Portal

Portal is an api-driven, in-kernel layer 2/3 load balancer.

Status

Complete/Experimental

Usage:

As a CLI

Simply run portal <COMMAND>

portal or portal -h will show usage and a list of commands:

portal - load balancer/proxy

Usage:
  portal [flags]
  portal [command]

Available Commands:
  add-service    Add service
  remove-service Remove service
  show-service   Show service
  show-services  Show all services
  set-services   Set service list
  set-service    Set service
  add-server     Add server to a service
  remove-server  Remove server from a service
  show-server    Show server on a service
  show-servers   Show all servers on a service
  set-servers    Set server list on a service
  add-route      Add route
  set-routes     Set route list
  show-routes    Show all routes
  remove-route   Remove route
  add-cert       Add cert
  set-certs      Set cert list
  show-certs     Show all certs
  remove-cert    Remove cert
  add-vip        Add vip
  set-vips       Set vip list
  show-vips      Show all vips
  remove-vip     Remove vip

Flags:
  -C, --api-cert="": SSL cert for the api
  -H, --api-host="127.0.0.1": Listen address for the API
  -k, --api-key="": SSL key for the api
  -p, --api-key-password="": Password for the SSL key
  -P, --api-port="8443": Listen address for the API
  -t, --api-token="": Token for API Access
  -b, --balancer="lvs": Load balancer to use (nginx|lvs)
  -r, --cluster-connection="none://": Cluster connection string (redis://127.0.0.1:6379)
  -T, --cluster-token="": Cluster security token
  -c, --conf="": Configuration file to load
  -d, --db-connection="scribble:///var/db/portal": Database connection string
  -i, --insecure[=false]: Disable tls key checking (client) and listen on http (server)
  -j, --just-proxy[=false]: Proxy only (no tcp/udp load balancing)
  -L, --log-file="": Log file to write to
  -l, --log-level="INFO": Log level to output
  -x, --proxy-http="0.0.0.0:80": Address to listen on for proxying http
  -X, --proxy-tls="0.0.0.0:443": Address to listen on for proxying https
  -s, --server[=false]: Run in server mode
  -v, --version[=false]: Print version info and exit
  -w, --work-dir="/var/db/portal": Directory for portal to use (balancer config)

Use "portal [command] --help" for more information about a command.

For usage examples, see Api and/or Cli readme

As a Server

To start portal as a server run:

portal --server

An optional config file can also be passed on startup:

portal -c /path/to/config.json

config.json

{
  "api-token": "",
  "api-host": "127.0.0.1",
  "api-port": 8443,
  "api-key": "",
  "api-cert": "",
  "api-key-password": "",
  "db-connection": "scribble:///var/db/portal",
  "cluster-connection": "none://",
  "cluster-token": "",
  "insecure": false,
  "just-proxy": false,
  "proxy-http": "0.0.0.0:80",
  "proxy-tls": "0.0.0.0:443",
  "balancer": "nginx",
  "work-dir": "/var/db/portal",
  "log-level": "INFO",
  "log-file": "",
  "server": true
}

API:

Route	Description	payload	output
Get /services	List all services	nil	json array of service objects
Post /services	Add a service	json service object	json service object
Put /services	Reset the list of services	json array of service objects	json array of service objects
Put /services/:service_id	Reset the specified service	nil	json service object
Get /services/:service_id	Get information about a service	nil	json service object
Delete /services/:service_id	Delete a service	nil	success message or an error
Get /services/:service_id/servers	List all servers on a service	nil	json array of server objects
Post /services/:service_id/servers	Add new server to a service	json server object	json server object
Put /services/:service_id/servers	Reset the list of servers on a service	json array of server objects	json array of server objects
Get /services/:service_id/servers/:server_id	Get information about a server on a service	nil	json server object
Delete /services/:service_id/servers/:server_id	Delete a server from a service	nil	success message or an error
Delete /routes	Delete a route	subdomain, domain, and path (json or query)	success message or an error
Get /routes	List all routes	nil	json array of route objects
Post /routes	Add new route	json route object	json route object
Put /routes	Reset the list of routes	json array of route objects	json array of route objects
Delete /certs	Delete a cert	json cert object	success message or an error
Get /certs	List all certs	nil	json array of cert objects
Post /certs	Add new cert	json cert object	json cert object
Put /certs	Reset the list of certs	json array of cert objects	json array of cert objects
Delete /vips	Delete a vip	json vip object	success message or an error
Get /vips	List all vips	nil	json array of vip objects
Post /vips	Add new vip	json vip object	json vip object
Put /vips	Reset the list of vips	json array of vip objects	json array of vip objects

service_id is a formatted combination of service info: type-host-port. (tcp-127_0_0_3-80)
server_id is a formatted combination of server info: host-port. (192_0_0_3-8080)

