Tag: Security

EM 13c: How to Change Monitoring Credentials For WebLogic Domain Target

We changed WebLogic user password for enforcing security principal, then WebLogic domain targets show down on OEM. Hence we need update the monitoring credentials on OEM for WebLogic domain.

1) Verify the correct Admin Server hostname and password are correct:

EM Console > Middleware Targets > click the WebLogic Domain > WebLogic Domain dropdown menu > choose WebLogic Server Administration Console

Log in with this username/password

and note the Administration Server hostname as indicated in
- the url at the top of the page > https://<AdminServerFQDN>:<port>/console/...
and/or
- under Servers > AdminServer(admin) > Machine column shows Administration Server hostname

This step is necessary only if this WebLogic Domain is monitored by multiple agents:
2) Put the WebLogic Domain target under blackout:
Monitoring > Blackouts > Create… > > choose “Blackout” (Create)
Choose “Enable Full blackout…”
Add the WebLogic Domain target (select)

3) Modify the password for the WebLogic Server Administr Server using the hostname and password verified in step 1

There are 2 possible ways to navigate to the Monitoring Credentials in EM:

  • Setup (top right) > Security > Monitoring credentials > choose Oracle WebLogic Domain and click “Manage Monitoring Credentials” > choose the Domain and “Set Credentials”
    The is Domain and Node Manager credentials are set in separate places here
    Test and Save configuration

or

  • From the WebLogic Domain’s Home Page > under WebLogic Domain dropdown men > choose Target setup > Monitoring Credentials
    Both the Domain and Node Manager credentials are set on the same page
    Test and Save configuration

This step is necessary only if step 2 was implemented:
4) If Blackout has not already expired,

Monitoring > Blackouts > View by Blackout Name > choose blackout and “Stop”

5) Refresh WebLogic domain.
From WebLogic Domain home page > WebLogic Domain dropdown > choose “Refresh WebLogic Domain”

EM 13c: Updating Monitoring Credentials For WebLogic Domain Target shows “Password at Management Agent does not match error” (Doc ID 2610563.1)

Installing Oracle Management Agent in Silent Mode by Using the AgentPull Script

This is to demonstrate how to install 13.5 Oracle Management Agent in Silent Mode by Using the AgentPull Script .

Note: To install a Management Agent using the AgentPull script, you DO NOT need to download the Management Agent software onto the destination host. The AgentPull script performs this action automatically.

Get AgentPull script from OMS by running the following command, here we are going to install 13.5 agent on Linux platform.

On web to download AgentPull.sh script bu the following URL:
https:/OMS_HOST:OMS_PORT/em/install/getAgentImage

OR

$ cd /tmp
$ curl "https://OMS_HOST:OMS_PORT/em/install/getAgentImage" --insecure -o AgentPull.sh
$ chmod +x /tmp/AgentPull.sh

Identify the Platform by :

$ ./AgentPull.sh  -showPlatforms

Platforms       Version
Linux x86-64    13.5.0.0.0

Create a response file for installing the new agent:

$ cat /tmp/agent.properties
LOGIN_USER=sysman
LOGIN_PASSWORD=sysmanpasswd
PLATFORM="Linux x86-64"
AGENT_REGISTRATION_PASSWORD=abcd1234
AGENT_BASE_DIR=/u01/app/oracle/product/13.5.0/agent_1

Install OEM agent by running the following command now:

$ /tmp/AgentPull.sh RSPFILE_LOC=/tmp/agent.properties

The new agent should be installed and registered on OMS successfully.

But I got agent evaluation errors on OMS for newly installed agent. it is resolved through:

  • Disabled firewalld
  • EM 13c: Agent Shows Availability Evaluation Error with Message: Target data is currently being uploaded to the repository (Doc ID 2379296.1)