os-autoinst-distri-rocky/lib/tapnet.pm
Adam Williamson 170ef0733a Use nmcli for static network stuff, not ifcfg files
This should work even if the ifcfg plugin is not present (hi,
CoreOS) or 'predictable' (har) network names are on.

Signed-off-by: Adam Williamson <awilliam@redhat.com>
2020-09-02 14:49:29 -07:00

75 lines
2.3 KiB
Perl

package tapnet;
use strict;
use base 'Exporter';
use Exporter;
use testapi;
our @EXPORT = qw/clone_host_file setup_tap_static get_host_dns/;
sub clone_host_file {
# copy a given file from the host into the guest. Mainly used
# for networking config on tap tests. this is pretty crazy, but
# SUSE do almost the same thing...
my $file = shift;
my $text = '';
open(my $fh, '<', $file);
while (<$fh>) {
$text .= $_;
}
# escape any " characters in the text...
$text =~ s/"/\\"/g;
assert_script_run "printf \"$text\" > $file";
# for debugging...
assert_script_run "cat $file";
}
sub setup_tap_static {
# this is a common thing for tap tests, where we set up networking
# for the system with a static IP address and possibly a specific
# hostname
my $ip = shift;
my $hostname = shift || "";
if ($hostname) {
# assigning output of split to a single-item array gives us just
# the first split
my ($short) = split(/\./, $hostname);
# set hostname
assert_script_run "hostnamectl set-hostname $hostname";
# add entry to /etc/hosts
assert_script_run "echo '$ip $hostname $short' >> /etc/hosts";
}
# use host's name servers (this is usually going to be correct,
# tests which don't want this can overwrite resolv.conf)
my @dns = get_host_dns();
my $dnstext = 'ipv4.dns "' . join(", ", @dns) . '"';
# bring up network
# this gets us the name of the first connection in the list,
# which should be what we want
my $connection = script_output "nmcli --fields NAME con show | head -2 | tail -1";
assert_script_run "nmcli con mod '$connection' ipv4.method manual ipv4.addr $ip/24 ipv4.gateway 172.16.2.2 $dnstext";
assert_script_run "nmcli con down '$connection'";
assert_script_run "nmcli con up '$connection'";
# for debugging
assert_script_run "nmcli -t con show '$connection'";
# the above doesn't seem to reliably set up resolv.conf, so...
clone_host_file "/etc/resolv.conf";
}
sub get_host_dns {
# get DNS server addresses from the host
my @forwards;
open(FH, '<', "/etc/resolv.conf");
while (<FH>) {
if ($_ =~ m/^nameserver +(.+)/) {
push @forwards, $1;
}
}
return @forwards;
}
1;
# vim: set sw=4 et: