“ORA-24454: client host name is not set” when connecting from Ubuntu instance on AWS EC2

So I have this Ubuntu client connecting to Oracle Database (the server). Changed its host name late last week, and then the users realized that the app is no longer working correctly… Thankfully, it’s a configuration issue which I resolved with help from Stack Overflow (of course). Simply update /etc/hosts with the correct host name […]

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Claire Lew: What the best leaders do

Excerpts from her recent post that resonate so well with me of late. Create clarity. To create the best working environment for your team, you must create clarity. Ensure psychological safety. Your success as a manager is contingent on how honest people are willing to be with you. Let go. When you’re an individual contributor, […]

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Late as a Cygwin user…

… but hey, better late than never! So I was just complaining about how PuTTY doesn’t seem to handle SSH keys (e.g. AWS, Azure) very well, and then I came to (belated) realization that because rsync can be used in Windows via Cygwin, so can ssh. Now I don’t waste time in a UI managing […]

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SOLVED: rrd.h not found

I was trying to compile collectd on a old CentOS 6 host, and ./configure complained that rrdtool couldn’t be found; e.g. rrdtool . . . . . . . no (rrd.h not found) I’d intended to use rrdtool to collect instance-level metrics and then graph ’em out with CGP, so it was pretty annoying. TIL that […]

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