Allow configuration of MySQL max_connections setting

The number of connections created to the database depends on the
number of running processes and this is a factor of both the nodes
count and the cores count. We make it configurable so it can be
increased when needed.

Change-Id: I41d511bde95d0942706bf7c28cd913498ea165fb

1 files changed, 5 insertions, 0 deletions

diff --git a/overcloud-without-mergepy.yaml b/overcloud-without-mergepy.yaml
index 4258fe0d..0bc585ce 100644
--- a/overcloud-without-mergepy.yaml
+++ b/overcloud-without-mergepy.yaml
@@ -410,6 +410,10 @@ parameters:
         lower level default.
     type: number
     default: 0
+  MysqlMaxConnections:
+    description: Configures MySQL max_connections config setting
+    type: number
+    default: 1024
   NeutronDnsmasqOptions:
     default: 'dhcp-option-force=26,1400'
     description: Dnsmasq options for neutron-dhcp-agent. The default value here forces MTU to be set to 1400 to account for the tunnel overhead.
@@ -734,6 +738,7 @@ resources:
           KeystoneSSLCertificateKey: {get_param: KeystoneSSLCertificateKey}
           MysqlClusterUniquePart: {get_attr: [MysqlClusterUniquePart, value]}
           MysqlInnodbBufferPoolSize: {get_param: MysqlInnodbBufferPoolSize}
+          MysqlMaxConnections: {get_param: MysqlMaxConnections}
           MysqlRootPassword: {get_attr: [MysqlRootPassword, value]}
           NeutronPublicInterfaceIP: {get_param: NeutronPublicInterfaceIP}
           NeutronFlatNetworks: {get_param: NeutronFlatNetworks}