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Server Setup Guides

Nagios 4.4 setup on centos

Install Dev Tools, PHP, Nginx

  sudo yum install nginx php php-fpm php-common gcc glibc glibc-common gd gd-devel make net-snmp unzip -y
  sudo yum groupinstall 'Development Tools' -y

Nginx – Nagios Configuration

  cd /etc/nginx/conf.d
  sudo vi nagios.conf

Nginx - Nagios Configuration with P

...
20th Jan 2019

Nginx and Ajenti on ubuntu

Install Ajenti

apt-get update
wget http://repo.ajenti.org/debian/key -O- | apt-key add -
echo "deb http://repo.ajenti.org/ng/debian main main ubuntu" >> /etc/apt/sources.list
apt-get update
apt-get install ajenti
service ajenti restart

Install Ajenti-v

apt-get install ajenti-v ajenti...
20th Jan 2019

Nginx Load Balancing on RHEL 9

Nginx Load Balancing on RHEL 9

Round-robin (default)

upstream myapp {
    server 192.168.1.10:8080;
    server 192.168.1.11:8080;
    server 192.168.1.12:8080;
}
server {
    listen 80;
    server_name lb.example.com;
    location / { proxy_pass http://myapp; }
}

Least connections

upstream m...
7th May 2026

Nginx Rate Limiting on Arch Linux

Nginx Rate Limiting on Arch Linux

Define zones in http block

http {
    limit_req_zone $binary_remote_addr zone=api:10m     rate=10r/s;
    limit_req_zone $binary_remote_addr zone=login:10m   rate=5r/m;
}

Apply to locations

location /api/ {
    limit_req zone=api burst=20 nodelay;
    limi...
7th May 2026

Nginx Rate Limiting on RHEL 9

Nginx Rate Limiting on RHEL 9

Define zones in http block

http {
    limit_req_zone $binary_remote_addr zone=api:10m     rate=10r/s;
    limit_req_zone $binary_remote_addr zone=login:10m   rate=5r/m;
}

Apply to locations

location /api/ {
    limit_req zone=api burst=20 nodelay;
    limit_re...
7th May 2026