course:amazon_aws:start [Questwork's Wiki]

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====== Amazon AWS ======

===== AWS Cli tools Installation =====

Reference: https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2.html

  * install AWS CLI version 2


===== AWS S3 commands =====

  * After installation, test the AWS commands


  * check your credentials

<code>
# aws configure list
</code>

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  * run the following command and enter the Access key and secret.
<code>
# aws configure
</code>

  * Enter the AWS Access Key ID and AWS Secret Access Key and leave other blank
    * AWS Access Key ID: ask your administrator
    * AWS Secret Access Key: ask your administrator
    * Default region name: Leave blank and Enter
    * Default output format: Leave blank and Enter

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  * check your credentials again to see if it is success
<code>
# aws configure list
</code>

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===== AWS S3 Sync commands =====

Reference: https://docs.aws.amazon.com/cli/latest/userguide/cli-services-s3-commands.html#using-s3-commands-managing-objects-sync

  * sync desired bucket by AWS S3 Sync command
<code>
# aws s3 sync source target
</code>


  * sync all files from a bucket to your local folder
    * create an empty folder e.g. apao2021
    * remember to put the source (s3 bucket) before your target (local folder)

<code>
# mkdir apao2021
# cd apao2021
# aws s3 sync s3://apao2021 .
</code>

  * By default, the sync command will DOWNLOAD all newly uploaded files to your local folder when you run it. So, you may run it regularly to download new file, if any.

<code>
# cd apao2021
# aws s3 sync s3://apao2021 .
</code>

<note tip>Please note that if you delete a file on your local folder, the next time you run the AWS S3 sync will download it again.</note>

===== Troubleshooting =====

<note warning>
fatal error: An error occurred (IllegalLocationConstraintException) when calling the ListObjectsV2 operation: The ap-east-1 location constraint is incompatible for the region specific endpoint this request was sent to.
</note>

If failed, try change the region to 'ap-east-1' by running the 'aws configure' again.

  * run the following command and enter the Access key and secret.
<code>
# aws configure
</code>

  * Enter the AWS Access Key ID and AWS Secret Access Key and leave other blank
    * AWS Access Key ID: ask your administrator
    * AWS Secret Access Key: ask your administrator
    * Default region name: input ap-east-1 and Enter
    * Default output format: Leave blank and Enter