Server is unavailable

[LPG57]

Hello,

After migrating to Scada 5.4.1, I can’t log in on the Scada web page, get the message “Server is unavailable”.

I used the same user as I used with the old version (admin).

ScadaserverSVC log:
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> ScadaServerService 5.1.0.2 is started
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Check the existence of the data directories is completed successfully
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Check the existence of the configuration database files is completed successfully
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Input channels are read from the configuration database. Active channel count: 43
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Ouput channels are read from the configuration database
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Users are read from the configuration database
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Formulas are read from the configuration database
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> The formulas source code has been compiled
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Connection listener is started
2017-11-22 22:21:50 <SERVER7><SYSTEM><ACT> Start server
2017-11-22 22:21:51 <SERVER7><SYSTEM><ACT> Current data are loaded
2017-11-22 22:21:51 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 22:21:51 <SERVER7><SYSTEM><ACT> The user ScadaComm is successfully authenticated
2017-11-22 22:22:03 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 22:22:03 <SERVER7><SYSTEM><ACT> The user ScadaComm is successfully authenticated
2017-11-22 22:22:30 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 22:22:30 <SERVER7><SYSTEM><ACT> Unsuccessful attempt to authenticate the user
2017-11-22 22:42:25 <SERVER7><SYSTEM><ACT> Disconnect client 127.0.0.1
2017-11-22 22:48:37 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 22:48:37 <SERVER7><SYSTEM><ACT> Unsuccessful attempt to authenticate the user
2017-11-22 22:48:37 <SERVER7><SYSTEM><ACT> Disconnect client 127.0.0.1
2017-11-22 22:49:04 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 22:49:04 <SERVER7><SYSTEM><ACT> Unsuccessful attempt to authenticate the user
2017-11-22 23:09:08 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 23:09:08 <SERVER7><SYSTEM><ACT> Unsuccessful attempt to authenticate the user
2017-11-22 23:09:08 <SERVER7><SYSTEM><ACT> Disconnect client 127.0.0.1
2017-11-22 23:09:22 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-22 23:09:22 <SERVER7><SYSTEM><ACT> Unsuccessful attempt to authenticate the user
2017-11-22 23:09:22 <SERVER7><SYSTEM><ACT> Disconnect client 127.0.0.1
2017-11-24 18:25:00 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-24 18:25:00 <SERVER7><SYSTEM><ACT> Unsuccessful attempt to authenticate the user
2017-11-24 18:25:00 <SERVER7><SYSTEM><ACT> Disconnect client 127.0.0.1

ScadaServerSvc.txt:
SCADA-Server
————
Started : 22/11/2017 22:21:50
Execution time : 1.20:12:49
State : normal
Version : 5.1.0.2

Connected Clients (1)
———————
1. 127.0.0.1; ScadaComm (Application); activity: 18:34:39

ScadaWeb.log
2017-11-22 23:09:08 <SERVER7><DefaultAppPool><ACT> User information has been added. IP address: ::1. Session: 54ao1isfna1zamq3si5xtkqo
2017-11-22 23:09:22 <SERVER7><DefaultAppPool><ACT> Connect to SCADA-Server “localhost”
2017-11-22 23:09:22 <SERVER7><DefaultAppPool><ERR> User name or password is incorrect
2017-11-22 23:09:22 <SERVER7><DefaultAppPool><ACT> Disconnect from SCADA-Server
2017-11-22 23:09:22 <SERVER7><DefaultAppPool><EXC> Error refreshing the tables of the configuration database:
Scada.ScadaException: Unable to receive the configuration database modification time.
at Scada.Client.DataCache.RefreshBaseTables()
2017-11-22 23:09:22 <SERVER7><DefaultAppPool><ERR> Unable to connect to SCADA-Server. Try again.
2017-11-22 23:09:22 <SERVER7><DefaultAppPool><ERR> Unsuccessful login attempt: peder – Server is unavailable. IP address: ::1
2017-11-22 23:29:22 <SERVER7><DefaultAppPool><ACT> User information has been removed. IP address: ::1. Session: 54ao1isfna1zamq3si5xtkqo
2017-11-24 18:25:00 <SERVER7><DefaultAppPool><ACT> Connect to SCADA-Server “localhost”
2017-11-24 18:25:00 <SERVER7><DefaultAppPool><ERR> User name or password is incorrect
2017-11-24 18:25:00 <SERVER7><DefaultAppPool><ACT> Disconnect from SCADA-Server
2017-11-24 18:25:00 <SERVER7><DefaultAppPool><EXC> Error refreshing the tables of the configuration database:
Scada.ScadaException: Unable to receive the configuration database modification time.
at Scada.Client.DataCache.RefreshBaseTables()
2017-11-24 18:25:00 <SERVER7><DefaultAppPool><ACT> User information has been added. IP address: 83.142.103.76. Session: lxw0v20243tol44phkjh34ul
2017-11-24 18:25:10 <SERVER7><DefaultAppPool><ERR> Unable to connect to SCADA-Server. Try again.
2017-11-24 18:25:10 <SERVER7><DefaultAppPool><EXC> Error refreshing the tables of the configuration database:
Scada.ScadaException: Unable to receive the configuration database modification time.
at Scada.Client.DataCache.RefreshBaseTables()
2017-11-24 18:25:10 <SERVER7><DefaultAppPool><ERR> Unable to connect to SCADA-Server. Try again.
2017-11-24 18:25:10 <SERVER7><DefaultAppPool><ERR> Unsuccessful login attempt: admin – Server is unavailable. IP address: 83.142.103.76

[Mikhail]

Hi,

Please open C:\SCADA\ScadaWeb\config\WebSettings.xml in a text editor and check CommSettings section. These are the connection parameters for the web app. Can you provide them here?

