Add full Oculog codebase

clients/ubuntu/debian/control

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+Package: oculog-client
+Version: 1.0.0
+Section: utils
+Priority: optional
+Architecture: all
+Depends: python3 (>= 3.6), python3-pip
+Maintainer: Ormentia <support@ormentia.com>
+Description: Oculog Client Agent for Server Metrics Collection
+ Oculog client agent that collects system metrics (CPU, memory, disk, network)
+ and sends them to the Oculog observability platform server.

clients/ubuntu/debian/postinst

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+#!/bin/bash
+set -e
+
+# Post-installation script
+echo "Configuring Oculog client..."
+
+# Create directories
+mkdir -p /var/log/oculog
+mkdir -p /etc/oculog
+
+# Install Python dependencies using system-managed approach
+# Try to install via apt first (for newer Ubuntu versions)
+if apt-cache show python3-psutil >/dev/null 2>&1 && apt-cache show python3-requests >/dev/null 2>&1; then
+    apt-get update -qq
+    if apt-get install -y -qq python3-psutil python3-requests >/dev/null 2>&1; then
+        PYTHON_BIN="/usr/bin/python3"
+    else
+        USE_VENV=1
+    fi
+else
+    USE_VENV=1
+fi
+
+# If apt packages aren't available, use a virtual environment
+if [ "$USE_VENV" = "1" ]; then
+    apt-get update -qq
+    apt-get install -y -qq python3-venv python3-pip >/dev/null 2>&1 || true
+    
+    # Create virtual environment
+    python3 -m venv /opt/oculog/venv
+    
+    # Install packages in virtual environment
+    /opt/oculog/venv/bin/pip install --quiet --upgrade pip
+    /opt/oculog/venv/bin/pip install --quiet psutil==5.9.6 requests==2.31.0
+    
+    PYTHON_BIN="/opt/oculog/venv/bin/python3"
+    
+    # Update shebang in client script
+    sed -i "1s|.*|#!${PYTHON_BIN}|" /opt/oculog/client.py
+    
+    # Update systemd service to use venv Python
+    sed -i "s|ExecStart=.*|ExecStart=${PYTHON_BIN} /opt/oculog/client.py|" /etc/systemd/system/oculog-client.service
+fi
+
+# Enable and start service if config exists
+if [ -f /etc/oculog/client.conf ]; then
+    systemctl daemon-reload
+    systemctl enable oculog-client.service 2>/dev/null || true
+    systemctl start oculog-client.service 2>/dev/null || true
+fi
+
+echo "Oculog client installed successfully!"
+echo "Please configure /etc/oculog/client.conf before starting the service."
+
+exit 0

clients/ubuntu/debian/postrm

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+#!/bin/bash
+set -e
+
+# Post-removal script
+if [ "$1" = "remove" ] || [ "$1" = "purge" ]; then
+    # Stop and disable service
+    systemctl stop oculog-client.service 2>/dev/null || true
+    systemctl disable oculog-client.service 2>/dev/null || true
+    
+    # Remove service file
+    rm -f /etc/systemd/system/oculog-client.service
+    systemctl daemon-reload
+    
+    # Remove symlink
+    rm -f /usr/local/bin/oculog-client
+    
+    if [ "$1" = "purge" ]; then
+        # Remove configuration and logs (optional - commented out to preserve data)
+        # rm -rf /etc/oculog
+        # rm -rf /var/log/oculog
+        # rm -rf /opt/oculog
+        echo "Configuration and logs preserved at /etc/oculog and /var/log/oculog"
+    fi
+fi
+
+exit 0

clients/ubuntu/debian/rules

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+#!/usr/bin/make -f
+
+%:
+	dh $@
+
+override_dh_auto_install:
+	dh_auto_install
+	# Install client script
+	install -d $(CURDIR)/debian/oculog-client/opt/oculog
+	install -m 755 client.py $(CURDIR)/debian/oculog-client/opt/oculog/
+	# Install systemd service
+	install -d $(CURDIR)/debian/oculog-client/etc/systemd/system
+	install -m 644 oculog-client.service $(CURDIR)/debian/oculog-client/etc/systemd/system/
+	# Create symlink
+	install -d $(CURDIR)/debian/oculog-client/usr/local/bin
+	ln -sf /opt/oculog/client.py $(CURDIR)/debian/oculog-client/usr/local/bin/oculog-client