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If for any reason the system becomes unavailable, the initial action is to make sure we have switched from the ‘Primary(01)’ instance of OpdDB to the ‘Secondary(02)’ instance. This will allow the general user to continue working on OpsDB whist we continue with our investigations as to why it initially went down.
If we find that both instances have become unavailable, then contact with IT / SWD is of the upmost urgency as further investigation, steps, and decisions will have to be taken across departments (i.e. IT / SWD / OC) as to the best way forward to resolve these issues
Change the Domain Name System (DNS) entry for OpsDB (i.e. Move from one instance to another)
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To do this will require changes to be made by the systems administrator and is documented elsewhere.explained in the document below - this may require assistance from IT.
Service Reliability - design document (draft)
Once this has been done the system should then be available to the users again whilst more detailed investigation takes place.
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