Hi ML,
In last a few days i've been working on new pluggable groups api.
The public group code is now independent from the backend of the
groups. Current code supports 2 backends :
- Configuration file (the old one)
- sqlite backend
The default groups backend is configuration file for now because
it is a little bit faster than sqlite backend.If you need to change
to sqlite backend what you need to do is go to : /etc/func/overlord.conf
and change:
backend = sqlite
group_db = /path/you/want
A new addition is groups cli, we will be able to control groups api
via cli with new stuff. Let see some cli examples :
(For testing purposes i added 100 test nonexisting minions range(100))
---------------------------------------------------------------------
Listing all of the current stuff
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 1
Host : 3
Host : 2
Host : 5
Host : 4
-----------------------------------------------------------------------
Adding a new group :
[root@fedorabig func]# func "*" group --ag "newgr"
[root@fedorabig func]#
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 1
Host : 3
Host : 2
Host : 5
Host : 4
Group : newgr
----------------------------------------------------------------------
Listing some of the groups by glob:
[root@fedorabig func]# func "*" group --lg "gr*"
GROUPS :
['group5']
[root@fedorabig func]#
-----------------------------------------------------------------------
Removing a group
[root@fedorabig func]# func "*" group --ag "tmpgr1"
[root@fedorabig func]# func "*" group --ag "tmpgr2"
[root@fedorabig func]# func "*" group --ag "tmpgr3"
[root@fedorabig func]# func "*" group --lg "*"
GROUPS :
['group5', 'newgr', 'tmpgr2', 'tmpgr3', 'tmpgr1']
[root@fedorabig func]# func "*" group --rg "tmpgr1"
[root@fedorabig func]# func "*" group --lg "*"
GROUPS :
['group5', 'newgr', 'tmpgr2', 'tmpgr3']
----------------------------------------------------------------------
Removing groups by globbing :
[root@fedorabig func]# func "*" group --rg "tmp*"
[root@fedorabig func]# func "*" group --lg "*"
GROUPS :
['group5', 'newgr']
----------------------------------------------------------------------
Adding hosts in group by globbing: (adding host from 0-9 in groups)
[root@fedorabig func]# func "*" group --ah "@group5:[0-9]"
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 1
Host : 0
Host : 3
Host : 2
Host : 5
Host : 4
Host : 7
Host : 6
Host : 9
Host : 8
Group : newgr
--------------------------------------------------------------------
Adding hosts in group by globbing with exclusion :
[root@fedorabig func]# func "*" group --e "@group:[1][2,4]" --ah "@group5:[1]
[0-5]"
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 1
Host : 0
Host : 3
Host : 2
Host : 5
Host : 4
Host : 7
Host : 6
Host : 9
Host : 8
Host : 11
Host : 10
Host : 13
Host : 15
Group : newgr
In above example we added all [1][0-5] and excluded [1][2,4] with that option
we dont need anymore the need of subgrouping, we subgroup on the fly :)
--------------------------------------------------------------------------
Listing hosts via globbing :
[root@fedorabig func]# func "*" group --lh "@group5"
['11', '10', '13', '15', '1', '0', '3', '2', '5', '4', '7', '6', '9', '8']
[root@fedorabig func]# func "*" group --lh "@group5:[1][0-5]"
['11', '10', '13', '15']
Example of exclusion :
[root@fedorabig func]# func "*" group --e "@group5:[1,3,5,7,9]" --lh
"@group5:*"
['11', '10', '13', '15', '0', '2', '4', '6', '8']
--------------------------------------------------------------------------
Removing hosts from a group via globbing :
[root@fedorabig func]# func "*" group --rh "@group5:[1-5]"
[root@fedorabig func]# func "*" group --lh "@group5:*"
['11', '10', '13', '15', '0', '7', '6', '9', '8']
Removing hosts via exclusion:
[root@fedorabig func]# func "*" group --e "@group5:[0,2,4,6,8]" --rh
"@group5:*"
[root@fedorabig func]# func "*" group --lh "@group5:*"
['0', '8', '6']
-------------------------------------------------------------------------------
You can also do the above operations on multiple groups at the same cli:
Adding on multiple groups :
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 0
Host : 6
Host : 8
Group : newgr
[root@fedorabig func]# func "*" group --ah "@group5:[1][5-9];@newgr:[2][0-5]"
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 0
Host : 6
Host : 8
Host : 19
Host : 18
Host : 15
Host : 17
Host : 16
Group : newgr
Host : 24
Host : 25
Host : 20
Host : 21
Host : 22
Host : 23
Listing on multiple
root@fedorabig func]# func "*" group --lh "@group5:[1][5-9];@newgr:[2][0-5]"
['24', '25', '23', '15', '21', '17', '16', '19', '18', '22', '20']
Removing on multiple:
[root@fedorabig func]# func "*" group --rh "@group5:[1][5-9];@newgr:[2][0-5]"
[root@fedorabig func]# func "*" group --la
Group : group5
Host : 0
Host : 6
Host : 8
Group : newgr
You can also use the --exclude keyword when working on multiple groups,but you
should be
sure that the number of operations match. If you work on 3 groups you should
have 3 groups
on exclude parameter also.
------------------------------------------------------------------------------------------------
ADDING NEW BACKENDS :
Adding new backends to groups shouldnt be hard what you need to do is just :
-put a file in /func/overlord/group directory
-extend the class /func/overlord/group/base.py BaseBackend and implement all
of its methods
-add your backend into choose_backend method in /func/overlord/group/base.py
- add your backend into /test/unittests/test_groups_api.py if it passes all
the tests you have a
new backend :)
-------------------------------------------------------------------------------------------------
For those who may want to try new api :
http://github.com/makkalot/func/tree/group
Comments,ideas ?
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