Entries from May 2020

How To Prevent Automatic HTML Line Breaks

Author: , May 14th, 2020

Recently, I had a list of command-line options in a table, and my browser was automatically inserting a line-break in-between the hyphen and the option character.

To prevent this, I simply added a little CSS:

NOTE: Never use the

HTML directive – it is obsolete!

How To Change the Destination Admin Email Address for User-Meta Pro Notifications

Author: , May 11th, 2020

Snow in May!

Author: , May 9th, 2020

How To Empty the Cache in Prometheus Using Curl

Author: , May 7th, 2020

I wanted to empty the time series data cache from the Prometheus server to start clean. The best practice is to use the administrative HTTP API via curl. For example, to clear all data for job mysqld as defined in the prometheus.yml configuration file:

If you want to delete ALL data from Prometheus, then […]

First Hummingbird Sighting!

Author: , May 6th, 2020

How To Upgrade Certbot, Python and PIP on AWS Linux 1

Author: , May 6th, 2020

I ran letsencrypt-auto renew and got the following error:

The solution in this article gave me the answer:

Turns out Python was old at version 2.7, so did the following also:

Also had to change the cron job script to call certbot directly instead of letsencrypt-auto : vi /root/letsencrypt-cron.sh