Having read through the docs and RabbitMQ in Action, creating a RabbitMQ cluster seems straightforward enough, but upgrading or patching an existing RabbitMQ cluster seems to require the whole cluster to be restarted.
Is there a way to combine clustering, shovel, federation, and load balancing to make a rolling upgrade possible without losing queues or messages, or have I missed something slightly more obvious?
I have one computer on my domain that has suddenly stopped receiving software updates via group policy. Domain logins still work, and group policy on the machine is still being updated, so it knows that there are new packages to install and where to look for them, but every time it tries to install a package, it throws a 1622 error (location not found).
Logged in users can reach the same network shares, and every other computer on network is installing the packages. Further investigation found that other services running as "System" on the problematic computer are also unable to authenticate to network shares.
How do I diagnose/fix this computer's account in Active Directory? The computer account exists, and is a member of "Domain Computers" - or is there something else I should be looking at?
The question is: How does one fix a broken machine account in AD without reimaging?
Is it possible to add a new resource type to an RHEL or CentOS 6.x cluster, in order to allow Sphinx fulltext search to run alongside MySQL?
The clusters are managed using luci/ricci and cman.
I understand that Microsoft won't be releasing another Windows Small Business Server after 2011, yet many businesses have too many users for the "Essentials" edition of Windows Server 2012, not really enough for a full Exchange deployment, but don't want to move to the cloud because of jurisdictional issues.
What's the upgrade path after SBS 2011, and is there any point in moving from an earlier SBS to SBS 2011 if that is going to be the end of the line?
Given a choice between the current database-level HA options for MySQL, like Master-Master, Cluster, or Galera, and vSphere HA for the machine running the MySQL master, which would you use or combine and why?
I want to set up a site-to-site VPN using multiple ISPs and WAN links, such that all traffic to/from site A goes via site B, and the implementation details are completely transparent to the LAN at each end.
I've had a good look at the Peplink devices that have been widely recommended in response to similar questions, but site B will probably be a cloud-hosted environment. That makes a hardware solution less than ideal. I've also checked out a couple of service providers who offer link aggregation as a service, but for a fairly high price.
Can this be done with a combination of open protocols, to avoid sticker shock and vendor lock-in?