1/13/2024 0 Comments Lamp stack![]() The LAMP stack is the "hello world" for deploying dynamic web applications. In a typical PHP website, the software stack includes.LAMP stack monitoring (Linux, Apache, MySQL, PHP) with Netdata Q2: if the server resources are enough, then what might be the root cause of the unresponsive web app? If we are at this point, where resources are available like, servers are healthy and under the threshold limit, it means that hardware is not the bottleneck, we should check for the software level bottleneck. If hardware is the bottleneck, we need to upgrade the resource either by following Vertical Scaling or Horizontal Scaling * Validate the request are legtimate, means there is no bocus request flooding your server to keep busy Or server resources are available even at peak load.Either server resources are NOT enough,.Most of the cloud provider provides these type of system/instance/machine monitoring tool, where we check the hardware component dependency and bottleneck areas. In case, you are using AWS RDS service for the database, you can use AWS cloudwatch or RDS monitoring tool with CPU matrix or connection matrix to figure out the root cause. If the database server is deployed on another machine, then, we need to follow the same steps as we covered in the earlier section to figure if the database server is enough or not. Network Bandwidth utilization vs allocation :.As most of the cloud systems provide a good bandwidth allocation and that can also be checked from Network monitoring and Most systems are equipped with SSD, so these are not the major factory but can play a vital role if your application highly depends on that, like you are using firebase data to read and write which need higher I/O or delivering large media file Memory Utilization Īpart from these 2, one can also check for another two factors.There are various tool like cloud instances also provide resource monitoring as Cloudwatch in AWS, or, one can setup open source tool like nagios, zabbix, opennms or there are handy utilitites like, glance, atop, etc Htop/top is only helpful if you monitor during load as they shows current state of the system otherwise put the monitoring by using any tool. In case of the machine become unresponsive, check for System logs, mostly under var/log/syslog location.htop/top command can be used to check the log You can use htop/top command to check the process and load If possible, put monitoring on CPU utilization. ![]() considering that we are on Linux OS, however, most *nix are same. To get the answer to this question, we analyze the system state. Q1:- are the resources enough to handle so many requests? The very first thing that is coming to consideration is, Hardware limitation Monitor Hardware Component Root Cause Analysis Flow Of AnalysisĬonsidering the situation where the site is becoming unresponsive, We divide this into two parts, hardware, and software Hardware To figure out the load issue, first, we need to figure out the dependent items of the stack, from where the problem may arise. Now you want to RCA and optimize the bottleneck of the problem, the following will provide you a complete guide to debug LOAD issue in LAMP stack LAMP Stack Component Let’s suppose the application becomes unresponsive after a certain load. ![]() This is a single server application, where PHP and apache are on an ubuntu-based Linux server and MySQL is on another server. There is php, apache, mysql based application, the stack is hosted on Linux.
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