Monday, December 16, 2019

AWS CLI describe-instances? Or describe-network interfaces

Using AWS CLI including explanation 


Que) sort output of describe-instances? Or describe-network interfaces ? 


Ex: aws ec2 describe-network-interfaces --region
us-east-1 --filters "Name=tag:Name,Values='Name_any*'
"  --query 'NetworkInterfaces[?Status==`available`]'


Now to take exact things out first flatten
o/p in bracket like structure as below


# aws ec2 describe-network-interfaces --region
us-east-1 --filters "Name=tag:Name,Values='Nameofinstance*'"  --query 'NetworkInterfaces[?Status==`available`].[NetworkInterfaceId,TagSet[*].Value | [0].Value]'


o/p
[
    [
        "eni-########",
        null
    ],
    [
        "eni-########",
        null
    ],
    [
        "eni-########",
        null
    ],
    [
        "eni-########",
        null
    ]
]


In above o/p eni is first column and null is 2nd
Will print 1st column using jmes path using sort_by 
Syntax [] | sort_by(@, &[3])

#aws ec2 describe-network-interfaces
--region us-east-1 --filters
"Name=tag:Name,Values='Nameofinstance*'"
--query 'NetworkInterfaces[?Status==
`available`].[NetworkInterfaceId,TagSet[*]
.Value | [0]] | sort_by(@, &[1])'

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