Modify Oracle 11gR2 RAC SCAN listening and local listening ports

Modify the port SCAN listens on Modify the port SCAN listens on to 3521, and the port local listens on remains the same, at 1521: [root@web1 ~]# srvctl modify scan_listener -p 3521 1 View the listening status after modification: [grid@web2 ~]$ lsnrctl status LISTENER_SCAN1 LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 06-May-2 ...

Added by shinstar on Sat, 25 May 2019 22:58:12 +0300

Nginx feature validation - reverse proxy / load balancing / page caching / URL redirection

The original article was published in cu: 2016-08-25 Reference documents: Nginx reverse proxy, load balancing, page caching, URL rewriting, etc. http://freeloda.blog.51cto.com/2033581/1288553 Nginx reverse proxy/load balancing simple configuration: http://www.cnblogs.com/jacktang/p/3669115.html Nginx reverse proxy, back-end web how to get re ...

Added by franklyn on Fri, 24 May 2019 01:57:43 +0300

Analysis of core files with gdb and examples of common gdb command operation

** 1. Overview** In practical software development projects, it is unavoidable that problems arise in the program. I still remember the first time I met the procedure after I joined the work. Previous experience tells me that the more panicked we are, the more unsolvable the problem will be. We need to calm ourselves down before we find solutio ...

Added by webtech123 on Thu, 23 May 2019 01:57:35 +0300

Zabbix4.0 monitors multi-instance java runs through JMX

(1) Introduction1. Introduction to JMXThe full name of JMX is Java Management Extensions (Java Management Extensions), which is a framework for implanting management functions for applications, devices, systems, etc. JMX can flexibly develop seamlessly integrated systems, networks and service management across a range of heterogeneous operatin ...

Added by buzz on Tue, 21 May 2019 19:11:39 +0300

Read-Write Separation of Mysql Master-Slave Configuration

I. Several schemes for master-slave replication of MySQL Database read-write separation is an indispensable and important function for large-scale systems or high-volume Internet applications. From the database point of view, for most applications, from centralization to distribution, the most basic requirement is not the bottleneck of data s ...

Added by cap2cap10 on Tue, 21 May 2019 03:18:58 +0300

Chapter 2 of python Foundation

Chapter 2 of Python Foundation Binary system Character encoding Basic Data Type - Number Basic Data Type - String Basic Data Type - List Basic data type - tuples Variable, immutable data types and hash Basic Data Type - Dictionary Basic Data Type - Set Binary system Binary system is a kind of system used in computing technology. The binary ...

Added by Cornelia on Mon, 20 May 2019 04:30:59 +0300

CentOS Builds redis-cluster Cluster

Preparations for Cluster Construction Create redis-cluster directory under / usr/local mkdir /usr/local/redis-cluster Previously, if you installed a stand-alone version, you could copy the installed directory. Installation reference for stand-alone version Copy the redis directory as a whole into redis-cluster and ...

Added by lookielookies on Mon, 20 May 2019 03:45:24 +0300

ZooKeeper Series (2): Install and set up ZooKeeper environment

ZooKeeper has three installation modes: standalone, pseudo-cluster, and cluster: standalone mode: Install ZooKeeper on only one machine and start only one ZooKeeper instance. Pseudo Cluster: Open multiple ZooKeeper instances on one machine to simulate a cluster.This is achieved by loading different profiles and assigning different data direct ...

Added by konqest on Mon, 20 May 2019 02:51:17 +0300

Rundeck Integration: An Example of CLI Approach Integration

This article describes how to use Rundeck Cli in Rundeck and how to operate Rundeck Cli with specific examples. Summary Info Rundeck's Cli profile information is shown in the following table: project Explain Official website http://rundeck.org Open/Closed Source Open Source Source code management address https://git ...

Added by sun14php on Sun, 19 May 2019 17:14:11 +0300

Linux System Diagnosis Tips (15): How to Fix File System Damage with Start-Stop Problems

Digression Let's start with what file systems are and what tools are needed. file system Nowadays, there are many kinds of storage and complex stacks. But the user's direct interface is still file system . For Linux and the open source community, a lot of software is also dependent. file system . MySQL and PostgreSQL databases, for example, c ...

Added by mortona on Sun, 19 May 2019 08:56:28 +0300