我已经坚持了很长一段时间,没有运气自己推进它。
我正在尝试使用 MSI 令牌从 Azure 应用服务连接到 EF CodeFirst 托管数据库。
当我使用 ARM 部署应用服务时,我生成了一个输出,确保它创建了一个服务主体:
{
"principalId":"98f2c1f2-0a86-4ff1-92db-d43ec0edxxxx","
tenantId":"e6d2d4cc-b762-486e-8894-4f5f440dxxxx",
"type":"SystemAssigned"
}
在 Kudu 中,环境变量显示它正在安装:
MSI_ENDPOINT = http://127.0.0.1:41239/MSI/token/
MSI_SECRET = 7C1B16Fxxxxxxxxxxxxx
我在 Azure 门户中提供了一个连接字符串,如下所示:
Data Source=nzmoebase0000bt.database.windows.net;Initial Catalog=nzmoebase0001bt;Connect Timeout=300;MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Connection Timeout=300;
我已将主体作为所有者添加到数据库中。
Note: I cannot do the same for the master db.
令牌被添加到 DbContext 中,如下所示:
正在使用以下方式添加令牌:
static async Task AttachAccessTokenToDbConnection(IDbConnection dbConnection)
{
SqlConnection sqlConnection = dbConnection as SqlConnection;
if (sqlConnection == null)
{
return;
}
string msiEndpoint = Environment.GetEnvironmentVariable("MSI_ENDPOINT");
if (string.IsNullOrEmpty(msiEndpoint))
{
return;
}
var msiSecret = Environment.GetEnvironmentVariable("MSI_SECRET");
if (string.IsNullOrEmpty(msiSecret))
{
return;
}
// To get around:
// "Cannot set the AccessToken property if 'UserID', 'UID', 'Password', or 'PWD' has been specified in connection string."
var terms = new[] {"UserID","Password","PWD=","UID=" };
string connectionString = dbConnection.ConnectionString;
foreach (var term in terms)
{
if (connectionString.Contains(term, StringComparison.InvariantCultureIgnoreCase))
{
return;
}
}
string accessToken = await AppCoreDbContextMSITokenFactory.GetAzureSqlResourceTokenAsync();
sqlConnection.AccessToken = accessToken;
}
启用跟踪后,令牌为:
.eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI....
使用 jwt.io 解码的结果:
{
"typ": "JWT",
"alg": "RS256",
"x5t": "FSimuFrFNoC0sJXGmv13nNZceDc",
"kid": "FSimuFrFNoC0sJXGmv13nNZceDc"
}.{
"aud": "https://database.windows.net/",
"iss": "https://sts.windows.net/e6d2d4cc-b762-486e-8894-4f5f440dxxxx/",
"iat": 1522783025,
"nbf": 1522783025,
"exp": 1522786925,
"aio": "Y2NgYPjNdyJd9zrzpLavJSEzNIuPAAA=",
"appid": "d1057cea-461b-4946-89a9-d76439c2xxxx",
"appidacr": "2",
"e_exp": 262800,
"idp": "https://sts.windows.net/e6d2d4cc-b762-486e-8894-4f5f440dxxxx/",
"oid": "98f2c1f2-0a86-4ff1-92db-d43ec0edxxxx",
"sub": "98f2c1f2-0a86-4ff1-92db-d43ec0edxxxx",
"tid": "e6d2d4cc-b762-486e-8894-4f5f440dxxxx",
"uti": "59bqKWiSL0Gf0bTCI0AAAA",
"ver": "1.0"
}.[Signature]
我Persist Security Info = True
根据网上的几个建议添加了,但这并没有检测到。
Data Source=nzmoebase0000bt.database.windows.net;Initial Catalog=nzmoebase0001bt;MultipleActiveResultSets=False;Persist Security Info = True;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;
我得到的错误是:
[InvalidOperationException: This operation requires a connection to the 'master' database. Unable to create a connection to the 'master' database because the original database connection has been opened and credentials have been removed from the connection string. Supply an unopened connection.]
有没有人使用 CodeFirst、Migrations 和 MSI 连接到数据库?在这一点上,在真正被卡住了几个星期之后,我开始怀疑这是否可能。
感谢您的帮助——即使只是证明它可以工作,对于初学者来说。