linux

A simple way to keep an eye on your VMs is by using Node Exporter, and Prometheus. These tools are free and open-source. Node Exporter as an agent works inside your VM, collecting data like CPU usage, memory, disk, and network then sending those metrics to Prometheus. Prometheus as datasource, collecting every metrics from every agent store and keep them within range of time that has been set. 1. Setup node exporter Make user for node exporter systemd service...

So, the repo that we will mirror is the whole focal repository from the official ubuntu Preparation Important: Make sure you have external disk with size minimum 500GB for the package 1. Install apt-mirror 1 2 3 4 # make sure you have an internet connection sudo apt update sudo apt install apt-mirror 2. Setup mirror.list 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 cd /etc/apt/ sudo nano mirror....

So this time i’ll make proxy with squid on alpine container with docker, just allowing http and https port and certain site (.btech.id and youtube.com). Let’s start! 1. Pull the base image of alpine 1 docker pull alpine 2. Create Dockerfile 1 2 3 4 5 6 7 8 9 10 FROM alpine RUN apk update RUN apk add squid openrc curl wget busybox nano COPY squid.conf /etc/squid/squid.conf COPY list....

Setup Database server 1. Install mariadb or mysql 1 apt install mysql-server -y 2. Configure mysql-server to bind 0.0.0.0 1 vim /etc/mysql/mysql.conf.d/mysqld.cnf => bind-address to 0.0.0.0 3. Create new user for wordpress 1 2 3 mysql -u root CREATE USER 'wp-user'@'%' IDENTIFIED BY 'gladiators88'; GRANT ALL PRIVILEGES ON *.* TO 'wp-user'@'%' WITH GRANT OPTION; GRANT ALL PRIVILEGES ON *.* TO 'wp-user'@'%'; Setup bind9 4. Install bind9 1 apt install bind9 5....

Topology: Loadbalancer Haproxy with keepalived as kube api server for the cluster, which provide High availability. The Loadbalancer machine gets virtual IP from keepalived to keep kube api server endpoints always availabilty, then the haproxy allow us to provide loadbalancing for each master node api server. Loadbalancer preparation 1. Setup haproxy on loadbalancer node 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 # do it on LB1 and LB2 # Update package and install haproxy apt update apt install haproxy -y # edit haproxy....