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Oracle Release Update 19.9 – Lab Update Time (Grid Infrastructure Standalone & RDBMS)

The Oracle Release update 19.9 for Linux is available since a few days. Time to upgrade my lab environment at home which consists of the following components:

  • Oracle Grid Infrastructure Standalone 19.8.0 with ASM Normal Redundancy – +ASM
  • Oracle 19.8.0 RDBMS as Repository for Oracle Enterprise Manager – EMREPO

The running 19.8 Environment

Output from Trivadis base environment tool TVD-Basenv(TM).

Patch Download, Transfer and Extract

I have downloaded the Combo which contains the RU for Grid Infrastructure and Oracle Java Virtual Machine.

  • COMBO OF OJVM RU COMPONENT 19.9.0.0.201020 + GI RU 19.9.0.0.201020(Patch 31720429)
    • OJVM RELEASE UPDATE 19.9.0.0.0(Patch 31668882)
    • GI RELEASE UPDATE 19.9.0.0.0(Patch 31750108)

The local stage directory with the extracted files:

OPatch

OPatch in Grid Infrastructure home directory has to be version 12.2.0.1.19 or later.

Version Verification

+ASM – Grid Infrastructure Standalone

EMREPO – RDBMS

CheckConflictAgainstOHWithDetail

+ASM – Grid Infrastructure Standalone

EMREPO – RDBMS

Take care, this line here produces an error:

According My Oracle Support Note opatch CheckSystemSpace Command For Grid Infrastructure RU Fails With: “This command doesn’t support System Patch” (Doc ID 2634165.1), this error can be ignored and the line removed in future patch apply actions.

CheckSystemSpace

To check for space, we create there two files which contain the patch directories. The checks have to be successful.

+ASM – Grid Infrastructure Standalone

EMREPO – RDBMS

Release Update Apply

As first action I stop the OEM. The I run opatchauto as user root. Grid Infrastructure and RBDMS components are stopped, started and patch automatically one by one. Here is the full output of the patch apply where you can see the executed steps. In my lab environment, it took about 20 minutes.

Version Verification

+ASM – Grid Infrastructure Standalone

EMREPO – RDBMS

As you can see, the components were updated successfully. Time to start Oracle Enterprise Manager 13c Release 4 Update.

OJVM Apply

At the end, the OJVM patch has to applied. Set ORACLE_SID and ORACLE_HOME according the RDBMS environment.

Stop the RDBMS with srvctl

Change to OJVM Patch Directory

Apply the OJVM Patch

Startup Upgrade – Container Database and Pluggable Database – in SQL*Plus

Run datapatch

Shutdown Database in SQL*Plus

Start the RDBMS with srvctl

Version Verification

EMREPO – RDBMS

Summary

There were no issues. Ok, it’s just a GI Standalone environment. But this was really a pleasure.

The Grafana Plugins for Oracle Cloud Infrastructure Monitoring are back!

In September 2019 I wrote a blog post how to monitor an Oracle Cloud Infrastructure Autonomous database with Grafana plugin oci-datasource. But some weeks after publication, the plugin was not available on the Grafana page anymore. And only Oracle and Grafana had a clue why.

Now everything will be fine now. Since the 6th of October, there are two new Grafana plugins available for download. They both don’t require a Grafana enterprise account.

The first one is a successor of the former oci-datasource plugin, the second allows to get logs from OCI resources like Compute or Storage. As an infrastructure guy, let’s install the Oracle Cloud Infrastructure Metrics on an local Oracle Enterprise Linux 8 installation!

Install and configure the OCI CLI

Link: https://docs.cloud.oracle.com/en-us/iaas/Content/API/SDKDocs/cliinstall.htm

OS User oci and Installer

As OS user root, create a new user mentioned oci, change to new created user oci.

Run the installer script.

In this demo case, I use the default settings and the tab completion. After some seconds, all packages are installed and the OCI CLI is ready to configure.

Configure the OCI CLI

If you have already a created SSH key pair from a former OCI action, then you can use it here. Otherwise this setup process creates a new private and public key for you. Take care, the public key has to be in the PEM format!

