Differences
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sred:setup_lab_openstack [2024/11/29 14:49] horia.stoenescu Added page for openstack setup |
sred:setup_lab_openstack [2024/12/03 19:53] (current) horia.stoenescu Added workaround for network connection |
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| + | 6. (update) For connecting nodes to Internet, you cannot use Management/Cloud0/pnet0, as we require special permissions (enabling Promiscuous mode, forged arp packets, and mac address changes), and instead use a workaround to trick it by using Cloud1 (from here: https://www.youtube.com/watch?v=7CJR2l8VXM0&ab_channel=NetworkCollective). | ||
| + | |||
| + | Steps: | ||
| + | |||
| + | A. Configure interface //pnet1// from **/etc/network/interfaces** as follows: | ||
| + | <code> | ||
| + | iface eth1 inet manual | ||
| + | auto pnet1 | ||
| + | iface pnet1 inet static | ||
| + | bridge_ports eth1 | ||
| + | bridge_stp off | ||
| + | address 10.199.199.1 | ||
| + | netmask 255.255.255.0 | ||
| + | </code> | ||
| + | |||
| + | Then, restart networking service: | ||
| + | <code> | ||
| + | systemctl restart networking.service | ||
| + | </code> | ||
| + | |||
| + | B. Enable ip forwarding by commenting from **/etc/sysctl.conf**: | ||
| + | <code> | ||
| + | # from sysctl.conf | ||
| + | net.ip4.ip_forward=1 | ||
| + | # then | ||
| + | sysctl -p /etc/sysctl.conf | ||
| + | </code> | ||
| + | |||
| + | C. At last, add a rule for forwarding all packets via nat to pnet0 and make this configuration persistent: | ||
| + | <code> | ||
| + | iptables -t nat -A POSTROUTING -s 10.199.199.0/24 -o pnet0 -j MASQUERADE | ||
| + | # install iptables-persistent | ||
| + | apt-get install -y iptables-persistent | ||
| + | # after a reboot, configuration should remain for nat chain | ||
| + | </code> | ||
