MySQL Group Replication is here and with it comes the need to install and configure the underlying group communication toolkit that supports it: Corosync. Corosync is a well known and reliable Group Communication System that is used in such applications as Pacemaker.
In term of support, we develop MySQL Group Replication based on Corosync version 1.4.6, so this tutorial is based on this version. Regardless of this, no known problems are know to exists when using newer versions, but no extensive testing has been done on those.
Along with Corosync we also encourage the use of NSS to better secure your data that is transmitted in the group.
To install Corosync, you can rely on your packet manager for most distributions or compile it from source.
==> From the package manager