by XTIVIA | May 1, 2020 | Blog, Database
SUMMARY: Modern computing professionals must clearly distinguish between the physical processor socket, the independent execution core, and the dependent thread to accurately calculate a system’s true processing capacity in environments dominated by parallel...
by XTIVIA | Apr 21, 2020 | Blog, MongoDB
If you’re upgrading a ReplicaSet from a version before 3.2 of MongoDB to a new version, you will run into this warning when connecting to the shell. Protocol Version 0 is not supported in MongoDB 4.0. Checking Protocol Compatibility To verify which protocol version...
by XTIVIA | Apr 2, 2020 | Blog, MongoDB
If you’re running a 3 member ReplicaSet that uses an Arbiter as its third member, then you will be presented with this warning when you connect to the shell. When a node goes down in a PSA architecture (Primary, Secondary, Arbiter) the wiredTiger storage engine...
by XTIVIA | Mar 26, 2020 | Blog, MongoDB
MongoDB-CR is the challenge response authentication mechanism used in MongoDB versions before 4.0. In version 4.0 this mechanism is removed and you must upgrade to the new mechanism SCRAM before you upgrade to 4.0. You will receive this warning if you have launched...
by XTIVIA | Mar 24, 2020 | Blog, MySQL
When connection requests to a MySQL database from a given host are interrupted, MySQL keeps track of the number of successive interruptions in the host cache. MySQL will eventually block the host, giving them a message [1129] “Host ‘host_name’ is...
by XTIVIA | Mar 20, 2020 | Blog, MongoDB
When you’re upgrading from previous versions before 3.6 you might notice this warning showing up in the shell when you start the server for the first time. This warning is telling you that you don’t have an IP bound to your instance, preventing any...
