Identifying the running linode
It is possible to identify the running linode by its ID from /etc/network/interfaces as generated by Linode Network Helper.
e.g.
linode_id="$(grep 'https://cloud.linode.com/linodes/' /etc/network/interfaces | grep -E -o '[0-9]+')"
However this could eaasily be broken by a change to the Linode Network Helper.
Is there a better, safer way?
2 Replies
Take a look at the Linode API: https://techdocs.akamai.com/linode-api/reference/get-linode-instances
Take a look at the Linode API
This is an issue I’ve tried to figure out in the past too. The API is the best way to retrieve details about your Linodes - but what you need is a way to identify the Linode on which code/script is running.
The only way I can think is comparing the primary IP of eth0 with the public IP given in the API results, and working out it that’s the one you want - e.g. by tag or name/label.
I have heard rumours of a metadata service which would allow a Linode to query information about itself, so it could probably find out it’s own ID, but I don’t know where this is up to on Linode’s plans.