Yeri Tiete

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Powerdns no answer on A records and others

· Errors, Linux, Networking, Software

Observed:

mother ~ # dig mother.titify.com

; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> mother.titify.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12227
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;mother.titify.com. IN A

;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Sep 28 18:08:19 2013
;; MSG SIZE rcvd: 35

As you can see, there is a QUESTION section, but no ANSWER. This is an example with a CNAME:

Hint of the day: run-parts and not executing files

· Errors, Linux, Software, Virtualisation

If you have a rc.local looking like this:

/bin/run-parts /etc/rc.local.d

and files in /etc/rc.local.d looking like this

hostname.sh sshkeys.sh firstboot.sh

it’s not going to work.

Why, you ask, after cursing and shouting for the past hour?

because run-parts ignores files with dots (".") and/or .sh files.

Yes. True story.

rename all the files to:

hostname sshkeys firstboot

and your problem will be solved (and of course chmod +x them).

Hint of the day: @digitalocean and not mounting sshfs at boot

· Linux, Networking, Software, Virtualisation

In /etc/fstab, be sure to add the option:

_netdev

As it will attempt to start the network mounted sshfs before networking has been started.

The entire line looks like this:

user@host:/some/dir /local/path fuse.sshfs defaults,idmap=user,_netdev  0 0

From the man pages:

_netdev

The filesystem resides on a device that requires network access (used to prevent the system from attempting to mount these filesystems until the network has been enabled on the system).