diff options
| -rw-r--r-- | manifests/profile/base/nova.pp | 159 | ||||
| -rw-r--r-- | releasenotes/notes/cold_migration_security-1543136408c76459.yaml | 10 | ||||
| -rw-r--r-- | spec/classes/tripleo_profile_base_nova_spec.rb | 169 | ||||
| -rw-r--r-- | spec/fixtures/hieradata/default.yaml | 1 |
4 files changed, 271 insertions, 68 deletions
diff --git a/manifests/profile/base/nova.pp b/manifests/profile/base/nova.pp index ab9b615..65355d4 100644 --- a/manifests/profile/base/nova.pp +++ b/manifests/profile/base/nova.pp @@ -87,29 +87,35 @@ # Expects a hash with keys 'private_key' and 'public_key'. # Defaults to {} # +# [*migration_ssh_localaddrs*] +# (Optional) Restrict ssh migration to clients connecting via this list of +# IPs. +# Defaults to [] (no restriction) +# # [*libvirt_tls*] # (Optional) Whether or not libvird TLS service is enabled. # Defaults to false class tripleo::profile::base::nova ( - $bootstrap_node = hiera('bootstrap_nodeid', undef), - $libvirt_enabled = false, - $manage_migration = false, - $oslomsg_rpc_proto = hiera('messaging_rpc_service_name', 'rabbit'), - $oslomsg_rpc_hosts = any2array(hiera('rabbitmq_node_names', undef)), - $oslomsg_rpc_password = hiera('nova::rabbit_password'), - $oslomsg_rpc_port = hiera('nova::rabbit_port', '5672'), - $oslomsg_rpc_username = hiera('nova::rabbit_userid', 'guest'), - $oslomsg_notify_proto = hiera('messaging_notify_service_name', 'rabbit'), - $oslomsg_notify_hosts = any2array(hiera('rabbitmq_node_names', undef)), - $oslomsg_notify_password = hiera('nova::rabbit_password'), - $oslomsg_notify_port = hiera('nova::rabbit_port', '5672'), - $oslomsg_notify_username = hiera('nova::rabbit_userid', 'guest'), - $oslomsg_use_ssl = hiera('nova::rabbit_use_ssl', '0'), - $nova_compute_enabled = false, - $step = hiera('step'), - $migration_ssh_key = {}, - $libvirt_tls = false + $bootstrap_node = hiera('bootstrap_nodeid', undef), + $libvirt_enabled = false, + $manage_migration = false, + $oslomsg_rpc_proto = hiera('messaging_rpc_service_name', 'rabbit'), + $oslomsg_rpc_hosts = any2array(hiera('rabbitmq_node_names', undef)), + $oslomsg_rpc_password = hiera('nova::rabbit_password'), + $oslomsg_rpc_port = hiera('nova::rabbit_port', '5672'), + $oslomsg_rpc_username = hiera('nova::rabbit_userid', 'guest'), + $oslomsg_notify_proto = hiera('messaging_notify_service_name', 'rabbit'), + $oslomsg_notify_hosts = any2array(hiera('rabbitmq_node_names', undef)), + $oslomsg_notify_password = hiera('nova::rabbit_password'), + $oslomsg_notify_port = hiera('nova::rabbit_port', '5672'), + $oslomsg_notify_username = hiera('nova::rabbit_userid', 'guest'), + $oslomsg_use_ssl = hiera('nova::rabbit_use_ssl', '0'), + $nova_compute_enabled = false, + $step = hiera('step'), + $migration_ssh_key = {}, + $migration_ssh_localaddrs = [], + $libvirt_tls = false ) { if $::hostname == downcase($bootstrap_node) { $sync_db = true @@ -131,10 +137,29 @@ class tripleo::profile::base::nova ( backend => 'oslo_cache.memcache_pool', memcache_servers => $memcache_servers, } + class { '::nova': + default_transport_url => os_transport_url({ + 'transport' => $oslomsg_rpc_proto, + 'hosts' => $oslomsg_rpc_hosts, + 'port' => $oslomsg_rpc_port, + 'username' => $oslomsg_rpc_username, + 'password' => $oslomsg_rpc_password, + 'ssl' => $oslomsg_use_ssl_real, + }), + notification_transport_url => os_transport_url({ + 'transport' => $oslomsg_notify_proto, + 'hosts' => $oslomsg_notify_hosts, + 'port' => $oslomsg_notify_port, + 'username' => $oslomsg_notify_username, + 'password' => $oslomsg_notify_password, + 'ssl' => $oslomsg_use_ssl_real, + }), + } include ::nova::placement + } - if $step >= 4 and $manage_migration { - + if $step >= 4 { + if $manage_migration { # Libvirt setup (live-migration) if $libvirt_tls { class { '::nova::migration::libvirt': @@ -148,57 +173,75 @@ class tripleo::profile::base::nova ( transport => 'ssh', configure_libvirt => $libvirt_enabled, configure_nova => $nova_compute_enabled, - client_user => 'nova', - client_extraparams => {'keyfile' => '/var/lib/nova/.ssh/id_rsa'} + client_user => 'nova_migration', + client_extraparams => {'keyfile' => '/etc/nova/migration/identity'} } } - if $migration_ssh_key != {} { + $services_enabled = hiera('service_names', []) + if !empty($migration_ssh_key) and 'sshd' in $services_enabled { # Nova SSH tunnel setup (cold-migration) - #TODO: Remove me when https://review.rdoproject.org/r/#/c/4008 lands - user { 'nova': - ensure => present, - shell => '/bin/bash', + # Server side + if !empty($migration_ssh_localaddrs) { + $allow_type = sprintf('LocalAddress %s User', join($migration_ssh_localaddrs,',')) + $deny_type = 'LocalAddress' + $deny_name = sprintf('!%s', join($migration_ssh_localaddrs,',!')) + + ssh::server::match_block { 'nova_migration deny': + name => $deny_name, + type => $deny_type, + order => 2, + options => { + 'DenyUsers' => 'nova_migration' + }, + notify => Service['sshd'] + } + } + else { + $allow_type = 'User' + } + $allow_name = 'nova_migration' + + ssh::server::match_block { 'nova_migration allow': + name => $allow_name, + type => $allow_type, + order => 1, + options => { + 'ForceCommand' => '/bin/nova-migration-wrapper', + 'PasswordAuthentication' => 'no', + 'AllowTcpForwarding' => 'no', + 'X11Forwarding' => 'no', + 'AuthorizedKeysFile' => '/etc/nova/migration/authorized_keys' + }, + notify => Service['sshd'] } - $private_key_parts = split($migration_ssh_key['public_key'], ' ') - $nova_public_key = { - type => $private_key_parts[0], - key => $private_key_parts[1] + file { '/etc/nova/migration/authorized_keys': + content => $migration_ssh_key['public_key'], + mode => '0640', + owner => 'root', + group => 'nova_migration', + require => Package['openstack-nova-migration'], } - $nova_private_key = { - type => $private_key_parts[0], - key => $migration_ssh_key['private_key'] + + # Client side + file { '/etc/nova/migration/identity': + content => $migration_ssh_key['private_key'], + mode => '0600', + owner => 'nova', + group => 'nova', + require => Package['openstack-nova-migration'], } + $migration_pkg_ensure = installed } else { - $nova_public_key = undef - $nova_private_key = undef + $migration_pkg_ensure = absent } } else { - $nova_public_key = undef - $nova_private_key = undef + $migration_pkg_ensure = absent } - - class { '::nova': - default_transport_url => os_transport_url({ - 'transport' => $oslomsg_rpc_proto, - 'hosts' => $oslomsg_rpc_hosts, - 'port' => $oslomsg_rpc_port, - 'username' => $oslomsg_rpc_username, - 'password' => $oslomsg_rpc_password, - 'ssl' => $oslomsg_use_ssl_real, - }), - notification_transport_url => os_transport_url({ - 'transport' => $oslomsg_notify_proto, - 'hosts' => $oslomsg_notify_hosts, - 'port' => $oslomsg_notify_port, - 'username' => $oslomsg_notify_username, - 'password' => $oslomsg_notify_password, - 'ssl' => $oslomsg_use_ssl_real, - }), - nova_public_key => $nova_public_key, - nova_private_key => $nova_private_key, + package {'openstack-nova-migration': + ensure => $migration_pkg_ensure } } } diff --git a/releasenotes/notes/cold_migration_security-1543136408c76459.yaml b/releasenotes/notes/cold_migration_security-1543136408c76459.yaml new file mode 100644 index 0000000..aaea57e --- /dev/null +++ b/releasenotes/notes/cold_migration_security-1543136408c76459.yaml @@ -0,0 +1,10 @@ +--- +features: + - | + Restrict nova migration ssh tunnel + * The ssh authorized_keys file is only writeable by root. + * Creates a new user for migration instead of using root/nova. + * Disables SSH forwarding for this user. + * Restricts the networks that this user can connect from. + * Uses an ssh wrapper command to whitelist the