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Hi Erik,
I had the same issue. I think is because there aren't nss db files. You
could try executing the following commands:

1.- On network node add certutil command to rootwarp
2.1.- Root user
# echo "libreswan: CommandFilter, certutil, root" >>
/usr/share/neutron/rootwrap/vpnaas.filters
# systemctl restart neutron-vpn-agent

2.- On controller node create connection
# neutron ipsec-site-connection-create --vpnservice-id demo-vpn-vpnservice
--ikepolicy-id demo-vpn-ikepolicy --ipsecpolicy-id demo-vpn-ipsecpolicy
--peer-address YYY.YYY.YYY.YYY --peer-id YYY.YYY.YYY.YYY --peer-cidr
192.168.88.0/24 --psk motorolag --name demo-vpn-ipsecsiteconnection

3.- On network node like neutron user execute the following commands
# su - -s /bin/bash neutron
##Comment: Start new nss db
$ sudo /bin/neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec
qrouter-<uid> certutil -N -d /var/lib/neutron/ipsec/<uid>/etc/ipsec.d/
--empty-password
##Comment: Start ipsec process
$ sudo /bin/neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec
qrouter-<uid> ipsec pluto --ctlbase
/var/lib/neutron/ipsec/<uid>/var/run/pluto --ipsecdir
/var/lib/neutron/ipsec/<uid>/etc/ipsec.d --config
/var/lib/neutron/ipsec/<uid>/etc/ipsec.conf --uniqueids --nat_traversal
--secretsfile /var/lib/neutron/ipsec/<uid>/etc/ipsec.secrets
--virtual_private %v4:192.168.1.0/24,%v4:192.168.88.0/24
##Comment: Now, PID file should exist and you should see pluto state
$ ls /var/lib/neutron/ipsec/<uid>/var/run/
pluto  pluto.ctl  pluto.pid
$ sudo /bin/neutron-rootwrap /etc/neutron/rootwrap.conf ip netns exec
qrouter-<uid> ipsec whack --ctlbase
/var/lib/neutron/ipsec/<uid>/var/run/pluto --status


Matías R. Cuenca del Rey

On Wed, Feb 4, 2015 at 9:49 AM, Erik McCormick <emccormick at cirrusseven.com>
wrote:

