Centaurus is an open source software that facilitates the effective development of distributed computing applications in 5G cloud environment. This is necessary for efficient application development since Kubernetes is lacking multi-tenant capability and also in the provision of security. In this scenario, Centaurus can be used to build these gaps. In this project work, a new user and security management tool has been developed for Kubernetes platform using Centaurus. The major tools developed in this project work are User management tool using login feature, tool for clustering and role creation, Multi-Tenant Management tool, Namespace management and virtual machine management tool and a role based access control tool for enhancing the security of distributed applications. Moreover, for enhancing the security of applications developed using Centaurus, a new Role Based Access Control tool has been developed in this project work. This Role Based Access Control tool provides facilities for creating roles, assigning privileges, securing applications based on user privileges and finally the facility for revoking the privileges in order to enhance the security of the system. The major advantages of the system developed in this project work include the increase in Usability, flexibility and security of the applications.