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ELK

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  1. What is ELK? Definition : A powerful suite of open-source tools used to collect, search, analyze, and visualize data in real time. Official Name : Today, it is officially called the Elastic Stack . Core Purpose : Centralized monitoring, log management, security analytics, and search operations. 🏗️ 2. Core Architecture (The 4 Components) 🔹 E – Elasticsearch Role : The Heart (Database & Engine) What it does : Stores and indexes all incoming data. Key Feature : Extremely fast search results because it uses inverted indexing . Format : Stores data as structured JSON text documents . 🔹 L – Logstash Role : The Data Processor (Pipeline) What it does : Gathers data from various sources, cleans/filters it, and pushes it to Elasticsearch. Pipeline Mechanism : Uses an Input → Filter → Output workflow. 🔹 K – Kibana Role : The Face (User Interface) What it does : Connects to Elasticsearch to build live charts, graphs, maps, and dashboards. Common Use : Running search queries and m...
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GCP- Interview questions

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 What is Compute? Compute is the processing power used to run applications and perform tasks. Compute = CPU + Memory (RAM) used to run your workloads What is SAAS, IAAS, PAAS? SaaS (Software as a Service) is a cloud service model where ready-to-use software is delivered over the internet, and users can access it without managing or installing anything, such as Google Gmail. PaaS (Platform as a Service) is a cloud service model that provides a platform and environment for developers to build, run, and deploy applications without managing the underlying infrastructure, such as Google Cloud Platform App Engine. IaaS (Infrastructure as a Service) is a cloud service model that provides virtualized computing resources such as servers, storage, and networking over the internet, where users manage the operating system and applications, such as Amazon Web Services EC2.  What is GCP? Google Cloud Platform is a cloud computing platform provided by Google . It offers services li...
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Zabbix-Interview Questions

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 LLD stands for Low-Level Discovery. LLD is the feature in Zabbix that automatically discovers resources on a host, such as file systems, network interfaces, disks, CPUs, or SNMP sensors. Based on a discovery rule, Zabbix creates items, triggers, graphs, and hosts automatically using prototypes. This eliminates manual configuration and ensures that any newly added or removed resources are monitored automatically.
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SolarWind- Orion Plateform (On-Premises SolarWinds/ Self-Hosted SolarWinds)

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 Note:  On-Premises doesn't mean the servers must be physically in your own data center.  The classification depends on who manages the SolarWinds application , not where the VM is hosted. What is SolaWinds? SolarWinds Orion Platform is the SolarWinds framework that provides common functionality such as web access, alerting, reporting, discovery, user management, API services, and database connectivity. Monitoring modules such as NPM, NCM, and SAM use these functions to perform their specific monitoring tasks. Key Components of SolarWinds Architecture 1. Orion Platform The Orion Platform is the central software framework that provides: Web Console Alerting Engine Reporting Engine Discovery Services API Services User Authentication and Authorization Database Connectivity Job Scheduling The Orion Platform itself does not perform monitoring. It provides the infrastructure required by SolarWinds modules. 2. Main Polling Engine (MPE) Definition The Main Pollin...
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Zabbix package : Linux commands

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For APT-based systems (Ubuntu / Debian) 1. List all available Zabbix packages in the repo apt list | grep zabbix or to include all versions : apt list -a | grep zabbix 2. List all installed Zabbix packages dpkg -l | grep zabbix For YUM/DNF-based systems (RHEL / CentOS / Rocky / Alma) 1. List all available Zabbix packages in the repository yum list available | grep zabbix 2. List all installed Zabbix packages yum list installed | grep zabbix
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