运行结果如下：
$ ./nova-ifinfo a7026868-407c-4c54-bb8f-a68623d7e13f
vm name is: instance-00000035 # 查找VM的名字
qemu pid is: 43146, iface host fd: 28, iface fd: 26, iface MAC: fa:16:3e:3f:ae:50
# 查找VM的tap设备的fd，通过fd找到对应的bridge。
************************************************
VM:instance-00000035 ---> tap: tap4ab104d3-5f ---> bridge: qbr4ab104d3-5f
************************************************
# 遍历VM的bridge。
************************************************
bridge: qbr4ab104d3-5f
|__ qvb4ab104d3-5f
|__ tap4ab104d3-5f
************************************************
# 找到VM的bridge的veth设备，通过veth设备，找到对端接在哪个bridge上。
************************************************
bridge: qbr4ab104d3-5f bridge: br-int
|__ veth: qvb4ab104d3-5f <----> veth: qvo4ab104d3-5f __|
************************************************
# 接续查找该bridge接到了哪里。
************************************************
bridge: br-int bridge: br-tun
|__ veth: patch-tun <----> veth: patch-int __|
bridge: br-int bridge: br-ex
|__ veth: int-br-ex <----> veth: phy-br-ex __|
************************************************
内容如下：
$ cat nova-ifinfo
精简版
#!/bin/bash
ST=`nova hypervisor-servers $HOSTNAME | grep $`
if [[ $? != ]] ; then
echo "not find $1 on $HOSTNAME"
nova hypervisor-servers $HOSTNAME
exit
fi ST=`nova show $`
if [[ $? != ]] ; then
nova list
exit
fi QEMU_NAME=`nova show $ |grep "OS-EXT-SRV-ATTR:instance_name" | awk '{print $4}'`
if [[ $? != ]] ; then
exit
fi ST=`sudo virsh domstate $`
if [[ $? != ]] ; then
exit
fi
if [[ "$ST" =~ "shut off" ]] ; then
sudo virsh list --all
echo "$QEMU_NAME is shut off"
exit
fi
echo "vm name is: $QEMU_NAME" QEMU_CMD=`ps -ef |grep " $QEMU_NAME " |grep -v grep`
# echo $QEMU_CMD
QEMU_PID=`cut -d " " -f2 <<< $QEMU_CMD`
CMD_IFS=""
IF_FD=""
HOST_FD=""
[[ "$QEMU_CMD" =~ "-netdev" ]] && CMD_IFS=${QEMU_CMD#*-netdev}
[[ "$QEMU_CMD" =~ "tap,fd=" ]] && CMD_IFS=${CMD_IFS#*tap,fd=} && IF_FD=${CMD_IFS%%,*}
[[ "$QEMU_CMD" =~ "vhostfd=" ]] && CMD_IFS=${CMD_IFS#*vhostfd=} && HOST_FD=${CMD_IFS%% *}
[[ "$QEMU_CMD" =~ "mac=" ]] && CMD_MAC=${QEMU_CMD#*mac=} && CMD_MAC=${CMD_MAC%%,*} echo "qemu pid is: $QEMU_PID, iface host fd: $HOST_FD, iface fd: $IF_FD, iface MAC: $CMD_MAC" # egrep -l iff:.*tap* /proc/*/fdinfo/* 2>/dev/null|cut -d/ -f3
TAPNAME=`sudo cat /proc/$QEMU_PID/fdinfo/$IF_FD | grep "iff:.*tap*"`
TAPNAME=${TAPNAME#iff:[[:space:]]*}
# TAPNAME="${TAPNAME##[[:space:]]}"
# TAPNAME="${TAPNAME//[[:space:]]/}" # kernel version less than 3.14
if [[ -z $TAPNAME ]]; then
TAPNAME=`ifconfig |grep ${CMD_MAC:2}`
TAPNAME="${TAPNAME%%[[:space:]]*}"
fi BR=`ls -l /sys/class/net/$TAPNAME/brport/bridge`
BR=${BR##*/}
