raspberry pi ntp server

In my previous article, I talked about how to build a high-availability system: Two Raspberry Pi deploy the GlusterFS cluster file system, and it becomes a fault-tolerant file server. In this article, we will build another Fault-Tolerant Service Based on this high-availability system: Build a simple Web server cluster.

gases. There are four pins:VCC: input 5V positive currentGND: Connect the power supply negativeDo:ttl high-low level outputAO: Analog Voltage output TTL Output sensitivity adjustment:This potentiometer is only tuned for TTL, which is the do output sensitivity.The clockwise adjustment sensitivity increases, the counter-clockwise adjustment sensitivity reduces. Has the following advantages:??? Wide range of Detection??? Highly sensitive, fast and appropriate rec

http://blog.csdn.net/xqf1528399071/article/details/52192134——————————————————————————————————————————————————————————In response to the questions raised by Powerdruy, decided to make a big change to this articleRefer to these two text http://man.lupaworld.com/content/linux/Debian_server_setting/smb.html#4.4Http://www.debianadmin.com/file-server-configuration-in-debian-using-samba.htmlThis article is only the most basic configuration of samba, that is,

"/" route (the default port of the bottle is 8080) Similarly, the second route path is "/cmd", that is, access http: // 192.168.0.10: 8080/cmd to access the second route. The last sentence: run (host = "0.0.0.0") is to call the run method of bottle to create an http server so that we can access our interface through a browser. Below I will explain in detail the functions of these codes: The role of the first route is to throw the browser an HTML (ind

Raspberry Pi configures apache php and Raspberry Pi apachephp Apache + MySql + Php. 1, InstallationApache Apache can use the following command to install sudo apt-get install apache2 The default Apache path is/var/www/ The configuration file path is/etc/apache2/ You can use sudo nano/etc/apache2/ports. conf to modif

GuideLike many linuxjournal readers, I have also lived in today's very popular "tech nomads" life, between networks, from one access point to another, where we are in different parts of the real world and remain connected to the Internet and other networks we use on a daily basis. Recently I have found that more and more network environments are starting to block common ports such as SMTP (port), SSH (Port 22), and so on. When you walk into a café and want to SSH into one of your servers to do s

Securi-Pi: Uses Raspberry Pi as a stepping stone for securityGuideLike many readers of LinuxJournal, I have also lived a very common "technology nomadic" life today, from one access point to another between networks, we are in different places in the real world, but we are always connected to the Internet and other networks that are commonly used. Recently, I hav

Preface The Raspberry Pi official has provided an image list: Http://www.raspbian.org/RaspbianMirrors, but because of the server in foreign countries, we install and update the software is always not satisfactory speed, and sometimes a time-out connection caused the installation failure.So there are some mirror stations, such as Ali Open source image, NetEase op