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OpenStack Icehouse : Configure Networking
2014/09/01 |
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Configure Networking for Virtual Machine Instances.
The follows is for the case you set legacy nova-network in the section [3].
But If you use Neutron Networking, it's unnecessarry to refer to here.
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| [1] | Create a network which instances use in OpenStack internal system. |
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# nova-manage network create --label (any name) --dns1 (DNS server) --fixed_range_v4=(internal range) [root@dlp ~(keystone)]# nova-manage network create --label network01 --dns1 10.0.0.10 --fixed_range_v4=10.1.0.0/24 [root@dlp ~(keystone)]# nova-manage network list id IPv4 IPv6 start address DNS1 DNS2 VlanID project uuid 1 10.1.0.0/24 None 10.1.0.2 10.0.0.10 None None None 4bea7c9b- |
| [2] | Change default security rules to access to instances with SSH. |
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# permit SSH [root@dlp ~(keystone)]# nova secgroup-add-rule default tcp 22 22 0.0.0.0/0 +-------------+-----------+---------+-----------+--------------+ | IP Protocol | From Port | To Port | IP Range | Source Group | +-------------+-----------+---------+-----------+--------------+ | tcp | 22 | 22 | 0.0.0.0/0 | | +-------------+-----------+---------+-----------+--------------+ # permit ICMP [root@dlp ~(keystone)]# nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0 +-------------+-----------+---------+-----------+--------------+ | IP Protocol | From Port | To Port | IP Range | Source Group | +-------------+-----------+---------+-----------+--------------+ | icmp | -1 | -1 | 0.0.0.0/0 | | +-------------+-----------+---------+-----------+--------------+[root@dlp ~(keystone)]# nova secgroup-list-rules default +-------------+-----------+---------+-----------+--------------+ | IP Protocol | From Port | To Port | IP Range | Source Group | +-------------+-----------+---------+-----------+--------------+ | tcp | 22 | 22 | 0.0.0.0/0 | | | icmp | -1 | -1 | 0.0.0.0/0 | | +-------------+-----------+---------+-----------+--------------+ |
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OpenStack Icehouse : Set Floating IP
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It's possible to access to Virtual machine Instance to set Floating IP address.
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| [3] | Change Nova's setting first to assign Floating IP address automatically. |
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[root@dlp ~(keystone)]#
vi /etc/nova/nova.conf # add follows in the [DEFAULT] section auto_assign_floating_ip=true
systemctl restart openstack-nova-network |
| [4] | Set Floating IP address. For exmaple, assign 10.0.0.248/29 for Floating IP addresses in internal network 10.0.0.0/24. |
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[root@dlp ~(keystone)]# nova-manage floating create --ip_range=10.0.0.248/29 [root@dlp ~(keystone)]# nova-manage floating list None 10.0.0.249 None nova eno16777736 None 10.0.0.250 None nova eno16777736 None 10.0.0.251 None nova eno16777736 None 10.0.0.252 None nova eno16777736 None 10.0.0.253 None nova eno16777736 None 10.0.0.254 None nova eno16777736 |
| [5] | Create a new instance and boot it, then Floating IP is assgined automatically like follows. In the example below, The "10.0.0.249" is just the Floating IP. |
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# create and boot Instance [root@dlp ~(keystone)]# nova boot --flavor 2 --image CentOS7 --security_group default CentOS_70_Pub [root@dlp ~(keystone)]# nova list +-----------+---------------+---------+------------+-------------+--------------------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+---------------+---------+------------+-------------+--------------------------------+ | d6a39b1f- | CentOS_70_Pub | ACTIVE | - | Running | network01=10.1.0.3, 10.0.0.249 | +-----------+---------------+---------+------------+-------------+--------------------------------+ |
| [6] | The Instances created before setting Floating IP, Floating IP does not assigned automatically, so it necessarry to set it manually like follows. |
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[root@dlp ~(keystone)]# nova list +-----------+-----------+---------+------------+-------------+--------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+-----------+---------+------------+-------------+--------------------+ | 29d99611- | CentOS_70 | SHUTOFF | - | Shutdown | network01=10.1.0.2 | +-----------+-----------+---------+------------+-------------+--------------------+ # assign "10.0.0.250" to "CentOS_70" [root@dlp ~(keystone)]# nova add-floating-ip CentOS_70 10.0.0.250 [root@dlp ~(keystone)]# nova list +-----------+-----------+---------+------------+-------------+--------------------------------+ | ID | Name | Status | Task State | Power State | Networks | +-----------+-----------+---------+------------+-------------+--------------------------------+ | 29d99611- | CentOS_70 | SHUTOFF | - | Shutdown | network01=10.1.0.2, 10.0.0.250 | +-----------+-----------+---------+------------+-------------+--------------------------------+ |