Setup OpenStack with Virtuozzo 7

<translate> This howto describes steps by step installation of OpenStack devstack with Virtuozzo 7.

Execute the following commands within you Virtuozzo 7 host as root:

Install RDO repo:

$ yum install -y https://rdoproject.org/repos/rdo-release.rpm

Install EPEL repo:

$ yum install -y http://fedora-mirror01.rbc.ru/pub/epel//epel-release-latest-7.noarch.rpm

Install required packages:

$ yum install -y git patch redhat-lsb-core euca2ools mysql-connector-python scsi-target-utils

Reinstall http and mod_wsgi:

$ yum remove -y httpd httpd-tools mod_wsgi

$ yum install -y httpd

Enable IP connection tracking for CT0:

$ echo -ne "options nf_conntrack ip_conntrack_disable_ve0=0\n" > /etc/modprobe.d/vz.conf

$ echo -ne "options nf_conntrack ip_conntrack_disable_ve0=0\n" > /etc/modprobe.d/parallels.conf

Then reboot your system:

$ reboot

Create user "stack" and add him to sudoers:

$ adduser stack -d /vz/stack

$ chmod 755 /vz/stack
$ echo "stack ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers

Download and unpack container image:

$ su stack -c "cd ~ && wget http://updates.virtuozzo.com/server/virtuozzo/en_us/odin/7/techpreview-ct/centos7-exe.hds.tar.gz"

$ su stack -c "cd ~ && tar -xzvf centos7-exe.hds.tar.gz"

Clone devstack:

$ su stack -c "cd ~ && git clone git://git.openstack.org/openstack-dev/devstack"

As soon as we switched to a new linux distribution, which is not supported in upstream devstack yet, apply the following patch:

diff --git a/functions-common b/functions-common
index 47276f0..c0cdd3b 100644
--- a/functions-common
+++ b/functions-common
@@ -338,8 +338,9 @@ function GetOSVersion {
         # XenServer release 6.2.0-70446c (xenenterprise)
         # Oracle Linux release 7
         # CloudLinux release 7.1
+        # VirtuozzoLinux release 7.0
         os_CODENAME=""
-        for r in "Red Hat" CentOS Fedora XenServer CloudLinux; do
+        for r in "Red Hat" CentOS Fedora XenServer CloudLinux VirtuozzoLinux; do
             os_VENDOR=$r
             if [[ -n "`grep \"$r\" /etc/redhat-release`" ]]; then
                 ver=`sed -e 's/^.* \([0-9].*\) (\(.*\)).*$/\1\|\2/' /etc/redhat-release`
@@ -446,7 +447,8 @@ function is_fedora {

     [ "$os_VENDOR" = "Fedora" ] || [ "$os_VENDOR" = "Red Hat" ] || \
         [ "$os_VENDOR" = "CentOS" ] || [ "$os_VENDOR" = "OracleLinux" ] || \
-        [ "$os_VENDOR" = "CloudLinux" ] || [ "$os_VENDOR" = "kvmibm" ]
+        [ "$os_VENDOR" = "CloudLinux" ] || [ "$os_VENDOR" = "kvmibm" ] ||
+        [ "$os_VENDOR" = "VirtuozzoLinux" ]
 }

Create local.conf file:

$ cat > ~stack/devstack/local.conf << _EOF

[[local|localrc]]
FORCE=yes
HOST_IP=1.1.1.1
MYSQL_PASSWORD=password
SERVICE_TOKEN=password
SERVICE_PASSWORD=password
ADMIN_PASSWORD=password
LIBVIRT_TYPE=parallels
RABBIT_PASSWORD=password
#Basic services
ENABLED_SERVICES=key,rabbit,mysql,horizon
# Enable Nova services
ENABLED_SERVICES+=,n-api,n-crt,n-cpu,n-cond,n-sch,n-novnc,n-cauth
# Enable Glance services
ENABLED_SERVICES+=,g-api,g-reg
# Enable Cinder services
#ENABLED_SERVICES+=,c-sch,c-api,c-vol
# Enable Heat, to test orchestration
#ENABLED_SERVICES+=,heat,h-api,h-api-cfn,h-api-cw,h-eng
# Enable Neutron services
ENABLED_SERVICES+=,q-svc,q-agt,q-dhcp,q-l3,q-meta,neutron
# Destination path for installation
DEST=/vz/stack
# Destination for working data
DATA_DIR=/vz/stack/data
# Destination for status files
SERVICE_DIR=/vz/stack/status
LOG_COLOR=False
LOGDAYS=3
LOGFILE=/vz/stack/logs/stack.sh.log
SCREEN_LOGDIR=/vz/stack/logs/screen
ENABLE_METADATA_NETWORK=True
ENABLE_ISOLATED_METADATA=True
IMAGE_URLS="file:///vz/stack/centos7-exe.hds"
_EOF

Change HOST_IP within created ~stack/devstack/local.conf to a valid IP address of your Virtuozzo 7 host. Change password for OpenStack services to whatever you prefer in ~stack/devstack/local.conf. Make libvirt daemon accessible via socket for stack user:

$ sed -i s/"#unix_sock_group = \"libvirt\""/"unix_sock_group = \"stack\""/ /etc/libvirt/libvirtd.conf

$ sed -i s/"#unix_sock_ro_perms = \"0777\""/"unix_sock_ro_perms = \"0777\""/ /etc/libvirt/libvirtd.conf
$ sed -i s/"#unix_sock_rw_perms = \"0770\""/"unix_sock_rw_perms = \"0770\""/ /etc/libvirt/libvirtd.conf
$ sed -i s/"#unix_sock_dir = \"\/var\/run\/libvirt\""/"unix_sock_dir = \"\/var\/run\/libvirt\""/ /etc/libvirt/libvirtd.conf
$ sed -i s/"#auth_unix_ro = \"none\""/"auth_unix_ro = \"none\""/ /etc/libvirt/libvirtd.conf
$ sed -i s/"#auth_unix_rw = \"none\""/"auth_unix_rw = \"none\""/ /etc/libvirt/libvirtd.conf

Define the following function:

function apply_cherry_pick {
       local git_remote=$1
       local dest_dir=$2
       local cherry_pick_refs=$3
       pushd .
       cd $dest_dir
       # modify current source
       for ref in ${cherry_pick_refs//,/ }; do
               echo "Applying $ref from $git_remote ..."
               git fetch $git_remote $ref
               git cherry-pick FETCH_HEAD
               echo "Applying $ref from $git_remote ... done"
       done
       popd
}

Clone nova repository and apply pending changes:

$ su stack
$ cd ~
$ source ~stack/devstack/functions
$ NOVA_CHERRY_PICK_REFS=refs/changes/57/182257/36,refs/changes/79/217679/12,refs/changes/36/260636/4,refs/changes/14/214314/3
$ git_clone https://github.com/openstack/nova.git ~stack/nova master
$ apply_cherry_pick https://review.openstack.org/openstack/nova ~stack/nova $NOVA_CHERRY_PICK_REFS

Start devstack:

$ su stack -c "~/devstack/stack.sh"

After script finishes, setup your iptables rules to allow incoming http trafic if you want to use OpenStack dashboard. For instance:

$ iptables -D INPUT -j REJECT --reject-with icmp-host-prohibited

$ iptables -A INPUT -p tcp --dport http -j ACCEPT
$ iptables -A INPUT -j REJECT --reject-with icmp-host-prohibited

Here you are! </translate>