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9ad54a082c
Detail: This gets rid of the patchdisk method of passing cmdline and authorized_keys to KVM system VMs. It instead passes them to a virtio socket, which the KVM guest reads from the character device /dev/vport0p1 during cloud-early-config. Tested to work on CentOS 6.3 and Ubuntu 12.04. Should work with even older versions of libvirt. Signed-off-by: Marcus Sorensen <marcus@betterservers.com> 1362691685 -0700
59 lines
1.8 KiB
Perl
59 lines
1.8 KiB
Perl
#!/usr/bin/perl -w
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#############################################################
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# This script connects to the system vm socket and writes the
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# authorized_keys and cmdline data to it. The system VM then
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# reads it from /dev/vport0p1 in cloud_early_config
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#############################################################
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use strict;
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use Getopt::Std;
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use IO::Socket;
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$|=1;
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my $opts = {};
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getopt('pn',$opts);
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my $name = $opts->{n};
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my $cmdline = $opts->{p};
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my $sockfile = "/var/lib/libvirt/qemu/$name.agent";
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my $pubkeyfile = "/root/.ssh/id_rsa.pub.cloud";
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if (! -S $sockfile) {
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print "ERROR: $sockfile socket not found\n";
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exit 1;
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}
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if (! -f $pubkeyfile) {
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print "ERROR: ssh public key not found on host at $pubkeyfile\n";
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exit 1;
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}
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open(FILE,$pubkeyfile) or die "ERROR: unable to open $pubkeyfile - $^E";
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my $key = <FILE>;
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close FILE;
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$cmdline =~ s/%/ /g;
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my $msg = "pubkey:" . $key . "\ncmdline:" . $cmdline;
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my $socket = IO::Socket::UNIX->new(Peer=>$sockfile,Type=>SOCK_STREAM)
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or die "ERROR: unable to connect to $sockfile - $^E\n";
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print $socket "$msg\r\n";
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close $socket;
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