Is it possible for DescribeInstances to return multiple instances when given instance ID filters?
If I pass an instance ID as a filter to DescribeInstances, is it ever possible to get multiple reservations or instances? I am checking to see if I can simplify my code to just access index 0 of reservations or instances returned rather than a for loop
amazon-web-services amazon-ec2 aws-sdk
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
add a comment |
If I pass an instance ID as a filter to DescribeInstances, is it ever possible to get multiple reservations or instances? I am checking to see if I can simplify my code to just access index 0 of reservations or instances returned rather than a for loop
amazon-web-services amazon-ec2 aws-sdk
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
You can't have more than 1 instance sharing the instance id.
– hjpotter92
Apr 30 '17 at 8:08
add a comment |
If I pass an instance ID as a filter to DescribeInstances, is it ever possible to get multiple reservations or instances? I am checking to see if I can simplify my code to just access index 0 of reservations or instances returned rather than a for loop
amazon-web-services amazon-ec2 aws-sdk
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
If I pass an instance ID as a filter to DescribeInstances, is it ever possible to get multiple reservations or instances? I am checking to see if I can simplify my code to just access index 0 of reservations or instances returned rather than a for loop
amazon-web-services amazon-ec2 aws-sdk
amazon-web-services amazon-ec2 aws-sdk
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
edited Nov 16 '18 at 11:22
Jesse de Bruijne
2,55161428
2,55161428
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
asked Apr 30 '17 at 7:41
Jiew MengJiew Meng
20.4k141379643
20.4k141379643
You can't have more than 1 instance sharing the instance id.
– hjpotter92
Apr 30 '17 at 8:08
add a comment |
You can't have more than 1 instance sharing the instance id.
– hjpotter92
Apr 30 '17 at 8:08
You can't have more than 1 instance sharing the instance id.
– hjpotter92
Apr 30 '17 at 8:08
You can't have more than 1 instance sharing the instance id.
– hjpotter92
Apr 30 '17 at 8:08
add a comment |
1 Answer
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No, you will always receive zero or one instance when you are filtering by an instance ID.
Instance IDs are unique and you'll never receive a duplicate id. (More information: Resource IDs Guide)
Even in cases that you have similar instance IDs for multiple instances, like i-abc123 and i-abc12345 when you query the API it will retrieve you the information of the instance that has exactly the same id of your filter.
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
add a comment |
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1 Answer
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1 Answer
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votes
No, you will always receive zero or one instance when you are filtering by an instance ID.
Instance IDs are unique and you'll never receive a duplicate id. (More information: Resource IDs Guide)
Even in cases that you have similar instance IDs for multiple instances, like i-abc123 and i-abc12345 when you query the API it will retrieve you the information of the instance that has exactly the same id of your filter.
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
add a comment |
No, you will always receive zero or one instance when you are filtering by an instance ID.
Instance IDs are unique and you'll never receive a duplicate id. (More information: Resource IDs Guide)
Even in cases that you have similar instance IDs for multiple instances, like i-abc123 and i-abc12345 when you query the API it will retrieve you the information of the instance that has exactly the same id of your filter.
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
add a comment |
No, you will always receive zero or one instance when you are filtering by an instance ID.
Instance IDs are unique and you'll never receive a duplicate id. (More information: Resource IDs Guide)
Even in cases that you have similar instance IDs for multiple instances, like i-abc123 and i-abc12345 when you query the API it will retrieve you the information of the instance that has exactly the same id of your filter.
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
No, you will always receive zero or one instance when you are filtering by an instance ID.
Instance IDs are unique and you'll never receive a duplicate id. (More information: Resource IDs Guide)
Even in cases that you have similar instance IDs for multiple instances, like i-abc123 and i-abc12345 when you query the API it will retrieve you the information of the instance that has exactly the same id of your filter.
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
answered Apr 30 '17 at 8:13
Bruno RubinBruno Rubin
33616
33616
add a comment |
add a comment |
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You can't have more than 1 instance sharing the instance id.
– hjpotter92
Apr 30 '17 at 8:08