Hello. Can I install veeam backup agent somehow?
Only in a vm, a system-d nspawn container often called scale-jail or if it’s available as a docker image as an app. Truenas is an appliance os an does not support adding new packages via apt. For this reason, apt has been disabled for a long time. People thought Truenas was just another Linux distro, ran apt and bricked their installation.
If you have a reasonable explanation why you need it, you can create a feature request to get it included in the base installation. But you need a certain nukber of votes and if it gets accepted, don’t expect it will get implemented immediately.
…though I’d think the odds of adding a piece of closed-source, commercial software to the base install are pretty much zero. But I’m not sure why it would be desired–if you want to back up to the NAS, you’d run the agent on whatever client computer(s) you wanted to back up; the NAS is just where the data is stored.
I need to install veeam backup agent to transfer copies from trunas to cloud storage Veeam Cloud.
can you send me an example or instructions to do something similar on TrueNAS?
I’m not familiar with the veeam backup agent, but after somge googleling, running it inside a docker container seems to be impossible. That leaves running it inside a vm (windows or linux), or you could run it inside a container and follow Stux Jail tutorial to setup a jail. The linked tutorial is for running docker inside the jail, but you should be able to graps the basics (mounting datasets inside the jail and networking) and then installing the agent however it is done on linux.