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1. Heartbeat Introduction Heartbeat is an open-source Linux-based, widely used high-availability cluster system. Since 1999, many versions have been released, it is currently the most successful example of the open-source Linux-ha project and has

Maintaining the longest normal system running time is increasingly important for the on-demand computing success. Unfortunately, many off-the-shelf high availability (HA) solutions are expensive and require specialized technologies. Five articles in

1. The need for TCP keepalive1) Many firewalls are automatically closed for idle sockets2) for non-normal disconnection, the server is not able to detect. In order to reclaim resources, a detection mechanism must be provided.2. Factors that cause

Basic Environment preparation;650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/58/C0/wKioL1S7pgGApQ4qAAFru3qSIDE579.jpg "title=" 1.png " Width= "height=" 245 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:500px;height:245px; "alt="

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/73/B9/wKioL1YFQDbS5kT3AAE3pr6YBa8619.jpg "title=" Image.png "alt=" Wkiol1yfqdbs5kt3aae3pr6yba8619.jpg "/>Primary and Standby Mutual resolution set multiple IPs# vim/etc/hosts192.168.7.2 css01

Article Title: heartbeat dual-host hot standby service setup on Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open

Heartbeat IntroductionThe Heartbeat project is an integral part of the LINUX-HA project, which implements a highly available cluster system. Heartbeat service and cluster communication are two key components of a highly available cluster, and in the

Many application-layer protocols have a heartbeat mechanism, usually the client sends a packet to the server every other time, notifying the server that it is still online and transmitting some data that may be necessary. Typical protocols for using

1. When a client logs on to the server and establishes a persistent connection, the server usually checks whether the client is still connected. If the connection is disconnected, the server no longer provides services to the client, This server

ObjectiveRecent research on the implementation of Android push, studied for two days a night, with a little harvest, write down both for sharing, but also to spit groove. What needs to be explained is that some things are biased to the bottom of the