[Mikhail]

Also check CPU load of ScadaServerSvc.exe.

[LPG57]

Hello Mikhail,

The CPU load of ScadaServerSvc.exe is currently 0
and here is the WebSettings.xml:

<?xml version=”1.0″ encoding=”utf-8″ ?>
– <WebSettings>
<Param name=”SrezRefrFreq” value=”5″ descr=”Values refresh frequency, sec” />
<Param name=”EventRefrFreq” value=”5″ descr=”Events refresh frequency, sec” />
<Param name=”EventCnt” value=”50″ descr=”Display events count” />
<Param name=”EventFltr” value=”true” descr=”Set ‘View’ events filter by default” />
<Param name=”DiagBreak” value=”90″ descr=”Distance between points on the diagramm to make a break, sec” />
<Param name=”CmdEnabled” value=”true” descr=”Enable commands” />
<Param name=”SimpleCmd” value=”false” descr=”Simple commands sending” />
<Param name=”RemEnabled” value=”false” descr=”Enable to remember logged on user” />
</WebSettings>

[LPG57]

and here is the CommSettings.xml

<?xml version=”1.0″ encoding=”utf-8″ ?>
– <CommSettings>
<Param name=”ServerHost” value=”localhost” descr=”SCADA-Server host or IP address” />
<Param name=”ServerPort” value=”10000″ descr=”SCADA-Server TCP port number” />
<Param name=”ServerUser” value=”ScadaWeb” descr=”User name for the connection” />
<Param name=”ServerPwd” value=”12345″ descr=”User password for the connection” />
<Param name=”ServerTimeout” value=”10000″ descr=”Response timeout, ms” />
</CommSettings>

I tried also with user “ScadaWeb”, but the result was the same

[Mikhail]

The format of the WebSettings.xml file was changed. You should take the new one from the distributive.
You don’t need CommSettings.xml for the web app no more.

[LPG57]

Following the instructions above solved the login problem – thanks’

However, when logged in the following message appear:
“The requested view does not exist or you have insufficient rights to access it.”

I can open the tables in the table editor.

[LPG57]

I solved the issue above, found out that there were differences in the Interface table between the old and new version.

Now I only wonders how the “Rights” table “Interface Objects” field is populated? In the drop down list, there is only the demo objects, not the tables I built?

[LPG57]

Mikhail

The issue with the rights table is solve, but now I have a new problem:

When connecting with the web station, it works OK while doing it directly on the server itself, but when doing it from a PC outside the domain, I can login, but the tables are not updated with data and the message “Error updating current data” appear. After 10 secs, I’m thrown out.

Login performed 10:21 was on localhost and succeeded, login performed 10:23 was from a remote PC and failed.

ScadaWeb.log
2017-11-27 10:21:54 <SERVER7><DefaultAppPool><ACT> Request SCADA-Server state
2017-11-27 10:21:54 <SERVER7><DefaultAppPool><ACT> Disconnect from SCADA-Server
2017-11-27 10:21:54 <SERVER7><DefaultAppPool><ACT> Connect to SCADA-Server “localhost”
2017-11-27 10:21:54 <SERVER7><DefaultAppPool><ACT> User information has been added. IP address: ::1. Session: b3knixrzaedaicjuaoku3wml
2017-11-27 10:21:57 <SERVER7><DefaultAppPool><ACT> Login: admin (Administrator). IP address: ::1
2017-11-27 10:21:57 <SERVER7><DefaultAppPool><ACT> User information has been updated. IP address: ::1. Session: b3knixrzaedaicjuaoku3wml
2017-11-27 10:22:27 <SERVER7><DefaultAppPool><ACT> Logout: admin. IP address: ::1
2017-11-27 10:23:22 <SERVER7><DefaultAppPool><ACT> Request SCADA-Server state
2017-11-27 10:23:22 <SERVER7><DefaultAppPool><ACT> Login: admin (Administrator). IP address: 199.64.75.186
2017-11-27 10:23:22 <SERVER7><DefaultAppPool><ACT> User information has been updated. IP address: 199.64.75.186. Session: lxw0v20243tol44phkjh34ul

ScadaServerSvc.log
2017-11-27 10:21:54 <SERVER7><SYSTEM><ACT> Connect to client 127.0.0.1
2017-11-27 10:21:54 <SERVER7><SYSTEM><ACT> The user ScadaWeb is successfully authenticated
2017-11-27 10:21:57 <SERVER7><SYSTEM><ACT> Check user admin name and password. Result: passed
2017-11-27 10:23:22 <SERVER7><SYSTEM><ACT> Check user admin name and password. Result: passed

[Mikhail]

Hi,

Does it work from another PC in the same network?
Please press F12 in a browser and provide logs (or screenshots) from the Console and Network tabs.

[LPG57]

Hello,

If I’m connect using http://servername7scada from another computer within the domain, it works OK. But if I’m from the same computer use the external https://domainname/scada, it doesn’t work.

[Mikhail]

Hi,
If you need HTTPS, you have to do special settings on IIS. See this

[LPG57]

There was already a certificate for port 443 for this web site, so when creating another one, I couldn’t log on remotely anymore. (Running SBS 2011)

[Mikhail]

HTTPS is more tricky. To solve this issue, a remote connection is required – this is a commercial service.

[Mikhail]

Does https://localhost/ work?

[Author]

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