EC2 Instance Metadata.

Amazon EC2 instances can access instance-specific metadata, as well as data supplied when launching the instances, using a specific URI.

You can use this data to build more generic AMIs that can be modified by configuration files supplied at launch time. For example, if you run web servers for various small businesses, they can all use the same AMI and retrieve their content from the Amazon S3 bucket you specify at launch. To add a new customer at any time, simply create a bucket for the customer, add their content, and launch your AMI.

More information about EC2 Metadata

EC2Metadata Class Documentation
コード例 #1
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ファイル: EC2Metadata.cs プロジェクト: virush13/aws-sdk-net 
        private IEnumerable <string> GetItems(string key)
        {
            if (null == _availableKeys)
            {
                _availableKeys = EC2Metadata.GetItems(_path);
            }

            if (_availableKeys.Contains(key))
            {
                return(EC2Metadata.GetItems(_path + key));
            }
            else
            {
                return(new List <string>());
            }
        }
コード例 #2
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ファイル: EC2Metadata.cs プロジェクト: virush13/aws-sdk-net 
        private string GetData(string key)
        {
            if (_data.ContainsKey(key))
            {
                return(_data[key]);
            }

            // Since the keys are variable, cache a list of which ones are available
            // to prevent unnecessary trips to the service.
            if (null == _availableKeys)
            {
                _availableKeys = EC2Metadata.GetItems(_path);
            }

            if (_availableKeys.Contains(key))
            {
                _data[key] = EC2Metadata.GetData(_path + key);
                return(_data[key]);
            }
            else
            {
                return(null);
            }
        }
コード例 #3
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ファイル: EC2Metadata.cs プロジェクト: virush13/aws-sdk-net 
 /// <summary>
 /// Get the private IPv4 address(es) that are associated with the public-ip address and assigned to that interface.
 /// </summary>
 /// <param name="publicIp">The public IP address</param>
 /// <returns>Private IPv4 address(es) associated with the public IP address</returns>
 public IEnumerable <string> GetIpV4Association(string publicIp)
 {
     return(EC2Metadata.GetItems(string.Format(CultureInfo.InvariantCulture, "{0}ipv4-associations/{1}", _path, publicIp)));
 }
コード例 #4
0
 /// <summary>
 /// Get the private IPv4 address(es) that are associated with the public-ip address and assigned to that interface.
 /// </summary>
 /// <param name="publicIp">The public IP address</param>
 /// <returns>Private IPv4 address(es) associated with the public IP address</returns>
 public IEnumerable <string> GetIpV4Association(string publicIp)
 {
     return(EC2Metadata.GetItems(String.Format("{0}ipv4-associations/{1}", _path, publicIp)));
 }