commands that this user can run over ssh. + Adds new parameter "tripleo::profile::base::nova::migration_ssh_localaddrs" to specify which incoming IPs are allow for SSH tunnel connections. diff --git a/spec/classes/tripleo_profile_base_nova_spec.rb b/spec/classes/tripleo_profile_base_nova_spec.rb index 8f7bfdc..d77ba1b 100644 --- a/spec/classes/tripleo_profile_base_nova_spec.rb +++ b/spec/classes/tripleo_profile_base_nova_spec.rb @@ -95,6 +95,9 @@ describe 'tripleo::profile::base::nova' do is_expected.to contain_class('nova::cache') is_expected.to contain_class('nova::placement') is_expected.to_not contain_class('nova::migration::libvirt') + is_expected.to contain_package('openstack-nova-migration').with( + :ensure => 'absent' + ) } end @@ -128,6 +131,9 @@ describe 'tripleo::profile::base::nova' do :configure_libvirt => params[:libvirt_enabled], :configure_nova => params[:nova_compute_enabled] ) + is_expected.to contain_package('openstack-nova-migration').with( + :ensure => 'absent' + ) } end @@ -162,13 +168,22 @@ describe 'tripleo::profile::base::nova' do :configure_libvirt => params[:libvirt_enabled], :configure_nova => params[:nova_compute_enabled], ) + is_expected.to contain_package('openstack-nova-migration').with( + :ensure => 'absent' + ) } end context 'with step 4 with libvirt and migration ssh key' do - let(:pre_condition) { - 'include ::nova::compute::libvirt::services' - } + let(:pre_condition) do + <<-eof + include ::nova::compute::libvirt::services + class { '::ssh::server': + storeconfigs_enabled => false, + options => {} + } + eof + end let(:params) { { :step => 4, :libvirt_enabled => true, @@ -185,8 +200,8 @@ describe 'tripleo::profile::base::nova' do is_expected.to contain_class('nova').with( :default_transport_url => /.+/, :notification_transport_url => /.+/, - :nova_public_key => {'key' => 'bar', 'type' => 'ssh-rsa'}, - :nova_private_key => {'key' => 'foo', 'type' => 'ssh-rsa'} + :nova_public_key => nil, + :nova_private_key => nil, ) is_expected.to contain_class('nova::config') is_expected.to contain_class('nova::placement') @@ -196,13 +211,120 @@ describe 'tripleo::profile::base::nova' do :configure_libvirt => params[:libvirt_enabled], :configure_nova => params[:nova_compute_enabled] ) + is_expected.to contain_ssh__server__match_block('nova_migration allow').with( + :type => 'User', + :name => 'nova_migration', + :options => { + 'ForceCommand' => '/bin/nova-migration-wrapper', + 'PasswordAuthentication' => 'no', + 'AllowTcpForwarding' => 'no', + 'X11Forwarding' => 'no', + 'AuthorizedKeysFile' => '/etc/nova/migration/authorized_keys' + } + ) + is_expected.to_not contain_ssh__server__match_block('nova_migration deny') + is_expected.to contain_file('/etc/nova/migration/authorized_keys').with( + :content => 'ssh-rsa bar', + :mode => '0640', + :owner => 'root', + :group => 'nova_migration', + ) + is_expected.to contain_file('/etc/nova/migration/identity').with( + :content => 'foo', + :mode => '0600', + :owner => 'nova', + :group => 'nova', + ) + is_expected.to contain_package('openstack-nova-migration').with( + :ensure => 'installed' + ) } end - context 'with step 4 with libvirt TLS and migration ssh key' do - let(:pre_condition) { - 'include ::nova::compute::libvirt::services' + context 'with step 4 with libvirt and migration ssh key and migration_ssh_localaddrs' do + let(:pre_condition) do + <<-eof + include ::nova::compute::libvirt::services + class { '::ssh::server': + storeconfigs_enabled => false, + options => {} + } + eof + end + let(:params) { { + :step => 4, + :libvirt_enabled => true, + :manage_migration => true, + :nova_compute_enabled => true, + :bootstrap_node => 'node.example.com', + :oslomsg_rpc_hosts => [ 'localhost' ], + :oslomsg_rpc_password => 'foo', + :migration_ssh_key => { 'private_key' => 'foo', 'public_key' => 'ssh-rsa bar'}, + :migration_ssh_localaddrs => ['127.0.0.1', '127.0.0.2'] + } } + + it { + is_expected.to contain_class('tripleo::profile::base::nova') + is_expected.to contain_class('nova').with( + :default_transport_url => /.