Required values to finish the setup:

config location /home/oci/.oci/config
user OCID OCI > Identity > Users > [YOUR_USER] > OCID
tenancy OCID OCI > Administration > Tenancy Details > [YOUR_TENANCY] > OCID
region choose your region, e.g. eu-zurich-1
generate a new API signing RSA key pair Y -> only if you don’t have already an existing key pair
key directory /home/oci/.oci
key name oci_api_key_07102020

 

Run the setup.

OCI Console API Key

The content of the created public key has to be added in OCI Console as API key – just copy and paste it. OCI Console >> Identity >> Users >> User Details >> API Keys >> Add Public Key.

How to: https://docs.cloud.oracle.com/Content/API/Concepts/apisigningkey.htm#How2

OCI CLI Configuration Test

Verify the configuration by execute a CLI command. Example to list images based on Oracle Linux.

OCI Console Group Policy

If your user is not part of the Administrator group, a new group and a group policy is needed which has the permissions to read tenant metrics. OCI Console >> Identity >> Groups >> Create Group.

Create the policy in the root compartment of your tenant. OCI Console >> Identity >> Policy>> Create Policy.

Install and configure Grafana and the Oracle Cloud Infrastructure Metrics Data Source Plugin

Grafana

Link: https://docs.cloud.oracle.com/en-us/iaas/Content/API/SDKDocs/grafana.htm

Start and enable the service.

Don’t forget to open the firewall port 3000 for the Grafana UI.

Oracle Cloud Infrastructure Metrics Data Source Plugin

List the available OCI Grafana plugins.


Install the metric plugin.

Restart Grafana Server.

Grafana Data Source Configuration

RSA Key Configuration

Grafana needs the configuration file and the RSA Key from the user oci. One solution: as user root, copy the files and set the ownership to OS user grafana.

Change the path to the key file in /usr/share/grafana/.oci/config.

from:

to:

Add a new Data Source

Login into the Grafana server by address <server-ip>:3000. The initial username and password is admin. It’s recommended to change the password at the first login. Add a new data source. Configuration >> Data Sources >> Add data source.

Filter by oracle and select the Oracle Cloud Infrastructure Metrics plugin.

Set Tenancy OCID, select your Default Region and set the Environment to local. Press Save & Test to verify the functionality.

Create a new Dashboard and add a new panel.

Now you can query the data, for example the VPN bandwidth for region eu-zurich1 in my personal compartment. Feel free to add new panels based on the available metrics.

Example

Summary

Great to have the Oracle Cloud Infrastructure Grafana plugins back. To get an idea, which metrics are all available, verify it in the OCI Console >> Monitoring >> Metrics Explorer. The free ADB is not available in the collected metrics. But this is a general issue.

This was a review of the first OCI plugin. In the next week I will take a deeper look into the Oracle Cloud Infrastructure Logging Data Source plugin.

Let’s IPSec VPN – How to connect your Unifi Security Gateway to Oracle Cloud Infrastructure

When I connect from home to the Oracle Cloud Infrastructure normally I used a Bastion Host, an Open VPN compute instance or Public IPs.  Some of the cool stuff like MV2OCI (which transfers data from on-premises to OCI) or integration of an ADB instance in my local running Oracle Enterprise Manager are referred to direct cloud connections. A SSH reverse tunnel works fine, but this cannot be a permanent solution for my lab environment.

At home I have an Unifi Security Gateway (USG) up an running at home. This gateway has the capability, to create site-to-site VPN connections. Good: The Oracle Cloud Infrastruicture VPN service is for free, and I don’t expect over 10 TB outbound traffic. Time to create a VPN setup from home to OCI. Take care about the USG, it needs a “direct” internet contact, this is why my FTTH modem is configured in bridge mode on port 4. Small hint: If your modem is not bridged, ask your internet provider. Here in Switzerland, almost all internet providers support this function.

Architecture

Click on the image for a larger view.

