Wednesday, 8 September 2010

/etc/hosts or DNS - sorting it out on Red Hat Enterprise Linux

During my recent battle with Domino and hostnames ( more to come soon ), I stumbled upon this rather useful little configuration file: -

/etc/nsswitch.conf

in Red Hat Enterprise Linux 5.4.

Amongst other gems, it contains the magic line: -

hosts:      files dns

which means that hosts are looked up via /etc/hosts before heading off to the wacky world of DNS.

For the record, AIX uses an environment variable called NSORDER

export NSORDER=bind,local,nis

as per this wiki article: -

Installing and configuring IBM Lotus Domino 8.5 on AIX

Now is that useful, or what ?

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Note to self - use kubectl to query images in a pod or deployment

In both cases, we use JSON ... For a deployment, we can do this: - kubectl get deployment foobar --namespace snafu --output jsonpath="{...