How can I quickly converge the IPV4/V6 address usage information in an enterprise?
In many internal cases, the following events occur:
1. You need to track the usage of the overall IP address space;
2. You need to know which address is idle to
Note:This article from the old boy linux O & M training-Advanced Course video content, the content of this article is a series of content, more share information see: http://oldboy.blog.51cto.com/2561410/1169084
1) Video practices (better
Web services, also known as WWW services, are the most widely used services on the Internet.The Web Service adopts the "Browser/Server" mode. The client uses a browser to access the Web page stored on the server, and the client and the server use
Directory:IntroductionProfileApplication CasesDHCP is short for Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol). DHCP can be used to automatically allocate TCP/IP information to client hosts, such as IP addresses, subnet
Virtual User Logon mode: maps login users to the specified system account (/sbin/nologin) to access FTP resources, which ensures security.
1. Install the required Program
1. Install the development environment and mysql database
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Monitoring Software: zabbixDemand Analysis: according to the system monitoring, alarms are generated when the CPU usage exceeds 80%, and the traffic curve reaches the threshold. However, the traffic fluctuates greatly in a short period of time,
Author: Fan Jun Frank Fan) Sina Weibo: @ frankfan7: frankfan7
IOPS is the most commonly used Performance Measurement Parameter in storage design. But isn't IOPS enough to help us make design decisions? There are many misunderstandings in this
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Note:
Purpose:
1. The cluster is designed with a virtual machine capacity of 70 to 300 units. It occupies 1 Cabinet and is
DRBD Introduction Distributed Replicated Block Device (DRBD) is a software-implemented, non-shared, storage and replication solution for image Block Device content between servers.
Data image: Real-Time, transparent, and returned after all servers
A problem occurred a few days ago. In the external network, the virtual machine in SCVMM in the Intranet is accessed through the portal self-service and cannot be connected. The system prompts that the IP address cannot be resolved. As a result, I
DNS-BIND build Master/Slave DNS server for load balancing and Redundancy
------ Coexistence of selinux and DNS
Another blog address: www.rsyslog.org
Theoretical Analysis:
1. DNS type, master/slave architecture;
The configuration file of the DNS type
When the Exchange Server user mailbox is moved, by default, each client has two concurrent access roles. When we perform large-scale user migration, such as upgrading the Exchange Server, the number of two concurrent jobs is often insufficient. Next
The Web Farm of the IIS Web server uses the environment to create a Web Farm composed of the IIS Web server and set its website to www.itchenyi.com. We will enable Windows NLB directly on the two IIS Web servers in the figure. The NLB operation mode
1. Use the nginx installation script to explain how to install nginx
#! /Bin/bash
# Author zhangyifei
#2013 2.27
# Email zyfforlinux@163.com
# Download the source code package
Cd/usr/local/src
Wget
Refined self-built Clusters
Part 1: Cluster System Configuration
§ 1. 1: System InstallationHere we use CentOS5.5 X64 as an example to build a cluster. We won't go into details about system installation. Remember to choose gcc, g ++, and gfortran
1 Software Package Manager1.1 Main functions: Package A software binary program, library file, configuration file, and help file into a file. You can also package the file, expand the binary program to the relevant path according to the specified
This article Description: nginx achieves high Availability Based on keepalived, proxy web server based on its own proxy function, and implements load balancing.
Lab environment: redhat5.8Experiment topology: Two nginx + keepalived servers and two
Samba is a software component for interactive operations between Linux, Unix, and Windows. Samba is a free open source software based on the GPL protocol. Samba has been providing secure, stable, and fast file and print services for Windows, OS/2,
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