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When using containerd + CNI network, the VM could not ping the Internet IPs #418
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addressed by #427 |
Here's all 3 cases for me just demonstrating with test-all.sh (click for source)#!/bin/bash
set -uo pipefail
ignite="sudo ./bin/ignite"
docker="docker"
ctr="sudo $(which ctr)"
vm_info() {
$ignite vm ls | grep "\\b${1}\\b"
}
vm_id() {
vm_info "${1}" | awk '{print $1}'
}
test_net() {
runtime="$1"
net_plugin="$2"
name="test_${runtime}_${net_plugin}"
echo
echo "${name} ..."
$ignite \
--runtime "${runtime}" \
--network-plugin "${net_plugin}" \
run weaveworks/ignite-ubuntu \
--name "${name}" \
--ssh
vm_info "${name}"
case "${runtime}" in
docker)
$docker inspect "ignite-$(vm_id "${name}")" | grep -E 'IPAddress|NetworkMode'
;;
esac
sleep 2
$ignite \
--runtime "${runtime}" \
--network-plugin "${net_plugin}" \
exec "${name}" curl google.com
$ignite \
--runtime "${runtime}" \
--network-plugin "${net_plugin}" \
vm rm -f "${name}"
}
test_net docker docker-bridge
test_net docker cni
test_net containerd cni ./test-all.sh
test_docker_docker-bridge ...
time="2019-09-11T05:55:26-06:00" level=info msg="Created VM with ID \"6e63f33a5a1e98ff\" and name \"test_docker_docker-bridge\""
time="2019-09-11T05:55:26-06:00" level=info msg="Networking is handled by \"docker-bridge\""
time="2019-09-11T05:55:26-06:00" level=info msg="Started Firecracker VM \"6e63f33a5a1e98ff\" in a container with ID \"4fec07c8b6cff4a26bd2fbf057476c5e8a9459297d6aa69a9c244f166918ab4e\""
6e63f33a5a1e98ff weaveworks/ignite-ubuntu:latest weaveworks/ignite-kernel:4.19.47 4.0 GB 1 512.0 MB 1s ago Up 1s 172.17.0.5 test_docker_docker-bridge
"NetworkMode": "default",
"SecondaryIPAddresses": null,
"IPAddress": "172.17.0.5",
"IPAddress": "172.17.0.5",
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
time="2019-09-11T05:55:29-06:00" level=info msg="Removing the container with ID \"ignite-6e63f33a5a1e98ff\" from the \"docker-bridge\" network"
time="2019-09-11T05:55:30-06:00" level=info msg="Removed VM with name \"test_docker_docker-bridge\" and ID \"6e63f33a5a1e98ff\""
test_docker_cni ...
time="2019-09-11T05:55:30-06:00" level=info msg="Created VM with ID \"20385f5e4d9af61c\" and name \"test_docker_cni\""
time="2019-09-11T05:55:31-06:00" level=info msg="Networking is handled by \"cni\""
time="2019-09-11T05:55:31-06:00" level=info msg="Started Firecracker VM \"20385f5e4d9af61c\" in a container with ID \"8a59397bd778d0f18a89c278a73a284386aa9a07ae8ee3498fa36d68c3ffaad7\""
20385f5e4d9af61c weaveworks/ignite-ubuntu:latest weaveworks/ignite-kernel:4.19.47 4.0 GB 1 512.0 MB 0s ago Up 0s 172.18.0.69 test_docker_cni
"NetworkMode": "none",
"SecondaryIPAddresses": null,
"IPAddress": "",
"IPAddress": "",
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
time="2019-09-11T05:55:34-06:00" level=info msg="Removing the container with ID \"ignite-20385f5e4d9af61c\" from the \"cni\" network"
time="2019-09-11T05:55:34-06:00" level=fatal msg="invalid CIDR address: !192.168.122.0/24%!(EXTRA string=could not parse destination)"
test_containerd_cni ...
time="2019-09-11T05:55:35-06:00" level=info msg="Created VM with ID \"cee7ad1345418fe7\" and name \"test_containerd_cni\""
time="2019-09-11T05:55:36-06:00" level=info msg="Networking is handled by \"cni\""
time="2019-09-11T05:55:36-06:00" level=info msg="Started Firecracker VM \"cee7ad1345418fe7\" in a container with ID \"ignite-cee7ad1345418fe7\""
cee7ad1345418fe7 weaveworks/ignite-ubuntu:latest weaveworks/ignite-kernel:4.19.47 4.0 GB 1 512.0 MB 0s ago Up 0s 172.18.0.70 test_containerd_cni
curl: (6) Could not resolve host: google.com
time="2019-09-11T05:55:39-06:00" level=fatal msg="Process exited with status 6"
time="2019-09-11T05:55:39-06:00" level=info msg="Removing the container with ID \"ignite-cee7ad1345418fe7\" from the \"cni\" network"
time="2019-09-11T05:55:39-06:00" level=fatal msg="invalid CIDR address: !192.168.122.0/24%!(EXTRA string=could not parse destination)" |
You're right. This issue should be saying only for |
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Labels
When using CNI network, the VM could not ping the Internet IPs.
This is because there is no forward setting in iptables to handle traffic atm.
We should implement this inside
pkg/network/cni
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