CentOS 8 安裝 nagios 4

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安裝準備

1. 設定SELinux

1. sed -i 's/SELINUX=.*/SELINUX=permissive/g' /etc/selinux/config
   
2. 
   
3. setenforce 0

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打開防火牆 HTTP HTTPS

1. firewall-cmd --zone=public --add-service=http --permanent
   
2. firewall-cmd --zone=public --add-service=https --permanent
   
3. firewall-cmd --reload

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準備安裝 Nagios 模組:

1. dnf install gcc glibc glibc-common make gettext automake autoconf gd gd-devel perl net-snmp net-snmp-utils openssl-devel epel-release wget tar
   
2. 
   
3. dnf --enablerepo=powertools,epel install perl-Net-SNMP

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設定 LAMP Stack
Nagios 使用 LAMP stack 基本應用服務來使面板運作在CentOS 8.

Nagios 需要安裝兩部分讓 LAMP stack運行: Apache Web Server 及 PHP.

安裝Apache

1. dnf install httpd
   
2. systemctl start httpd
   
3. systemctl enable httpd

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安裝 PHP:

1. dnf install php php-cli

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下載及安裝 Nagios

1. cd /tmp
   
2. curl -s https://api.github.com/repos/NagiosEnterprises/nagioscore/releases/latest \
   
3. | grep "browser_download_url.*nagios.*.tar.gz"" \
   
4. | tail -n 1 \
   
5. | cut -d : -f 2,3 \
   
6. | tr -d " \
   
7. | wget -O nagios-core.tar.gz -qi -
   
8. curl -s https://api.github.com/repos/nagios-plugins/nagios-plugins/releases/latest \
   
9. | grep "browser_download_url.*nagios-plugins.*.tar.gz"" \
   
10. | tail -n 1 \
    
11. | cut -d : -f 2,3 \
    
12. | tr -d " \
    
13. | wget -O nagios-plugins.tar.gz -qi -
    
14. tar xzvf nagios-core.tar.gz
    
15. tar xzvf nagios-plugins.tar.gz

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更改Nagios核心目錄

1. cd nagios-4.*/

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編譯Nagios來源檔案

1. ./configure
   
2. make all

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新增Nagios使用者及群組加入apache群組到nagios使用者

1. make install-groups-users
   
2. usermod -aG nagios apache

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從編譯檔案安裝 Nagios

1. make install

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安裝Nagios服務，命令模式，預設模式
最後重啟Apache

1. make install-daemoninit
   
2. make install-commandmode
   
3. make install-config
   
4. make install-webconf
   
5. systemctl restart httpd

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增加nagiosadmin使用者密碼

1. htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

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啟動Nagios 服務:

1. systemctl start nagios
   
2. systemctl enable nagios

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安裝Nagios plugins及切換目錄

1. cd /tmp/nagios-plugins-*/

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編譯和安裝Nagios plugins:

1. ./configure
   
2. make
   
3. make install

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開始使用Nagios

打開瀏覽器並輸入IP加/nagios

1. http://192.168.3.X/nagios

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CentOS nagios

CentOS nagios

https://www.linode.com/docs/guides/install-nagios-on-centos-8/