每個AWS的EC2 instance都會有一個Public IP address,不過這個Public IP address會隨著你重新啟動你的instance而更改,也就是說那個Public IP address是DHCP自動assign的,所以如果你要在EC2裡host你的伺服器,好比如網頁,那你就必須申請一個Elastic IP address,這個IP address是不會隨著你重新啟動instance而改變,要注意的是這個Elastic IP address是必須要associate給你的一個instance,如果你沒有associate你的instance的話,那麼Amazon就會以小時計算來跟你算錢,畢竟IPv4已經是很珍貴了.
Manchester UK Apple Store expanding to larger premises
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For its 20th anniversary, Apple Trafford Center is to close down and reopen
in a larger and more prominent part of the same mall.
[image: Bright, modern el...
10 分鐘前
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