我有一个带有 Web 角色和 Worker 角色的 Windows Azure 云服务。我建立了一个网站,允许我对云服务执行各种管理功能(停止/启动、重启实例、添加实例、删除实例)。所有功能均通过 web api 执行。我的问题是,当我添加 Web 角色的实例时,辅助角色会重新启动。请注意,如果我通过 Azure 门户添加实例,则不会发生这种情况。该代码在所有其他方面都能正常运行。知道如何做到这一点,以便只有受影响的角色回收而不是所有角色回收?
我的代码:
public void AddInstance()
{
XDocument configDoc = this.GetDeploymentConfiguration();
var ns = configDoc.Root.GetDefaultNamespace();
configDoc.Root
.Elements( ns + "Role" )
.FirstOrDefault( r => r.Attribute( "name" ).Value.ToLower() == this.RoleName.ToLower() )
.Element( ns + "Instances" )
.Attribute( "count" )
.Value = ( int.Parse( configDoc.Root
.Elements( ns + "Role" )
.FirstOrDefault( r => r.Attribute( "name" ).Value.ToLower() == this.RoleName.ToLower() )
.Element( ns + "Instances" )
.Attribute( "count" )
.Value ) + 1 ).ToString();
string encodedString = Convert.ToBase64String( Encoding.UTF8.GetBytes( configDoc.ToString() ) );
this.SetDeploymentConfig( encodedString );
}
public XDocument GetDeploymentConfiguration()
{
string uri = string.Format( this.servicePropertiesOperationFormat, this.subscriptionID, this.serviceName, "production", "" );
ServiceManagementOperation operation = new ServiceManagementOperation( this.thumbprint, this.versionID );
var xdoc= operation.Invoke( uri );
var myelm = xdoc.Element( wa + "Deployment" ).Element( wa + "Configuration" );
var mystring= Encoding.UTF8.GetString( Convert.FromBase64String( myelm.Value ) );
return XDocument.Parse( mystring );
}
public string SetDeploymentConfig( string configurationFile )
{
string uri = string.Format( this.servicePropertiesOperationFormat, this.subscriptionID, this.serviceName, "production", "/?comp=config" );
ServiceManagementOperation operation = new ServiceManagementOperation( this.thumbprint, this.versionID );
string payloadString = string.Format(
@"<?xml version=""1.0"" encoding=""utf-8""?>
<ChangeConfiguration xmlns=""http://schemas.microsoft.com/windowsazure"">
<Configuration>{0}</Configuration>
</ChangeConfiguration>", configurationFile );
XDocument payload = XDocument.Parse( payloadString );
return operation.Invoke( uri, payload );
}