Nagios Core Server Installation Centos 8 Class #3 | NCP Course | Tech Arkit



sed -i 's/SELINUX=enforcing/SELINUX=disabled' /etc/selinux/config

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

cat /etc/selinux/config



setenforce 0





firewall-cmd --permanent --add-service=http

firewall-cmd --permanent --add-service=https

firewall-cmd --reload



yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm



yum install wget php gcc glibc-common gd gd-devel make net-snmp perl perl-devel openssl



wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.3.tar.gz

tar -xvf nagios-4.4.3.tar.gz



groupadd nagcmd

useradd -g nagcmd nagios

usermod -aG nagcmd apache

groupadd nagios

usermod -aG nagios nagios



cd nagios-4.4.3

./configure --with-command-group=nagcmd

make all

make install



make install

make install-init

make install-commandmode

make install-config

make install-exfoliation

make install-webconf



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



systemctl enable httpd

systemctl start httpd

systemctl enable nagios

systemctl start nagios



/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg



cd

cd /tmp/

wget https://nagios-plugins.org/download/nagios-plugins-2.2.1.tar.gz



tar -xvf nagios-plugins-2.2.1.tar.gz

cd nagios-plugins-2.2.1

./configure --with-nagios-user=nagios --with-nagios-group=nagcmd

make

make install



cd /usr/local/nagios/libexec/



http://NagiosServerIP/nagios

nagiosadmin

PasswordHere

Nagios Tutorial #2 | Nagios Terminology | Tech Arkit



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Nagios Tutorial #1 | Nagios Certified Professional Course Overview

Introduction to Nagios

Nagios installation and configuration

User Management

Updating Nagios Core

Nagios core console go through

Setting up monitoring (ping, tcp, smtp, imap, simap, ftp, http and mysql)



Zabbix Windows Agent Installation and configuraion

Zabbix
agent is an peace of software which will gather statistical information from
host.
Agent is deployed on a monitoring target
to actively monitor local resources and applications






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zabbix monitoring tool Installation CentOS 8 | Open-source Enterprise | ...

Monitoring Networks, networking devices

Servers and services monitoring

Cloud infrastructure monitoring

Applications

Web services, web monitoring

Storage devices

Virtual machines, VMWare & Hyper-V

Java based application monitoring

Databases monitoring

It provides KPI / SLA

Indicates security measures

Database monitoring MySQL, SQLite, PostgreSQL and IBM DB2

System level monitoring like, Memory, CPU, Disk, Process

Monitor network devices, hardware, virtual machines, VMware hypervisor and VMware vCenter

Supports multiple authentication methods, LDAP and Active Directory

Notify through Email

Auto-discovery and automated metric collections

Distributed monitoring



:: Server Profile ::

Required packages:  PHP, HTTPD, PHP-FPM, MARIADB, LIBSSH2 and Zabbix Repo.

Port Numbers required to open: 10050 & 10051

Service Names:  zabbix-server, mariadb, php-fpm and httpd

SELinux status: Disabled





How to recover grub.conf in Linux | RHEL 8, 7 | Tech Arkit | grub console





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Ansible Course

Automation with Ansible Course

https://youtu.be/-b1ByalW4X8

Ansible Lab Setup

https://youtu.be/p8xkv1m-boE

Ansible Inventory configuration

https://youtu.be/G7_orKIWAeA

Ansible Ad-Hoc Commands with examples

https://youtu.be/Kr-62ON416c

Writing your first Ansible playbook guide

https://youtu.be/2nRfP69sGsk

How to variables in Ansible playbook

https://youtu.be/nOOe-_rNhP8

Conditionals and Loops of Ansible playbooks

https://youtu.be/JYPn5l3ChX0

Ansible playbook challenge

https://youtu.be/SO-3nqAf3sY

Deploy LAMP Stack Using Ansible Playbook

https://youtu.be/cyylA0Yfn2o

Tags Ansible

https://youtu.be/LPdRHd4ID7c

Ansible Roles

https://youtu.be/MGklkuq0-Gs

Ansible Vault

https://youtu.be/RbDlfDJhQlI

Ansible Galaxy: https://youtu.be/34ycoo2T1HI

15 Real time Linux Interview Questions and Answers | Tech Arkit |





Which of the following directory will hold the network configuration files?



