Web部署3.6：防火墙后的性能问题
问题描述：
使用TeamCity和WebDeploy，我将网站远程发布到生产服务器。这里有一个部署的例子日志：Web部署3.6：防火墙后的性能问题
[15:48:24][Step 11/18] Deploying to Web Server 1 (2s)
[15:48:24][Deploying to Web Server 1] Deploying to Web Server 1:
[15:48:24][Deploying to Web Server 1] Info: Using ID 'e7a113e6-5dbd-4ed4-887a-156af88f7403' for connections to the remote server.
[15:48:25][Deploying to Web Server 1] Info: Using ID 'ad9a7a1a-0adb-45f6-bdde-e4d7157b4eb1' for connections to the remote server.
[15:48:26][Deploying to Web Server 1] Total changes: 0 (0 added, 0 deleted, 0 updated, 0 parameters changed, 0 bytes copied)
[15:48:26][Step 11/18] Deploying to Web Server 2 (3s)
[15:48:26][Deploying to Web Server 2] Deploying to Web Server 2:
[15:48:26][Deploying to Web Server 2] Info: Using ID 'b8218d7a-5fa0-4152-8e6b-c467ee86267e' for connections to the remote server.
[15:48:28][Deploying to Web Server 2] Info: Using ID '2f02aa87-5e5c-4305-90d5-f82a549ffca3' for connections to the remote server.
[15:48:29][Deploying to Web Server 2] Total changes: 0 (0 added, 0 deleted, 0 updated, 0 parameters changed, 0 bytes copied)
[15:48:29][Step 11/18] Deploying to Web Server 3 (2s)
[15:48:29][Deploying to Web Server 3] Deploying to Web Server 3:
[15:48:29][Deploying to Web Server 3] Info: Using ID 'e5457237-4632-46da-a7b6-3cb1a7d5078e' for connections to the remote server.
[15:48:31][Deploying to Web Server 3] Info: Using ID '28b3725e-00e6-43b4-a014-523279678d9b' for connections to the remote server.
[15:48:32][Deploying to Web Server 3] Total changes: 0 (0 added, 0 deleted, 0 updated, 0 parameters changed, 0 bytes copied)
我们感动我们的部署代理到一个新的机器，但现在有运行WebDeploy在我们所有的网站巨大的延迟，即使它（有效）部署了什么：
[15:46:53][Step 11/18] Deploying to Web Server 1 (17s)
[15:46:53][Deploying to Web Server 1] Deploying to Web Server 1:
[15:46:54][Deploying to Web Server 1] Info: Using ID 'e55ed14a-0557-4300-b25d-3fbb39907b3b' for connections to the remote server.
[15:47:10][Deploying to Web Server 1] Info: Using ID '0cdfb2b4-e435-492a-9157-caee13b27962' for connections to the remote server.
[15:47:11][Deploying to Web Server 1] Total changes: 0 (0 added, 0 deleted, 0 updated, 0 parameters changed, 0 bytes copied)
[15:47:11][Step 11/18] Deploying to Web Server 2 (18s)
[15:47:11][Deploying to Web Server 2] Deploying to Web Server 2:
[15:47:12][Deploying to Web Server 2] Info: Using ID '53691c36-9c65-4ce4-aad9-3f8e52fefd87' for connections to the remote server.
[15:47:28][Deploying to Web Server 2] Info: Using ID 'afccf558-e1f4-4abf-90c6-c1bbef6c4434' for connections to the remote server.
[15:47:29][Deploying to Web Server 2] Total changes: 0 (0 added, 0 deleted, 0 updated, 0 parameters changed, 0 bytes copied)
[15:47:29][Step 11/18] Deploying to Web Server 3 (18s)
[15:47:29][Deploying to Web Server 3] Deploying to Web Server 3:
[15:47:30][Deploying to Web Server 3] Info: Using ID '35a92c74-ac2b-4d02-af1d-6eac7a53405a' for connections to the remote server.
[15:47:46][Deploying to Web Server 3] Info: Using ID '0e73566a-8692-4849-9a79-3c4afec7089b' for connections to the remote server.
[15:47:47][Deploying to Web Server 3] Total changes: 0 (0 added, 0 deleted, 0 updated, 0 parameters changed, 0 bytes copied)
首先，“使用ID [guid]连接到远程服务器”步骤似乎每次都有非常可预测和一致的15秒延迟。
用netstat，这条信息站了出来：
TCP 192.168.XXX.XXX:58265 23.47.144.26:80 SYN_SENT
[msdeploy.exe]
在旧机器，它不会尝试访问该IP，所以这是出乎意料的。我们将尝试在我们的下一个维护时段修复防火墙规则，让它通过以查看是否可行，但Web Deploy尝试在此处做什么？
答
开放Port 80允许msdeploy.exe给家里打个电话（或者是在那里做什么）修复了15秒的延迟问题。部署时间现在降到前一台机器上所见的时间（每台服务器2-3秒）。