MongoDB: No host in new replica set maps to this node

In the “trivial-errors” category, I imagine one will encounter this error when setting up MongoDB replica sets. > rs.initiate(rsconfig) { "ok" : 0, "errmsg" : "No host described in new configuration 1 for replica set replset maps to this node",…

Limit The Size of Your Core Files on Linux

So we all know that when troubleshooting MySQL crashes or any other processes in that regard, we simply enable core files to be dumped when the appropriate signal it triggered. To get the best results, we’d set the core file…

MySQL Backups, The Tools So Far

Backups is one of the most important part of any MySQL deployment, and nowadays, there’s a number of tools to choose from depending on how your organization implements them. The purpose of this post is to enumerate the main tools…