How to do Debian Hadoop monitoring
This article introduces a variety of methods and tools to monitor Hadoop clusters on Debian systems to help you effectively manage cluster performance and stability.
Hadoop comes with monitoring tools:
- Hadoop Admin UI: Access the Hadoop Admin UI interface through a browser to intuitively understand the cluster status and resource utilization.
- Hadoop Resource Manager: Access the ResourceManager Web UI (usually
http://<resourcemanager-host> :8088</resourcemanager-host>), monitor cluster resource usage and job status. - Hadoop NameNode: Access the NameNode Web UI (usually
http://<namenode-host> :50070</namenode-host>), view HDFS status and file system information.
Third-party monitoring tools:
- Apache Ambari: Powerful web-based monitoring tool that supports centralized management and monitoring of most Hadoop components and provides a friendly user interface.
- Ganglia: A high-performance, scalable distributed monitoring system, especially suitable for large Hadoop clusters, is often used in combination with Grafana to achieve data visualization.
- Prometheus: The open source metric collection and display system can collect performance metrics through Hadoop's JMX interface and provide powerful query and visualization functions.
Monitoring configuration and alarm:
- Enable JMX: Correctly configure Hadoop components to enable JMX, which facilitates monitoring system to collect performance metrics.
- Configure data sources: For example, configure Prometheus exporter to ensure that the monitoring system can obtain data from the Hadoop cluster.
- Create a dashboard: Use tools such as Grafana to create a dashboard to visually display key performance indicators.
- Set alarm rules: Set alarm threshold, and issue alarms in time when the indicator exceeds the range.
Important tips:
- Ensure that Hadoop configuration files (such as
core-site.xml,hdfs-site.xml,mapred-site.xml) are correctly configured to ensure that the monitoring tool is running normally.
Selecting appropriate monitoring tools and methods and making reasonable configurations will significantly improve the management efficiency of Hadoop clusters and ensure its sustained and stable operation.
The above is the detailed content of How to do Debian Hadoop monitoring. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to use the chrono library in C?
Apr 28, 2025 pm 10:18 PM
Using the chrono library in C can allow you to control time and time intervals more accurately. Let's explore the charm of this library. C's chrono library is part of the standard library, which provides a modern way to deal with time and time intervals. For programmers who have suffered from time.h and ctime, chrono is undoubtedly a boon. It not only improves the readability and maintainability of the code, but also provides higher accuracy and flexibility. Let's start with the basics. The chrono library mainly includes the following key components: std::chrono::system_clock: represents the system clock, used to obtain the current time. std::chron
How to measure thread performance in C?
Apr 28, 2025 pm 10:21 PM
Measuring thread performance in C can use the timing tools, performance analysis tools, and custom timers in the standard library. 1. Use the library to measure execution time. 2. Use gprof for performance analysis. The steps include adding the -pg option during compilation, running the program to generate a gmon.out file, and generating a performance report. 3. Use Valgrind's Callgrind module to perform more detailed analysis. The steps include running the program to generate the callgrind.out file and viewing the results using kcachegrind. 4. Custom timers can flexibly measure the execution time of a specific code segment. These methods help to fully understand thread performance and optimize code.
How to optimize code
Apr 28, 2025 pm 10:27 PM
C code optimization can be achieved through the following strategies: 1. Manually manage memory for optimization use; 2. Write code that complies with compiler optimization rules; 3. Select appropriate algorithms and data structures; 4. Use inline functions to reduce call overhead; 5. Apply template metaprogramming to optimize at compile time; 6. Avoid unnecessary copying, use moving semantics and reference parameters; 7. Use const correctly to help compiler optimization; 8. Select appropriate data structures, such as std::vector.
How to understand DMA operations in C?
Apr 28, 2025 pm 10:09 PM
DMA in C refers to DirectMemoryAccess, a direct memory access technology, allowing hardware devices to directly transmit data to memory without CPU intervention. 1) DMA operation is highly dependent on hardware devices and drivers, and the implementation method varies from system to system. 2) Direct access to memory may bring security risks, and the correctness and security of the code must be ensured. 3) DMA can improve performance, but improper use may lead to degradation of system performance. Through practice and learning, we can master the skills of using DMA and maximize its effectiveness in scenarios such as high-speed data transmission and real-time signal processing.
What is real-time operating system programming in C?
Apr 28, 2025 pm 10:15 PM
C performs well in real-time operating system (RTOS) programming, providing efficient execution efficiency and precise time management. 1) C Meet the needs of RTOS through direct operation of hardware resources and efficient memory management. 2) Using object-oriented features, C can design a flexible task scheduling system. 3) C supports efficient interrupt processing, but dynamic memory allocation and exception processing must be avoided to ensure real-time. 4) Template programming and inline functions help in performance optimization. 5) In practical applications, C can be used to implement an efficient logging system.
How to implement loosely coupled design in C?
Apr 28, 2025 pm 09:42 PM
To implement loose coupling design in C, you can use the following methods: 1. Use interfaces, such as defining the Logger interface and implementing FileLogger and ConsoleLogger; 2. Dependency injection, such as the DataAccess class receives Database pointers through the constructor; 3. Observer mode, such as the Subject class notifies ConcreteObserver and AnotherObserver. Through these technologies, dependencies between modules can be reduced and code maintainability and flexibility can be improved.
How to write a file in C?
Apr 28, 2025 pm 09:36 PM
Write files in C using the ofstream class. 1) Create ofstream object and open the file. 2) Select the file mode, such as append mode (std::ios::app). 3) Implement error handling and use exception capture. 4) Optimize performance and use buffer management. 5) Use RAII technology to automatically manage file resources.
Steps to add and delete fields to MySQL tables
Apr 29, 2025 pm 04:15 PM
In MySQL, add fields using ALTERTABLEtable_nameADDCOLUMNnew_columnVARCHAR(255)AFTERexisting_column, delete fields using ALTERTABLEtable_nameDROPCOLUMNcolumn_to_drop. When adding fields, you need to specify a location to optimize query performance and data structure; before deleting fields, you need to confirm that the operation is irreversible; modifying table structure using online DDL, backup data, test environment, and low-load time periods is performance optimization and best practice.
