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diff --git a/docs/ch04-configuration-overview.rst b/docs/ch04-configuration-overview.rst new file mode 100644 index 00000000..54951364 --- /dev/null +++ b/docs/ch04-configuration-overview.rst @@ -0,0 +1,209 @@ +Configuration Overview +====================== + +VyOS makes use of a unified configuration file for all system configuration: +`config.boot`. This allows for easy template creation, backup, and replication +of system configuration. + +The current configuration can be viewed using the show configuration command. + +.. code-block:: sh + + vyos@vyos:~$ show configuration + interfaces { + ethernet eth0 { + address dhcp + hw-id 00:0c:29:44:3b:0f + } + loopback lo { + } + } + service { + ssh { + port 22 + } + } + system { + config-management { + commit-revisions 20 + } + console { + device ttyS0 { + speed 9600 + } + } + login { + user vyos { + authentication { + encrypted-password **************** + } + level admin + } + } + ntp { + server 0.pool.ntp.org { + } + server 1.pool.ntp.org { + } + server 2.pool.ntp.org { + } + } + syslog { + global { + facility all { + level notice + } + facility protocols { + level debug + } + } + } + } + vyos@vyos:~$ + +Because configuration changes are made using `set` and `delete` commands, the +commands to generate the active configuration can also be displayed using the +`show configuration commands` command. + +.. code-block:: sh + + vyos@vyos:~$ show configuration commands + set interfaces ethernet eth0 address 'dhcp' + set interfaces ethernet eth0 hw-id '00:0c:29:44:3b:0f' + set interfaces loopback 'lo' + set service ssh port '22' + set system config-management commit-revisions '20' + set system console device ttyS0 speed '9600' + set system login user vyos authentication encrypted-password '<removed>' + set system login user vyos level 'admin' + set system ntp server '0.pool.ntp.org' + set system ntp server '1.pool.ntp.org' + set system ntp server '2.pool.ntp.org' + set system syslog global facility all level 'notice' + set system syslog global facility protocols level 'debug' + vyos@vyos:~$ + +Configuration changes made do not take effect until committed using the commit +command in configuration mode. + +.. code-block:: sh + + vyos@vyos# commit + [edit] + vyos@vyos# exit + Warning: configuration changes have not been saved. + vyos@vyos:~$ + +In order to preserve configuration changes upon reboot, the configuration must +also be saved once applied. This is done using the save command in +configuration mode. + +.. code-block:: sh + + vyos@vyos# save + Saving configuration to '/config/config.boot'... + Done + [edit] + vyos@vyos# + +The show command within configuration mode will show the current configuration +indicating line changes with a + for additions and a - for deletions. + +.. code-block:: sh + + vyos@vyos:~$ configure + [edit] + vyos@vyos# show interfaces + ethernet eth0 { + address dhcp + hw-id 00:0c:29:44:3b:0f + } + loopback lo { + } + [edit] + vyos@vyos# set interfaces ethernet eth0 description 'OUTSIDE' + [edit] + vyos@vyos# show interfaces + ethernet eth0 { + address dhcp + + description OUTSIDE + hw-id 00:0c:29:44:3b:0f + } + loopback lo { + } + [edit] + vyos@vyos# + +Configuration mode can not be exited while uncommitted changes exist. To exit +configuration mode without applying changes, the exit discard command can be +used. + +.. code-block:: sh + + vyos@vyos# exit + Cannot exit: configuration modified. + Use 'exit discard' to discard the changes and exit. + [edit] + vyos@vyos# exit discard + exit + vyos@vyos:~$ + +VyOS also maintains backups of previous configurations. To compare +configuration revisions in configuration mode, use the compare command: + +.. code-block:: sh + + vyos@vyos# compare [tab] + Possible completions: + <Enter> Compare working & active configurations + saved Compare working & saved configurations + <N> Compare working with revision N + <N> <M> Compare revision N with M + Revisions: + 0 2013-12-17 20:01:37 root by boot-config-loader + 1 2013-12-13 15:59:31 root by boot-config-loader + 2 2013-12-12 21:56:22 vyos by cli + 3 2013-12-12 21:55:11 vyos by cli + 4 2013-12-12 21:27:54 vyos by cli + 5 2013-12-12 21:23:29 vyos by cli + 6 2013-12-12 21:13:59 root by boot-config-loader + 7 2013-12-12 16:25:19 vyos by cli + 8 2013-12-12 15:44:36 vyos by cli + 9 2013-12-12 15:42:07 root by boot-config-loader + 10 2013-12-12 15:42:06 root by init + + [edit] + vyos@vyos# + +You can rollback configuration using the rollback command, however this +command will currently trigger a system reboot. + +.. code-block:: sh + + vyos@vyos# compare 1 + [edit system] + >host-name vyos-1 + [edit] + vyos@vyos# rollback 1 + Proceed with reboot? [confirm][y] + Broadcast message from root@vyos-1 (pts/0) (Tue Dec 17 21:07:45 2013): + The system is going down for reboot NOW! + [edit] + vyos@vyos# + +VyOS also supports saving and loading configuration remotely using SCP, FTP, +or TFTP. + +.. code-block:: sh + + vyos@vyos# save [tab] + Possible completions: + <Enter> Save to system config file + <file> Save to file on local machine + scp://<user>:<passwd>@<host>/<file> Save to file on remote machine + ftp://<user>:<passwd>@<host>/<file> Save to file on remote machine + tftp://<host>/<file> Save to file on remote machine + vyos@vyos# save tftp://192.168.0.100/vyos-test.config.boot + Saving configuration to 'tftp://192.168.0.100/vyos-test.config.boot'... + ######################################################################## 100.0% + Done |