Self healing distributed systems [Elektronische Ressource] / presented by Benjamin Satzger

G0HCNRSOOMKABUSelf-healing distributed systemsDissertationfor the degree ofDoctor of Natural Sciences (Dr. rer. nat.)submitted to theDepartment of Computer Scienceof the University of Augsburgpresented byBenjamin Satzgerin 2008Examiner: Prof. Dr. rer. nat. Theo UngererCo-examiner: Prof. Dr. rer. nat. Bernhard BauerDate of oral examination: 2008-12-18AbstractThe growing complexity of distributed systems demands for new ways ofcontrol. This work addresses self-healing in distributed environments. Theterm self-healing represents a quite new area of research and is used in afairly broad way, but can be seen as dynamic fault tolerance. This workproposes generic concepts and algorithms to build self-healing systems.The detection of node failures in distributed environments is a non-trivialproblem. Failure detectors are an important component of many fault tol-erant distributed systems. In this work a new failure detection algorithm isproposed with noteworthy features like a high flexibility and good perfor-mance. Furthermore an approach is presented to save the message overheadof failure detectors.New grouping algorithms are introduced in this work to enable a scalableself-monitoring property. This allows an autonomous installation of moni-toring relations in complex large scale distributed systems.A failure recovery engine based on automated planning, which manages adistributed system according to user-defined objectives, is proposed.