> Matias,
>
> This is great stuff! Thanks for sharing. I came up with something similar
> this past weekend, but I then ran into the issue where the PID file was
> left behind whenever Pluto gets restarted (which happens constantly). Did
> you run into that issue?
>
> Thanks,
> Erik
> On Feb 3, 2015 11:37 PM, "Matias R. Cuenca del Rey" <maticue at gmail.com>
> wrote:
>
>> Packages:
>> * openstack-neutron-vpn-agent-2014.2.1-1.el7.centos.noarch
>> * libreswan-3.8-6.el7_0.x86_64
>>
>> Yesterday I modified some openstack-neutron-vpn-agent's script to make
>> VPN work :). I don't know much about python. I'm sure it can be improved.
>> These are all the steps I did to enable VPNaaS on Openstack Juno con Centos
>> 7 with libreswan
>>
>> 1.- Install necessary packages:
>> # yum install openstack-neutron-vpn-agent libreswan -y
>>
>> 2.- Enable vpnaas plugin in neutron
>> # cat /etc/neutron/neutron.conf
>> ...
>> service_plugins = router,vpnaas
>> ...
>>
>> service_provider=VPN:openswan:neutron.services.vpn.service_drivers.ipsec.IPsecVPNDriver:default
>> ...
>>
>> 3.- Configure vpn plugin
>> # cat /etc/neutron/vpn_agent.ini
>>
>> [DEFAULT]
>> # VPN-Agent configuration file
>> # Note vpn-agent inherits l3-agent, so you can use configs on l3-agent
>> also
>> ##interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
>>
>> [vpnagent]
>> # vpn device drivers which vpn agent will use
>> # If we want to use multiple drivers,  we need to define this option
>> multiple times.
>> vpn_device_driver=neutron.services.vpn.device_drivers.ipsec.OpenSwanDriver
>> #
>> vpn_device_driver=neutron.services.vpn.device_drivers.cisco_ipsec.CiscoCsrIPsecDriver
>> # vpn_device_driver=another_driver
>>
>> [ipsec]
>> # Status check interval
>> ipsec_status_check_interval=30
>>
>>
>> 4.- Here we start with the dirty part :)
>> 4.1.- Add certutil command to vpnaas.filters, so it could be execute on
>> neutron rootwarps
>> # cat /usr/share/neutron/rootwrap/vpnaas.filters
>> # neutron-rootwrap command filters for nodes on which neutron is
>> # expected to control network
>> #
>> # This file should be owned by (and only-writeable by) the root user
>>
>> # format seems to be
>> # cmd-name: filter-name, raw-command, user, args
>>
>> [Filters]
>>
>> ip: IpFilter, ip, root
>> ip_exec: IpNetnsExecFilter, ip, root
>> openswan: CommandFilter, ipsec, root
>> libreswan: CommandFilter, certutil, root
>>
>> 4.2.- Edit ipsec.py, which execute 'ipsec and (now) certutils' commands
>> 4.2.1.- If nss db does not exist, it is created on
>> /var/lib/neutron/ipsec/<uuid>/etc/ipsec.d
>> 4.2.2.- In 'ipsec pluto' execution:
>> 4.2.2.1.- Remove '--config' option, keep ctlbase (Thanks Paul!)
>> 4.2.2.2.- Change argument of '--ipsecdir' from
>> /var/lib/neutron/ipsec/<uuid>/etc/ to
>> /var/lib/neutron/ipsec/<uuid>/etc/ipsec.d
>> 4.2.2.3.- Remove --use-netkey because it is the default option
>> 4.2.3.- In 'ipsec addconn' execution:
>> 4.2.3.1.- Remove  '--defaultroutenexthop' because it is obsolete
>> The diff between original and modified file is:
>>
>> # diff
>>  /usr/lib/python2.7/site-packages/neutron/services/vpn/device_drivers/ipsec.py
>> /usr/lib/python2.7/site-packages/neutron/services/vpn/device_drivers/ipsec.py.original
>> 97d96
>> <     bcertutil = "certutil"
>> 114,119d112
>> <     NSS_FILES = [
>> <         'cert8.db',
>> <         'key3.db',
>> <         'secmod.db'
>> <     ]
>> <
>> 189,197d181
>> <     def _ensure_nss(self, nss_files):
>> <         if not os.path.isfile(nss_files):
>> <             #start nss database
>> <             self._execute([self.bcertutil,
>> <                        '-N',
>> <                        '--empty-password',
>> <                        '-d', self.ipsecd_dir,
>> <                        ])
>> <
>> 199c183
>> <         """Create config directory and nss files if they does not
>> exist."""
>> ---
>> >         """Create config directory if it does not exist."""
>> 204,206d187
>> <         for nss_file in self.NSS_FILES:
>> <             nss_path = os.path.join(self.ipsecd_dir, nss_file)
>> <             self._ensure_nss(nss_path)
>> 327,328d307
>> <         self.ipsecd_dir = os.path.join(
>> <             self.etc_dir, 'ipsec.d')
>> 401c380,381
>> <                        '--ipsecdir', self.ipsecd_dir,
>> ---
>> >                        '--ipsecdir', self.etc_dir,
>> >                        '--use-netkey',
>> 412a393
>> >                            '--defaultroutenexthop', nexthop,
>>
>> 4.3.- Edit ipsec.conf.template, which is used to generate
>> /var/lib/neutron/ipsec/<uid>/ipsec.conf (necessary for ipsec addconn
>> command)
>> Just comment obsolete options. The diff between original and modified
>> file is:
>>
>> # diff
>> /usr/lib/python2.7/site-packages/neutron/services/vpn/device_drivers/template/openswan/ipsec.conf.template
>> /usr/lib/python2.7/site-packages/neutron/services/vpn/device_drivers/template/openswan/ipsec.conf.template.original
>> 3c3
>> <     # nat_traversal=yes
>> ---
>> >     nat_traversal=yes
>> 7,8c7
>> <     # keylife=60m
>> <     salifetime=60m
>> ---
>> >     keylife=60m
>> 20c19
>> <     # leftnexthop=%defaultroute
>> ---
>> >     leftnexthop=%defaultroute
>> 31c30
>> <     # rightnexthop=%defaultroute
>> ---
>> >     rightnexthop=%defaultroute
>> 63,64c62
>> <     # lifetime={{ipsec_site_connection.ipsecpolicy.lifetime_value}}s
>> <     salifetime={{ipsec_site_connection.ipsecpolicy.lifetime_value}}s
>> ---
>> >     lifetime={{ipsec_site_connection.ipsecpolicy.lifetime_value}}s
>>
>> 5.- Enable and start von-agent
>> # systemctl enable neutron-vpn-agent
>> # systemctl start neutron-vpn-agent
>>
>>
>> Hope it could be useful to someone.
>>
>> Matías R. Cuenca del Rey
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>>
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