updated env and sh completed

.env.example

@@ -0,0 +1,7 @@
+# MongoDB credentials
+MONGO_ROOT_USERNAME=admin
+MONGO_ROOT_PASSWORD=change_this_password
+
+# Mongo Express credentials
+MONGOEXPRESS_USERNAME=mexpress
+MONGOEXPRESS_PASSWORD=change_this_password_too

docker-install.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+# Docker installation script for LXC container in Proxmox
+
+# Exit on any error
+set -e
+
+echo "Starting Docker installation for LXC container..."
+
+# Fix DNS if needed
+echo "Checking and fixing DNS configuration..."
+if ! grep -q "nameserver" /etc/resolv.conf; then
+  echo "DNS configuration missing or empty, adding Google DNS servers..."
+  echo "nameserver 8.8.8.8
+nameserver 8.8.4.4" > /etc/resolv.conf
+  echo "DNS configuration fixed."
+fi
+
+# Install basic tools first
+echo "Installing basic tools..."
+apt update
+apt install -y curl wget apt-transport-https ca-certificates gnupg lsb-release
+
+# Update the system
+echo "Updating system packages..."
+apt update && apt upgrade -y
+
+# Download the Docker installation script
+echo "Downloading official Docker installation script..."
+curl -fsSL https://get.docker.com -o get-docker.sh
+
+# Make it executable
+chmod +x get-docker.sh
+
+# Run the installation script
+echo "Running Docker installation script..."
+sh ./get-docker.sh
+
+# Install Docker Compose
+echo "Installing Docker Compose..."
+curl -L "https://github.com/docker/compose/releases/download/v2.20.3/docker-compose-linux-$(uname -m)" -o /usr/local/bin/docker-compose
+chmod +x /usr/local/bin/docker-compose
+
+# Enable Docker to start on boot
+echo "Enabling Docker to start on boot..."
+systemctl enable docker
+
+# Verify installations
+echo "Verifying installations..."
+docker --version
+docker-compose --version
+
+echo "Docker installation complete!"
+echo "You can now use Docker and Docker Compose in your LXC container."

fix-network.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+# Network troubleshooting script for LXC containers
+
+# Exit on any error
+set -e
+
+echo "Starting network troubleshooting..."
+
+# Check if we can ping IP addresses
+echo "Testing basic connectivity..."
+if ping -c 2 8.8.8.8 >/dev/null 2>&1; then
+  echo "✅ Basic network connectivity works (can ping 8.8.8.8)"
+else
+  echo "❌ Cannot ping 8.8.8.8 - basic network connectivity issue"
+  echo "Checking network interfaces..."
+  ip a
+fi
+
+# Check and fix DNS
+echo "Checking DNS configuration..."
+if ! grep -q "nameserver" /etc/resolv.conf || ! host archive.ubuntu.com >/dev/null 2>&1; then
+  echo "❌ DNS resolution not working, fixing..."
+  
+  # Add Google DNS servers
+  echo "nameserver 8.8.8.8
+nameserver 8.8.4.4" > /etc/resolv.conf
+  
+  echo "✅ Added Google DNS servers to /etc/resolv.conf"
+  
+  # Make DNS changes persistent
+  echo "Making DNS changes persistent..."
+  mkdir -p /etc/systemd/resolved.conf.d/
+  cat > /etc/systemd/resolved.conf.d/dns_servers.conf << EOF
+[Resolve]
+DNS=8.8.8.8 8.8.4.4
+FallbackDNS=1.1.1.1
+EOF
+  
+  # Try to restart systemd-resolved if it exists
+  if systemctl status systemd-resolved >/dev/null 2>&1; then
+    systemctl restart systemd-resolved
+    echo "✅ Restarted systemd-resolved"
+  fi
+  
+  # Try to restart systemd-networkd if it exists
+  if systemctl status systemd-networkd >/dev/null 2>&1; then
+    systemctl restart systemd-networkd
+    echo "✅ Restarted systemd-networkd"
+  fi
+else
+  echo "✅ DNS configuration looks good"
+fi
+
+# Add hosts entries as a fallback
+echo "Adding fallback entries to /etc/hosts..."
+if ! grep -q "archive.ubuntu.com" /etc/hosts; then
+  cat >> /etc/hosts << EOF
+185.125.190.36 archive.ubuntu.com
+185.125.190.36 security.ubuntu.com
+EOF
+  echo "✅ Added Ubuntu repositories to /etc/hosts"
+fi
+
+# Test DNS resolution
+echo "Testing DNS resolution..."
+if host archive.ubuntu.com >/dev/null 2>&1; then
+  echo "✅ DNS resolution working for archive.ubuntu.com"
+else
+  echo "❌ DNS resolution still not working for archive.ubuntu.com"
+  echo "Trying ping with hosts file..."
+  if ping -c 2 archive.ubuntu.com >/dev/null 2>&1; then
+    echo "✅ Can ping archive.ubuntu.com using hosts file entry"
+  else
+    echo "❌ Still cannot reach archive.ubuntu.com"
+    echo "This may be a more serious network issue with your LXC container"
+  fi
+fi
+
+echo "Network troubleshooting completed"
+echo "Try running 'apt update' now to see if it works"

