Mysql2::Error (Too many connections)
Mysql2::Error (Too many connections):
mysql2 (0.3.20) lib/mysql2/client.rb:70:in `connect'
mysql2 (0.3.20) lib/mysql2/client.rb:70:in `initialize'
activerecord (4.2.5) lib/active_record/connection_adapters/mysql2_adapter.rb:18:in `new'
activerecord (4.2.5) lib/active_record/connection_adapters/mysql2_adapter.rb:18:in `mysql2_connection'
activerecord (4.2.5) lib/active_record/connection_adapters/abstract/connection_pool.rb:438:in `new_connection'
activerecord (4.2.5) lib/active_record/connection_adapters/abstract/connection_pool.rb:448:in `checkout_new_connection' ...
May occur on older VMs provided by Easy Software. You need to raise the maximal number of connections in MySQL setting.
Setting is in v /etc/my.cnf or /etc/mysql/my.cnf
[mysqld]
max_connections = 100
Restart mysql afterwards.
sudo service mysql restart