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Building your own FRRouting Snap

(Tested on Ubuntu 18.04)

Install snapcraft:
```
 sudo apt-get install snapcraft
```

Checkout FRRouting under a unpriviledged user account

 git clone https://github.com/frrouting/frr.git
 cd frr

(Optional) Add extra version information to snapcraft/extra_version_info.txt. Information in this file will be displayed with the frr.version command (simple cat after the display of the zebra --version output)
Run Bootstrap and make distribution tar.gz
```
 ./bootstrap.sh
 ./configure --with-pkg-extra-version=-MySnapVersion
 make dist
```
Note: configure parameters are not important for the Snap building, except the with-pkg-extra-version if you want to give the Snap a specific name to mark your own unoffical build

This will build frr-something.tar.gz - the distribution tar and the snapcraft/snapcraft.yaml with the matching version number
Create snap
```
 cd snapcraft
 snapcraft
```
You should now end up with frr_something.snap

Installing the snap

(This can be done on a different system)

Install snapd
```
 sudo apt-get install snapd
```
Install self-built frr snap. (--force-dangerous is required to install a unsigned self-built snap)
```
 snap install --force-dangerous ./frr*.snap
```
Connect the priviledged network-control plug to the snap:
```
 snap connect frr:network-control core:network-control
```

See README.usage.md for more details on setting up and using the snap

DONE.

The Snap will be auto-started and running.

Operations

FRRouting Daemons

At this time, all FRRouting daemons are auto-started.

A daemon can be stopped/started with (ie ospf6d)

systemctl stop snap.frr.ospf6d.service
systemctl start snap.frr.ospf6d.service

or disabled/enabled with

systemctl disable snap.frr.ospf6d.service
systemctl enable snap.frr.ospf6d.service

FRRouting Commands

All the commands are prefixed with frr.

frr.vtysh       -> vtysh
frr.version     -> Just gives version output (zebra --version)
frr.readme      -> Returns simple README with hints on using FRR

frr.bgpd-debug  -> Directly start each daemon (without service)
frr.isisd-debug
frr.ospf6d-debug
frr.ospfd-debug
frr.pimd-debug
frr.pim6d-debug
frr.ripd-debug
frr.ripngd-debug
frr.ldp-debug
frr.zebra-debug
frr.nhrpd-debug
frr.babeld-debug
frr.eigrpd-debug
frr.pbrd-debug
frr.staticd-debug
frr.bfdd-debug
frr.fabricd-debug
frr.pathd-debug

vtysh can be accessed as frr.vtysh (Make sure you have /snap/bin in your path). If access as vtysh instead of frr.vtysh is needed, you can enable it via a snap alias as follows:

sudo snap alias frr vtysh

This will add the vtysh command to your /snap/bin for direct access. The output of

sudo snap aliases

should list vtysh command alias as enabled:

App Alias Notes frr.vtysh vtysh enabled

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