+/, + :notification_transport_url => /.+/, + :nova_public_key => nil, + :nova_private_key => nil, + ) + is_expected.to contain_class('nova::config') + is_expected.to contain_class('nova::placement') + is_expected.to contain_class('nova::cache') + is_expected.to contain_class('nova::migration::libvirt').with( + :transport => 'ssh', + :configure_libvirt => params[:libvirt_enabled], + :configure_nova => params[:nova_compute_enabled] + ) + is_expected.to contain_ssh__server__match_block('nova_migration allow').with( + :type => 'LocalAddress 127.0.0.1,127.0.0.2 User', + :name => 'nova_migration', + :options => { + 'ForceCommand' => '/bin/nova-migration-wrapper', + 'PasswordAuthentication' => 'no', + 'AllowTcpForwarding' => 'no', + 'X11Forwarding' => 'no', + 'AuthorizedKeysFile' => '/etc/nova/migration/authorized_keys' + } + ) + is_expected.to contain_ssh__server__match_block('nova_migration deny').with( + :type => 'LocalAddress', + :name => '!127.0.0.1,!127.0.0.2', + :options => { + 'DenyUsers' => 'nova_migration' + } + ) + is_expected.to contain_file('/etc/nova/migration/authorized_keys').with( + :content => 'ssh-rsa bar', + :mode => '0640', + :owner => 'root', + :group => 'nova_migration', + ) + is_expected.to contain_file('/etc/nova/migration/identity').with( + :content => 'foo', + :mode => '0600', + :owner => 'nova', + :group => 'nova', + ) + is_expected.to contain_package('openstack-nova-migration').with( + :ensure => 'installed' + ) } + end + + context 'with step 4 with libvirt TLS and migration ssh key' do + let(:pre_condition) do + <<-eof + include ::nova::compute::libvirt::services + class { '::ssh::server': + storeconfigs_enabled => false, + options => {} + } + eof + end let(:params) { { :step => 4, :libvirt_enabled => true, @@ -220,8 +342,8 @@ describe 'tripleo::profile::base::nova' do is_expected.to contain_class('nova').with( :default_transport_url => /.+/, :notification_transport_url => /.+/, - :nova_public_key => {'key' => 'bar', 'type' => 'ssh-rsa'}, - :nova_private_key => {'key' => 'foo', 'type' => 'ssh-rsa'} + :nova_public_key => nil, + :nova_private_key => nil, ) is_expected.to contain_class('nova::config') is_expected.to contain_class('nova::placement') @@ -231,6 +353,33 @@ describe 'tripleo::profile::base::nova' do :configure_libvirt => params[:libvirt_enabled], :configure_nova => params[:nova_compute_enabled] ) + is_expected.to contain_ssh__server__match_block('nova_migration allow').with( + :type => 'User', + :name => 'nova_migration', + :options => { + 'ForceCommand' => '/bin/nova-migration-wrapper', + 'PasswordAuthentication' => 'no', + 'AllowTcpForwarding' => 'no', + 'X11Forwarding' => 'no', + 'AuthorizedKeysFile' => '/etc/nova/migration/authorized_keys' + } + ) + is_expected.to_not contain_ssh__server__match_block('nova_migration deny') + is_expected.to contain_file('/etc/nova/migration/authorized_keys').with( + :content => 'ssh-rsa bar', + :mode => '0640', + :owner => 'root', + :group => 'nova_migration', + ) + is_expected.to contain_file('/etc/nova/migration/identity').with( + :content => 'foo', + :mode => '0600', + :owner => 'nova', + :group => 'nova', + ) + is_expected.to contain_package('openstack-nova-migration').with( + :ensure => 'installed' + ) } end diff --git a/spec/fixtures/hieradata/default.yaml b/spec/fixtures/hieradata/default.yaml index 873a49e..3cf2693 100644 --- a/spec/fixtures/hieradata/default.yaml +++ b/spec/fixtures/hieradata/default.yaml @@ -44,3 +44,4 @@ memcached_node_ips: # octavia related items octavia::rabbit_password: 'password' horizon::secret_key: 'secrete' +service_names: ['sshd'] |