[MESOS-8776] Prevent destructive modifications to resource provider configurations

• Type: Task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.6.0
• Component/s: agent
• Assignee: Unassigned
• Reporter: Benjamin Bannier
• Created: 11/Apr/18 20:11
• Updated: 11/Apr/18 20:11

Description

Resource providers on an agent are configured via the --resource_provider_config_dir flag. The agent reads these configurations which each currently contain a ResourceProviderInfo and uses them start a matching resource provider.

As previous state is read from an agent path under resource_providers derived from both type and name, see src/slave/paths.hpp, incompatible edits to at least these fields can lead to no recoverable state to be found which would trigger creating of a new resource provider. This resource provider would then e.g., not recover any persisted operations on the managed resources. This can be problematic, e.g., when data volumes reserved for a certain role (possibly containing sensitive data) would be offered without that reservation.

We should investigate what can be done to prevent such misconfigurations.

Issue Links

• relates to: MESOS-7558 Add resource provider validation