Practice to know - deploy ELK log analysis system (provide package, super detailed, follow up!)

Practice to know -- deploy ELK log analysis system (provide package) Preface The previous article introduced the theory of ELK log analysis system. This paper will deploy and configure ELK log analysis system through case environment. Environmental planning In the cluster mode, two elastic search nodes can be installed, one of which is Kibana. ...

Posted on Fri, 27 Mar 2020 07:21:42 -0400 by DangerousDave86

Dubbo SPI usage - extended point adaptation

Opening chapter Last one Dubbo SPI usage (1) - automatic wrapping of extension points. This paper continues with Dubbo SPI - extended point adaptation. text outline Introduction to adaptive extension point @How to use Adaptive annotation Act on class Act on method 1. Adaptive extension point The dependent extension point injected by Exte ...

Posted on Fri, 27 Mar 2020 05:54:13 -0400 by nicky77uk1

FormData/Go fragment / block file upload

The FormData interface provides a way to construct key value pairs that represent form data, and the data passing through it can be used XMLHttpRequest.send() Method, this interface and this method are quite simple and direct. If the code type at the time of delivery is set to "multipart / form data", it will use the same format as th ...

Posted on Thu, 26 Mar 2020 10:00:10 -0400 by johncal

Linux operation and maintenance learning - DAY11

Apache services At present, the programs that provide Web network services include IIS, Nginx, and Apache. IIS is a web service program in Windows system. Nginx is a lightweight website service software, high-performance HTTP and reverse proxy server, and also an IMAP/POP3/SMTP proxy server, which is an asynchronous model architecture. Apache ...

Posted on Tue, 24 Mar 2020 08:55:47 -0400 by Ben5on

Hook method and hook interface in spring

spring framework has a high scalability. We can extend spring flexibly through these interfaces. 1. Aware interface Spring provides a variety of Aware interfaces, which is convenient to get the current running environment from the context. Several common sub interfaces are: ApplicationContextAware, BeanClassLoaderAware, BeanFactoryAware, Be ...

Posted on Tue, 24 Mar 2020 07:59:11 -0400 by Verrou

zookeeper failed to start because the database could not be read

Recently, our cluster is in an abnormal state. It was found that it failed all the time when starting zk. After reading the log, it was really sad. If it was in black, it was reported in minutes. At first, I didn't really want to understand why it was so difficult to start zk, and it failed stably in about 5s. After a while, it can be judged t ...

Posted on Mon, 23 Mar 2020 22:27:12 -0400 by brianlange

Hadoop learning - HBASE installation, command line operation and java operation

Before using HABSE, install a zookeeper I used to write https://www.cnblogs.com/wpbing/p/11309761.html   Let's briefly introduce HBASE HBASE is a database, which can provide real-time random reading and writing of data He is a nosql database, which is not structured. He can only do some rough queries, such as the connection query between m ...

Posted on Mon, 23 Mar 2020 20:06:05 -0400 by jdbfitz

Cassandra source code analysis series startup module

Based on 3.11.4 The Cassandra startup process starts from the Cassandra script under bin. It involves some parameter settings of cassandra-env.sh for process startup, such as heap memory allocation, log parameter configuration, basic environment settings, etc. we can directly see the startup process, that is, the launch_service function, Then y ...

Posted on Mon, 23 Mar 2020 11:46:37 -0400 by Kondie

Cassandra Best Practices Series - CQL QuickStart

Simple Single Node C* This article describes how to simply set up a single node of Cassandra and how to build a multi-node Cassandra cluster. To set up a single node, we need to do the following things: 1. Node deployment JAVA basic environment;2. Get the Cassandra binary package you need: either compile the source code or get it directly Offic ...

Posted on Mon, 23 Mar 2020 00:52:38 -0400 by Zhadus

log4j does not output in springboot and controls third-party log level

Configuration (log4j.properties) log4j.rootLogger = debug,stdout,D,E,DB ### Output information to control lift ### log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target = System.out #### change to info in deployed env.### log4j.appender.stdout.Threshold = DEBUG log4j.appender.stdout.layout = org.apache.log4j.Pa ...

Posted on Sat, 21 Mar 2020 13:38:05 -0400 by Sillysoft