Monitoring non-domain members with OM 2012

Monitoring non-domain members with OM 2012

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While the rest of the System Center community is in Vegas for MMS2012 I’m helping customers with their questions about System Center Operations Manager 2012. To be honest I’m little jealous on all the people who are in Vegas right now. Winking smile 

So I created some more detailed documentation on how to start monitoring your non-domain members (workgroup servers in your DMZ) in  OM2012.

It are still the same steps as in OM 2007 so if you already familiar with those steps it would be easy for you.

I created a simple Diagram to have a high-level overview on which steps are being executed on which machines.

Certificates_Workflow

    Environment:

    • OM12 RTM
    • Stand-Alone Windows Server 2008 CA (w2k8r2dc1.demo.stranger)
    • Two OM12 Management Servers (OM12MS01.demo.stranger and OM12MS02.demo.stranger)
    • Workgroup server in "DMZ" (OM12DMZ01.demo.dmz)

    Some important notes:

    • Server must have a FQDN, so if it is in a workgroup add a domain suffix manually.
    • The server being monitored must be able to resolve the FQDN of the OM2012 Management Server server.
    • Check if non-domain member server can connect to port 5723 from Management Server. (use telnet client)

    Guide info: http://technet.microsoft.com/en-us/library/dd362655.aspx

    Pre-reqs:

    It is assumed that you have AD CS installed, an HTTPS binding is being used, and its associated certificate has been installed. Information about creating an HTTPS binding is available in the topic How to Configure an HTTPS Binding for a Windows Server 2008 CA.

     

    High-Level steps:

  1. Download the Trusted Root (CA) certificate.
  2. Import the Trusted Root (CA) certificate
  3. Create a setup information file to use with the CertReq command-line utility.
  4. Create a request file.
  5. Submit a request to the CA using the request file.
  6. Approve the pending certificate request.
  7. Retrieve the certificate from the CA.
  8. Import the certificate into the certificate store.
  9. Import the certificate into Operations Manager using MOMCertImport.

    Step 1. Download the Trusted Root (CA) certificate

    • Log on to the computer where you installed a certificate; for example, the gateway server or management server.
    • Start Internet Explorer, and connect to the computer hosting Certificate Services; for example, https://<servername>/certsrv.
    • On the Welcome page, click Download a CA Certificate, certificate chain, or CRL.
    • On the Download a CA Certificate, Certificate Chain, or CRL page, click Encoding method, click Base 64, and then click Download CA certificate chain.
    • In the File Download dialog box, click Save and save the certificate; for example, Trustedca.p7b.
    • When the download has finished, close Internet Explorer.

    [OM12MS02.demo.stranger]

    Download a CA Certificate, certificate chain, or CRL

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    Step 2. Import the Trusted Root (CA) Certificate

    • On the Windows desktop, click Start, and then click Run.
    • In the Run dialog box, type mmc, and then click OK.
    • In the Console1 window, click File, and then click Add/Remove Snap-in.
    • In the Add/Remove Snap-in dialog box, click Add.
    • In the Add Standalone Snap-in dialog box, click Certificates, and then click Add.
    • In the Certificates snap-in dialog box, select Computer account, and then click Next.
    • In the Select Computer dialog box, ensure that Local computer: (the computer this console is running on) is selected, and then click Finish.
    • In the Add Standalone Snap-in dialog box, click Close.
    • In the Add/Remove Snap-in dialog box, click OK.
    • In the Console1 window, expand Certificates (Local Computer), expand Trusted Root Certification Authorities, and then click Certificates.
    • Right-click Certificates, select All Tasks, and then click Import.
    • In the Certificate Import Wizard, click Next.
    • On the File to Import page, click Browse and select the location where you downloaded the CA certificate file, for example, TrustedCA.p7b, select the file, and then click Open.
    • On the File to Import page, select Place all certificates in the following store and ensure that Trusted Root Certification Authorities appears in the Certificate store box, and then click Next.
    • On the Completing the Certificate Import Wizard page, click Finish.

    [OM12MS02.demo.stranger]

    Open Certificates Local Computer account MMC:

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    Import Certificate TrustedCA.p7b

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    Step 3. Create a setup information file to use with the CertReq command-line utility.

    • On the computer hosting the Operations Manager component for which you are requesting a certificate, click Start, and then click Run.
    • In the Run dialog box, type Notepad, and then click OK.
    • Create a text file containing the following content:
      [NewRequest]
      Subject="CN=<FQDN of computer you are creating the certificate, for example, the gateway server or management server.>"
      Exportable=TRUE
      KeyLength=2048
      KeySpec=1
      KeyUsage=0xf0
      MachineKeySet=TRUE
      [EnhancedKeyUsageExtension]
      OID=1.3.6.1.5.5.7.3.1
      OID=1.3.6.1.5.5.7.3.2
    • Save the file with an .inf file name extension, for example, RequestConfig.inf.
    • Close Notepad.