# BR=""
# for br in `ls /sys/class/net/`; do
# if [[ -d "/sys/class/net/$br/bridge" && -d "/sys/class/net/$br/lower_$TAPNAME" ]]; then
# BR=$br
# break
# fi
# done echo ""
echo "************************************************"
echo "VM:$QEMU_NAME ---> tap: $TAPNAME ---> bridge: $BR"
echo "************************************************" echo ""
echo "************************************************"
echo "bridge: $BR"
for port in `ls /sys/class/net/$BR/brif/`; do
echo " |__ $port"
done
echo "************************************************" # BR_PORT="qvb${BR:3}"
# OVS_PORT="qvo${BR_PORT:3}"
OVS_BR_INT=""
echo ""
echo "************************************************"
for port in `ls /sys/class/net/$BR/brif/`; do
PORT_TY=`ethtool -i $port | grep "driver:" |awk '{print $2}'`
if [[ $PORT_TY == "veth" ]] ; then
PEER_INDEX=`ethtool -S $port | grep "peer_ifindex:" |awk '{print $2}'`
for peer in `ls /sys/class/net/`; do
INDEX=`cat /sys/class/net/$peer/ifindex`
if [[ $PEER_INDEX == $INDEX ]]; then
if [[ -d /sys/class/net/$OVS_PORT/brport/bridge ]]; then
OVS_BR_INT=`ls /sys/class/net/$OVS_PORT/brport/bridge -l`
OVS_BR_INT=${OVS_BR_INT##*/}
else
OVS_BR_INT=`sudo ovs-vsctl port-to-br $peer`
# OVS_BR_INT=`sudo ovs-vsctl iface-to-br $peer`
fi
echo "bridge: $BR bridge: $OVS_BR_INT"
echo " |__ patch: $port <----> patch: $peer __|"
fi
done
fi
done
echo "************************************************" IS_OVS=`sudo ovs-vsctl list-br | grep $OVS_BR_INT`
OVS_INFOS=`sudo ovs-vsctl show |tr "\n" " "`
ALL="" echo ""
echo "************************************************"
while [[ "$OVS_INFOS" =~ "{peer=" ]]
do
PORT=${OVS_INFOS%%\}*}
PORT=${PORT%[[:space:]]*type*}
PORT=${PORT##*Interface}
PORT=`echo $PORT`
PEER=${OVS_INFOS#*\{peer=}
PEER=${PEER%%\}*}
OVS_INFOS=${OVS_INFOS#*\{peer=*\}}
if [[ ! "$ALL" =~ "$PORT" ]]
then
ALL="$ALL $PORT $PEER"
PEER_BR=`sudo ovs-vsctl iface-to-br $PORT`
BR=`sudo ovs-vsctl iface-to-br $PEER`
echo "bridge: $BR bridge: $PEER_BR"
echo " |__ veth: $PEER <----> veth: $PORT __|"
echo ""
else
continue
fi
done
echo "************************************************" # for port in `sudo ovs-vsctl show |grep "options: {peer=" |cut -d "=" -f2`
# do
# port=${port%%\}*}
# THIS_BR=`sudo ovs-vsctl iface-to-br $port`
# if [[ $THIS_BR == $OVS_BR_INT ]]; then
#
# echo "bridge: $THIS_BR bridge: $PEER_BR"
# echo " |__ veth: $port <----> veth: $peer __|"
#
# fi
# done
#!/bin/bash
ST=`nova hypervisor-servers $HOSTNAME | grep $`
if [[ $? != ]] ; then
echo "not find $1 on $HOSTNAME"
nova hypervisor-servers $HOSTNAME
exit
fi ST=`nova show $`
if [[ $? != ]] ; then
nova list
exit
fi QEMU_NAME=`nova show $ |grep "OS-EXT-SRV-ATTR:instance_name" | awk '{print $4}'`
