topic Re: How to set up new IP addresses for an environment? in Administration and Deployment

How to set up new IP addresses for an environment?

JohnJPS — Thu, 13 Feb 2020 16:30:01 GMT

We have a 5-server environment (version 9.4M4, metadata server, two workspace servers, two midtier nodes) which need to get new IP addresses (due to, high level, new security requirements). Nothing else about the servers needs to change at all: same server name, etc.

Has anyone dealt with anything like that? This link suggests that we might be able to interpret the new IP range as a "DR" site which would apparently just give some warnings in some logs, and no big deal. Granted, what if a DR situation actually occurs... could we restore backups to yet another IP range and still just get warnings?

Another angle is to plumb the servers for IP references in configs and mass change them all (something to try in a test environment)... or are the IP's baked into impossible-to-find metadata databases too? (Aside: we are asking SAS directly too, but I'm always very interested in Community insights as well.)

Re: How to set up new IP addresses for an environment?

Kurt_Bremser — Thu, 13 Feb 2020 14:43:38 GMT

IIRC, SAS only works with the DNS names of servers, not with the numerical IP addresses. I would shut down the servers before the change, and restart after the change is made.

Re: How to set up new IP addresses for an environment?

angian — Thu, 13 Feb 2020 16:22:23 GMT

The only place I am aware of IPs being used is -Dmulticast.address=239.xxx.xx.xxx. The standard is usually 239 followed by the last three octets of the metadata server. On Windows, this value is found in the WebAppServer wrapper.conf.

Examples

.\SAS\Config\Lev1\Web\WebAppServer\SASServer1_1\conf\wrapper.conf

.\Config\Lev1\Web\WebAppServer\SASServer4_1\conf\wrapper.conf

On Linux this value is

.../config/Lev1/Web/WebAppServer/SASServer1_1/bin/setenv.sh

.../config/Lev1/Web/WebAppServer/SASServer4_1/bin/setenv.sh