For examples, see the api's readme

Data types:

Service:

json:

{
  "host": "127.0.0.1",
  "port": 1234,
  "type": "tcp",
  "scheduler": "wlc",
  "persistence": 300,
  "netmask": "255.255.255.0",
  "servers": []
}

json with a server:

{
  "host": "127.0.0.1",
  "port": 8080,
  "type": "tcp",
  "scheduler": "wlc",
  "persistence": 300,
  "netmask": "",
  "servers": [
    {
      "host": "172.28.128.4",
      "port": 8081,
      "forwarder": "m",
      "weight": 1,
      "UpperThreshold": 0,
      "LowerThreshold": 0
    }
  ]
}

Fields:

host: IP of the host the service is bound to.
interface: Host interface the service is bound to (optional, overrides host).
port: Port that the service listens to.
type: Type of service.
- tcp
- udp
scheduler: How to pick downstream server.
- rr - Round Robin
- wrr - Weighted Round Robin
- lc - Least-Connection
- wlc - Weighted Least-Connection
- lblc - Locality-Based Least-Connection
- lblcr - Locality-Based Least-Connection with Replication
- dh - Destination Hashing
- sh - Source Hashing
- sed - Shortest Expected Delay
- nq - Never Queue
persistence: Timeout for keeping requests from the same client going to the same server.
netmask: How to group clients with persistence to servers.
servers: Array of server objects associated to the service.

Server:

json:

{
  "host": "127.0.0.1",
  "port": 1234,
  "forwarder": "m",
  "weight": 1,
  "upper_threshold": 0,
  "lower_threshold": 0
}

Fields:

host: IP of the host the service is bound to.
port: Port that the service listens to.
forwarder: Method to use to forward traffic to this server.
- g - Gatewaying
- i - Ipip encapsulation
- m - Masquerading
weight: Weight to perfer this server. Set to 0 if no traffic should go to this server.
upper_threshold: Stop sending connections to this server when this number is reached.
- 0 - No limit
lower_threshold: Restart sending connections when drains down to this number.
- 0 - Not set

Vip:

json:

{
  "ip": "192.168.0.101/24",
  "interface": "eth1",
  "alias": "eth1:0"
}

Fields:

ip: Ip to add to interface. Should be ip/cidr
interface: Interface to add ip to
alias: Alias to assign the ip (can be used as "interface" when adding a service)

Route:

json:

{
  "subdomain": "admin",
  "domain": "test.com",
  "path": "/admin*",
  "targets": ["http://127.0.0.1:8080/app1","http://127.0.0.2"],
  "fwdpath": "/",
  "page": ""
}

Fields:

subdomain: Subdomain to match on
domain: Domain to match on
path: Path to match on
targets: URIs of servers
fwdpath: Path to forward to targets (combined with target path)
page: Page to serve instead of routing to targets

Certificate:

json:

{
  "key": "-----BEGIN PRIVATE KEY-----\nMII.../J8\n-----END PRIVATE KEY-----",
  "cert": "-----BEGIN CERTIFICATE-----\nMII...aI=\n-----END CERTIFICATE-----"
}

Fields:

key: Pem style key
cert: Pem style certificate

Error:

json:

{
  "error": "exit status 2: unexpected argument"
}

Fields:

error: Error message

Message:

json:

{
  "msg": "Success"
}

Fields:

msg: Success message

Contributing

Portal uses govendor to manage dependencies. After clone, run govendor sync to ensure you have the proper dependencies prior to building.

Todo

vip testing
balance vips across cluster
redis cluster init to get and set certs and vips

Changelog

0.1.1 - 17-06-20
- Log and fail if db init fails
- Use govendor for deps
- Pre-validate protocol for services
- Log all 'forwarded-for' ips
0.1.0 - 17-01-24
- Fixed start issues related to VIPs
Added ability to specify interface when registering a service
Users can now add vips to portal
Portal now uses the service host for server's hosts that are "127.0.0.1"

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Portal

Status

Usage:

As a CLI

As a Server

API:

Data types:

Service:

Server:

Vip:

Route:

Certificate:

Error:

Message:

Contributing

Todo

Changelog