Moving HTTPD From One Machine to Another

Introduction

Here are instructions on how to migrate HTTPD functions to another machine. Main example is migrating from CentOS 7 to Rocky Linux 8 (vav to vav2)

Instructions

1. Install these packages

    dnf install -y webalizer httpd certbot python3-certbot-apache mod_limitipconn

2. Enable http and https ports

   firewall-cmd --permanent --add-service={http,https}
   firewall-cmd --reload

3. Copy these files from old to new machine
   • /etc/httpd/conf.d/*
   • /var/www/html/index.html
   • /etc/webalizer.d/*
   • /etc/letsencrypt
   • /root/UCSF_SSL_CERT
   • /var/log/httpd/*
   • /var/lib/webalizer/
   • /var/www/usage/
4. Turn off TraceEnable in httpd.conf in new machine

   echo "TraceEnable off" >> /etc/httpd/conf/httpd.conf

5. Add httpd logs to logrotate configuration file
   • vim /etc/logrotate.d/httpd
   • Delete everything inside and replace with:

   /var/log/httpd/*log {
       missingok
       notifempty
       sharedscripts
       delaycompress
       postrotate
           /bin/systemctl reload httpd.service > /dev/null 2>/dev/null || true
       endscript
   }
   
   /var/log/httpd/*/*log {
       missingok
       notifempty
       sharedscripts
       delaycompress
       postrotate
           /bin/systemctl reload httpd.service > /dev/null 2>/dev/null || true
       endscript
   }

6. Add these jobs to cron

   0 0 * * * /bin/certbot renew
   0 6 * * SAT /etc/webalizer.d/cronwebalizer.csh

7. Change selinux from enforce to permissive
   • setenforce 0
   • vim /etc/selinux/config

   SELINUX=permissive

   • Check with "sestatus". Make sure these two below are permissive

   Current mode:                   permissive
   Mode from config file:          permissive

8. Check httpd and resolve any config errors. If no errors, then restart httpd

    systemctl restart httpd

9. Move Public IP Ethernet Cord from old to new machine. Then test. Goodluck.