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Jual DVD Tutorial Nagios
Rp 400.000
GRATIS Ongkir
Lokasi : Jawa Barat
Kondisi : Baru
Posted on : 24-01-2017 14:48
Terjual : 0 barang telah terjual
Dilihat : 14 kali
Berat : 1 gram
Last Sundul : 24 January 2017, 02:48:38 PM

Penjelasan Produk

emoticon-Ultah
Pengertian NAGIOS

Sebuah sistem dan aplikasi monitoring jaringan yang diciptakan oleh Ethan Galstad . Nagios mengawasi host-host dan servis yang telah ditetapkan, memberi peringatan jika keadaan memburuk, dan memberi tahu kapan keadaan tersebut membaik. Nagios dijalankan dalam Linux.

Fungsi NAGIOS

– Memantau Layanan Jaringan (SMTP, POP3, HTTP, NNTP, PING, dll).
– Memantau resource Server (Processor load, Disk usage, memory, dll).
– Kemudahan untuk membuat plugin.
– Pengecekan layanan secara pararel.
– Dengan implementasi “parents” dari suatu host, maka bisa dengan mudah dibedakan host yang benar-benar down, dan host yang terkena dampaknya.
– Beragam Pemberitahuan Jika dideteksi adanya masalah ( leawtvia email, pager, atau buatan user).
– Kemampuan ‘event-handlers”. Ketika layanan atau host bermasalah, ‘event-handlers’ bisa digunakan untuk pemecahan masalah secara otomatis. Misalkan, layanan email terhenti, lewat ‘event-handler’ kita bisa me-restart layanan email tersebut, sehingga berungsi normal kembali.
– Log diputar otomatis.
– Mendukung untuk pemantauan secara redundant.
Kelebihan dan Kekurangan NAGIOS

A. Kelebihan NAGIOS

Nagios berbasis open source
Menggunakan web interface, sehingga dapat diakses secara mudah dan remote dari tempat lain.
Selain memonitor network service (HTTP, FTP, dsb), juga dapat memonitor host resource (penggunaan disk, penggunaan memory, proses, log file, dsb)
Mempunyai fitur reporting lewat web interface.
Mempunyai banyak plugins, sehingga menambah fitur-fitur Nagios menjadi semakin lengkap dibandingkan NMS yang lain.
Support penggunaan google map.
Mempunyai fitur Schedule downtime, dimana sangat diperlukan ketika server di maintenance atau di upgrade.

B. Kekurangan NAGIOS

Device yang akan dimonitoring perlu dimasukkan secara manual
Tidak mampu menghasilkan laporan history dari aktivitas pengguna bandwidth.

* Error OZEKIemoticon-Motret
Cannot serve GUI content: Object reference not set to an instance of an object
at OzekiNG.ozUser.g (ozCommon.ozHashtable A_0) <0xb2c0c400 + 0x00601> in :0 at hn.a (OzekiNG.ozUser A_0, ozCommon.ozHashtable A_1) <0xb2c03a80 + 0x01023> in :0 at aa.c (OzekiNG.ozUser A_0, ozCommon.ozHashtable A_1) <0xb2f32f20 + 0x00069> in :0 at a4.b (OzekiNG.ozUser A_0, ozCommon.ozHashtable A_1, System.Text.StringBuilder A_2) <0xb2c2d618 + 0x003a7> in :0 at aa.a (ozSupportedHttp.ozSupportedHttpListenerContext A_0, OzekiNG.ozUser A_1, ozCommon.ozHashtable A_2, System.Text.StringBuilder A_3) <0xb2f4e070 + 0x00076> in :0 at db.a (ozSupportedHttp.ozSupportedHttpListenerContext A_0) <0xb2f49d58 + 0x02457> in :0

SOLUSI :
use UBUNTU 15 .xx

Nagios Untuk Ubuntu 16.X 32 bit

auto eth0
iface eth0 inet dhcp

## Or configure a static IP
auto eth0
iface eth0 inet static
address 192.168.1.104
gateway 192.168.1.1
netmask 255.255.255.0
network 192.168.1.1
broadcast 192.168.1.255

