[ensembl-dev] Are the IP address(es) for useastdb.ensembl.org fixed/static?

[Steve Trevanion]

Hi Kevin,

Short answer, no. In more detail, the database server sits behind a 
Classic Elastic Load Balancer. In order to scale with traffic Amazon 
dynamically associate IPs of other load balancers to this as required. 
The only stable record I'm afraid is the DNS CNAME. There's an old, but 
good article explaining it here:

https://aws.amazon.com/articles/best-practices-in-evaluating-elastic-load-balancing/

Amazon have recently released a 'Network Load Balancer', which can have 
static IPs, but our architecture does not allow to use this.

Can you speak again with your IT colleagues ? I am not a specialist in 
this area so I will talk next week with members of the EMBL-EBI network 
team to see if they can suggest any ways around this.

Regards,

Steve

On 07/02/2018 22:06, Ernst, Kevin wrote:
> Hello all,
>
> I'm working with the administrators of our in-house HPC cluster to 
> make firewall exceptions for the (US East) Ensembl MySQL servers.
>
> Our IT staff had an exception for the 'useastdb' server at one point, 
> but apparently the IP changed, and they're only able to enact firewall 
> exceptions based on IP addresses.
>
> I can see that the DNS record currently points to an AWS host (or 
> hosts). Are the corresponding IP addresses static, or are they likely 
> to change without notice (/e.g., /after the next reboot or if a DHCP 
> lease expires)?
>
> (I know very little about AWS, but I imagine that getting a fixed IP 
> reservation is something Amazon would want to charge you extra money for.)
>
> Thanks for your insights.
>
> --Kevin
>
>
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