Installing Zabbix 1.8.2 on CenOS 5.5 and generating fake load to check the installation
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Install the basic CentOS 5.5 on a machine.
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Update CentOS using the following command:
yum -y update
Note : Disable firewall and SELinux only for testing
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Install EPEL using the following command:
rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-3.noarch.rpm
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Install mysql and php using yum:
yum install mysql mysql-server php php-gd php-bcmath php-xml php-mbstring php-mysql
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Download Zabbix rpm file from http://fedora.danny.cz/danny-el/5Server/
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-web-mysql-1.8.2-2.el5.x86_64.rpm
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-server-1.8.2-2.el5.x86_64.rpm
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-1.8.2-2.el5.x86_64.rpm
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-docs-1.8.2-2.el5.x86_64.rpm
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-agent-1.8.2-2.el5.x86_64.rpm
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-web-1.8.2-2.el5.x86_64.rpm
wget http://fedora.danny.cz/danny-el/5Server/x86_64/zabbix-server-mysql-1.8.2-2.el5.x86_64.rpm
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Install the downloaded Zabbix rpm's using the following command :
yum --nogpgcheck localinstall zabbix-1.8.2-2.el5.x86_64.rpm zabbix-server-1.8.2-2.el5.x86_64.rpm zabbix-server-mysql-1.8.2-2.el5.x86_64.rpm zabbix-agent-1.8.2-2.el5.x86_64.rpm zabbix-docs-1.8.2-2.el5.x86_64.rpm zabbix-web-1.8.2-2.el5.x86_64.rpm zabbix-web-mysql-1.8.2-2.el5.x86_64.rpm
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service httpd restart
chkconfig httpd on
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Configuring the Database part (MySQL)
service mysqld restart
chkconfig mysqld on
mysqladmin -u root password passw0rd!
mysql --user=root --password=passw0rd!
Welcome to the MySQL monitor. Commands end with ; or \g.
mysql> create database zabbix character set utf8;
mysql> create user 'zabbix'@'localhost' identified by 'password';
mysql> grant all on zabbix.* to zabbix;
mysql> flush privileges;
mysql> quit
Bye
Insert schema, data and images
cd /usr/share/doc/zabbix-server-mysql-1.8.2/create/schema
mysql --user=zabbix --password=password zabbix <>
cd ../data/
mysql --user=zabbix --password=password zabbix <>
mysql --user=zabbix --password=password zabbix <>
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Configuing PHP
edit /etc/php.ini
;...
;max_execution_time = 600
;max_input_time = 600
;memory_limit = 256M
...
;upload_max_filesize = 16M
...
;post_max_size = 32M
...
;date.timezone = Europe/Brussels
...
;mbstring.func_overload = 2
...
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Config Zabbix-server
edit /etc/zabbix/zabbix_server.conf
...
# Database user
DBUser=zabbix
....
#DBPassword=
DBPassword=
...
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Config Zabbix-webinterface
create /usr/share/zabbix/conf/zabbix.conf.php (remove the ;)
;
;global $DB_TYPE,
;$DB_SERVER,
;$DB_PORT,
;$DB_DATABASE,
;$DB_USER,
;$DB_PASSWORD,
;$IMAGE_FORMAT_DEFAULT;
;$DB_TYPE = "MYSQL";
;$DB_SERVER = "localhost";
;$DB_PORT = "0";
;$DB_DATABASE = "zabbix";
;$DB_USER = "zabbix";
;$DB_PASSWORD = "";
;$IMAGE_FORMAT_DEFAULT = IMAGE_FORMAT_PNG;
;?>
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service zabbix-server start
chkconfig zabbix-server on
service zabbix-agent start
chkconfig zabbix-agent on
lsof -i:10050
more /var/log/zabbix/zabbix_agentd.log
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http://server/zabbix
Login using the following credentials :
login: admin / password: zabbix
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Generate Fake CPU load :
perl -e 'while (--$ARGV[0] and fork) {}; while () {}' 4
top
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Generate Fake Disk-IO load and Free unused memory currently unavailable :
dd if=/dev/zero of=junk bs=1M count=1K (This will vreate a 1 GB file)
dd if=/dev/zero of=junk bs=1M count=10K (This will vreate a 10 GB file)
This is an useful command for when your OS is reporting less free RAM than it actually has. In case terminated processes did not free their variables correctly, the previously allocated RAM might make a bit sluggis over time.
This command then creates a huge file made out of zeroes and then removes it, thus freeing the amount of memory occupied by the file in the RAM.
In this example, the sequence will free up to 1GB(1M * 1K) of unused RAM. This will not free memory which is genuinely being used by active processes.
rm -rf junk
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Monitor Disk IO performance using iostat:
yum -y install sysstat
iostat -x 10 > /tmp/iostat.txt
tail -f /tmp/iostat.txt
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Test network speed without wasting disk
dd if=/dev/zero bs=1M count=1M | ssh root@192.168.160.161 'cat > /dev/null'
The above command will send 1GB of data from one host to the next over the network, without consuming any unnecessary disk on either the client nor the host. This is a quick and dirty way to benchmark network speed without wasting any time or disk space.
ENJOY !
