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Date: Wed, 25 May 2016 13:27:52 +0800
Message-ID: <CAOs_uxwiSkHoyuWXStsHCyDSm-p3tAad5eOYq4U_JUyV7oLwGg@mail.gmail.com>
Subject: Re: "Appropriating" an existing process into mesos task
From: Guangya Liu <gyliu513@gmail.com>
To: user@mesos.apache.org
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archived-at: Wed, 25 May 2016 05:28:00 -0000

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Hi Krishnanarayanan,

How did you create your VM on baremetal servers with Mesos? Are you
leveraging mesos executor or some other components?

The framework have checkpoint logic which can recover tasks in one
framework back to original state, please refer to
https://github.com/apache/mesos/blob/master/include/mesos/mesos.proto#L233-L237
, does this help?

Thanks,

Guangya

On Wed, May 25, 2016 at 12:25 PM, Krishnanarayanan VR <
krishnanvr@phonepe.com> wrote:

>
> Hello:
>
> We've been using mesos to allocate kvm VMs on our baremetal servers.
>
> The high level flow is as below:
> o user requests a VM with nCpus and mMem.
> o framework picks up an appropriate offer and spins a new VM
> o the baremetal on which the VM was spun is noted into a json file.
>  cpu/mem resources are also noted in the same file.
> o In the event that the framework dies and restarts, the file is processed
> first and a VM needs to be created iff the VM does not exist ( for whatever
> reason ).  data for each VM is stored in a file likewise.
>
> My question/requirement is:
>
> The framework restart does not have any impact on the individual kvm VMs
> on the mesos slave baremetal servers. when the framework restarts, if the
> VM is already present, I'd just like to add it to the TASK_RUNNING status
> with the noted resources, without having to go through the actual executor.
>
> Any pointers on how this can be achieved ?
>
> Thanks
>

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<div dir=3D"ltr">Hi Krishnanarayanan,<div><br></div><div>How did you create=
 your VM on baremetal servers with Mesos? Are you leveraging mesos executor=
 or some other components?</div><div><br></div><div>The framework have chec=
kpoint logic which can recover tasks in one framework back to original stat=
e, please refer to=C2=A0<a href=3D"https://github.com/apache/mesos/blob/mas=
ter/include/mesos/mesos.proto#L233-L237">https://github.com/apache/mesos/bl=
ob/master/include/mesos/mesos.proto#L233-L237</a> , does this help?</div><d=
iv><br></div><div>Thanks,</div><div><br></div><div>Guangya</div></div><div =
class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, May 25, 2016 a=
t 12:25 PM, Krishnanarayanan VR <span dir=3D"ltr">&lt;<a href=3D"mailto:kri=
shnanvr@phonepe.com" target=3D"_blank">krishnanvr@phonepe.com</a>&gt;</span=
> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=
=3D"gmail_extra"><span style=3D"font-size:12.8px">Hello:=C2=A0</span><div s=
tyle=3D"font-size:12.8px"><br></div><div style=3D"font-size:12.8px">We&#39;=
ve been using mesos to allocate kvm VMs on our baremetal servers. =C2=A0</d=
iv><div style=3D"font-size:12.8px"><br></div><div style=3D"font-size:12.8px=
">The high level flow is as below:</div><div style=3D"font-size:12.8px">o u=
ser requests a VM with nCpus and mMem.</div><div style=3D"font-size:12.8px"=
>o framework picks up an appropriate offer and spins a new VM</div><div sty=
le=3D"font-size:12.8px">o the baremetal on which the VM was spun is noted i=
nto a json file. =C2=A0cpu/mem resources are also noted in the same file.=
=C2=A0</div><div style=3D"font-size:12.8px">o In the event that the framewo=
rk dies and restarts, the file is processed first and a VM needs to be crea=
ted iff the VM does not exist ( for whatever reason ). =C2=A0data for each =
VM is stored in a file likewise.=C2=A0</div><div style=3D"font-size:12.8px"=
><br></div><div style=3D"font-size:12.8px">My question/requirement is:</div=
><div style=3D"font-size:12.8px"><br></div><div style=3D"font-size:12.8px">=
The framework restart does not have any impact on the individual kvm VMs on=
 the mesos slave baremetal servers. when the framework restarts, if the VM =
is already present, I&#39;d just like to add it to the TASK_RUNNING status =
with the noted resources, without having to go through the actual executor.=
=C2=A0</div><div style=3D"font-size:12.8px"><br></div><div style=3D"font-si=
ze:12.8px">Any pointers on how this can be achieved ?=C2=A0</div><div style=
=3D"font-size:12.8px"><br></div><div style=3D"font-size:12.8px">Thanks</div=
></div></div>
</blockquote></div><br></div>

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