Prerequisites

  • Unifi Security Gateway Public IP – visible in the USG web interface or on webpage (search term: what’s my IP)
  • Oracle Cloud Infrastructure network setup according the setup guide
  • Knowledge about IPSec details which are used by OCI and as described in the setup guide: Key Exchange Version (IKEv1), Encryption (AES-256), Hash (SHA-1), DH Group (5)
  • VCN and local network ranges
  • The IPSec endpoint IP addresses and the secrets

Oracle Cloud Infrastructure IPSec Setup

My Oracle Cloud infrastructure network is configured 1:1 as described in the manual Setting Up VPN Connect: https://docs.cloud.oracle.com/en-en/iaas/Content/Network/Tasks/settingupIPsec.htm. Here in the IPSec connection you can see the endpoint IPs, the IPSec status is actually shown as down. The secrets are provided in the detail view.

Unifi Security Gateway Setup

Here you find the details of the USG site-to-site configuration: https://help.ui.com/hc/en-us/articles/360002668854#3. Create a new network in Settings – Networks.

Oracle Cloud Infrastructure Settings

VPN Type Manual IPsec
Enabled Checkbox activated
Route Distance 30
Peer IP OCI VPN endpoint IP
Local WAN IP Local public address of the USG
Pre-Shared Key OCI IPsec tunnel secret
IPsec Profile Customized
Key Exchange Version IKEv1
Encryption AES-256
Hash SHA1
DG Group 5
PFS Checkbox activated
Dynamic Routing Checkbox activated

 

Network Configuration

Oracle Cloud Infrastructure IPSec Status Update

After about two minutes, the OCI tunnel status turns into green. The VPN tunnel is now ready to use.

Unifi Security Gateway Routing

To be sure that local connections to instances running in the Oracle Cloud Infrastructure private subnet are working properly, we need a routing entry in the USG. Create a new routing entry in Settings – Routing & Firewall.

Routing Settings

Enabled Checkbox activated
Type Bullet activated
Destination Network CIDR of the OCI VCN network / subnet
Local WAN IP Local public address of the USG
Static Route Type: Interface
Interface Select interface created above, in my case OCI – Tunnel 1

 

Connection Verification

For testing purposes, I have created a compute instance in the OCI private subnet with IP 172.16.0.2, no public access – works!

A quick Bandwith Test

I am using iperf for this small test between my Windows client and the OCI compute instance. It’s not for production, just for the feeling. 68.7 Mbits/sec 🙂

Troubleshooting in USG

The connection can be verified when logged in as administrator in the Unifi Security Gateway as user ubnt / admin. Link to the documentation: https://help.ui.com/hc/en-us/articles/360002668854-UniFi-UDM-USG-Verifying-and-Troubleshooting-IPsec-VPNs

Show the current VPN configuration

Follow the Logfile

Troubleshooting in Oracle Cloud Infrastructure

There is a small document available to verify the basic configuration, maybe in future some log access will be provided. In a past project where we had VPN connection issues with a Fortigate firewall, I had a good experience with the guys from My Oracle Support.

Link: https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Troubleshoot/ipsectroubleshoot.htm

Summary

Finally I have a stable VPN connection to Oracle Cloud Infrastructure for free. If all requirements are met, the configuration can be done in a few minutes. Next steps: Activation of the second tunnel to get VPN redundancy, enable notifications when a IPsec tunnel is down and some other Oracle Enterprise Manager 13c monitoring stuff. The weather conditions in Switzerland are bad for the next days, so there is enough time in the evenings to do further research.

#freedom #network #together #doer #curiosity

Oracle Cloud Infrastructure – Security first: Cloud Guard and Security Zones – a first View

Two new Oracle Cloud Infrastructure Cloud Security Services

Good news: Oracle has provided two new services for cloud security. Cloud Guard to get an overview of existing possible security breaches and Security Zones, which allows to create a full restricted compartment.  In this blog, I will give you a short overview about this brand new services.

