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OCI OEM Installation – ( Using Market place Image )

 

Intro

Monitoring plays a major part in mission-critical environments. Most
businesses depend on IT infrastructure.  As the environments are critical
IT administrators need to make sure database and application servers are up
and running 24X7.  OEM (Oracle Enterprise Manager)  plays a
critical role in monitoring and administration, For the Oracle database this
best product for addressing issues proactively. This is the era most companies
thinking about migrating their IT infrastructure to the cloud environment.
Oracle Cloud Infrastructure (OCI) is the number one provider for Oracle
workloads and OCI has ease monitoring capabilities by introducing OEM (Oracle
Enterprise Manager) marketplace image.  

If you want to install OEM manually need to download and stage the software.
But marketplace image eases these installations.

In this article, I will elaborate on how we can install single-node OEM
installation using the OCI marketplace image. 

In OCI DBCS Oracle enterprise edition comes with  Diagnostics and
Tuning Packs.  I will talk about the licensing in a separate blog.

If you need to understand more details about the OEM installation, I have
mentioned the link which illustrates the OEM 13.5 in OCI
infrastructure.  

OCI supports two types of installations.

  • Single node
  • Multi-Node

https://docs.oracle.com/en/enterprise-manager/cloud-control/enterprise-manager-cloud-control/13.5/emcii/#Component-Descriptions-and-Definitions

1. Selecting Shape

For Single Node recommended shape is VM.Standard 2.8.

Figure 1: Support VM images.

The marketplace image uses the below-mentioned deployment path.

                   
                     
            Figure 2:  OMS installation
and log path.

2. Installation 

Search the 13.5 OEM image in the marketplace and select the 13.5 image to
launch the application. Now Oracle uses Terraform to install these
marketplace images.
                     
                     
         Figure 3:  13.5 Installation Image

                   
                     
         Figure 4:  13.5 Installation Launch

We need to feed the below information to complete the installation.
  • Deployment type 
  • VCN
  • Subnet
  • EM Compartment and Passwords.
  • Agent registration password.
  • Weblogic Admin and Node Passwords.
  • Enterprise Manager Instance type.
  • Repository database system passwords.
  • Bastion host details.
In section one we need to feed the number of OMS servers and select the
type of installation.
Figure 5: Deployment type.
In section two we need to add VCN information and Figure 7 shows the
subnet information.

                 
                   
                   Figure 6: Network installation.

                   
                   
                   
 

                   
                   
              Figure 7: VCN subnet
information.
Section three needs to provide the OEM Sysman password, agent registation
password, and WebLogic admin password.
Figure 8: Sysman password for OEM

                 
                   
          Figure 9: Agent and weblogic password.

Section four needs to provide the enterprise manager VM shape, boot volume
size, and availability domain and ssh key.

                   
                     
             Figure 10: VM shape
details. 

Section five needs to give the database repository sys and system
password. 

                     
                  

                     
                     
    Figure 11: Repository database
The last section needs to provide bastion host information.
 
Figure 12: Bastion Host.

                   
               
Error 

Installation failed when trying to create the bastion host. 

                   
                     
        Figure 13: Job failure.

Solution

To overcome this issue for bastion create a bastion instance and give that
bastion instance details.

Create bastion instance 

                   
                     
        Figure 14: Create a bastion instance.

Successful installation.

Once the installation is complete job will turn to green.

                     
                     
 

                     
                     
Figure 15: OEM installation status.
Now login to the OEM server via the bastion server.

Access OEM Console access 



[opc@oms1 ~]$ sudo su - oracle
Last login: Thu Nov  2 13:23:50 GMT 2023

Installation details of EM 13.5

Bastion IP: 192.18.144.45 - use bastion for OMS access
EM URL: https://10.1.2.5:7799/em
WebLogic URL: https://10.1.2.5:7101/console

Ports used by this deployment at /u01/app/oracle/em/middleware_135/install/portlist.ini
EM Middleware Home location: /u01/app/oracle/em/middleware_135
EM Agent Home location: /u01/app/oracle/em/emagent/agent_13.5.0.0.0
EM Diagnostic Kit (omsvfy): /u01/app/oracle/em/middleware_135/emdiag
EM Diagnostic Kit (repvfy): /u01/app/oracle/em/middleware_135/emdiag_rep
EM Diagnostic Kit (agtvfy): /u01/app/oracle/em/emagent/agent_13.5.0.0.0/emdiag

Oracle Database Home location: /u01/app/oracle/database/product
Oracle Database SID: emrep
DB Connect String: (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=oms1)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=empdb)))

This information is also available in the file /home/oracle/README.FIRST

To start all processes, as the user oracle, run the script /home/oracle/start_all.sh
To stop all processes, as the user oracle, run the script /home/oracle/stop_all.sh
[oracle@oms1 ~]$

Validate OEM Console access

Now you can log in to the OEM console and start working on the monitoring setup.

Conclusion

By leveraging Oracle Enterprise Manager in Oracle Cloud Infrastructure,
organizations can gain a unified and robust solution for managing their Oracle
environments in the cloud. This white paper aims to guide IT professionals and
decision-makers in effectively utilizing these tools to enhance the
performance, scalability, and security of their Oracle workloads in OCI.