Viewing posts by Joe Julian

How to configure linux vxlans with multiple unicast endpoints

Joe Julian 12 months ago

Sometimes you just can't use multicast. Some cloud providers just do not provide it. In that scenario, you need to configure your vxlan layer using unicast addresses. This is done easily using iproute2.

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Truncating open log files

Joe Julian 1 year, 3 months ago

There are a number of applications that open a log file and just keep writing to it. This is, of course, a problem when you rotate logs as the application just keeps writing to the renamed log instead of opening the new one.

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One more reason that GlusterFS should not be used as a SaaS offering

Joe Julian 2 years, 11 months ago

I filed a bug back in July 2013 asserting that a "feature" in the gluster CLI was a potential security bug. I've recently had that bug rejected as "Not a bug" so here it is.

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One single IP address won't forward but all the rest do

Joe Julian 3 years, 8 months ago

I had a user report that one node couldn't access the voip server over the ipsec vpn, but all the rest would. Perplexing. Not only could any other node on the remote network connect to the server, but I could ping the node that wouldn't talk from that server.

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GlusterFS Split-Brain Recovery Made Easy

Joe Julian 3 years, 10 months ago

Split brain. Sounding like something from a B movie about zombies, it's probably more terrifying to data storage people than flesh eating undead would be.

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