_mysql-proxy.html.md.erb

<%if vars.product_short == "PAS" %>
## <a id="proxy"></a>MySQL Proxy
<%end%>
<%= vars.product_full %> uses a proxy to send client connections
to the healthy MySQL database cluster nodes in a highly available cluster plan.
Using a proxy gracefully handles failure of nodes, enabling fast,
failover to other nodes within the cluster. When a
node becomes unhealthy, the proxy closes all connections to the unhealthy node
and re-routes all subsequent connections to a healthy node.

The proxy used in <%= vars.product_short %> is Switchboard.
Switchboard was developed to replace HAProxy as the proxy tier for the high
availability cluster for MySQL databases in PCF.

<% if vars.product_short == "MySQL for PCF" %>

<%= image_tag "switchboard-all-healthy.png" %>

<%end%>

Switchboard offers the following features:

- **MySQL Server Access**

    MySQL clients communicate with nodes through this network port.
    These connections are automatically passed through to the nodes.

- **Switchboard and API**

    Operators can connect to Switchboard to view the state of the nodes.
    
    <% if vars.product_short == "MySQL for PCF" %>
    For more information about monitoring proxy health status, see
    [Monitoring Node Health](./monitor-health.html).
    <%end%>