[Babel-users] ddns with linode

[Dave Taht]

I currently get my ddns from linode. It's a huge pita, because you have
to mentally parse the javascript to find the unique identifiers for each
dns entry. I may try to switch to bind9 and stick it on a subdomain, but
even then a good parse of ip -6 addr is needed.

#!/bin/sh

login=noneofyourbusiness
pass=keepout
key=the_key_you_have_to_get_when_creating a login
domain=759244 # teklibre.com
resourceid=11054923 # ceres is this machine
device=enp7s0 # not strictly needed unless you have firewall issues

# useful regex for finding your first valid public address


address=$(ip -6 addr list scope global $device | grep -v " fd" | sed -n 's/.*inet6 \([0-9a-f:]\+\).*/\1/p' | head -n 1)

# You have to create one resource id PER host via their web interface first....
# nosql strikes again
# first find the domain id, mentally parsing the javascript
# curl "https://api.linode.com/?api_key=$key&api_action=domain.list"
# Then, based on that, find the resource id

# curl "https://api.linode.com/?api_key=$key&api_action=domain.resource.list&domainid=$domain"

# And then, after you've gone through all that hell to find out these ids, you have global ddns for
# one ipv6 address on that one machine

curl "https://api.linode.com/?api_key=$key&api_action=domain.resource.update&domainid=$domain&resourceid=$resourceid&target=$address" > /dev/null


# Put something like this in cron - it would be better, IMHO, to just
# listen for new addresses via ip mon? or...
# 3 */30 * * * * /bin/echo `/bin/date`: `curl
# "https://api.linode.com/?api_key=$key&api_action=domain.resource.update&domainid=$domain&resourceid=$resourceid&target=$address"
# > /dev/null`

# and dont' forget to also keep your certs updated