Cara Install Observium di Ubuntu Server 20.04

Assalamu’alaikum Warahmatullahi Wabarakatuh, Selamat pagi sobat blogger sekalian, apa kabar semuanya... Pada kesempatan kali ini saya akan share bagaimana Cara Install Observium di Ubuntu Server 20.04 dan bagaimana cara konfigurasinya.

Observium adalah platform network monitoring yang mendukung berbagai jenis perangkat, platform, dan sistem operasi seperti Cisco, Windows, Linux, HP, Juniper, Dell, FreeBSD, Brocade, Netscaler, NetApp, dan banyak lagi.

Observium berfokus pada penyediaan antarmuka yang cantik dan kuat namun sederhana dan intuitif untuk kesehatan dan status jaringan Anda.

Pada tutorial kali ini, sobat akan belajar cara menginstal dan mengkonfigurasi Observium di Ubuntu Server 20.04. Ok langsung saja bagaimana cara installasinya ikuti step by step Tutorial berikut.

1. Install paket Observium

Install paket paket yang dibutuhkan untuk Observium

apt install libapache2-mod-php7.4 php7.4-cli php7.4-mysql php7.4-mysqli php7.4-gd php7.4-json \
php-pear snmp snmpd fping mysql-server mysql-client python3-mysqldb rrdtool subversion whois mtr-tiny \
ipmitool graphviz imagemagick apache2 python3-pymysql python-is-python3

2. Download Observium

Sebelumnya kita buat dahulu direktori untuk Observium di direktori /opt

root@srv3:~# mkdir -p /opt/observium && cd /opt
root@srv3:/opt# wget http://www.observium.org/observium-community-latest.tar.gz
root@srv3:/opt# tar zxvf observium-community-latest.tar.gz

3. Buat Database

Buat password Mysql database dengan menjalankan perintah berikut

root@srv3:/opt# mysql_secure_installation

Buat Database untuk Observium

mysql -u root -p

CREATE DATABASE dbobservium DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'observuser'@'localhost' identified by 'password';
GRANT ALL PRIVILEGES ON dbobservium.* TO 'observuser'@'localhost';
exit;

4. Konfigurasi Observium

Copy file config.php.default menjadi config.php

root@srv3:/opt# cd observium
root@srv3:/opt/observium# cp config.php.default config.php
root@srv3:/opt/observium# nano config.php

Lalu edit seperti dibawah ini

// Database config ---  This MUST be configured
$config['db_extension'] = 'mysqli';
$config['db_host']      = 'localhost';
$config['db_user']      = 'observuser';
$config['db_pass']      = 'password';
$config['db_name']      = 'dbobservium';

Restart service Mysql lalu Jalankan perintah discovery.php script untuk memasukan MySQL Schema

root@srv3:/opt/observium# systemctl restart mysql
root@srv3:/opt/observium# ./discovery.php -u

Buat direktori logs dan rrd

root@srv3:/opt/observium# mkdir logs
root@srv3:/opt/observium# mkdir rrd
root@srv3:/opt/observium# chown www-data:www-data rrd

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5. Apache Configuration

Edit file 000-default.conf

root@srv3:/opt/observium# mv /etc/apache2/sites-available/000-default.conf /etc/apache2/sites-available/000-default.conf.ori
root@srv3:/opt/observium# nano  /etc/apache2/sites-available/000-default.conf

Lalu masukan script dibawah ini

<VirtualHost *:80>
    ServerAdmin webmaster@localhost
    DocumentRoot /opt/observium/html
    <FilesMatch \.php$>
      SetHandler application/x-httpd-php
    </FilesMatch>
    <Directory />
            Options FollowSymLinks
            AllowOverride None
    </Directory>
    <Directory /opt/observium/html/>
            DirectoryIndex index.php
            Options Indexes FollowSymLinks MultiViews
            AllowOverride All
            Require all granted
    </Directory>
    ErrorLog  ${APACHE_LOG_DIR}/error.log
    LogLevel warn
    CustomLog  ${APACHE_LOG_DIR}/access.log combined
    ServerSignature On
</VirtualHost>

Enable mod_rewrite for Observium's URLs:

root@srv3:/opt/observium# a2enmod rewrite
root@srv3:/opt/observium# systemctl restart apache2

6. Setting snmp

Jalankan perintah berikut untuk mendeteksi type Distro Linux yang akan dimonitor.