 /etc

 /etc/sysconfig/network.scripts/

 /var/sysconfig

 /etc/sysconfig/



Ravi as system administrator wants to enable DHCP server in on machine. The server should allow the clietns to use the IP upto 4 hours which of the follow parameters will help him?



 maximum lease time 1200

 maximum lease time 7200

 maximum lease time 8400

 maximum lease time 14400



which of the following command can be used to check whether DNS is configured correctly?



 ping

 nslookup

 ipconfig

 ip addr



which of the following daemons are needed for SAMBA to handle its work?



 smb

 smb & nmb

 nmb

 smb & ssh



what of the following configuration should be done to enable auto mounting in client side?



 NFS

 Autofs

 Samba

 nmb



which of the following command can be used to display the logical volumes present in the system?



 pvdisplay

 lvm

 vgdisplay

 lvdisplay



which of the following parameters should be set in the dhcp configuration file so that a client will get a fixed ip?



 reserved-ip

 fixed-address

 reserved-address

 fixed-ip



which of the following is the configuration file related to DNS?



 /etc/named.conf

 /var/named.conf

 /var/named

 /var/www/html/



which of the following entry should be made in the network configuration file of client to contact a dns server?



 IPADDR=

 DOMAIN=

 DNS1=

 IPADDRDNS=



Which of the following service can be used for file sharing?



 nfs

 DHCP

 DNS

 Virtual Web Hosting



Which of the following is FALSE regarding logical volume?



 It is necessary to mount the logical volume to access it

 It is possible to make logical volume by specifying either number of extents or size

 More than one logical volume can be made from a single volume group

 It is not necessary to mount the logical volume to access it



Which of the following is called as document root with respect http server?



 /etc/http/conf.d

 /etc/httpd/conf.d

 /var/www/html

 /etc/www/html



Vinesh Enabled samba share in server2.techarkit.com (IP 192.168.2.5) He wants to check that all shares from remote client. Which of the following command will help to check?



 smbclient -L 192.168.2.5

 smbclient -U vinesh

 smbclient -L localhost

 smbclient -l server2



Ramana as system administrator manages the DHCP server. He wants to check the client details which is getting dynamic IP address from the DHCP server. Which of the following file can be used for this purpose?



 /var/lib/dhcpd/dhcpd.leases

 /etc/dhcp.conf

 /usr/share/doc/dhcp-version/dhcpd.conf.example

 /usr/lib/dhcpd/dhcpd.example



Which of the following file system is used for SAMBA file sharing?



 NFS

 EXT3

 XFS

 CIFS


How to Determine File System Type in Linux | 7 Commands | Tech Arkit





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Ansible Course

Automation with Ansible Course

https://youtu.be/-b1ByalW4X8

Ansible Lab Setup

https://youtu.be/p8xkv1m-boE

Ansible Inventory configuration

https://youtu.be/G7_orKIWAeA

Ansible Ad-Hoc Commands with examples

https://youtu.be/Kr-62ON416c

Writing your first Ansible playbook guide

https://youtu.be/2nRfP69sGsk

How to variables in Ansible playbook

https://youtu.be/nOOe-_rNhP8

Conditionals and Loops of Ansible playbooks

https://youtu.be/JYPn5l3ChX0

Ansible playbook challenge

https://youtu.be/SO-3nqAf3sY

Deploy LAMP Stack Using Ansible Playbook

https://youtu.be/cyylA0Yfn2o

Tags Ansible

https://youtu.be/LPdRHd4ID7c

Ansible Roles

https://youtu.be/MGklkuq0-Gs

Ansible Vault

https://youtu.be/RbDlfDJhQlI

Ansible Galaxy: https://youtu.be/34ycoo2T1HI