nothingOS

a personal reference in an open source, linux, microsoft, servers and networking. Compilation of solution once problem solve.

Letsencrypt : Generate Let’s Encrypt Wildcard SSL Certificate

1.Install Let’s Encrypt Certbot Tool #sudo apt-get OR dnf install letsencrypt 2.Generate Let’s Encrypt Wildcard SSL Certificate #sudo certbo...
Postfix : warning: inet_protocols: IPv6 support is disabled

Issue: : warning: inet_protocols: configuring for IPv4 support only : fatal: config variable inet_interfaces: host not found: localhost : ...
Prometheus and Grafana : Monitor MySQL/MariaDB

1.Install MySQL Exporter #curl -s https://api.github.com/repos/prometheus/mysqld_exporter/releases/latest | grep browser_download_url |...
MySQL: Repair table database of Nagios

Problems nagios error : ./nagios/nagios_servicechecks' is marked as crashed and should be repaired Solutions: #mysqlcheck -p --aut...
Centos 7 : Extending LVM Volume

1. Check the un-partition disk under Disk GUI on Centos 7 GUI 2. Create and format disk #fdisk -l #fdisk -l /dev/sda3 - to format the ...

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