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Implement self-update capability for the unified pulse-agent binary: - Add internal/agentupdate package with cross-platform update logic - Hourly version checks against /api/agent/version endpoint - SHA256 checksum verification for downloaded binaries - Atomic binary replacement with backup/rollback on failure - Support for Linux, macOS, and Windows (10 platform/arch combinations) Build and release changes: - Dockerfile builds unified agent for all platforms - build-release.sh includes unified agent in release artifacts - validate-release.sh validates unified agent binaries - Install scripts (install.sh, install.ps1) use correct URL format Related to #727, #737
139 lines
3.9 KiB
Markdown
139 lines
3.9 KiB
Markdown
# Pulse Unified Agent
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The unified agent (`pulse-agent`) combines host and Docker monitoring into a single binary. It replaces the separate `pulse-host-agent` and `pulse-docker-agent` for simpler deployment and management.
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## Quick Start
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Generate an installation command in the UI:
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**Settings > Agents > "Install New Agent"**
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### Linux (systemd)
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <api-token>
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```
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### macOS
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <api-token>
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```
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### Synology NAS
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <api-token>
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```
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## Features
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- **Host Metrics**: CPU, memory, disk, network I/O, temperatures
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- **Docker Monitoring**: Container metrics, health checks, Swarm support (when enabled)
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- **Auto-Update**: Automatically updates when a new version is released
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- **Multi-Platform**: Linux, macOS, Windows support
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## Configuration
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| Flag | Env Var | Description | Default |
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|------|---------|-------------|---------|
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| `--url` | `PULSE_URL` | Pulse server URL | `http://localhost:7655` |
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| `--token` | `PULSE_TOKEN` | API token | *(required)* |
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| `--interval` | `PULSE_INTERVAL` | Reporting interval | `30s` |
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| `--enable-host` | `PULSE_ENABLE_HOST` | Enable host metrics | `true` |
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| `--enable-docker` | `PULSE_ENABLE_DOCKER` | Enable Docker metrics | `false` |
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| `--disable-auto-update` | `PULSE_DISABLE_AUTO_UPDATE` | Disable auto-updates | `false` |
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| `--insecure` | `PULSE_INSECURE_SKIP_VERIFY` | Skip TLS verification | `false` |
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| `--hostname` | `PULSE_HOSTNAME` | Override hostname | *(OS hostname)* |
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| `--agent-id` | `PULSE_AGENT_ID` | Unique agent identifier | *(machine-id)* |
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## Installation Options
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### Host Monitoring Only (default)
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <token>
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```
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### Host + Docker Monitoring
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <token> --enable-docker
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```
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### Docker Monitoring Only
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <token> --disable-host --enable-docker
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```
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## Auto-Update
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The unified agent automatically checks for updates every hour. When a new version is available:
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1. Agent downloads the new binary from the Pulse server
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2. Verifies the checksum
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3. Replaces itself atomically (with backup)
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4. Restarts with the same configuration
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To disable auto-updates:
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```bash
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# During installation
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curl -fsSL http://<pulse-ip>:7655/install.sh | \
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bash -s -- --url http://<pulse-ip>:7655 --token <token> --disable-auto-update
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# Or set environment variable
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PULSE_DISABLE_AUTO_UPDATE=true
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```
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## Uninstall
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```bash
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curl -fsSL http://<pulse-ip>:7655/install.sh | bash -s -- --uninstall
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```
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This removes:
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- The agent binary
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- The systemd/launchd service
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- Any legacy agents (pulse-host-agent, pulse-docker-agent)
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## Migration from Legacy Agents
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The install script automatically removes legacy agents when installing the unified agent:
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- `pulse-host-agent` service is stopped and removed
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- `pulse-docker-agent` service is stopped and removed
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- Binaries are deleted from `/usr/local/bin/`
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No manual cleanup is required.
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## Troubleshooting
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### Agent Not Updating
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- Check logs: `journalctl -u pulse-agent -f`
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- Verify network connectivity to Pulse server
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- Ensure auto-update is not disabled
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### Duplicate Hosts
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If cloned VMs appear as the same host:
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```bash
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sudo rm /etc/machine-id && sudo systemd-machine-id-setup
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```
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Or set a unique agent ID:
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```bash
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--agent-id my-unique-host-id
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```
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### Permission Denied (Docker)
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Ensure the agent can access the Docker socket:
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```bash
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sudo usermod -aG docker $USER
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```
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### Check Status
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```bash
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# Linux
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systemctl status pulse-agent
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# macOS
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launchctl list | grep pulse
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```
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