Adjustments, apt key and repo line fixes. Added OpenSearch service parameters.

graylog/install.sh

@@ -14,9 +14,8 @@ echo "Installing dependencies..."
 # Install prerequisites for Graylog, OpenSearch, and MongoDB
 apt install -y apt-transport-https openjdk-11-jre-headless uuid-runtime pwgen wget gnupg
 
-# Function to check if the system meets the minimum requirements for Graylog
 check_system_requirements() {
-    echo "Checking system requirements for Graylog..."
+    echo "Checking the minimum system requirements for Graylog..."1
     
     # Minimum required RAM (in MB)
     minimum_ram=4096
@@ -60,8 +59,8 @@ echo "vm.max_map_count=262144" >> /etc/sysctl.conf
 
 # Add the OpenSearch repository and its GPG key
 echo "Adding OpenSearch repository..."
-wget -qO - https://d3g5vo6xdbdb9a.cloudfront.net/GPG-KEY-opensearch | apt-key add -
-echo "deb https://d3g5vo6xdbdb9a.cloudfront.net/debian stable main" | tee /etc/apt/sources.list.d/opensearch.list
+curl -o- https://artifacts.opensearch.org/publickeys/opensearch.pgp | gpg --dearmor --batch --yes -o /usr/share/keyrings/opensearch-keyring
+echo "deb [signed-by=/usr/share/keyrings/opensearch-keyring] https://artifacts.opensearch.org/releases/bundle/opensearch/2.x/apt stable main" | tee /etc/apt/sources.list.d/opensearch-2.x.list
 
 # Add the MongoDB repository
 echo "Adding MongoDB repository..."
@@ -101,6 +100,11 @@ chown -R opensearch:opensearch /var/log/opensearch
 chmod -R 2750 /graylog/opensearch/
 chmod -R 2750 /var/log/opensearch/
 
+# Add OpenSearch service and set it to start automatically
+echo "Adding OpenSearch service and enabling autostart..."
+systemctl enable opensearch
+systemctl start opensearch
+
 #Install MongoDB
 echo "Installing MongoDB"
 sudo apt install -y MongoDB

graylog/readme.md

@@ -1,3 +1,9 @@
+# Requirements:
+
+This script makes no additional requirments other than the following. The script will automatically install all dependencies and make the additional required system modifications.
+
+# Installation:
+
 To run this script:
 
 1. Use wget to grab the latest version:
@@ -6,10 +12,40 @@ To run this script:
 
 2. CHMOD the script to make it executable:
    
-   `chmod +x install.sh`
+   `sudo chmod +x install.sh`
 
 3. Run the script:
    
-   `./install.sh`
+   `sudo ./install.sh`
+
+# Script Process:
+
+This script makes the following checks (in order):
+
+Checks the script is being run as root.
+
+Installs required dependencies.
+
+Checks the system meets the minimum system requirements.
+
+Disables Huge Pages Support if Enabled (OpenSearch).
+
+Sets Maximum File Count (OpenSearch).
+
+Adds all required respitory keys & Updates the package index.
+
+Adds the OpenSearch user.
+
+Installs OpenSearch.
+
+Creates required OpenSearch directories & log file. Ensures their permissions.
+
+Installs MongoDB.
+
+Installs Graylog
+
+
+
+