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#!/bin/bash
# Creates named container from given image.
#
# $1 - container name
# $2 - image name
# $3 - cpu allocation (default = 1.0)
#
function create_container {
container_name=$1
image_name=$2
if [ -z "$3" ]
then
cpu="1.0"
else
cpu=$3
fi
echo "Creating $container_name from $image_name, cpu allocation: $cpu"
docker run -dt --cpus=${cpu} --privileged --name=${container_name} ${image_name} /bin/bash
}
# Starts container
# and adds container's network namespace
# to the linux runtime data (/var/run).
#
# $1 - container name
#
# See:
# https://platform9.com/blog/container-namespaces-deep-dive-container-networking/
#
function start_container {
container_name=$1
echo "Starting container $container_name"
# Remove namespace if it was present
ip netns del ${container_name} 2> /dev/null
# Start container
docker start ${container_name}
# Make container's network namespaces accessible using ip netns
pid=$(docker inspect -f '{{.State.Pid}}' ${container_name})
sudo mkdir -p /var/run/netns
sudo ln -sf /proc/${pid}/ns/net /var/run/netns/${container_name}
echo "Container $container_name started successfully (pid=$pid)"
}
# Starts vpp in container
#
# $1 - container name
#
function start_vpp_in_container {
container=$1
echo "Starting vpp in $container"
# Start VPP in container
sudo docker exec -d ${container} ./vpp/start.sh
result="stopped"
echo -e "Waiting for vpp in ${container} to start\n"
while [ "$result" != "started" ]
do
found=`sudo docker exec ${container} vppctl sh int 2> /dev/null |grep "local0"`
if [[ ${found} = *"local0"* ]]; then
result="started"
fi
echo -ne "."
sleep 1
done
echo -e "\nVPP in $container started successfully"
}
# Starts vpp in container
#
# $1 - container name
#
function start_hc_in_container {
container=$1
echo "Starting hc in $container"
# Start HC in container
sudo docker exec -d ${container} ./honeycomb/start.sh
match="Honeycomb started successfully!"
result="stopped"
echo "Waiting for hc in ${container} to start"
while [ "$result" != "started" ]
do
found=`sudo docker exec ${container} tail /var/log/honeycomb/honeycomb.log 2> /dev/null | grep "${match}"`
if [[ ${found} = *"${match}"* ]]; then
result="started"
fi
echo -ne "."
sleep 1
done
echo -e "\nHC in $container started successfully"
}
# Links two containers using a veth pair.
#
# $1 - name of the container A
# $2 - name of the veth endpoint that belongs to A
# $3 - name of the veth endpoint that belongs to B
# $4 - name of the container B
#
function create_link {
container1=$1
if1=$2
if2=$3
container2=$4
echo -ne "Creating link from $container1($if1) to $container2($if2)"
ip link add ${if1} type veth peer name ${if2}
# Move veth endpoints to corresponding namespaces
ip link set ${if1} netns ${container1}
ip link set ${if2} netns ${container2}
# Bring interfaces up
ip netns exec ${container1} ip link set ${if1} up
ip netns exec ${container2} ip link set ${if2} up
# Set interfaces mtu to 9000 to match default VPP mtu values
ip netns exec ${container1} ifconfig ${if1} mtu 9000
ip netns exec ${container2} ifconfig ${if2} mtu 9000
echo " -> done."
}
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