Re: [ovirt-users] Power Management with python SDK
On 12/01/2015 03:16 PM, Giulio Casella wrote:
> Hi everybody,
> I'm trying to enable power management on a host using python, but I'm stuck.
>
> Previously (ovirt 3.5) I directly wrote power management parameters into
> PowerManagement structure (and everything was working fine), but
> starting from 3.6 this is not possible.
>
> This is what I do now:
>
> agent = params.Agent()
> agent.set_options(params.Options())
> agent.set_type("ilo3")
> agent.set_username("admin")
> agent.set_password("mysecret")
> agent.set_address("172.20.20.1")
>
> agents=params.Agents()
> agents.add_agent(agent)
>
> pm=params.PowerManagement()
> pm.set_agents(agents)
> pm.set_enabled(True)
>
> myhost=api.hosts.get("myhost")
> myhost.set_power_management(pm)
> try:
> myhost.update()
> except Exception as e:
> print "Error: %s" % e
>
> and I get:
>
> Error:
> status: 400
> reason: Bad Request
> detail: Cannot edit Host. Power Management is enabled for Host but no
> Agent type selected.
>
>
> If I dont't enable PM (pm.set_enabled line above) I get no error, but no
> agent is added.
>
> My software is:
> - ovirt-engine-3.6.0.3-1.el6
> - ovirt-engine-sdk-python-3.6.0.3-1.el6
> on a CentOS 6.6 distro.
>
> Any ideas?
>
> Thanks in advance,
> Giulio
In 3.6 fencing agents have been converted into a sub-collection of the
host entity:
https://.../ovirt-engine/api/hosts/{host:id}/fenceagents
This means that the recommended way to add/remove/update fencing agents
now in Python is now this:
---8<---
# Find the host:
host = api.hosts.get(name="myhost");
# Enable power management:
host.get_power_management().set_enabled(True)
host.update()
# Add the fencing agent:
agent = params.Agent()
agent.set_options(params.Options())
agent.set_type("ilo3")
agent.set_username("admin")
agent.set_password("mysecret")
agent.set_address("172.20.20.1")
agent.set_order(1);
host.fenceagents.add(agent)
--->8---
You can use this as a workaround. However the mechanism used in 3.5
should continue working in 3.6. If it doesn't it is a bug. The script
that you shared is the one you used in 3.5?
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[ovirt-users] Power Management with python SDK
Hi everybody,
I'm trying to enable power management on a host using python, but I'm stuck.
Previously (ovirt 3.5) I directly wrote power management parameters into
PowerManagement structure (and everything was working fine), but
starting from 3.6 this is not possible.
This is what I do now:
agent = params.Agent()
agent.set_options(params.Options())
agent.set_type("ilo3")
agent.set_username("admin")
agent.set_password("mysecret")
agent.set_address("172.20.20.1")
agents=params.Agents()
agents.add_agent(agent)
pm=params.PowerManagement()
pm.set_agents(agents)
pm.set_enabled(True)
myhost=api.hosts.get("myhost")
myhost.set_power_management(pm)
try:
myhost.update()
except Exception as e:
print "Error: %s" % e
and I get:
Error:
status: 400
reason: Bad Request
detail: Cannot edit Host. Power Management is enabled for Host but no
Agent type selected.
If I dont't enable PM (pm.set_enabled line above) I get no error, but no
agent is added.
My software is:
- ovirt-engine-3.6.0.3-1.el6
- ovirt-engine-sdk-python-3.6.0.3-1.el6
on a CentOS 6.6 distro.
Any ideas?
Thanks in advance,
Giulio
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Re: [ovirt-users] Power Management with python SDK
Hi Juan,
Il 01/12/2015 16:48, Juan Hernández ha scritto:
On 12/01/2015 03:16 PM, Giulio Casella wrote:
Hi everybody,
I'm trying to enable power management on a host using python, but I'm stuck.
Previously (ovirt 3.5) I directly wrote power management parameters into
PowerManagement structure (and everything was working fine), but
starting from 3.6 this is not possible.
This is what I do now:
agent = params.Agent()
agent.set_options(params.Options())
agent.set_type("ilo3")
agent.set_username("admin")
agent.set_password("mysecret")
agent.set_address("172.20.20.1")
agents=params.Agents()
agents.add_agent(agent)
pm=params.PowerManagement()
pm.set_agents(agents)
pm.set_enabled(True)
myhost=api.hosts.get("myhost")
myhost.set_power_management(pm)
try:
myhost.update()
except Exception as e:
print "Error: %s" % e
and I get:
Error:
status: 400
reason: Bad Request
detail: Cannot edit Host. Power Management is enabled for Host but no
Agent type selected.
If I dont't enable PM (pm.set_enabled line above) I get no error, but no
agent is added.
My software is:
- ovirt-engine-3.6.0.3-1.el6
- ovirt-engine-sdk-python-3.6.0.3-1.el6
on a CentOS 6.6 distro.
Any ideas?
Thanks in advance,
Giulio
In 3.6 fencing agents have been converted into a sub-collection of the
host entity:
https://.../ovirt-engine/api/hosts/{host:id}/fenceagents
This means that the recommended way to add/remove/update fencing agents
now in Python is now this:
---8<---
# Find the host:
host = api.hosts.get(name="myhost");
# Enable power management:
host.get_power_management().set_enabled(True)
host.update()
# Add the fencing agent:
agent = params.Agent()
agent.set_options(params.Options())
agent.set_type("ilo3")
agent.set_username("admin")
agent.set_password("mysecret")
agent.set_address("172.20.20.1")
agent.set_order(1);
host.fenceagents.add(agent)
--->8---
This piece of code is working, thanks! But only if host.update() is
called after adding an agent (e.g moving host.update() at the bottom). I
don't have any fence agent configured before, and setting enabled=True
and calling update, lead to the 400 HTTP error.
You can use this as a workaround. However the mechanism used in 3.5
should continue working in 3.6. If it doesn't it is a bug. The script
that you shared is the one you used in 3.5?
In 3.5 I used:
myhost=api.hosts.get("myhost")
pm=params.PowerManagement(type_="ilo3",enabled=True,address="172.20.20.1",username="admin",password="mysecret")
myhost.set_power_management(pm)
myhost.update()
not working in 3.6 (according to bug
https://bugzilla.redhat.com/show_bug.cgi?id=1118329, marked CLOSED
WONTFIX, there is no backward compatibility).
Anyway I reached my goal, thank you!
Giulio
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