Abstract:With the rapid progress and widespread application of cloud computing technology, enterprise information construction has developed rapidly. To explore the key technologies of cloud platform operation and maintenance for large-scale microservice applications and to improve the operation and maintenance guarantee capability of cloud platform under microservice architecture, research was conducted on the operation and maintenance work and related technologies of the microservice cloud platform. Firstly, it introduces the background and characteristics of the current microservice cloud platform Operations & Maintenance(O&M) work, and analyses the current status of domestic and international research on cloud platform O&M work. According to the characteristics of the microservice cloud platform O&M work, the cloud platform O&M technology is mainly divided into three categories: monitoring operation and maintenance, resource scheduling, and fault analysis, respectively reviewing the research status of each category of O&M technology, and analyzing the advantages and disadvantages of different methods in each category of O&M technology. Finally, the future development trend of cloud platform O&M is analyzed in the light of industrial requirements, the shortcomings of current technologies and the characteristics of microservice cloud platform O&M work, and the important O&M technologies of the microservice cloud platform are also summarized and foreseen.