if [[ $? != ]] ; then
exit
fi ST=`sudo virsh domstate $`
if [[ $? != ]] ; then
exit
fi
if [[ "$ST" =~ "shut off" ]] ; then
sudo virsh list --all
echo "$QEMU_NAME is shut off"
exit
fi
echo ""
echo "vm name is: $QEMU_NAME" QEMU_CMD=`ps -ef |grep " $QEMU_NAME " |grep -v grep`
# echo $QEMU_CMD
QEMU_PID=`cut -d " " -f2 <<< $QEMU_CMD`
CMD_IFS=""
IF_FD=""
HOST_FD=""
[[ "$QEMU_CMD" =~ "-netdev" ]] && CMD_IFS=${QEMU_CMD#*-netdev}
[[ "$QEMU_CMD" =~ "tap,fd=" ]] && CMD_IFS=${CMD_IFS#*tap,fd=} && IF_FD=${CMD_IFS%%,*}
[[ "$QEMU_CMD" =~ "vhostfd=" ]] && CMD_IFS=${CMD_IFS#*vhostfd=} && HOST_FD=${CMD_IFS%% *}
[[ "$QEMU_CMD" =~ "mac=" ]] && CMD_MAC=${QEMU_CMD#*mac=} && CMD_MAC=${CMD_MAC%%,*} echo "qemu pid is: $QEMU_PID, iface host fd: $HOST_FD, iface fd: $IF_FD, iface MAC: $CMD_MAC" FLOATING_IP=`nova floating-ip-list |grep $`
FIX_IP=`awk '{print $8}' <<< $FLOATING_IP`
FLOATING_IP=`awk '{print $4}' <<< $FLOATING_IP`
NETINFO=`nova show $ |grep "network *|"`
NETINFO=="${NETINFO##network[[:space:]]*|}"
NET_NAME="${NETINFO%[[:space:]]*network*}"
NET_NAME="${NET_NAME#*[[:space:]]*}"
NET_ID=`nova network-show $NET_NAME |grep "| *id *|" |awk '{print $4}'`
echo " fix ip is: $FIX_IP, floating ip is: $FLOATING_IP"
echo "network id is: $NET_ID"
echo "and info please run: sudo ip netns exec qdhcp-$NET_ID"
# echo `cat /opt/stack/data/neutron/dhcp/$NET_ID/opts |grep "router"` # egrep -l iff:.*tap* /proc/*/fdinfo/* 2>/dev/null|cut -d/ -f3
TAPNAME=`sudo cat /proc/$QEMU_PID/fdinfo/$IF_FD | grep "iff:.*tap*"`
TAPNAME=${TAPNAME#iff:[[:space:]]*}
# TAPNAME="${TAPNAME##[[:space:]]}"
# TAPNAME="${TAPNAME//[[:space:]]/}" # kernel version less than 3.14
if [[ -z $TAPNAME ]]; then
TAPNAME=`ifconfig |grep ${CMD_MAC:2}`
TAPNAME="${TAPNAME%%[[:space:]]*}"
fi BR=`ls -l /sys/class/net/$TAPNAME/brport/bridge`
BR=${BR##*/}
# BR=""
# for br in `ls /sys/class/net/`; do
# if [[ -d "/sys/class/net/$br/bridge" && -d "/sys/class/net/$br/lower_$TAPNAME" ]]; then
# BR=$br
# break
# fi
# done echo ""
echo "================================================================================"
echo "The follow are L2 info:"
echo "************************************************"
echo "VM:$QEMU_NAME ---> tap: $TAPNAME ---> bridge: $BR"
echo "************************************************" echo ""
echo "************************************************"
echo "bridge: $BR"
for port in `ls /sys/class/net/$BR/brif/`; do
echo " |__ port: $port"
done
echo "************************************************" # BR_PORT="qvb${BR:3}"
# OVS_PORT="qvo${BR_PORT:3}"
function br_connetion_brs_by_veth()
{
echo ""
