Abstract: Disclosed is an operation and maintenance method and system for automatically and uniformly managing nodes of bastion host. No matter distribution of user permission, daily deployment of machine monitoring and network monitoring or batch management of daily operation and maintenance, the operation and maintenance method and system can be abstracted as follows: master control dispatches a Master of a certain area node to issue and execute a certain task, and unified management is naturally achieved; the design concept can be continued subsequently.

Abstract: An operation and maintenance method and system for automatically and uniformly managing nodes of bastion host can be abstracted as follows: master control dispatches a Master of a certain area node to issue and execute a certain task, and unified management is naturally achieved; the design concept can be continued subsequently. A Master host in the node serves as a master controller of the node, and related contents including a tool script library, a crontab task and a configuration file are preset in a Redis of the node in advance; when a new machine is accessed to a certain node, the new machine performs Salt-Master access management of the node where the new machine is located, and the corresponding machine is controlled to complete the corresponding task through a takeover program; therefore, unified and automatic management is realized.

Abstract: A comprehensive management method and apparatus for application traffic, and an electric device are provided. The method includes: marking a traffic request with a label, and transmitting the traffic request with the label to a user access layer gateway; managing and configuring rules; receiving the traffic request; analyzing the traffic request based on a traffic analyzing rule; identifying and filtering the traffic request based on a traffic filtering rule; performing secondary processing on the traffic request based on a traffic processing rule; and forwarding the traffic request after secondary processing to an application proxy gateway based on a traffic forwarding rule; and performing an in-traffic proxy and an out-traffic proxy.

Abstract: The present invention relates to the technical field of medicine, in particular to a chondroitin sulfate polysaccharide, and a semi-synthetic preparation method therefor and the use thereof. A metal salt of the chondroitin sulfate polysaccharide provided by the present invention has an anti-inflammatory effect, and can be used for preparing a drug against inflammatory diseases. In particular, the metal salt of the chondroitin sulfate polysaccharide provided by the present invention has anti-inflammatory and bone-protecting effects, and can be used for preparing a drug against rheumatoid arthritis and for preparing a drug against osteoarthritis. The present invention provides a method for preparing the metal salt of the chondroitin sulfate polysaccharide, and the metal salt of the chondroitin sulfate polysaccharide with different degrees of sulfation can be obtained by semi-synthetic means in the present invention. The method is simple to operate and suitable for large-scale production.