Since upgrading to Dragonfish boot-pool is read only / Need CheckMK agent

TrueNAS General
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1

Hey guys

Since the upgrade to Dragonfish the boot-pool is set to read-only and I’m not able to install the CheckMK agent to /bin/.

Is this a bug or set for security reasons and If yes, I there a way to install the CheckMK agent in another way? Or temporary set to write, install the agent and make it again as read only?

Greetz
Ovrld

2

It is by design, as TrueNAS is an appliance and you aren’t meant to be installing stuff directly into the OS. You can disable that protection following these instructions:

3

So the only way to monitor TrueNAS with CheckMK (or other tools which need an agent) is to use the developer mode?

Monitor = Necessary on productive environments
Developer Mode = Don’t use on productive environments

:>

4

Or, I guess, use a monitoring tool that doesn’t required that a binary be installed as part of the OS. Installing binaries as part of the TrueNAS OS has never been supported or recommended, and I expect that if anything, it’s going to get more locked-down as time goes on.