echo "************************************************"
OVS_BR_INT=""
BR=$
for port in `ls /sys/class/net/$BR/brif/`; do
PORT_TY=`ethtool -i $port | grep "driver:" |awk '{print $2}'`
if [[ $PORT_TY == "veth" ]] ; then
PEER_INDEX=`ethtool -S $port | grep "peer_ifindex:" |awk '{print $2}'`
for peer in `ls /sys/class/net/`; do
INDEX=`cat /sys/class/net/$peer/ifindex`
BR_TYPE="linux_br"
if [[ $PEER_INDEX == $INDEX ]]; then
if [[ -d /sys/class/net/$OVS_PORT/brport/bridge ]]; then
BR_TYPE="linux_br"
OVS_BR_INT=`ls /sys/class/net/$OVS_PORT/brport/bridge -l`
OVS_BR_INT=${OVS_BR_INT##*/}
else
BR_TYPE="ovs_br"
OVS_BR_INT=`sudo ovs-vsctl port-to-br $peer`
# OVS_BR_INT=`sudo ovs-vsctl iface-to-br $peer`
fi
echo "bridge: $BR $BR_TYPE: $OVS_BR_INT"
echo " |__ veth: $port <----> veth: $peer __|"
fi
done
fi
done
echo "************************************************"
}
br_connetion_brs_by_veth $BR # IS_OVS=`sudo ovs-vsctl list-br | grep $OVS_BR_INT` echo ""
echo "************************************************"
function connetion_between_brs_by_peer()
{
OVS_INFOS=`sudo ovs-vsctl show |tr "\n" " "`
ALL=""
while [[ "$OVS_INFOS" =~ "{peer=" ]]
do
PORT=${OVS_INFOS%%\}*}
PORT=${PORT%[[:space:]]*type*}
PORT=${PORT##*Interface}
PORT=`echo $PORT`
PEER=${OVS_INFOS#*\{peer=}
PEER=${PEER%%\}*}
OVS_INFOS=${OVS_INFOS#*\{peer=*\}}
if [[ ! "$ALL" =~ "$PORT" ]]
then
ALL="$ALL $PORT $PEER"
PEER_BR=`sudo ovs-vsctl iface-to-br $PORT`
BR=`sudo ovs-vsctl iface-to-br $PEER`
echo "ovs_br: $BR ovs_br: $PEER_BR"
echo " |__ patch: $PEER <----> patch: $PORT __|"
echo ""
else
continue
fi
done
}
connetion_between_brs_by_peer
echo "************************************************" echo ""
echo "================================================================================"
echo "The follow are L3 info in namesapce:"
echo ""
echo "in name space qdhcp-$NET_ID:"
function ns_info()
{
NS=$
LOCAL_IFS=`sudo ip netns exec $NS ip link |egrep "[0-9]+: " | awk '{print $2}'`
for i in $LOCAL_IFS
do
if [[ ${i%%:} == lo ]]
then
continue
fi
echo "interface: ${i%%:}"
sudo ip netns exec $NS ip a show ${i%%:} |grep "global ${i%%:}"
DVR=`sudo ip netns exec $NS ethtool -i ${i%%:}|grep "driver:" |awk '{print $2}'`
if [[ $DVR == "openvswitch" ]]
then
OVS_BR=`sudo ip netns exec $NS ovs-vsctl iface-to-br ${i%%:}`
echo "ovs-bridge: $OVS_BR"
echo " |__ port: ${i%%:}"
else
echo "unknow iface type $DVR"
fi
echo ""
done
return $((+));
# return $($NS);
} ns_info qdhcp-$NET_ID
echo "Get route info by:"
echo "sudo ip netns exec qdhcp-$NET_ID route"
echo "Get iptable info by:"
echo "sudo ip netns exec qdhcp-$NET_ID iptables -nv -t nat -L" echo ""
echo "namespace router is: "
