Mariadb galera cluster master node started and reporting 2 nodes but second node service says activating mariadb
I had the same issue with 2 nodes configured. mariadb-10-1-galera-cluster-error.
When using Galera Cluster, it’s recommended that the cluster have at least three nodes. In a two-node cluster, when there is a conflicting pair of transactions, it could lead to a split-brain situation. Also, when one node fails, the remaining node will become non-operational. (Two-Node Clusters)