The ENABLE/DISABLE COMPUTE NODE syntax is used enable/disable a specified proxy instance
EnableDisableComputeNode ::=
  ('ENABLE' | 'DISABLE') 'COMPUTE' 'NODE' instanceId
instanceId ::=
  string
instanceId needs to be obtained through SHOW COMPUTE NODES syntax query
The currently in-use proxy instance cannot be disabled
DISABLE COMPUTE NODE '734bb086-b15d-4af0-be87-2372d8b6a0cd';
ENABLE COMPUTE NODE '734bb086-b15d-4af0-be87-2372d8b6a0cd';
ENABLE, DISABLE, COMPUTE, NODE