    [OM12MS02.demo.stranger]

    clip_image010

    Step 4. Create a request file to use with a stand-alone CA

    • On the computer hosting the Operations Manager component for which you are requesting a certificate, click Start, and then click Run.
    • In the Run dialog box, type cmd, and then click OK.
    • In the command window, type CertReq –New –f RequestConfig.inf CertRequest.req, and then press ENTER.
    • Open the resulting file (for example, CertRequest.req) with Notepad. Copy the contents of this file onto the clipboard.

    [OM12MS02.demo.stranger]

    clip_image011

    Step 5. Submit a request to a stand-alone CA

    • On the computer hosting the Operations Manager component for which you are requesting a certificate, start Internet Explorer, and then connect to the computer hosting Certificate Services (for example, https://<servername>/certsrv).
    • On the Microsoft Active Directory Certificate Services Welcome screen, click Request a certificate.
    • On the Request a Certificate page, click advanced certificate request.
    • On the Advanced Certificate Request page, click Submit a certificate request by using a base-64-encoded CMC or PKCS #10 file, or submit a renewal request by using a base-64-encoded PKCS #7 file.
    • On the Submit a Certificate Request or Renewal Request page, in the Saved Request text box, paste the contents of the CertRequest.req file that you copied in step 4 in the previous procedure, and then click Submit.
    • Close Internet Explorer.

    [OM12MS02.demo.stranger]

    Request a certificate

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    Advanced

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    Select Submit a certificate request by using a base-64-encoded CMC or PKCS #10 file, or submit a renewal request by using a base-64-encoded PKCS #7 file.

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    Step 6. approve the pending certificate request

    • Log on as a certification authority administrator to the computer hosting Active Directory Certificate Services.
    • On the Windows desktop, click Start, point to Programs, point to Administrative Tools, and then click Certification Authority.
    • In Certification Authority, expand the node for your certification authority name, and then click Pending Requests.
    • In the results pane, right-click the pending request from the previous procedure, point to All Tasks, and then click Issue.
    • Click Issued Certificates, and confirm the certificate you just issued is listed.
    • Close Certification Authority.

    [W2K8R2DC1.demo.stranger]

    Click Pending Request in Certificate Authority

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    Click on Issue

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    Step 7. retrieve the certificate

    • Log on to the computer where you want to install a certificate; for example, the gateway server or management server.
    • Start Internet Explorer, and connect to the computer hosting Certificate Services (for example, https://<servername>/certsrv).
    • On the Microsoft Active Directory Certificate Services Welcome page, click View the status of a pending certificate request.
    • On the View the Status of a Pending Certificate Request page, click the certificate you requested.
    • On the Certificate Issued page, select Base 64 encoded, and then click Download certificate.
    • In the File Download – Security Warning dialog box, click Save, and save the certificate; for example, as NewCertificate.cer.
    • On the Certificate Installed page, after you see the message that Your new certificate has been successfully installed, close the browser.
    • Close Internet Explorer.

    [OM12MS02.demo.stranger]

    View status of pending certificate request

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    Save certificate

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    Download certificate

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    Step 8. import the certificate into the certificate store

    • On the computer hosting the Operations Manager component for which you are configuring the certificate, click Start, and then click Run.
    • In the Run dialog box, type cmd, and then click OK.
    • In the command window, type CertReq –Accept NewCertificate.cer, and then press ENTER

    [OM12MS02.demo.stranger]

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    Step 9. import the certificate into Operations Manager using MOMCertImport

    • Log on to the computer where you installed the certificate with an account that is a member of the Administrators group.
    • On the Windows desktop, click Start, and then click Run.
    • In the Run dialog box, type cmd, and then click OK.
    • At the command prompt, type <drive_letter>: (where <drive_letter> is the drive where the Operations Manager 2007 installation media is located), and then press ENTER.
    • Type cd\SupportTools\i386, and then press ENTER.

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    Note

    On 64-bit computers, type cd\SupportTools\amd64

    • Type the following:
      MOMCertImport /SubjectName <Certificate Subject Name>
    • Press ENTER.

    [OM12MS02.demo.stranger]

    MOMCertImport /SubjectName OM12MS02.demo.stranger

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    Check if everything is ok

    Open the certificate that you installed on management/gateway server. Click on Details Tab and check the Serial Number.

    Now navigate to HKLM\Software\Microsoft\Microsoft Operations Manager\3.0\Machine Settings and check the value of ChannelCertificateSerialNumber. Serial number of certificate should be listed backwards here in registry.

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    Open registry

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    Tada!

    Pre-reqs on DMZ server:

    Make sure you have installed the OM12 Agent first before starting.

     

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    Let's check the eventlog

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    Repeat steps for OM12DWZ01 server in workgroup

    High-Level steps:

    • Download the Trusted Root (CA) certificate.
    • Import the Trusted Root (CA) certificate
    • Create a setup information file to use with the CertReq command-line utility.
    • Create a request file.
    • Submit a request to the CA using the request file.
    • Approve the pending certificate request.
    • Retrieve the certificate from the CA.
    • Import the certificate into the certificate store.
    • Import the certificate into Operations Manager using MOMCertImport.

