŒã«ãµãŒããŒã®æ°ã®çµ¶å¯Ÿçãªå€æŽã ãŸããExactCapacityïŒæ°ããããŒã«ãµã€ãºã®æ£ç¢ºãªå€ïŒãPercentChangeInCapacityïŒããŒã«ãµã€ãºã®å€æŽã®çŸåšã®å€ã®å²åïŒã®å€ãåãããšãã§ããŸãã
--adjustment = 1-ãã®å ŽåãããŒã«ã«1ã€ã®ãµãŒããŒã远å ããŸã
--cooldown 600-次ã®ããŒã«ãµã€ãºã倿ŽããããŸã§ã®ã¿ã€ã ã¢ãŠãã åã®æé ã§æå®ãããç¶äºæéãã©ã¡ãŒã¿ãŒïŒå°ãªããšããã以äžïŒãšåççã«çžé¢ããå¿
èŠããããŸãã
-å°åus-west-1å°å
ããã«å¿ããŠã次ã®ãããªè¡ãååŸããŸã-ãã®ããªã·ãŒã®èšè¿°åã
arn:aws:autoscaling:us-west-1:033313991904:scalingPolicy:5ae9e75d-4344-4b3f-abb0-c501c7221ecf:autoScalingGroupName/myASG:policyName/myUp-policy
3.6ã ããŒã«æé·ããªã·ãŒããã©ã³ãµãŒç£èŠã«çµã³ä»ããŸã
mon-put-metric-alarm MyHighLatAlarm --metric-name Latency --comparison-operator GreaterThanThreshold --evaluation-periods 1 --namespace "AWS/ELB" --period 60 --statistic Average --threshold 80 --alarm-actions arn:aws:autoscaling:us-west-1:033313991904:scalingPolicy:5ae9e75d-4344-4b3f-abb0-c501c7221ecf:autoScalingGroupName/myASG:policyName/myUp-policy --dimensions "LoadBalancerName=myELB"--unit Seconds --region us-west-1
MyHighLatAlarmã¯ãã€ã³ãã£ã³ã°ã®ååã§ã
--metric-nameã¬ã€ãã³ã·ã¯éèŠãªãã©ã¡ãŒã¿ãŒã§ãã ãã©ã³ãµãŒã®å®éã®é
å»¶ãæž¬å®ããããšã瀺ããŸãã ãã®ã¡ããªãã¯ã¯ããã©ã³ãµãŒãèªåçã«äœæããããšãã«äœæãããŸããã ïŒmon-list-metricsã³ãã³ãã®åºåã確èªããããšã§ç¢ºèªã§ããŸãïŒã
--comparison-operator GreaterThanThreshold-æ¯èŒæŒç®åïŒãã®å Žåã¯ããããå€ãã倧ãããïŒã¯ããGreaterThanOrEqualToThresholdãããLessThanThresholdããããã³ãLessThanOrEqualToThresholdãã«ããããšãã§ããŸã
--evaluation-periods 1-ãããå€ãšæ¯èŒããåã«ã¡ããªãã¯ããã§ãã¯ããåæ°
--namespace "AWS / EC2"-åå空éïŒå¿
é ãã©ã¡ãŒã¿ãŒãæç¢ºã§ãªãçç±ïŒ
-æé60èª¿æ»æé
--statistic Average-ãããå€ã®æž¬å®æ¹æ³ã ãã®å Žåãå¹³åãããã³ãSampleCountãããSumãããMinimumãããMaximumã
--threshold 80-å®éã®ãããå€é
å»¶å€ã
--alarm-actions arnïŒawsïŒautoscalingïŒus-west-1ïŒ033313991904ïŒscalingPolicyïŒ5ae9e75d-4344-4b3f-abb0-c501c7221ecfïŒautoScalingGroupName / myASGïŒpolicyName / myUp-policy-ãããå€ã«éãããšå®è¡ãããšèšããŸãåã®ã¹ãããã§äœæãããã®èšè¿°åã«ãã£ãŠèšè¿°ãããŸãã
--dimensionsâ LoadBalancerName = myLBâ-ãã®å±æ§ã®ã¢ã©ãŒã ããã£ã«ã¿ãŒããŸãã
--unitç§-åäœ
--region us-west-1-ãã±ãŒã·ã§ã³ã®å°åã
ãã ããã§ãäžåºŠã«1å°ã®ãµãŒããŒã远å ããããšã§è² è·ã«å¿çããããŒã«ãã§ããŸããã ãã ããè² è·ã®æžå°ã«å¿ããŠããŒã«ããåçž®ããããŸãã ãããè¡ãã«ã¯ãããŒã«ãåæžããããªã·ãŒã説æããããããã©ã³ãµãŒã¡ããªãã¯ã«ãã€ã³ãããå¿
èŠããããŸãã 詳现ã¯ç¹°ãè¿ããŸããããæ§æãããã¹ãŠãæãããªããã§ãïŒ
3.7ã ããŒã«ãåæžããããªã·ãŒã«ã€ããŠèª¬æããŸã
as-put-scaling-policy myScaleDown-policy
ããªã·ãŒèšè¿°åãååŸããŸãã
arn:aws:autoscaling:us-west-1:033313991904:scalingPolicy:a764b4d4-aff5-4061-ba3a-c35c05ad1d25:autoScalingGroupName/myASG:policyName/myScaleDown-policy
3.8ã ããŒã«ãåæžãããšããããªã·ãŒããã©ã³ãµãŒã®ç£èŠã«çµã³ä»ããŸã
mon-put-metric-alarm MyLowLatAlarm --comparison-operator LessThanThreshold --evaluation-periods 1 --metric-name Latency --namespace "AWS/EC2" --period 600 --statistic Average --threshold 20 --alarm-actions arn:aws:autoscaling:us-west-1:033313991904:scalingPolicy:a764b4d4-aff5-4061-ba3a-c35c05ad1d25:autoScalingGroupName/myASG:policyName/myScaleDown-policy ---dimensions "LoadBalancerName=myLB" --unit Seconds --region us-west-1
4. ãã©ã³ãµãŒã«ååãšãããã³ã§ã¢ããŒã«ããŸã
ãã ããã§ãã¹ããã3.1ã§ååŸãããããªãã¯DNSåã§ãã©ã³ãµãŒã«é£çµ¡ããããšã§ããã®å
šäœããã¹ãã§ããŸãããã®å Žåã
myLB-108660279.us-west-1.elb.amazonaws.com次ã«ããµã€ãã®ãã¡ã€ã³ã®ãã®ååã瀺ãã¿ã€ãCNAMEã®DNSã¬ã³ãŒããäœæããããšããå§ãããŸãã
www.site.com IN CNAME myLB-108660279.us-west-1.elb.amazonaws.com
ãã®åŸã
www.site.comãåç
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mon-describe-alarms
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mon-delete-alarms --region us-west-1 --alarm-name MyHighLatAlarm mon-delete-alarms --region us-west-1 --alarm-name MyLowLatAlarm
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as-describe-policies
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as-delete-policy myScaleDown-policy
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as-update-auto-scaling-group myASG --min-size 0 --max-size 0 --region us-west-1
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as-delete-auto-scaling-group myASG
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as-delete-launch-config myAS
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elb-delete-lb myLB