Apart from monitoring server hardware and software key variable like CPU/Memory/Disk/Process, We also require monitoring of apache logs using Zabbix to monitor all from a single monitoring platform
You can add more items, it is just required log file path, aggregator method, and regex
And you will get this Data under the Host graph along with other data
Check if Zabbix-Agent can access log file
Make sure, the Zabbix agent is able to read the log file, this can be ensured by executing the following command
su zabbix -s /bin/bash -c "tail /var/log/httpd/access_log"
if you are getting permission denied, please provide the permission to Zabbix user to read this directory
In case you are not getting data, Please cross-check for zabbix.log on the host, if there is any issue.
tail -f /var/log/zabbix/zabbix_agentd.log
Monitoring Web Scenario
Along with the apache logs, you can also any specific URL on a time interval validating the response and raising the alarm. It is like uptime robot where you add your URL and it pings to the URL and trigger an email in case URL is down.
Create a Web Scenario
Add basic detail like name, agent[zabbix/chorme], proxy if any
Add URL, params, and response validation under steps
We are following exactly the same steps as mentioned on this page, except one part, where we need to install MySQL server because we are using the same machine to host zabbix database as well.
wget https://repo.zabbix.com/zabbix/5.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_5.0-1+focal_all.deb
dpkg -i zabbix-release_5.0-1+focal_all.deb
apt update
apt install zabbix-server-mysql zabbix-frontend-php zabbix-apache-conf zabbix-agent
apt-get install mysql-server mysql-client
mysql -u root -p
zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -uzabbix -p zabbix
vim /etc/zabbix/zabbix_server.conf
vim etc/zabbix/apache.conf
vim /etc/zabbix/apache.conf
systemctl restart zabbix-server zabbix-agent apache2
systemctl enable zabbix-server zabbix-agent apache2
Once setup is done and assuming port 80 is open on the zabbix server,
you can browser this url for the front end
http://<publicip>/zabbix
Default Credential to Login are
Admin / zabbix
Basic Flow of monitoring
There is a Zabbix server, which has a monitoring interface
There is a Zabbix agent installed and configured on the machine which requires monitoring [in our case, LAMP application], called Host
Create a Host configuration, just an entry with hostname and associate monitoring template
Attach some monitoring templates. There are a prebuilt template for Linux/apache/PHP/MySQL and many more services and you can also create
The template contains “items” which has a configuration for what needs to monitor
Item contains triggers that raise alarm on basis of the defined threshold
Zabbix agent [active/passive] utilized to send the data to Zabbix server on basis of these template configurations.
Active: where agent sends the data automatically [Prefer This to save unnecessary polling of agent]
Passive, Zabbix server will make a request to Zabbix agent to pull the data
Dashboard/Graph/Screen to monitor
Media to add notification
Setting Up Zabbix Agent on LAMP Server [AMI 2]
Considering the following stack of LAMP application
Linux: AMI 2, Apache server, php 7.4 through FPM, MySQL server
Once setup zabbix client will be able to sent data to server, You can check logs on zabbix client machine
tail -f /var/log/zabbix/zabbix_agentd.log
It will start monitoring linux basic like CPU/Memory/Disk etc
Setting Up Apache configuration on LAMP server
For monitoring purposes, We need to add some configurations so that Zabbix agent can send that data to Zabbix server.
Make sure server info module is enabled
>>> httpd -M
Once the module is enabled, add the following line in httpd.conf [/eth/httpd/conf/httpd.conf]
<Location /server-info>
SetHandler server-info
Order Deny,Allow
Deny from all
Allow from localhost
</Location>
restart the apache server
service httpd restart
test this from the command line,
curl http://localhost/server-info
It should provide server information. Once this is done, you can monitor the host and graphs, and you will be getting up detail about the apache server
You Can Monitor
apache load, worker status, process, etc
monitor long request or time taking request
Setting Up PHP-FPM for monitoring
To monitor php-fpm process , You need to modify two file,
edit php-fpm config from the file vim /etc/php-fpm.d/www.conf
uncomment folloowing
pm.status_path = /status
ping.path = /ping
ping.response = pong
Edit httpd conf file [/etc/httpd/conf/httpd.conf] and add the following code
<LocationMatch "/status">
SetHandler "proxy:unix:/run/php-fpm/www.sock|fcgi://localhost/status"
Allow from localhost
</LocationMatch>
<LocationMatch "/ping">
c
Allow from localhost
</LocationMatch>
note : Just check php-fpm path is same for you
For php 5.6, there may be change in name of php-fpm process, like SetHandler “proxy:unix:/run/php5.6-fpm/www.sock|fcgi://localhost/status”
You Can Monitor
PHP-fpm load, process, etc
monitor long request or time taking request
Making Changes so that Apache access logs can be monitored
In my custom template, I have added a few custom items to monitor the number of 404 status code requests, 500 status code requests, and 404 logs
You will get this Data under the Host graph along with other data
Make sure, the Zabbix agent is able to read the log file, this can be ensured by executing the following command
su zabbix -s /bin/bash -c "tail /var/log/httpd/access_log"
if you are getting permission denied, please provide the permission to Zabbix users to read this directory.
Apart from monitoring server hardware and software key variable like CPU/Memory/Disk/Process, We also require monitoring of apache logs using Zabbix to monitor all from a…
A complete guide for monitoring LAMP [Linux/Apache/Mysql/PHP] application through Zabbix and setting up email notifications. In the following section, I am going to use the…
