** Description changed: + === Begin SRU Template === + [Impact] + On Openstack instances, cloud-init incorrectly rendered netplan + configuration files. The result is that networking does not work + as expected. + + Note that this is not a default configuration on any Ubuntu provided images. + Default images use ifupdown (eni) rendering which did not have this issue. + + [Test Case] + The basic idea below is: + a.) launch an instance with proposed version of cloud-init. + b.) inside instance, get cloud-init's network rendering tool from trunk + c.) run the rendering tool against a config that failed before. + d.) check rendered netplan config to verify it has the correct format. + The failed output would have 'addresses' with a format like: + 172.19.1.34/255.255.255.0 + The expected output would be 'cidr' format: + 172.19.1.34/24 + + ## launch an instance. + $ release=xenial + $ ref=$release-proposed + $ lxc-proposed-snapshot --proposed --publish $release $ref + $ lxc init $ref $name + + ## get render tool + $ wget https://git.launchpad.net/~cloud-init-dev/cloud-init/plain/tools/net-convert.py -O net-convert.py + + ## write the network_data.json + $ cat >network_data.json <<EOF + { + "links": [ + {"ethernet_mac_address": "aa:ab:ac:ad:ae:00", + "id": "tap1a", "type": "phy", "vif_id": "1a81968a"} + ], + "networks": [ + {"id": "network0", "ip_address": "172.19.1.34", "link": "tap1a", + "netmask": "255.255.255.0", "network_id": "dacd568d", "type": "ipv4", + "routes": [ + {"gateway": "172.19.3.254", "netmask": "0.0.0.0", + "network": "0.0.0.0"}]} + ], + "services": [{"address": "172.19.0.12", "type": "dns"}] + } + EOF + + ## run the converter + $ ./net-convert.py --network-data=network_data.json \ + --kind=network_data.json --output-kind=netplan \ + -m eth1,aa:ab:ac:ad:ae:00 --directory=./out.d + + + ## check the output + $ cat out.d/etc/netplan/50-cloud-init.yaml + network: + version: 2 + ethernets: + eth1: + addresses: + - 172.19.1.34/24 + match: + macaddress: aa:ab:ac:ad:ae:00 + nameservers: + addresses: + - 172.19.0.12 + routes: + - to: 0.0.0.0/0 + via: 172.19.3.254 + set-name: eth1 + + ## show the cloud-init versions + $ dpkg-query --show cloud-init + ... + + [Regression Potential] + The change is fairly safe in that it basically renders: + 172.19.1.34/24 + instead of + 172.19.1.34/255.255.255.0 + + The previous rendering just plain did not work as it is not valid + input for netplan. So the regression path there should be low. + + The common code changes could shake out other failures in the networking + path. + + [Other Info] + Upstream commit at + https://git.launchpad.net/cloud-init/commit/?id=16a7302f6a + + lxc-proposed-snapshot is + https://git.launchpad.net/~smoser/cloud-init/+git/sru-info/tree/bin/lxc-proposed-snapshot + It publishes an image to lxd with proposed enabled and cloud-init upgraded. + === End SRU Template === + + networking data josn has: "ip_address" : "104.130.20.155", "netmask" : "255.255.255.0" "ip_address" : "10.184.3.234", "netmask" : "255.255.240.0", that got rendered into nplan as: - - 104.130.20.155/255.255.255.0 - - 10.184.3.234/255.255.240.0 + - 104.130.20.155/255.255.255.0 + - 10.184.3.234/255.255.240.0 which it failed to parse Stderr: Error in network definition //etc/netplan/50-cloud-init.yaml line 32 column 12: invalid prefix length in address '104.130.20.155/255.255.255.0' - - I believe nplan is expecing CIDR notation of /24 or some such. I belive the current plan is to fix cloud-init to generate /24 cidr notation in the nplan renderer. + I believe nplan is expecing CIDR notation of /24 or some such. I belive + the current plan is to fix cloud-init to generate /24 cidr notation in + the nplan renderer. This needs SRU into xenial.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1689346 Title: cloud-init and nplan do not parse and use OpenStack networking correctly with netmask To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1689346/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
