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# debug plugin
## Overview
This plugin aims to help debugging or troubleshooting in CNI plugin development.
## Example Configuration
```
{
"cniVersion": "0.3.1",
"name": "mynet",
"plugins": [
{
"type": "ptp",
"ipMasq": true,
"ipam": {
"type": "host-local",
"subnet": "172.16.30.0/24",
"routes": [
{
"dst": "0.0.0.0/0"
}
]
}
},
{
"type": "debug",
"cniOutput": "/tmp/cni_output.txt",
"addHooks": [
[ "sh", "-c", "ip link set $CNI_IFNAME promisc on" ]
]
},
{
"type": "portmap",
"capabilities": {"portMappings": true},
"externalSetMarkChain": "KUBE-MARK-MASQ"
}
]
}
```
## Config Reference
* `cniOutput` (string, optional): output CNI request into file.
* `addHooks` (string array, optional): commands executed in container network namespace at interface add.
(note: but just execute it and does not catch command failure)
* `delHooks` (string array, optional): commands executed in container network namespace at interface delete.
(note: but just execute it and does not catch command failure)
* `checkHooks` (string array, optional): commands executed in container network namespace at interface check.
(note: but just execute it and does not catch command failure)
### Sample CNI Ouput
```
CmdAdd
ContainerID: cnitool-20c433bb2b1d6ede56d6
Netns: /var/run/netns/cnitest
IfName: eth0
Args:
Path: /opt/cni/bin
StdinData: {"cniOutput":"/tmp/cni_output.txt","cniVersion":"0.3.1","name":"test","prevResult":{"cniVersion":"0.3.1","interfaces":[{"name":"veth92e295cc","mac":"56:22:7f:b7:5b:75"},{"name":"eth0","mac":"46:b3:f3:77:bf:21","sandbox":"/var/run/netns/cnitest"}],"ips":[{"version":"4","interface":1,"address":"10.1.1.2/24","gateway":"10.1.1.1"}],"dns":{"nameservers":["10.64.255.25","8.8.8.8"]}},"type":"none"}
----------------------
CmdDel
ContainerID: cnitool-20c433bb2b1d6ede56d6
Netns: /var/run/netns/cnitest
IfName: eth0
Args:
Path: /opt/cni/bin
StdinData: {"cniOutput":"/tmp/cni_output.txt","cniVersion":"0.3.1","name":"test","type":"none"}
----------------------
```
|
