life of a full stack wordpress developer
Glances is a free software (licensed under LGPL) to monitor your GNU/Linux or BSD operating system from a text interface.
Installation:
1 2 3 | sudo apt-get install python-pip build-essential python-dev sudo pip install Glances sudo pip install PySensors |
First thing to do when setting up a Ubuntu Server is to make sure it’s secure. Install fail2ban to make sure you block IP-addresses that try to break in, and log everything with logwatch.
Update the system.
1 2 | apt-get update apt-get upgrade |
Install fail2ban.
1 | apt-get install fail2ban |
Copy the configuration file.
1 | sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local |
Edit the file.
1 | sudo nano /etc/fail2ban/jail.local |
Change the ban time from 600 (10 minutes) to 604800 (7 days) and CTRL + O to save and CTRL + X to exit.
1 | bantime = 604800 |
Install logwatch.
1 | apt-get install logwatch |
Edit logwatch daily cron to email you the log.
1 | nano /etc/cron.daily/00logwatch |
Add this line at the bottom and replace the example email with your own. Save with CTRL + O and exit with CTRL + X.
1 | /usr/sbin/logwatch --output mail --mailto mail@example.com --detail high |
There are several ways to solve the problem of Apache running wild and killing MySQL. It the problem occurs very infrequently, there’s a easy way of restarting MySQL with the use of the crontab. The script even sends a notification email so you know what just happened.
First, SSH into your server:
1 | ssh root@server-ip |
Create a script file:
1 | nano mysqlfix.sh |
Paste the following:
1 2 3 4 5 6 7 | #!/bin/bash PATH=/usr/sbin:/usr/bin:/sbin:/bin if [[ ! "$(/usr/sbin/service mysql status)" =~ "start/running" ]] then echo "MySQL restarted for henriksson.me on Digital Ocean" | mail -s "MySQL restarted" markus@henriksson.me sudo service mysql start fi |
Press CTRL + O to save, and CTRL + X to exit.
Give execute permission to your script:
1 | chmod +x mysqlfix.sh |
Edit the Crontab:
1 | crontab -e |
Paste the following:
1 | * * * * * /root/mysqlfix.sh |
Press CTRL + O to save, and CTRL + X to exit.
To see if it works, type the following:
1 | service mysql stop |
In case the service doesn’t start, just start it manually with the following:
1 | service mysql start |