Add scripts to use Azure CNI with docker as orchestrator

Author: sharmasushant

scripts/docker-del.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+# Delete a docker container with network namespace cleaned up by the Azure CNI plugin.
+# Example usage: ./docker-run.sh ubuntu default
+
+if [ $# -ne 2 ]; then
+	echo "usage: docker-run.sh <container-name> <namespace>"
+	exit 1
+fi
+
+pid=$(docker inspect -f '{{ .State.Pid }}' $1)
+netnspath=/proc/$pid/ns/net
+contid=$(docker inspect -f '{{ .Id }}' $1)
+export CNI_CONTAINERID=$contid
+
+netns=netnspath
+export CNI_PATH='/opt/cni/bin'
+export CNI_COMMAND='DEL'
+export PATH=$CNI_PATH:$PATH
+export CNI_NETNS=$netns
+args=$(printf "K8S_POD_NAMESPACE=%s;K8S_POD_NAME=%s" $2 $1)
+export CNI_ARGS=$args
+export CNI_IFNAME='eth0'
+
+
+config=$(jq '.plugins[0]' /etc/cni/net.d/10-azure.conflist)
+name=$(jq -r '.name' /etc/cni/net.d/10-azure.conflist)
+config=$(echo $config | jq --arg name $name '. + {name: $name}')
+cniVersion=$(jq -r '.cniVersion' /etc/cni/net.d/10-azure.conflist)
+config=$(echo $config | jq --arg cniVersion $cniVersion '. + {cniVersion: $cniVersion}')
+
+res=$(echo $config | azure-vnet)
+
+
+if [ $? -ne 0 ]; then
+	errmsg=$(echo $res | jq -r '.msg')
+	if [ -z "$errmsg" ]; then
+		errmsg=$res
+	fi
+	echo "${name} : error executing $CNI_COMMAND: $errmsg"
+	exit 1
+elif [[ ${DEBUG} -gt 0 ]]; then
+	echo ${res} | jq -r .
+fi
+
+
+docker rm -f $1

scripts/docker-run.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Run a docker container with network namespace set up by the Azure CNI plugin.
+# Example usage: ./docker-run.sh ubuntu default sushantsharma/ubuntu-s5
+
+if [ $# -ne 3 ]; then
+	echo "usage: docker-run.sh <container-name> <namespace> <image>"
+	exit 1
+fi
+
+contid=$(docker run -d --name $1 --net=none $3 /bin/sleep 10000000)
+export CNI_CONTAINERID=$contid
+pid=$(docker inspect -f '{{ .State.Pid }}' $contid)
+netns=/proc/$pid/ns/net
+
+export CNI_PATH='/opt/cni/bin'
+export CNI_COMMAND='ADD'
+export PATH=$CNI_PATH:$PATH
+export CNI_NETNS=$netns
+args=$(printf "K8S_POD_NAMESPACE=%s;K8S_POD_NAME=%s" $2 $1)
+export CNI_ARGS=$args
+export CNI_IFNAME='eth0'
+
+config=$(jq '.plugins[0]' /etc/cni/net.d/10-azure.conflist)
+name=$(jq -r '.name' /etc/cni/net.d/10-azure.conflist)
+config=$(echo $config | jq --arg name $name '. + {name: $name}')
+cniVersion=$(jq -r '.cniVersion' /etc/cni/net.d/10-azure.conflist)
+config=$(echo $config | jq --arg cniVersion $cniVersion '. + {cniVersion: $cniVersion}')
+
+res=$(echo $config | azure-vnet)
+
+if [ $? -ne 0 ]; then
+	errmsg=$(echo $res | jq -r '.msg')
+	if [ -z "$errmsg" ]; then
+		errmsg=$res
+	fi
+	echo "${name} : error executing $CNI_COMMAND: $errmsg"
+	exit 1
+elif [[ ${DEBUG} -gt 0 ]]; then
+	echo ${res} | jq -r .
+fi
+