disaster-recovery

Closed . This question needs to be more focused. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it focuses on one problem only by editing this post . What's the difference between failover and disaster recovery? Vinko Vrsalovic Failover: When one machine fails, another machine (usually in the same location) takes over and resumes service Disaster recovery: When Godzilla destroys your data center, you do have alternative locations to keep providing your service and protocols/means for the other location to know how to keep delivering

My developer committed a huge mistake and we cannot find our mongo database anyone in the server. Rescue please!!! He logged into the server, and saved the following shell under ~/crontab/mongod_back.sh : And then he run ./mongod_back.sh , then there were lots of permission denied , then he did Ctrl+C . Then the server shut down automatically. He tried to restart the server, then he got an grub error: He then contacted AliCloud, the engineer connected the disk to another working server, so that he could check the disk. Then, he realized that some folders have gone, including /data/ where the

How do you configure Apache Cassandra to allow for disaster recovery, to allow for one of two data-centres to fail? The DataStax documentation talks about using a replication strategy that ensures at least one replication is written to each of your two data-centres. But I don't see how that helps once the disaster has actually happened. If you switch to the remaining data-centre, all your writes will fail because those writes will not be able to replicate to the other data-centre. I guess you would want your software to operate in two modes: normal mode, for which writes must replicate across

I have a Windows box which has taken it into it's head to delete most of a Git repository (must have tripped the Important Work Detector ;). All I have left (that I can find) is the objects. I'm not sure how complete the collection of objects is, either. Is it possible to recover things from just the objects? As far as I can tell, the object tree is intact. All the packs and loose objects are in place; I just don't have the metadata to convince Git. The first thing that I would try is to initialize a new repository with git init . Then I'd copy the objects directory from the dead repository