root@srv3:/opt/observium# wget -O /usr/local/bin/distro https://gitlab.com/observium/distroscript/raw/master/distro
root@srv3:/opt/observium# chmod +x /usr/local/bin/distro

Copy file snmpd.conf.example ke direktori /etc/snmp/

root@srv3:/opt/observium# cp snmpd.conf.example /etc/snmp/
root@srv3:/opt/observium# mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.ori
root@srv3:/opt/observium# mv /etc/snmp/snmpd.conf.example /etc/snmp/snmpd.conf
root@srv3:/opt/observium# nano /etc/snmp/snmpd.conf

Edit file snmpd.conf seperti dibawah ini

#  Listen for connections on all interfaces (both IPv4 *and* IPv6)
agentAddress udp:161,udp6:[::1]:161

#  Full view access
view   all         included   .1

#  system + hrSystem groups only
view   systemonly  included   .1.3.6.1.2.1.1
view   systemonly  included   .1.3.6.1.2.1.25.1

#  Default access to full view
rocommunity observium  default    -V all

#  Default access to basic system info
#rocommunity public  default    -V systemonly

#  System contact and location
syslocation Data Center Jakarta
syscontact sysadmin <your@email.address>

#  Disk Monitoring
disk       /     10000
disk       /var  5%
includeAllDisks  10%

# Unacceptable 1-, 5-, and 15-minute load averages
load   12 10 5

# This line allows Observium to detect the host OS if the distro script is installed
extend .1.3.6.1.4.1.2021.7890.1 distro /usr/local/bin/distro

# This lines allows Observium to detect hardware, vendor and serial
extend .1.3.6.1.4.1.2021.7890.2 hardware /bin/cat /sys/devices/virtual/dmi/id/product_name
extend .1.3.6.1.4.1.2021.7890.3 vendor   /bin/cat /sys/devices/virtual/dmi/id/sys_vendor
extend .1.3.6.1.4.1.2021.7890.4 serial   /bin/cat /sys/devices/virtual/dmi/id/product_serial

# This line allows Observium to collect an accurate uptime
extend uptime /bin/cat /proc/uptime

# This line enables Observium's ifAlias description injection
#pass_persist .1.3.6.1.2.1.31.1.1.1.18 /usr/local/bin/ifAlias_persist

Resrtart service snmpd

root@srv3:/opt/observium# systemctl restart snmpd
root@srv3:/opt/observium# systemctl status snmpd

Untuk pengetesan jalankan perintah dibawah ini

root@srv3:/opt/observium# snmpwalk -v2c -c observium localhost

7. Add cron Job

Tambahkan cron jobs, buat file baru /etc/cron.d/observium lalu tambahkan script dibawah ini

root@srv3:/opt/observium# nano /etc/cron.d/observium

# Run a complete discovery of all devices once every 6 hours
33  */6   * * *   root    /opt/observium/discovery.php -h all >> /dev/null 2>&1

# Run automated discovery of newly added devices every 5 minutes
*/5 *     * * *   root    /opt/observium/discovery.php -h new >> /dev/null 2>&1

# Run multithreaded poller wrapper every 5 minutes
*/5 *     * * *   root    /opt/observium/poller-wrapper.py >> /dev/null 2>&1

# Run housekeeping script daily for syslog, eventlog and alert log
13 5 * * * root /opt/observium/housekeeping.php -ysel >> /dev/null 2>&1

# Run housekeeping script daily for rrds, ports, orphaned entries in the database and performance data
47 4 * * * root /opt/observium/housekeeping.php -yrptb >> /dev/null 2>&1

Tambahkan user login dengan level 10 ./adduser.php <username> <password> <level>
ini digunakan untuk login ke observium lalu untuk menambahkan Host yang akan kita monitor jalankan perintah berikut ./add_device.php <hostname> <community> v2c
IP 192.168.0.223 adalah ip localhost

root@srv3:/opt/observium# ./adduser.php admin password 10
root@srv3:/opt/observium# ./add_device.php 192.168.0.223 observium v2c

Tambahkan juga Host-Host yang akan dimonitoring dengan langkah yang sama mulai dari install snmp dan setting snmp Selanjutnya Update database discover dan poller

root@srv3:/opt/observium# ./discovery.php -h all

root@srv3:/opt/observium# ./poller.php -h all

8. Web Configuration

Untuk pengetesan buka browser lalu masukan pada url http://[Server ip] masukan user dan password

Tampilan Dashboard Observium

Tampilan Dashboard Host Ubuntu

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