for i in `sudo ip netns |grep qrouter-`
do
echo "*****************************"
NAME_S=$i
ns_info $i
echo "Get route info by:"
echo "sudo ip netns exec $NAME_S route"
echo "Get iptable info by:"
echo "sudo ip netns exec $NAME_S iptables -nv -t nat -L"
echo ""
done function filter_link_by_ip()
{
for i in `ip netns`;
do
L_IP=`sudo ip netns exec $i ip addr |grep $`;
if [[ ! -z $L_IP ]]; then
L_PORT=${L_IP##*[[:space:]]}
echo "sudo ip netns exec $i ip a show $L_PORT"
sudo ip netns exec $i ip a show $L_PORT
break
fi
done
}
# filter_link_by_ip $FLOATING_IP #something wrong with this logic
function ovs_br_2_ovs_br()
{
for port in `sudo ovs-vsctl show |grep "options: {peer=" |cut -d "=" -f1`
do
port=${port%%\}*}
echo $port
THIS_BR=`sudo ovs-vsctl iface-to-br $port`
if [[ $THIS_BR == $OVS_BR_INT ]]; then echo "bridge: $THIS_BR bridge: $PEER_BR"
echo " |__ veth: $port <----> veth: $peer __|" fi
done
} # ovs_br_2_ovs_br # we can use this logic to find which VM attach to br_int
function connetion_between_brs()
{
echo ""
echo "************************************************"
IS_OVS=`sudo ovs-vsctl list-br | grep $OVS_BR_INT`
if [[ $IS_OVS == $OVS_BR_INT ]]; then
for port in `sudo ovs-vsctl list-ifaces $OVS_BR_INT`; do
PORT_TY=`ethtool -i $port >&- | grep "driver:" |awk '{print $2}'`
if [[ $PORT_TY == "veth" ]] ; then
PEER_INDEX=`ethtool -S $port | grep "peer_ifindex:" |awk '{print $2}'`
for peer in `ls /sys/class/net/`; do
INDEX=`cat /sys/class/net/$peer/ifindex`
if [[ $PEER_INDEX == $INDEX ]]; then
PEER_INT=""
if [[ -d /sys/class/net/$peer/brport/bridge ]]; then
PEER_INT=`ls /sys/class/net/$peer/brport/bridge -l`
PEER_INT=${PEER_INT##*/}
else
PEER_INT=`sudo ovs-vsctl port-to-br $peer`
# PEER_INT=`sudo ovs-vsctl iface-to-br $peer`
fi
if [[ "x$PEER_INT" == "x" ]]; then
continue
fi
echo "bridge: $OVS_BR_INT bridge: $PEER_INT"
echo " |__ veth: $port <----> veth: $peer __|"
echo ""
fi
done
fi
done
fi
echo "************************************************"
}
# connetion_between_brs "br_int" NETINFO=`nova show $ |grep "network *|"`
function find_nova_net_id()
{
NETINFO=$
NETINFO="${NETINFO##network[[:space:]]*|}"
NET_NAME="${NETINFO%[[:space:]]*network*}"
NET_NAME="${NET_NAME#*[[:space:]]*}"
ID=`nova network-show $NET_NAME |grep "| *id *|" |awk '{print $4}'`
echo "$ID"
}
NET_ID=`find_nova_net_id "$NETINFO"` function find_nova_net_ips()
{
NETINFO=$
IPS="${NETINFO#*network[[:space:]]*|}"
IPS="${IPS%[[:space:]]*|*}"
IPS="${IPS%[[:space:]]*}"
IPS=`tr "," " " <<< ${IPS#*[[:space:]]}`
for i in $IPS; do echo $i; done
}
# NET_ID=`find_nova_net_ips "$NETINFO"` # ps ww `pgrep dnsmasq` |grep $NET_ID