proxmox-lxc-setup.md

@@ -2,7 +2,21 @@
 
 This guide will walk you through creating and configuring an LXC container in Proxmox that's optimized for running Docker and our MongoDB service.
 
-## Step 1: Create a new LXC Container in Proxmox
+## Step 1: Download the Ubuntu 22.04 LTS Template
+
+If you don't already have the Ubuntu 22.04 LTS template in your Proxmox server, you'll need to download it first:
+
+1. Log in to your Proxmox web interface
+2. Select your node in the server view
+3. Go to the "Local" storage (or any storage configured for CT templates)
+4. Click on the "Templates" button
+5. In the template list, find "ubuntu-22.04-standard" in the list
+   - If you don't see it, click on "Templates" and then search for "ubuntu-22.04"
+   - If the template list is empty or doesn't show Ubuntu 22.04, you may need to refresh the list by clicking "Refresh"
+6. Click on the template and then click "Download"
+7. Wait for the download to complete
+
+## Step 2: Create a new LXC Container in Proxmox
 
 1. Log in to your Proxmox web interface
 2. Select your node in the server view
@@ -17,7 +31,13 @@ This guide will walk you through creating and configuring an LXC container in Pr
      - SSH Public Key: (optionally add your SSH key)
 
    - **Template**:
-     - Select a recent Ubuntu or Debian template (e.g., ubuntu-22.04-standard)
+     - **Best choice**: Ubuntu 22.04 LTS (ubuntu-22.04-standard)
+     - Reasons:
+       - Excellent Docker compatibility
+       - Long-term support until 2027
+       - Best documentation and community support for Docker
+       - Most stable kernel features needed for containerization
+       - Regular security updates
 
    - **Disks**:
      - Storage: (select your storage)
@@ -38,7 +58,7 @@ This guide will walk you through creating and configuring an LXC container in Pr
 
 5. Click "Finish" to create the container
 
-## Step 2: Configure the LXC Container for Docker
+## Step 3: Configure the LXC Container for Docker
 
 After creating the container, you need to modify its configuration to support Docker:
 
@@ -67,7 +87,7 @@ lxc.mount.auto: proc:rw sys:rw
 
 5. Start the container
 
-## Step 3: Install Docker inside the LXC Container
+## Step 4: Configure Network and Install Docker
 
