Jump! In our Trivadis Oracle Cloud Infrastructure training environments, we never use direct access to an application or database server by a public IP address. For this case, we use an Oracle Linux based bastion host which acts as a jump host. For security reasons, I never put any SSH keys on a bastion host to connect from there to the target instances. If your bastion host is compromitted, your SSH keys are lost! In one of the last trainings, some participants had problems with. So I decided to blog about. This blog post shows you the different methods to connect to an Oracle Cloud Infrastructure private/public network by using a bastion host. SSH Keys Oracle Cloud Infrastructure Linux based…
Read MoreOracle Cloud Infrastructure – Stop your 20c Preview Database Instance Node by OCI CLI now – Great MOS Experience
This was really great experience with the guys from My Oracle Support and Oracle teams. Seven days ago I raised an SR that there was no possibility to stop a 20c Preview database instance node if it’s not in use. No chance to stop a 20c Preview Instance There was no stop action in the Oracle Cloud Infrastructure UI and not in OCI CLI. The only way was to terminate an 20c preview instance. If I tried to stop a database node in the OCI CLI, this message occurs: Operation is not allowed for Preview Database version. mbg@LTMBG03:~$ oci db node stop –db-node-id ocid1.dbnode.oc1.eu-zurich-1.ab5heljr6uogrcbvopqvw4ppihq3hl75nh6e1234567891234567 ServiceError: { “code”: “NotAuthorizedOrNotFound”, “message”: “Operation is not allowed for Preview Database version.”, “opc-request-id”: “0627623907F948C6AB50645F4D5086B9/A5A12041A7E77DDD5551AF4146963663/2A14DAC00F90DC2A657DA47E7856F0F1”, “status”:…
Read MoreOracle Cloud Infrastructure – Network Troubleshooting with VCN Flow Logs
Do have a problem with a connection from or to your private/public subnet? There is a new functionality called VCN Flow Logs available. It collects information about network traffic (source/target) in the Oracle Cloud Infrastructure VCN subnet. At the moment (05/03/2020), this functionality is not available in all regions and I did not find any command in OCI CLI, but will be rolled out. There is no documentation available at docs.cloud.oracle.com. Link to the OCI blog announcement and demo: https://blogs.oracle.com/cloud-infrastructure/announcing-vcn-flow-logs-for-oracle-cloud-infrastructure LA I have registered our company tenant for the Cloud Native Limited Availability Program to get this brand new feature available. Watch here: https://blogs.oracle.com/cloud-infrastructure/announcing-limited-availability-of-oracle-cloud-infrastructure-logging-service Use Case A public compute instance with private IP 10.92.10.2 is not able to connect to…
Read MoreOracle Enterprise Manager 13c Release 4 – Time to Upgrade – First Experiences
The roll-out of the newest Oracle Enterprise Manager 13 Release 4 is a few days old, about time to try out the upgrade process in my ESXi lab environment. First: This blog post about the OEM upgrade process is based on my own experience. Software https://www.oracle.com/enterprise-manager/downloads/cloud-control-downloads.html Documents https://docs.oracle.com/en/enterprise-manager/cloud-control/enterprise-manager-cloud-control/13.4/emupg/index.html The Environment Oracle Enterprise Manager 13.3 running on Oracle Linux 7.6 – OEM Patchlevel January 2020 – Non-HA Oracle Enterprise Edition Repository 19.6.0 Single Tenant Database Oracle Restart / ASM 19.6.0 Additional Oracle Linux Server with 19.3.0 Container Databases All targets up and running My Oracle Support connected Software staged directory in /u01/app/oracle/stage/em13cr4 and permission changed to execute bin file (chmod u+x em13400_linux64.bin). oracle@kestenholz:/u01/app/oracle/stage/em13cr4/ [oms1303] ll total 12429656 drwxr-xr-x 2 oracle oinstall…
Read MoreOracle Cloud Infrastructure – Change a Compute Instance Shape – Tested
There is a new feature available in Oracle Cloud infrastructure since the 13th of January 2020, now you can change the shape of a Compute instance. It replaces all the manual steps like stopping the existing instance, create a new one, attach the block device etc. – this is a short summary how it works. From the OCI Release Notes : You can change the shape of a virtual machine (VM) instance without having to rebuild your instances or redeploy your applications. This lets you scale up your Compute resources for increased performance, or scale down to reduce cost. My existing Compute Instance The existing machine has the shape VM-Standard2.1 – one OCPU and 15GB of memory. [opc@webserverpublic01 ~]$ cat…
Read More