OpenFlare/docs/en/deployment/agent.md

Access Agent

You will learn: The responsibilities of the Agent, the difference between the two access Tokens, installation script parameters, agent.json settings, and how to verify that the node has successfully connected.

The OpenFlare Agent runs on the proxy node. It does not receive arbitrary remote shell commands; instead, it pulls the configuration version published by the control plane via the Agent API, writes files for OpenResty locally, executes configuration validation, reloads, and attempts to roll back to a working configuration if it fails.

Connection Credentials

Method	Applicable Scenario
discovery_token	Automatically registers a node for the first time, which the Server exchanges for a node-specific credential
agent_token	Node has already been created/allocated in the management console, directly uses this node-specific credential

At least one of agent_token or discovery_token must be configured.

Credential Retrieval Path

• discovery_token (Auto Registration Token): Log into the management console, navigate to "System Settings" -> "Auto Registration", where you can generate, view, and copy the global auto-registration credential.
• agent_token (Node Specific Token): Log into the management console, navigate to "Node Management" -> "Add Node", fill in basic node information, save, and copy the node-specific access Token in the node details.

One-Click Installation

Using the discovery_token:

curl -fsSL https://raw.githubusercontent.com/Rain-kl/OpenFlare/main/scripts/install-agent.sh | bash -s -- \
  --server-url http://your-server:3000 \
  --discovery-token YOUR_DISCOVERY_TOKEN

Using the node-specific agent_token:

curl -fsSL https://raw.githubusercontent.com/Rain-kl/OpenFlare/main/scripts/install-agent.sh | bash -s -- \
  --server-url http://your-server:3000 \
  --agent-token YOUR_AGENT_TOKEN

The installation script downloads the latest Agent, writes to /opt/openflare-agent by default, generates agent.json, and registers openflare-agent.service on Linux + systemd environments.

Supported arguments:

Argument	Description	Default Value
--server-url	Server address (required)
--discovery-token	One-time auto-registration Token
--agent-token	Node-specific Token
--install-dir	Target installation directory	/opt/openflare-agent
--openresty-path	Path to the OpenResty binary; automatically detects openresty if unspecified
--repo	GitHub repository to download from	Rain-kl/OpenFlare
--no-service	Do not register systemd service

Configuration File

Default configuration file path:

/opt/openflare-agent/agent.json

Example local configuration:

{
  "server_url": "http://127.0.0.1:3000",
  "agent_token": "replace-with-node-auth-token",
  "data_dir": "./data",
  "openresty_path": "openresty",
  "openresty_observability_port": 18081,
  "observability_replay_minutes": 15,
  "heartbeat_interval": 10000,
  "request_timeout": 10000
}

Example customized OpenResty paths configuration:

{
  "server_url": "http://127.0.0.1:3000",
  "agent_token": "replace-with-node-auth-token",
  "data_dir": "/var/lib/openflare-agent",
  "openresty_path": "/usr/local/openresty/nginx/sbin/openresty",
  "main_config_path": "/var/lib/openflare-agent/etc/nginx/nginx.conf",
  "route_config_path": "/var/lib/openflare-agent/etc/nginx/conf.d/openflare_routes.conf",
  "access_log_path": "/var/lib/openflare-agent/var/log/openflare/access.log",
  "cert_dir": "/var/lib/openflare-agent/etc/nginx/certs",
  "lua_dir": "/var/lib/openflare-agent/etc/nginx/lua",
  "runtime_config_dir": "/var/lib/openflare-agent/etc/openflare",
  "heartbeat_interval": 10000,
  "request_timeout": 10000
}

If openresty_path is not configured, the Agent calls openresty by default. For the full fields, see Configurations Reference.

Running in Docker

For Docker deployments, run the Agent image containing built-in OpenResty directly:

docker pull ghcr.io/rain-kl/openflare-agent:latest
docker rm -f openflare-agent 2>/dev/null || true
docker run -d --name openflare-agent --restart unless-stopped \
  -p 80:80 -p 443:443 \
  -e OPENFLARE_SERVER_URL=http://your-server:3000 \
  -e OPENFLARE_AGENT_TOKEN=YOUR_AGENT_TOKEN \
  ghcr.io/rain-kl/openflare-agent:latest

Start & Validate

In a systemd environment:

systemctl start openflare-agent
systemctl status openflare-agent
journalctl -u openflare-agent -f

Manual execution:

/opt/openflare-agent/openflare-agent -config /opt/openflare-agent/agent.json

Running from source:

cd openflare_agent
export LOG_LEVEL='info'
go run ./cmd/agent -config /path/to/agent.json

Running compiled binary:

cd openflare_agent
go build -o openflare-agent ./cmd/agent
export LOG_LEVEL='info'
./openflare-agent -config /path/to/agent.json

Confirm in the management console:

Position	Expected Result
Node List	Node status is online
Node Details	Heartbeat, current version, and basic resource metrics display correctly
Apply Logs	Application result displays after publishing

Uninstall

To completely uninstall the Agent and wipe local data:

curl -fsSL https://raw.githubusercontent.com/Rain-kl/OpenFlare/main/scripts/uninstall-agent.sh | bash

Supported arguments:

Argument	Description	Default Value
--install-dir	Installation directory	/opt/openflare-agent
--service-name	systemd service name	openflare-agent

The uninstallation script only removes the Agent service, processes, and installation directory; it does not uninstall OpenResty from the host.

Common Questions

Symptom	Actions
agent_token and discovery_token cannot both be empty	Check if at least one Token is configured in agent.json
Node stays offline	Run curl -I http://your-server:3000 on the Agent node to verify that the Server is reachable
OpenResty is not running	Review journalctl -u openflare-agent, checking that openresty_path is executable and ports 80/443 are not bound
Repeated application failures after publishing	The Agent blocks repeated sync attempts of the same failing version + checksum; fix the configuration and republish, or activate an older version to roll back