 1. Start the container and access its shell:
 
@@ -76,60 +96,148 @@ pct start <container-id>
 pct enter <container-id>
 ```
 
-2. Update the system:
+2. **IMPORTANT: Check if your network interface has an IP address:**
+
+```bash
+ip a
+```
+
+If your eth0 interface doesn't show an IPv4 address (like 192.168.x.x), you need to configure it first:
+
+```bash
+# For Proxmox LXC containers, configure networking from the Proxmox web interface:
+
+1. Exit the container first with 'exit' command
+2. In the Proxmox web interface, select your container from the left sidebar
+3. Click 'Stop' to stop the container if it's running
+4. Go to the 'Network' tab
+5. If there's no network interface, click 'Create' to add one:
+   - Name: eth0
+   - Bridge: vmbr0 (or your preferred bridge)
+   - IPv4: DHCP (or Static with your preferred IP configuration)
+   - IPv4/CIDR: (if using static IP, enter something like 192.168.1.100/24)
+   - Gateway: (if using static IP, enter your gateway, e.g., 192.168.1.1)
+6. If there's already a network interface, click 'Edit' and update the configuration
+7. Click 'OK' to save the changes
+8. Go back to the 'Summary' tab and click 'Start' to start the container
+9. Click 'Console' to access the container
+
+# Alternatively, use the command line on the Proxmox host:
+
+# Stop the container
+pct stop <container-id>
+
+# Configure networking (DHCP)
+pct set <container-id> -net0 name=eth0,bridge=vmbr0,ip=dhcp
+
+# Or configure with static IP (replace with your network details)
+pct set <container-id> -net0 name=eth0,bridge=vmbr0,ip=192.168.1.100/24,gw=192.168.1.1
+
+# Start the container again
+pct start <container-id>
+pct enter <container-id>
+
+# Verify you now have an IP address
+ip a
+```
+
+3. Fix network connectivity issues:
+
+```bash
+# First, check if you can ping IP addresses
+ping -c 4 8.8.8.8
+
+# If you can't ping IPs, check your network interface
+ip a
+
+# Check your container's network configuration
+cat /etc/network/interfaces
+
+# Check DNS configuration
+cat /etc/resolv.conf
+
+# Fix DNS by adding these entries to resolv.conf
+echo "nameserver 8.8.8.8
+nameserver 8.8.4.4" > /etc/resolv.conf
+
+# Make the DNS changes persistent by editing the systemd-resolved configuration
+mkdir -p /etc/systemd/resolved.conf.d/
+cat > /etc/systemd/resolved.conf.d/dns_servers.conf << EOF
+[Resolve]
+DNS=8.8.8.8 8.8.4.4
+FallbackDNS=1.1.1.1
+EOF
+
+# Restart networking and DNS services
+systemctl restart systemd-networkd
+systemctl restart systemd-resolved
+
+# Test DNS resolution
+host archive.ubuntu.com
+```
+
+4. If DNS is still not working, try adding entries to /etc/hosts:
+
+```bash
+# Add essential Ubuntu repositories to /etc/hosts
+cat >> /etc/hosts << EOF
+185.125.190.36 archive.ubuntu.com
+185.125.190.36 security.ubuntu.com
+EOF
+
+# Test if it works
+ping -c 2 archive.ubuntu.com
+```
+
+5. Install basic tools:
+
+```bash
+apt update
+apt install -y curl wget apt-transport-https ca-certificates gnupg lsb-release
+```
+
+6. Update the system:
 
 ```bash
 apt update && apt upgrade -y
 ```
 
-3. Install required packages:
+7. Install Docker using the official installation script:
 
 ```bash
-apt install -y apt-transport-https ca-certificates curl software-properties-common gnupg
+# Download the Docker installation script
+curl -fsSL https://get.docker.com -o get-docker.sh
+
+# Review the script (optional but recommended)
+less get-docker.sh
+
+# Run the installation script
+sh get-docker.sh
 ```
 
-4. Add Docker's official GPG key and repository:
+This script automatically detects your OS, adds the appropriate repositories, and installs Docker and its dependencies.
 
-For Ubuntu:
+8. Install Docker Compose:
-```bash
-curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
-echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
-```
-
-For Debian:
-```bash
-curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
-echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
-```
-
-5. Update the package database and install Docker:
-
-```bash
-apt update
-apt install -y docker-ce docker-ce-cli containerd.io
-```
-
-6. Install Docker Compose:
 
 ```bash
 curl -L "https://github.com/docker/compose/releases/download/v2.20.3/docker-compose-linux-$(uname -m)" -o /usr/local/bin/docker-compose
 chmod +x /usr/local/bin/docker-compose
 ```
 
-7. Verify the installations:
+9. Verify the installations:
 
 ```bash
 docker --version
 docker-compose --version
 ```
 
-8. Enable Docker to start on boot:
+10. Enable Docker to start on boot:
 
 ```bash
 systemctl enable docker
 ```
 
-## Step 4: Deploy MongoDB using Docker Compose
+## Step 5: Deploy MongoDB using Docker Compose
 
 1. Create a directory for your MongoDB service:
 
@@ -163,7 +271,7 @@ docker-compose up -d
 docker-compose ps
 ```
 
-## Step 5: Configure Firewall (Optional but Recommended)
+## Step 6: Configure Firewall (Optional but Recommended)
 
 If you're using a firewall on your Proxmox host, make sure to allow traffic to ports 27017 and 8081:
 
@@ -177,7 +285,7 @@ iptables -A INPUT -p tcp --dport 27017 -j ACCEPT
 iptables -A INPUT -p tcp --dport 8081 -j ACCEPT
 ```
 
-## Step 6: Test the Connection
+## Step 7: Test the Connection
 
 From your external machine, test the connection to MongoDB: