ElasticSearch Cluster Log Limitation Problem

This article is based on CentOS7 environment using rpm package installation.ELK's default logging can grow significantly, with the exception of Elastic Search, and long runs can have catastrophic consequences (such as node downtime).This is the main problem we are facing today.The main strategy is to limit the total number of logs: time + size ...

Posted by iamngk on Fri, 16 Aug 2019 06:12:31 +0200

Configure inotify+rsync real-time synchronization

If you are not familiar with rsync services and commands, you can refer to the blog post. Remote synchronization through rsyncThere's not much to say here! Linux kernel has provided inotify notification interface since version 2.6.13 to monitor various changes of file system, such as file access, deletion, movement, modification, etc. Using th ...

Posted by skissiks on Thu, 15 Aug 2019 14:11:25 +0200

File & Recursive & Byte Stream

1.File class 1.1 File Class Overview and Construction Method [Application] Introduction to File Class It is an abstract representation of file and directory pathnames Files and directories can be encapsulated as objects through File For File, ...

Posted by nimbus on Thu, 15 Aug 2019 13:21:02 +0200

Setting up environment learning VLAN with GNS3

Catalog Setting up environment learning VLAN with GNS3 One.GNS3 Installation and Configuration Two.Build GNS3 Analog Topology Three.Experimental process Set IP information for PC1 and PC2 Layer 3 Switch Configuration Layer 2 Switch Configuration ...

Posted by andrei.mita on Wed, 14 Aug 2019 03:37:48 +0200

Embedded Linux Container Technology

Embedded Linux Container Technology I. Linux Container Technology The Linux Container container is a kernel virtualization technology that provides lightweight virtualization to isolate processes and resources. LXC is short for Linux Container. Lightweight virtualization can be provided to isola ...

Posted by firemankurt on Tue, 13 Aug 2019 09:06:11 +0200

Qt Write Custom Control 50-Mini Dashboard

1. Preface This control is named Mini Dashboard because it can be reduced to a very small area display. It is very suitable for small area display of instrument data. It can also be manually touched to adjust the progress. It is one of the most beautiful and compact controls I personally think.The fir ...

Posted by petrosa on Tue, 13 Aug 2019 03:39:21 +0200

Distributed Construction of redis cluster Single Machine Pseudo-3 Master-3 Slave-3 Sentinel Cluster

Recently, the company introduced a micro-service framework, the previous redis 60G storage has been unable to meet the current 260G business needs, after some consideration to build the cluster. In order to facilitate my demonstration with a server, production environment is not recommended to do so (useless), just to record the process, as f ...

Posted by dtyson2000 on Mon, 12 Aug 2019 12:20:54 +0200

AndroidN adds physical keys [android7.1.2][msm8953]

1. Overview Based on the qcom msm8953 Android 7.1.2 platform, a new MODE key is required for the latest hardware modification in order to send a broadcast for the user layer to use. 2. Implementation (from bottom to top-> (kernel->frameworks)) First list the files involved in the implementatio ...

Posted by samshel on Mon, 12 Aug 2019 04:01:06 +0200

dns parsing tool dig, one of linux's powerful tools

dig command is mainly used to query host address information from dns domain name server. It works the same as NSLOOKUP command, but it outputs more information than nslookup. Install dig redhat Department System yum install -y bind-utils debian Department System apt-get install -y dnsutils Query Sina's dns parsing as follows Di www.sina.com o ...

Posted by 9three on Sun, 11 Aug 2019 17:17:02 +0200

saltstack mini-trial knife

When we have only one server, two servers and several servers, we deploy software tools to log on to the server one by one, but as the number of enterprise servers not only increases, it is obvious that the deployment of logon by one has become unrealistic. At this time, the automated operation and maintenance management tools came on the scen ...

Posted by blui on Sat, 10 Aug 2019 17:32:17 +0200