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From Avinash sridharan <avin...@mesosphere.io>
Subject Re: Review Request 54717: Modified isolator for dynamic addition/deletion of CNI networks.
Date Sun, 18 Dec 2016 02:11:22 GMT


> On Dec. 17, 2016, 3:28 p.m., Qian Zhang wrote:
> > src/slave/containerizer/mesos/isolators/network/cni/cni.cpp, lines 1159-1170
> > <https://reviews.apache.org/r/54717/diff/4/?file=1588480#file1588480line1159>
> >
> >     Just curious in which case `getNetwork` will succeeds but `getNetworkConfigJSON()`
will fail?

One case I can think of is if the operator ends up removing the file between a call to `getNetwork`
and `getNetworkConfigJSON` . Highly unlikely, but possible.


- Avinash


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On Dec. 17, 2016, 8:19 a.m., Avinash sridharan wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/54717/
> -----------------------------------------------------------
> 
> (Updated Dec. 17, 2016, 8:19 a.m.)
> 
> 
> Review request for mesos, Jie Yu and Qian Zhang.
> 
> 
> Bugs: MESOS-6567
>     https://issues.apache.org/jira/browse/MESOS-6567
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> If the `network/cni` isolator sees a cache-miss during the `prepare`
> phase, it will try to look for the CNI network on disk before giving
> up. This allows for the dynamic addition of CNI networks without the
> need for agent restart.
> 
> During `isolate` or `prepare` if for a given network, the isolator is
> unable to read the corresponding configuration file, or finds and
> error in the existing configuration file, it will remove the network
> from the in-memory cache. This allows dynamic deletion of CNI
> configurations from the `network/cni` isolator.
> 
> 
> Diffs
> -----
> 
>   src/slave/containerizer/mesos/isolators/network/cni/cni.hpp b8fc755a8dd4757d904f7e97a71d3cf7f29d2033

>   src/slave/containerizer/mesos/isolators/network/cni/cni.cpp ddb4d33e9ecd0ffd118e8e68cb7ec90346b08049

> 
> Diff: https://reviews.apache.org/r/54717/diff/
> 
> 
> Testing
> -------
> 
> make check
> 
> Manual testing with addition of a non-existent CNI configuration.
> 
> 
> Thanks,
> 
> Avinash sridharan
> 
>


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