Question
How to avoid blacklisting droplets due to constant heavy network usage
- Posted October 20, 2016
- NetworkingHigh AvailabilityLoad BalancingCoreOS
Hello DO,
After some struggle finding info about DO’s networking specifics , I was able to find this statements:
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Each physical hypervisor node has multiple 1Gbps network links (up and down).
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These connections are shared by the droplets on the node
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If your droplet is constantly above 300Mbps, sooner or later it will be blacklisted
We want to deploy our mobile backend services which have constant heavy network usage profile, so I was hoping you can give us few answers about how to stay safe on your infrastructure, while having some sane networking performance.
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Are the droplets safe if we have many of them ( > 100 ) that are constantly using 290 Mbps ?
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Can we go safely above 300Mbps with the private network ?
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What happens if we hit a hypervisor that has 3 droplets already constantly using > 300 Mbps, is there any traffic shaping applied in that case ?
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Is there any connection between the instance size and the 300Mbps limit
Regards, Bobby
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Some information is a bit out of date. In many of our data centers, hypervisors now have 40Gbps connections (which should answer the question about multiple other droplets).
The 300Mbps is a recommendation but not a hard limit. We began advising this number as it falls below any threshold that could potentially cause an issue if a user failed to reach out about high usage beforehand (such as people seeding (legal) torrents). If you expect to see this kind of usage I would recommend opening a ticket with our support team to discuss options. They can advice on best practices and if needed, make a note on your account regarding the expected bandwidth usage.
Thanks a lot for the info.