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Update Pingdom IP ranges

NOTE This process only applies to Carrenza environments.

The “Check_Pingdom_IP_Ranges” Jenkins job runs daily and checks whether the IP addresses we have stored for Pingdom match the ones they are actually using.

If this task fails, it is an indicator that our IPs are not consistent with the ones they are using and we need to update our rules.

Edit the carrenza_mirror_vars.yaml file in the govuk_mirror-deployment. There is a command in the comments of that file that will generate a new list of IP addresses in YAML format.

To check the IP addresses from your own machine, clone the govuk_mirror-deployment and run ruby tools/pingdom_ips.rb.

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