Re: OEM12c Target Host Config after delete

On Jan 18, 2013, at 4:44 PM, Ryan January wrote:

> I'm working on a migration from OEM11 to OEM12 and running into an issue
> with regards to host targets after removal from OEM12.
> As a test I performed a silent install of the agent to a test server,
> however neglected to specify the port I wanted to use.

I did that, also, and did the SR thing for a long time. In the end I uninstalled the agent software and reinstalled the agent. It was most definitely the easiest path because finding out how to clean up went nowhere. The point of the SR, and also the MOS forum quer, on my part, was to see if there was a way to clean up the mess. I never did get there. I did have an interesting exchange here:

https://communities.oracle.com/portal/server.pt?open=514&objID=224&mode=2&threadid=480580&aggregatorResults=T502648T496841T491988T480580T461590T461526T458037T451248T446352T25991&sourceCommunityId=248&sourcePortletId=268&doPagination=true&pagedAggregatorPageNo=1&returnUrl=https%3A%2F%2Fcommunities.oracle.com%2Fportal%2Fserver.pt%3Fopen%3Dspace%26name%3DCommunityPage%26id%3D25%26cached%3Dtrue%26in_hi_userid%3D46539%26control%3DSetCommunity%26PageID%3D0%26CommunityID%3D248%26&Portlet=All%20Community%20Discussions&PrevPage=Communities-CommunityHome

The take home is to verify all the ports before you install. My SR on the topic brought me this list of checks to verify you are ready to install, seems overboard, but...

Agent OMS Communication, on OMS host:

+ Verify the basic Network connectivity for Agent & OMS Servers: (Send me the output of the below commands)

From the Agent server:
> $ ping <IP adddress of the OMS machine>
> $ ping <hostname.domain of the OMS machine>
> $ ping <hostname of the OMS machine>

From the OMS server:
> $ ping <IP adddress of the Agent machine>
> $ ping <hostname.domain of the Agent machine>
> $ ping <hostname of the Agent machine>

+ Verify the Hostname resolution for Agent & OMS Servers: (Send me the output of the below commands)

From the Agent server:
> $ nslookup <IP adddress of the OMS machine>
> $ nslookup <hostname.domain of the OMS machine>
> $ nslookup <hostname of the OMS machine>

From the OMS server:
> $ nslookup <IP adddress of the Agent machine>
> $ nslookup <hostname.domain of the Agent machine>
> $ nslookup <hostname of the Agent machine>

+ Verify that the ports are not blocked: (Send me the output of the below commands)

Use telnet from the Agent machine:

> $ telnet omsmachine.domain 4889
> $ telnet omsmachine.domain 1159

From the OMS machine:

> $ telnet agentmachine.domain 3872

+ From Agent machine
wget http://<OMS_Hostname>:<EM_HTTP_UPLOAD_PORT>/empbs/genwallet wget http://<OMS_Hostname>:<EM_HTTPS_UPLOAD_PORT>/empbs/genwallet

NOTE: You will get EM_HTTP_UPLOAD_PORT and EM_HTTPS_UPLOAD_PORT from the output of 'emctl status oms -details' command above.

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