openrc -- prioritize services in a runlevel?

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

Hi,

I have a box with 7 nics. I've renamed the interfaces according to the physical location of the port on the box. The problem is, when I list ip addresses they show up out of order.

I'm setting this box up as a VM host which will contain 2 firewalls of different operating systems and an IPS and VPN, so I have each NIC attached to a bridge and a tap.

ip address list | grep -v '^ ' | wgetpaste is here: https://bpaste.net/show/6595315b12d4

I'd like to show in this order:

lo
cnet0
lan0-lan6 (in numerical order)
tap0-tap6 (in numerical order)
br0-br6 (in numerical order)

The lan interfaces show up in the same order they did by default, but the names are not intuitive, they're using enp4s0, enp0s20f0-3, enp5s0f0-1. I think it's listing them in order of the PCI bus being scanned during boot.

Is there a way to get them to show up in my preferred order?

Thanks.

NeddySeagoon · Posted: Sat Jan 16, 2016 11:55 am Post subject:

1clue,

khayyam

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

Guys,

I mean that I want to change the order they're listed in, and sort won't work because all the entries are multi-line.

I've already renamed the interfaces according to the physical order on the board. Both the old ethN and the persistent enp* names are scrambled with respect to physical order on the board.

I can't do the initialization order because different custom runlevels will have different sets of nics enabled.

I suspect what I'm trying for won't happen.

Thanks.

khayyam · Posted: Sat Jan 16, 2016 7:52 pm Post subject:

Cyker · Veteran Joined: 15 Jun 2006 Posts: 1746

Sorry, trying to clarify what you mean; Are you saying everything is right (Names, IP addresses etc), just the order they appear when you list them is wrong?

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

@Cyker,

Yes.

I realize there's probably no way to convince the system to rearrange the default listing order, so it's a dead end.

The persistent interface names were indecipherable. Past tense.
The old eth* network names were in random physical order on the board (meaning looking at the back of the computer, they hopped around. Past tense.
I renamed the interfaces to lan0-lan6 and cnet0 (which is a maintenance-only nic by my choice, will not have Internet access.)
I'm investigating a way to sort the interfaces with multi-line output, so that IP addresses and such follow the nic correctly.

I'm fine with writing a script to do this, just gotta have time to do it.

Thanks.

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

In case anyone's interested this is my solution.

It's a bit of a hack but it works for my purposes. The 'iplist' script could be replaced with 'ip address list'

khayyam · Posted: Mon Jan 18, 2016 11:10 pm Post subject:

1clue ... I see, by "list" you mean the output of 'ip' ... a few possible improvements:

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

Khayyam,

Sed doesn't see $I. Bash does. Bash sees the outer double quote and performs its substitutions, then passing the value to sed.

Interesting changes, I'll look closer.

Thanks.

khayyam · Posted: Tue Jan 19, 2016 1:47 am Post subject:

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

Khayyam,

I posted a working script. I've been doing it that way for more than a decade.

You can explain it some other way if you want. Let me know if you figure it out.

khayyam · Posted: Tue Jan 19, 2016 5:52 am Post subject:

1clue · Advocate Joined: 05 Feb 2006 Posts: 2569

You're right. I must have been pretty tired.

My inner script, iplist, shows the interfaces numbered correctly, my outer script (the one I showed) shows the interfaces in order but with wrong numbers. I didn't notice the inconsistency. I was going off the idea that: