Working with Meta-data
- In previous Lab 4.11, we created an instance with user-data or bash script to install apache server over it
- Now to check what bootstrap script was passed into the instance we can run command in Linux instance, command:
curl http://169.254.169.254/latest/user-data
- This command will return the script which passed into it during boot-up:
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- Similarly,with help on meta-data command we can find instance details such as:
ami-id ami-launch-index ami-manifest-path block-device-mapping/ events/ hostname instance-action instance-id instance-type local-hostname local-ipv4 mac metrics/ network/ placement/ profile public-hostname public-ipv4 public-keys/ reservation-id security-groups services/
- For running meta-data command, we need to run[code]curl http://169.254.169.254/latest/meta-data/parameter you wanna find[/code]
- For example, I wanna find sercurity group of this instance, meta-data command would be
curl http://169.254.169.254/latest/meta-data/security-groups
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- That’s it for this Lab, don’t delete the instance we need it in this lab
