【AWS】【CloudWatch】【awscli】awscliでメモリ使用率80％以上になったらアラートを上げる設定を入れる

aws cloudwatch put-metric-alarm --alarm-name "MemoryUtilization80％" 
--namespace System / Linux \
--metric-name MemoryUtilization --dimensions "Name = InstanceId、Value 
= i-0219028c30d71bee2"-期間30​​0 \
--statistic Average --threshold 80 --comparison-operator 
GreaterThanOrEqualToThreshold¥
--evaluation-periods 1 --alarm-actions arn：aws：sns：ap-northeast-1：
697333814928：Default_CloudWatch_Alarms_Topic \
--ok-actions arn：aws：sns：ap-northeast-1：697333814928：Default_
CloudWatch_Alarms_Topic