I need to run a Perl script, but make it think that it is in a different timezone (GMT) than the server is configured to use normally.
I would like to do this without modify the existing script, by means of some environment variables or any configuration settings if possible.
This is for OS X and its vendor Perl (v5.12.4).
I need to create a user account and a lot of files for that user with Puppet.
Works fine with the most straightforward approach, but on every file resource I have to specify owner => 'theuser', which seems horribly redundant (if I don't they end up root-owned).
Is there a way to have a scoped default for the owner? Or something like sudo where puppet runs under that user for a certain set of resources?
I am told that there are two major (only?) ISP in China - China Telecom (CT) and China Unicom (CU) - and that traffic routed between the two is really slow, almost as bad as traffic that has to cross the Great Firewall. To work around this problem, you (as a web site operator in China) are supposed to get two external IP addresses for your web site, one for each provider.
Feel free to comment on if that is really necessary, but if it is, how would one implement the proper routing for this? Put both IP addresses into DNS for the same host name and let the client somehow figure out which one is better? Separate host names?
For a production sharded MongoDB installation we need 3 configuration servers. According to the documentation "the config server mongod process is fairly lightweight and can be ran on machines performing other work". However, in the default configuration, they all have journalling enabled, and with preallocation this takes up 3 GB of disk space. I assume that the actual data and transaction volume of a config server is quite small, so that this seems a bit too much.
Is there a way to (safely!) run these config servers with much less disk use for the journal? Do I need journalling at all on config servers? Can I set the journal size to be smaller?