    [OM12DWZ01.demo.dmz]

    Step 1. Download the Trusted Root (CA) certificate.

    clip_image042

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    Step 2. Import the Trusted Root (CA) certificate

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    Step 3. Create a setup information file to use with the CertReq command-line utility.

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    Step 4. Create a request file to use with a stand-alone CA

    CertReq –New –f RequestConfig.inf CertRequest.req

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    Step 5. Submit a request to a stand-alone CA

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    Step 6. approve the pending certificate request

    [W2K8R2DC1.demo.stranger]

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    Step 7. retrieve the certificate

    [OM12DMZ01.demo.dmz]

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    Step 8. import the certificate into the certificate store

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    Step 9. import the certificate into Operations Manager using MOMCertImport

    MOMCertImport /SubjectName OM12DMZ01.demo.dmz

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    Final step is approving agent

    Check Security Settings in Operations Console.

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    Wait for Agent to turn up in Pending Approval folder

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    End result:

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Have fun at MMS for those who are in Vegas, and for those who are not, well…

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  • Nice to see the steps so fully itemised.

    thx Stefan.

    And don't worry about Vegas....Think of all the money u saved :)

    JB

  • Thanks for the excellent guide Stefan :)

  • This is a great blog post. Thank you very much for the fantastic insight and we really appreciate the time you took to write this. Thanks again.<a href="http://www.rangatel.com">internet phone service providers</a>

  • Thanks for the post. I get that security is important hence the use of certs but is it only me that thinks that this approach by MS is utterly ridiculous, over complicated and onerous, especially if you have many distinct DMZs or client sites to monitor. Maybe in this case its the wrong tool to use. Surely they can come up with a better option.

  • Hi Stefan,

    Excellent guide, thank you.

    In step 7, you download a certificate with cer extention and then import it on step 8. In step 9, you use the MomCertImport tool to import to certificate, but as you know you cannot import cer file with the tool; the certificate must be in pfx format [the error you will get is "Certificate file name should have pfx extension."]

    Am I missing something?

    Thanks!

  • Excellent guide! This works like charm...Great work!!!

  • Sarav,

    Glad you like it. Thanks for the feedback.

    Stefan

  • Thanks so much for this. It worked

  • This is the best guide I have come across to explain this and boost confidence. Also helps with a little troubleshooting of the certificates.

    Brilliant!

    thanks

  • Hi Greg,

    Thanks for the feedback. Appreciate it!

    /Stefan

  • I understand the part about creating the certificate for the MS and the DMZ server and importing them. But, do you import the MS cert to the DMZ server and the DMZ cert to the MS server?

  • Hi Stefan

    Excellent article. Thanks for it. I wanted to ask a quick question, can I use this procedure to monitor domain joined machines? The domain I want to monitor has only got a one way trust with the domain that has the SCOM management server. The SCOM management server domain's credentials work in the other domain but not vice versa. I am relative newby to SCOM and will appreciate any help.

    Regards

    DG

  • Hi DG,

    Please check this discussion on TechNet. social.technet.microsoft.com/.../crossdomain-agent-monitoring-with-scom-2007-r2-oneway-forest-trusts

    "The OpsMgr Connector could not connect to MSOMHSvc/scommgmt.DomainA.local because mutual authentication failed.  Verify the SPN is properly registered on the server and that, if the server is in a separate domain, there is a full-trust relationship between the two domains.

    Don't forget that after the (push)install of the agent, the agent initiates the communication. So the agent is connecting to the MS (in domain A), and there is no trust (A doesn't trust B), how can the MS verify with Kerberos that the agent is really who it says it is.... it can't

    If you don't want to use Certificates, then you need a full trust model (this can be done through setting up two one-way trusts)

    "

    So yes you need to use the procedure I described here.

    /Stefan

  • Hey Stefan... the steps need to be performed on both the Management server and the Server you want to monitor in DMZ?

  • Hi Stefan Thanks once again for your blog and response. I have one quick question. I want to manage one workgroup machine using SCOM 2012, and used this procedure. However I still get the error that the client is untrusted. I noticed one thing though that as per the procedure, Step 5. Submit a request to a stand-alone CA, in my environment, on the page to paste the copied key, I get an additional option to choose a certificate template. I have left is as the default, which is "User". This is the same for both my management server and my workgroup server. However on my management server I can see under my personal store the certificate has been issued to my userid whereas on the workgroup server I get issued with a personal certificate which is issued to my management server. I think this is the discrepancy that is causing the error. I tried manually copying the certificate from my management server to the workgroup server and then run "Momcertimport.exe /SubjectName " from the workgroup server. But this didn't help.I am using Windows 2012 server OS on both the management server and the workgroup machine. Any help will be greatly appreciated!!! Thanks