----- Original Message -----
From: "Amedeo Salvati" <amedeo@oscert.net> To: users@ovirt.org Sent: Tuesday, November 4, 2014 5:22:24 PM Subject: [ovirt-users] using ovirt-scheduler-proxy
hello guys,
I'm triyng to use ovirt-scheduler-proxy, and for this, now, I'm starting with examples available on:
https://github.com/oVirt/ovirt-scheduler-proxy/tree/master/doc/plugin_sample...
so, on ovirt 3.5 fresh installation I've installed ovirt-scheduler-proxy package (by yum), then I've downloaded from above link host_memory_balance.py file under /usr/share/ovirt-scheduler-proxy/plugins directory, I've changed the connection string due to reflect my ovirt engine hostname/port/user/password, and finally I've started the service:
service ovirt-scheduler-proxy start
on log ovirt-scheduler-proxy.log I got:
[root@engine ovirt-scheduler-proxy]# cat /var/log/ovirt-scheduler-proxy/ovirt-scheduler-proxy.log Tue, 04 Nov 2014 16:01:17 INFO [process:MainProcess, thread:MainThread] Setting up server Tue, 04 Nov 2014 16:01:17 INFO [process:MainProcess, thread:MainThread] Loading modules from /usr/share/ovirt-scheduler-proxy/plugins Tue, 04 Nov 2014 16:01:17 INFO [process:MainProcess, thread:MainThread] Loading analyzer from /usr/lib/python2.6/site-packages/ovirtscheduler Tue, 04 Nov 2014 16:01:17 INFO [process:MainProcess, thread:MainThread] [Request:Main][Method:loadModules] - Trying to load the following files: ['host_memory_balance'] Tue, 04 Nov 2014 16:01:17 DEBUG [process:MainProcess, thread:Thread-1] [Request:Main][Method:PythonMethodRunner] - running ['python', '-c', "import loader; loader.loader().analyze('/usr/share/ovirt-scheduler-proxy/plugins', 'host_memory_balance')"] in /usr/lib/python2.6/site-packages/ovirtscheduler Tue, 04 Nov 2014 16:01:18 DEBUG [process:MainProcess, thread:MainThread] [Request:Main][Method:loadModules] - script: ['python', '-c', "import loader; loader.loader().analyze('/usr/share/ovirt-scheduler-proxy/plugins', 'host_memory_balance')"] Tue, 04 Nov 2014 16:01:18 INFO [process:MainProcess, thread:MainThread] [Request:Main][Method:loadModules] - registering: ('host_memory_balance', ('host_memory_balance', 'do_balance', 'selects a vm from the most over utilized vm to migrate.\n if safe_selection is true selects the smallest vm from the host\n if safe_selection is false try and take a vm larger then the amount of memory the host is missing', 'minimum_host_memoryMB=[0-9]*;safe_selection=True|False')) Tue, 04 Nov 2014 16:01:18 INFO [process:MainProcess, thread:MainThread] [Request:Main][Method:loadModules] - registering::loaded- filters:{} scores:{} balancers:{'host_memory_balance': ('selects a vm from the most over utilized vm to migrate.\n if safe_selection is true selects the smallest vm from the host\n if safe_selection is false try and take a vm larger then the amount of memory the host is missing', 'minimum_host_memoryMB=[0-9]*;safe_selection=True|False')} Tue, 04 Nov 2014 16:01:18 INFO [process:MainProcess, thread:MainThread] Publishing API [root@engine ovirt-scheduler-proxy]#
but after that on web ui I can't see any change under cluster policy and under Configure -> Cluster Policies (host_memory_balance balancers is not displayed)
what did I miss?
- update engine configuration (use ovirt-config --set KEY_NAME=KEY_VALUE): * ExternalSchedulerServiceURL=http://<host>:18781/ * ExternalSchedulerEnabled=true - restart ovirt-engine service. - under configure->cluster_policy see that the balance function was added (should be in manage policy units- you will see it in the main dialog as well). - clone current cluster's used cluster policy (probably none - prefer it to have no balancing modules to avoid conflicts), name it 'your_name' and set it with the external function - replace cluster's cluster policy with newly created one (in edit cluster dialog). Thanks, Gilad.
Best regards Amedeo Salvati
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