java calls JNI to exit abnormally and locate through core

Scene description There are jni calls in java, and all irregular java processes disappear without any exception logs. By analyzing the core file of linux, we can locate the problem in the program. JNI example First, we construct a JNI with an exception. There is an exception in the C function. The following files and comm ...

Posted on Sat, 22 Feb 2020 10:00:56 -0500 by chet139

Building Samba service of Centos 7

Samba is a free software to implement the SMB protocol on Linux and UNIX systems, which consists of server and client programs. SMB (Server Messages Block) is a kind of communication protocol that shares files and printers on LAN. It provides file and printer sharing services for different computers in LAN. SMB protocol is a client / server pr ...

Posted on Sat, 22 Feb 2020 02:18:16 -0500 by fitzsic

[easypoi uses template to derive climbing experience]

Problem Description: 1. Development environment, idea development tool, windows10 system, JDK8.0; system deployment environment, centeros7; 2. In the process of development, use the template to download documents, because the template is fixed, just fill in the required information; Problems found: Template documents are placed under the so ...

Posted on Thu, 20 Feb 2020 22:51:41 -0500 by Myke

Apache Service Deployment--Learn Notes

This experiment environment is redhat7.0 system, all experiments are from "linux should learn like this"The apache program is one of the web service programs currently with a high market share. It is recognized for its cross-platform and security, and has fast, reliable and simple API extensions. Its name is taken from Native America ...

Posted on Thu, 20 Feb 2020 15:17:54 -0500 by ant peacocke

jumpserver deployment installation

PrefaceWe are familiar with the bastion machine (springboard machine). In order to ensure the security of the server, we add a bastion machine. All ssh connections are completed through the bastion machine. The bastion machine also needs to have identity authentication, authorization, access control, audit and other functions.Jumpserver is the ...

Posted on Thu, 20 Feb 2020 06:26:06 -0500 by brain

linux entry series 12 -- partition, format and mount of disk management

The previous series of articles explained the VI editor, common commands, firewall and network service management, this article will explain the knowledge of disk management. This article will introduce a large number of Linux commands, some of which have been introduced in "Linux entry Series 5 - Linux commands for novices". Please c ...

Posted on Thu, 20 Feb 2020 01:14:17 -0500 by timclaason

Linux network client tools

ping command Send echo request of ICMP Protocol to target host Common options: Send ICMP:-I INTERFACE from the specified local interface There are multiple interfaces (network cards) in this machine. You can choose which interface to send from: - i (capital i) The interface enp0s3 is the local intranet ip; the interface enp0s8 is the nat ip a ...

Posted on Wed, 19 Feb 2020 22:44:43 -0500 by srikanth03565

Deploy Maven and Nexus

Blog Outline:1. Introduction to Maven1) Maven's functions:2) Maven usage scenarios (from a maintenance perspective):3) Maven WarehouseII. Deployment of Maven1) Configure the jdk environment2) Deploy Maven3. Deploy Nexus Private Service1) Introduction to Nexus2) Deploy Nexus4. Maven configures nexus private services and sets up cost-effective ...

Posted on Wed, 19 Feb 2020 14:52:04 -0500 by hejgelato

Building LNMP Architecture Based on centos 7

We all know that the LAMP platform is the most widely used web server architecture, of which "A" corresponds to Apache, a web service software. However, over time, more and more enterprises begin to use Nginx as a black horse, and LNMP or LEMP architecture has also been favored by more and more Lions.If you are idle, write about the ...

Posted on Wed, 19 Feb 2020 13:14:45 -0500 by gyoung

The function of uploading and compressing pictures implemented by Java [equal proportion compression or original size compression]

The example of this paper describes the function of uploading and compressing pictures in Java. To share with you for your reference, as follows: First look at the effect: Original: 1.33M   After treatment: 27.4kb   Key code: package codeGenerate.util; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Image; import java.awt. ...

Posted on Wed, 19 Feb 2020 13:01:56 -0500 by snapy