Field notes / blog@zkybase
Willie Wheeler's devops blog. Twenty five entries on configuration management, continuous delivery, platforms, monitoring and the occasional detour, published between 2011 and 2013.
Try devops, cmdb or splunk.
In our previous post, we looked at how to use Splunk to identify the most volatile event codes over the past day. In this post we’ll revisit that topic in light of some good feedback, and then look at how to get the…
Read entryIn real time operational contexts, it’s important to monitor system metrics for major swings in value. Such swings, whether upward (“pops”) or downward (“drops”), often indicate a problem either on the horizon or else…
Read entryAt my new job we’re reigniting an effort to move to continuous delivery for our software releases. We figured that we could learn a thing or two from Facebook, so we reached out to, Facebook’s first release engineer and…
Read entry[Not a devops post, but I wanted to share this somewhere.] I’m the father of four wild and crazy kids, and the two older ones are at the age now (4th grade and 1st grade) that I’ve started trying to get them interested…
Read entryOne important issue that comes up when undertaking a configuration management effort is how to design “the schema” for configuration management data. Obviously there’s no one size fits all answer here. But there are a…
Read entryMost of the time, when organizations pursue a continuous delivery capability, they’re doing that in pursuit of increased agility. They want to be able to release software at will, with as little delay between the…
Read entryWhere large development teams and codebases are involved, code modularity is a key enabler for continuous delivery. At a high level this shouldn’t be too terribly surprising—it’s easier to move a larger number of…
Read entryThis is the first in what will be a series of posts on how to establish a continuous delivery pipeline. The eventual goal is to have an app that we can push out into production anytime we like, safely and with little…
Read entryOne lesson I’ve learned in building CMDBs is to cleanly separate the UI from the web service API. In the Java world, for example, this means that the API should be its own package (e.g., WAR file). The UI should be…
Read entryI recently ran into the situation in which I couldn’t get PKA to work when SSHing into my Ubuntu server. I checked the key pair (works fine SSHing into other servers), directory permissions, /etc/ssh/sshd_config…
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