diff --git a/README.md b/README.md
index f0632041..0a599555 100644
Binary files a/README.md and b/README.md differ
diff --git a/docs/faq.md b/docs/faq.md
index 69570619..c5fd6c3d 100644
--- a/docs/faq.md
+++ b/docs/faq.md
@@ -41,10 +41,15 @@ For production environments, requirements will vary based on cluster size and wo
 ### Which operating systems are supported?
 
 Ambari 3.0.0 supports:
-- Rocky Linux 8
-- CentOS 7
-- Red Hat Enterprise Linux 7 and 8
-- Ubuntu 18.04 and 20.04
+- RHEL (Redhat Enterprise Linux) 8, 7.4, 7.3, 7.2
+- CentOS 7.4, 7.3, 7.2
+- OEL (Oracle Enterprise Linux) 7.4, 7.3, 7.2
+- Amazon Linux 2
+- SLES (SuSE Linux Enterprise Server) 12 SP3, 12 SP2
+- Ubuntu 20.04, 18.04 
+- Debian 9
+- Rocky Linux 9, 8
+- openEuler-22.03
 
 ### How do I enable the Rocky-Devel repository?
 
@@ -79,6 +84,10 @@ To permanently disable SELinux, edit `/etc/selinux/config` and set:
 SELINUX=disabled
 ```
 
+### How do I disable the firewall (using systemd)?
+1. systemctl stop firewalld
+2. systemctl disable firewalld
+
 ### How do I configure the hosts file correctly?
 
 Ensure your hosts file:
diff --git a/docs/introduction.md b/docs/introduction.md
index 58a86116..468f0387 100644
--- a/docs/introduction.md
+++ b/docs/introduction.md
@@ -29,17 +29,19 @@ Ambari enables Application Developers and System Integrators to:
 
 ## Getting Started with Ambari
 
-Follow the [installation guide for Ambari 2.7.6](https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.7.6).
+Follow the [Installation Guide](../installation-guide.md)
 
 Note: Ambari currently supports the 64-bit version of the following Operating Systems:
 
-* RHEL (Redhat Enterprise Linux) 7.4, 7.3, 7.2
+* RHEL (Redhat Enterprise Linux) 8, 7.4, 7.3, 7.2
 * CentOS 7.4, 7.3, 7.2
 * OEL (Oracle Enterprise Linux) 7.4, 7.3, 7.2
 * Amazon Linux 2
 * SLES (SuSE Linux Enterprise Server) 12 SP3, 12 SP2
-* Ubuntu 14 and 16
+* Ubuntu 20.04, 18.04 
 * Debian 9
+* Rocky Linux 9, 8
+* openEuler-22.03
 
 ## Get Involved
 
diff --git a/docs/quick-start/environment-setup/bare-metal-kvm-setup.md b/docs/quick-start/environment-setup/bare-metal-kvm-setup.md
index ab8a6d42..ea4904e9 100644
--- a/docs/quick-start/environment-setup/bare-metal-kvm-setup.md
+++ b/docs/quick-start/environment-setup/bare-metal-kvm-setup.md
@@ -78,8 +78,8 @@ For development environments, you may disable the firewall:
 
 ```bash
 # Disable and stop firewalld
-systemctl disable firewalld
 systemctl stop firewalld
+systemctl disable firewalld
 ```
 
 
@@ -168,6 +168,12 @@ dnf repolist | grep devel
 # Install OpenJDK 8
 dnf install -y java-1.8.0-openjdk-devel
 
+# Install OpenJDK 17
+dnf install -y java-17-openjdk-devel
+
+# Configure wich version to use
+alternatives --config java
+
 # Verify Java installation
 java -version
 ```