Shell Module: Execute Any Command The shell module allows you to execute shell commands on remote hosts. For example, to view the list of files in the current directory on a remote host, you can use: ansible <host_server> -m shell -a "ls -l" <host_server> is the host or host group you want to operate on, … Read more
Mastering Ansible: Building an Automation Operations Platform from Scratch, Achieving 8x Efficiency Ansible is a powerful automation operations tool in the DevOps field that can help us automate repetitive operational tasks, such as batch configuring servers and deploying applications. When used correctly, it can boost your efficiency by up to 8 times. Next, I will … Read more
The BLE protocol is established by the Bluetooth Special Interest Group and is widely used in short-range communication fields with low power requirements, such as smartwatches, fitness bands, smart lighting, and mice. The protocol is relatively mature. The SparkLink technology, introduced by Huawei, is a new wireless communication standard, with the SLE (SparkLink Low Energy) … Read more
1. Basic Introduction Ansible is a configuration management and application deployment tool developed in Python, which is now also shining in the field of automation management. It integrates the advantages of many established operation and maintenance tools, and Ansible can basically achieve the functionalities that Pubbet and Saltstack can provide. Pubbet and Chef are both … Read more
We previously discussed the basic installation, and today we will talk about usage.If the plugin is configured correctly and the device is functioning properly, after refreshing the interface list, find the corresponding device port, double-click it, and you will see the following interface.Wireshark main interface1. Selecting the Sniffing DeviceSniffing device selectionThis shows our sniffing devices. … Read more
Source: ICT New Horizons – Smart City Special Edition, original title: “Shenzhou Agriculture: How NB-IoT Applications Empower Agricultural Digitalization,” by Zhang Dandan, President of Shenzhou Agriculture DC Agriculture. Trends and Potential of Agricultural Digitalization Compared to other industries, the current agricultural sector in China remains quite traditional, with relatively backward application of information technology. As … Read more
The network structure of LoRaWAN application terminals (hereinafter referred to as SN) and gateways (hereinafter referred to as GW) is a star topology, where communication between SN and GW is point-to-point. Generally, a GW has 8 uplink channels and 1 downlink channel, and this capability of the GW determines that it can only send downlink … Read more
The ecosystem of LoRaWAN is quite good, with open-source or free resources available for nodes, gateways, and servers. Among them, the free server www.thethingsnetwork.org is very popular, with nearly ten thousand gateways deployed worldwide. Today, we will discuss how to use this server. You need to register an account at https://www.thethingsnetwork.org (hereinafter referred to as … Read more
The Internet of Things (IoT) communication protocols are complex, but two “star players” stand out: One is NB-IoT, represented by telecom operators. The other is LoRa, represented by internet giants. Last month, Tencent made a high-profile entry into the LoRa Alliance, bringing more attention to LoRa. This month, even China Unicom from the telecom camp … Read more
1NovemberToday, I will analyze the relevant information regarding LoRaWAN roaming. This will be a brief introduction, and for specific technical details, please refer to the LoRaWAN protocol. LoRaWAN roaming is divided into two types: Passive Roaming and Hand-over Roaming. The LoRaWAN server consists of two parts: the Network Server (abbreviated as NS) and the Join … Read more