First You need to make sure you have install Ubuntu 16.04 LAMP Server atau http://www.ubuntugeek.com/step-by-step-ubuntu-16-04-xenial-xerus-lamp-server-setup.html

and once you have that follow the next steps. Switch to root user and run the all the commands

sudo su --

Install the following packages

apt-get install build-essential php7.0-gd wget libgd2-xpm-dev libapache2-mod-php7.0 apache2-utils daemon unzip

You need to create nagios user,nagcmd group and add the nagios,apache user to the part of nagcmd group

useradd nagios
groupadd nagcmd
usermod -a -G nagcmd nagios
usermod -a -G nagcmd www-data

Download Nagios core DIY Source from here
https://www.nagios.org/downloads/nagios-core/

cd /tmp/
wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.1.1.tar.gz
tar -zxvf /tmp/nagios-4.1.1.tar.gz
cd /tmp/nagios-4.1.1/

Compile and install Nagios Using the following commands

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

jika gagal ketik:

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

make all
make install
make install-init
make install-config
make install-commandmode
make install-webconf
You may get the following error

root@ubuntu:/tmp/nagios-4.1.1# make install-webconf
/usr/bin/install -c -m 644 sample-config/httpd.conf /etc/httpd/conf.d/nagios.conf
/usr/bin/install: cannot create regular file ‘/etc/httpd/conf.d/nagios.conf': No such file or directory
Makefile:296: recipe for target ‘install-webconf' failed
make: *** [install-webconf] Error 1

The above error message is due to that nagios is trying to create the nagios.conf file inside the /etc/httpd.conf/directory. But, in Ubuntu systems the nagios.conf file should be placed in /etc/apache2/sites-enabled/directory
Run the following command instead of make install-webconf
sudo /usr/bin/install -c -m 644 sample-config/httpd.conf /etc/apache2/sites-enabled/nagios.conf
make install-exfoliation

Configure Nagios web Interface
Create nagiosadmin account using the following command

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

Enable CGI module and restart the apache2 server

a2enmod cgi

service apache2 restart

Install Nagios Plugins
Download and install nagios plugins using the following commands

cd /tmp
wget http://www.nagios-plugins.org/download/nagios-plugins-2.1.1.tar.gz
tar -zxvf /tmp/nagios-plugins-2.1.1.tar.gz
cd /tmp/nagios-plugins-2.1.1/

Compile and install nagios plugins using the following commands

./configure --with-nagios-user=nagios --with-nagios-group=nagios
make
make install

Start Nagios
Verify the sample nagios configuration files using the following command

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

Output
Nagios Core 4.1.1
Copyright (c) 2009-present Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 08-19-2015
License: GPL
Website: https://www.nagios.org
Reading configuration data...
Read main config file okay...
Read object config files okay...
Running pre-flight check on configuration data...
Checking objects...
Checked 8 services.
Checked 1 hosts.
Checked 1 host groups.
Checked 0 service groups.
Checked 1 contacts.
Checked 1 contact groups.
Checked 24 commands.
Checked 5 time periods.
Checked 0 host escalations.
Checked 0 service escalations.
Checking for circular paths...
Checked 1 hosts
Checked 0 service dependencies
Checked 0 host dependencies
Checked 5 timeperiods
Checking global event handlers...
Checking obsessive compulsive processor commands...
Checking misc settings...
Total Warnings: 0
Total Errors: 0
Things look okay -- No serious problems were detected during the pre-flight check
If you are not seeing any errors the start nagios using the following

/etc/init.d/nagios start

When i try to start the nagios i got the following error and found out there is an issue with nagios init script

[....] Starting nagios (via systemctl): nagios.serviceFailed to start nagios.service: Unit nagios.service failed to load: No such file or directory. failed!

Solution to nagios init script
Copy /etc/init.d/skeleton to /etc/init.d/nagios using the following command

cp /etc/init.d/skeleton /etc/init.d/nagios

Now edit the nagios file

vi nagios

add the following lines

DESC="Nagios"
NAME=nagios
DAEMON=/usr/local/nagios/bin/$NAME
DAEMON_ARGS="-d /usr/local/nagios/etc/nagios.cfg"
PIDFILE=/usr/local/nagios/var/$NAME.lock

Save and exit the file
Finally you need to change the permissions of the file

chmod +x /etc/init.d/nagios

You can start the nagios using the following command

/etc/init.d/nagios start

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