I’ve been busy attempting to install Nagios 4 on a fresh install of CentOS 7 on a Hyper V machine. I’ve tried this install now at least 6 times failing with different errors every single time and even resorted to Nagios for help.
The Orange text are commands to input into CentOS. I used a minimal install of CentOS.
The first problem I always ran into is that CentOS wasn’t online. I took these steps to resolve it then I ran the commands below
yum install wget yum install nano
Net tools isn’t required but I find it useful for troubleshooting network issues so I installed it anyways.
yum install net-tools
If installing on a Raspberry PI , I found I had to install these tools as well.
yum install wzip yum install make
setenforce 0 nano /etc/selinux/config
change enforcing -> disabled, save and close.
yum install httpd php php-cli gcc glibc glibc-common gd gd-devel net-snmp openssl-devel wget unzip -y
useradd nagios groupadd nagcmd usermod -a -G nagcmd nagios usermod -a -G nagcmd apache
DOWNLOAD & INSTALL NAGIOS:
cd /tmp wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.1.1.tar.gz wget http://www.nagios-plugins.org/download/nagios-plugins-2.1.1.tar.gz tar zxf nagios-4.1.1.tar.gz tar zxf nagios-plugins-2.1.1.tar.gz cd nagios-4.1.1 ./configure --with-command-group=nagcmd make all make install make install-init make install-config make install-commandmode make install-webconf htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin service httpd start service nagios start
cd /tmp/nagios-plugins-2.1.1 ./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-openssl make all make install service nagios restart
Can’t access web page? Check firewalld and at port 80 through.
firewall-cmd –zone=public –add-port=80/tcp –permanent
Still can’t access web page? Check IPV6 listening in the apache configuration.
service httpd restart