pmgbanner: don't die if getting addr fails but running in container

[pmg-api.git] / src / bin / pmgbanner

#!/usr/bin/perl

use strict;
use warnings;

use PVE::INotify;
use PVE::Tools;
use PMG::Cluster;

sub detect_container {

    my $ct;
    if (-f '/run/systemd/container') {
	$ct = PVE::Tools::file_read_firstline('/run/systemd/container');
    }
    return $ct;
}

my $nodename = PVE::INotify::nodename();
my $localip = eval { PMG::Cluster::remote_node_ip($nodename, 1) };
if (my $err = $@) { # FIXME: HACK: cope better with managed CTs and DHCP
    my $in_ct = detect_container();
    die $err if !$in_ct;
    warn "ignore failure to get local IP of $nodename, we're in a container ($in_ct)\n";
    $localip = '<uknown>';
}

my $xline = '-' x 78;

my $banner = '';

if ($localip) {
    $banner .= <<__EOBANNER;

$xline

Welcome to the Proxmox Mail Gateway. Please use your web browser to 
configure this server - connect to:

  https://${localip}:8006/

$xline

__EOBANNER

}

open(ISSUE, ">/etc/issue");

print ISSUE $banner;

close(ISSUE);

exit (0);