iocage plugins are a simple and very fast method to get application containers installed and configured. At its core, a plugin is a jail specifically running one program. Popular programs can be installed repeatedly with one line. Additionally, plugins are easily extended by users, offering a high level of customizability and functionality.

In structure, a plugin consists of .json manifest and .png icon files.

See what’s available

To see a list of all currently available plugins, open a command line and type iocage list -PR or iocage list --plugins --remote. The full iocage plugin list is also available on GitHub.

Check which plugins are installed on the system with iocage list --plugins or iocage list -P.

Getting started with plugins


iocage needs to be activated before plugins can be installed or modified!

To get started, open a command line and type iocage fetch --plugins ip4_addr="IF|IP". This initial fetch also supports dhcp in the same manner as iocage create. The IP listed for the plugin needs to be a valid IP not already in use. Use the - -name flag to easily fetch a specific plugin:

$ iocage fetch --plugins --name plexmediaserver ip4_addr="igb0|"

If available, plugins can also be fetched locally with iocage fetch -P the/path/to/plugin.json ip4_addr="re0|"


Using iocage fetch locally is very useful when testing an in-development plugin.

After fetching a plugin, view of all its properties with iocage get -a NAME|UUID | less. Individual properties are found with iocage get PROPERTY:

$ iocage get type quasselcore

Adjust the plugin properties with iocage set:

$ iocage set PROPERTY quasselcore

iocage set is used to configure that plugin. In this example, a complete Quasselcore plugin is installed to a FreeNAS system, then the note of the plugin is changed:

[root@freenas ~]# iocage fetch --plugins --name quasselcore ip4_addr="em0|"
[root@freenas ~]# iocage set notes="Hello world" quasselcore
[root@freenas ~]# iocage get notes quasselcore
Hello world

Upgrading and updating plugins

The process for upgrading and updating plugins is exactly the same as normal jails. See Updating Jails or Upgrading Jails .

Plugin Manifest Example

Following is an example of a plugin manifest:

    "name": "default_jail_name_here",
    "release": "11.3-RELEASE",
    "artifact": "",
    "official": false,
    "properties": {
        "nat": 1,
        "nat_forwards": "tcp(7878:7878)"
    "devfs_ruleset": {
        "paths": {"bpf*": null},
        "includes": []
    "pkgs": [
    "packagesite": "${ABI}/latest",
    "fingerprints": {
        "iocage-plugins": [
                "function": "sha256",
                "fingerprint": "b0170035af3acc5f3f3ae1859dc717101b4e6c1d0a794ad554928ca0cbb2f438"
    "revision": 0
  • devfs_ruleset: It should be a valid dictionary object where “paths” must be specified. Value of “paths” is a dictionary where keys are the path to be added and the value is the mode to be used. null translates to unhide. For any include specified, please refer to the following example which shows how each path specified is added as iocage dynamically generates a devfs ruleset and how an include is added to the ruleset:
devfs rule -s ruleset_number add path bpf* unhide
devfs rule -s ruleset_number add include include_value