Tomcat multi-instance deployment Install jdk [root@localhost ~]#systemctl stop firewalld.service [root@localhost ~]#setenforce 0 [root@localhost ~]#cd /opt [root@localhost opt]#ls apache-tomcat-8.5.16.tar.gz jdk-8u91-linux-x64.tar.gz rh [root@localhost opt]#tar xf jdk-8u91-linux-x64.tar.gz [root@localhost opt]#ls apache-tomcat-8.5.16.tar.gz jdk1.8.0_91 jdk-8u91-linux-x64.tar.gz rh [root@localhost opt]#mv jdk jdk1.8.0_91/ jdk-8u91-linux-x64.tar.gz [root@localhost opt]#mv jdk1.8.0_91/ /usr/local/ [root@localhost opt]#ls /usr/local/ bin etc games include jdk1.8.0_91 lib lib64 libexec sbin share src [root@localhost opt]#cd […]
Tag: instances
Exploring Reflection: Three Elegant Ways to Create Class Instances
AI painting about SD, MJ, GPT, SDXL encyclopedia To share interview questions, click here to reach me directly 2023Python interview questions 2023 latest interview collection link 2023 major factory interview questions PDF PDF version of interview questions java, python interview questions Practical Project: Best Practices for AI Text OCR Recognition AI Gamma generates a direct […]
The three cores of React component instances-refs
0x00 Preface CTF encryption and decryption collection CTF Web Collection Cybersecurity knowledge base Traceability related All the tools in this article can be followed by Haoyuedangkongw official account and send keywords to obtain tools. 0x01 character refs refs is the id in the document 1. Get ref class Demo extends React.Component {<!– –> render() {<!– […]
Analysis of registered service instances being offline on nacos
Recently, an executor (nacos client) of the xxl_job framework in production was frequently disconnected from the nacos server due to a small allocation of memory. After the disconnection, although the client service did not go down, it was unable to re-register to nacos. The server comes up. Problem location: Check the server log; I found […]
Tomcat multiple instances and load balancing
Tomcat multiple instances and load balancing 1. Tomcat multiple instances 1.1. Install JDK 1.2. Install tomcat 1.3. Configure tomcat environment variables 1.4. Modify the main configuration file in tomcat 1.5. Modify startup script and shutdown script 1.6. Start tomcat and view 2. Nginx + Tomcat load balancing, dynamic and static separation 2.1. Deploy Nginx load […]
Tomcat multiple instances + Tomcat load balancing, dynamic and static separation (Nginx linkage)
Multiple instances + linkage 1. Tomcat multiple instances 1.1 What is Tomcat multi-instance? 1.2 Configuration ideas 1.3 Configuration implementation 1.3.1 Install jdk 1.3.2 Install tomcat 1.3.3 Configure tomcat environment variables 1.3.4 Modify port number 1.3.5 Modify the startup.sh and shutdown.sh files in each tomcat instance and add tomcat environment variables 1.3.6 Start /bin/startup.sh in each […]
How to run Cassandra on AWS EC2 instances: An InDepth G
Author: Zen and the Art of Computer Programming 1. Introduction Cassandra is a distributed NoSQL database management system designed for scalability and high availability with low latency. It provides robust support for clusters spanning multiple data centers, fault tolerance, automatic replication, and flexible data model design. Cassandra has been used in mission critical applications such […]
centos7 implements multiple instances of MYSQL
Since this is to implement multiple instances of mysql, I won’t explain too much about the installation here. If necessary, you can read the installation tutorials of other bloggers (the yum source of mysql can be installed by downloading the rpm package from the mysql official website) MySQL :: Download MySQL Yum Repository Leading part […]
Spring Series Part 5: Do you all know these ways to create bean instances?
Content of this article Create a bean object by calling the constructor through reflection Create bean objects through static factory methods Create bean objects through instance factory methods Create bean objects through FactoryBean There are four common ways to create bean instance objects within the Spring container. Create bean objects by calling the constructor through […]
Dolphinscheduler schedules and generates workflow instances. No task instances are generated. Solution process one result (or null) to be returned by selectOne(), but found: 2
background: The problem occurred during online scheduling and when manually starting tasks, the master reported the following error: Several tasks were found to be invalid. [ERROR] 2022-08-01 09:59:57.988 org.apache.dolphinscheduler.server.master.runner.WorkflowExecuteThread:[244] – handler error: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2 at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:78) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440) at […]