Cloud Guard

The Cloud Guard service helps you to identify security issues in your tenancy. Before the first use, it has to be enabled and a base region and for a minimum one compartment has to be selected. It needs a new policy which Cloud Guard allows to gather information in your tenancy. Oracle Cloud Guard discovers available object in compartments like Compute Instances, Object Storage and many more and checks Oracle Cloud Infrastructure security best practices.

Link to documentation: https://docs.cloud.oracle.com/en-us/iaas/cloud-guard/using/index.htm

Enable Cloud Guard first

Based on recipes, it show you security recommendations for the findings and can execute corrective actions. There are two different receipes types available:

  • Oracle Managed Detector Recipe – provided by Cloud Guard, doesn’t allow to disable rules
  • User Managed Detector Recipe – a clone of an Oracle managed recipe, allows to disable individual rules

Examples for recipes – docs.cloud.oracle.com

  Oracle Managed Recipe User Managed Recipe
Rule Status Risk Level Status Risk Level
Bucket is public ENABLED HIGH DISABLED HIGH
Instance has public IP address ENABLED CRITICAL ENABLED HIGH
VCN has no inbound Security List ENABLED MEDIUM DISABLED MEDIUM

 

Based on detected findings, Cloud Guard is able to to corrective actions. This feature called Responder Rules requires a policy. Problems can be fixed on three ways:

  • Remediated – Fix using Cloud Guard responder
  • Resolved – Fixed by other process
  • Dismissed – Ignore and close

Example for a Cloud Guard Responder Action

Example – Cloud Guard has detected a Public IP 

Cloud Guard Dashboard

The dashboard gives you an overview of the findings and actions. There are direct links to the findings and recommendations. Ok, It looks I have to review my test compartment 😉

Security Zones

A security zone is associated on a compartment and a security zone recipe. For example when in the recipe is defined, users cannot create an Internet Gateway in a defined compartement, an error message occurs when he tries to create one.

Link to documentation: https://docs.cloud.oracle.com/en-us/iaas/security-zone/using/security-zones.htm

Create a new Security Zone

Recipes

There are some basic rules in the Oracle defined recipe (at the moment you can not create a customer based recipe) – for example:

  • Resources can’t be moved out from a security zone to a regular compartment
  • Resources are not accessible by Internet
  • Resources must be regularly backed up

 

Test – Create an Internet Gateway in the new created Security Zone

A violation message occurs, the security zone recipe doesn’t allow creating Internet Gateways.

Summary

I really like these two new services. Cloud Guard which helps me to identify possible security issues and Security Zones to create secure compartments without writing manual policies. This is only a short overview, in next days I will definitely take a deeper look, especially in Cloud Guard and the corrective actions. I have a great interest to find out how it works in the background for example when a public IP is detected and so on. The Oracle Cloud Infrastructure security is definitely on track!

Oracle Enterprise Manager EM13c – My Oracle Support is back!

Since a few weeks, the online connection in Oracle Enterprise Manager EM13c to My Oracle Support was broken. This resulted in errors like Error occurred when sending request to My Oracle Support, for example when you tried to set the My Oracle Support credentials in a fresh EM13c setup. Existing configurations were not able to get newest patch information anymore. Oracle has documented it in the note Recent Changes to MOS will Disable Enterprise Manager Online Connections (Doc ID 2664002.1)

Screenshot when trying to set MOS credentials in a new EM13c RU4 setup:

Now there is a fix available for all current EM 13 releases, RU included. For more details see Patch Now Available For Recent Changes to MOS That Disabled Enterprise Manager Online Connections (Doc ID 2678494.1). Here is the installation of the patch for an Oracle Enterprise Manager EM13c Release 4 RU2 without using a property file (optional). The patch is transferred to target OMS server and extracted in directory /u01/app/oracle/stage/31233849.

 

Stop OMS

Validate Patch Apply

Patch Apply

 

Start OMS

 

New try to set My Oracle Support Credentials – MOS is back!

Et voilà

MOS is back, take care if you use a proxy or a firewall – a new URL has to be whitelisted:  https://oauth-e.oracle.com !