nickgravel

You were updating some *nix firewall rules or network configs over a remote connection and changed the wrong setting. Oops, now you’re locked out and feeling helpless.

Next time, follow the steps below to undo your network mistakes and avoid getting locked out permanently. The example commands illustrate how you’d recover from fucking-up a sshd_config change.

1. Backup Your Config(s)

Upon connecting to the remote server, immediately make a backup of the file(s) you need to modify.

cp /etc/ssh/sshd_config /etc/ssh/sshd_config.old

nickgravel

MYDOMAIN.com {
  encode gzip
  reverse_proxy 127.0.0.1:3333 {
    health_uri /health
    lb_try_duration 30s
  }
}

nickgravel

Running your own encrypted chat service with Matrix and Riot

Workshop Instructor:

• Lilly Ryan @attacus_au

This workshop is distributed under a CC BY-SA 4.0 license.

What are we doing here?

The goal of this workshop is to teach you how to configure and run your own Matrix/Riot service. By the end of the workshop, you should be able to log into secure chat rooms and invite others to the same server.

nickgravel

<IfModule mod_expires.c>
    ExpiresActive on
    ExpiresDefault                                      "access plus 1 month"

  # CSS
    ExpiresByType text/css                              "access plus 1 year"

  # Data interchange
    ExpiresByType application/json                      "access plus 0 seconds"
    ExpiresByType application/ld+json                   "access plus 0 seconds"

nickgravel

Keybase proof

I hereby claim:

• I am nickgravel on github.
• I am nickgravel (https://keybase.io/nickgravel) on keybase.
• I have a public key whose fingerprint is CF9D EFCE D85C C190 70A2 BB69 1652 CE79 7874 7875

To claim this, I am signing this object:

nickgravel

-- Here’s a handy script to list your MySQL table sizes in MB.  
SET @table_schema = '{YOUR_SCHEMA_NAME}'; -- replace with your schema name

SELECT table_name AS "Tables", 
ROUND(((data_length + index_length) / 1024 / 1024), 2) "Size in MB" 
FROM information_schema.TABLES 
WHERE table_schema = @table_schema
ORDER BY (data_length + index_length) DESC;

nickgravel

#!/bin/bash   

if [ -n "$1" ]
then
  FILENAME=$1
else  
  echo "Please specify a filename. e.g. ./gencsr www.example.com" >&2
  exit 1
fi