diff options
| -rw-r--r-- | nfvbenchvm/README.rst | 12 | ||||
| -rw-r--r-- | nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.generator | 20 | ||||
| -rw-r--r-- | nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.loopvm | 20 |
3 files changed, 50 insertions, 2 deletions
diff --git a/nfvbenchvm/README.rst b/nfvbenchvm/README.rst index 0b6fd37..29215c1 100644 --- a/nfvbenchvm/README.rst +++ b/nfvbenchvm/README.rst @@ -227,9 +227,21 @@ nfvbenchvm config file with management interface: INTF_MAC_MGMT=FA:16:3E:06:11:8A INTF_MGMT_CIDR=172.20.56.228/2 INTF_MGMT_IP_GW=172.20.56.225 + INTF_MGMT_MTU=1500 .. note:: `INTF_MGMT_IP_GW` and `INTF_MGMT_CIDR` parameters are used by the VM to automatically configure virtual interface and route to allow an external access through SSH. +.. note:: ``INTF_MGMT_MTU`` allows to specify the MTU of the management + interface in bytes. + + If ``INTF_MGMT_MTU`` is not specified, the MTU will be configured to + the conservative value of 1500: this will reduce the risk to get an + unmanageable VM. + + ``INTF_MGMT_MTU`` can also be set to the special value ``auto``: in + that case, the MTU will not be configured and it will keep the value + set by the hypervisor (default nfvbench behavior up to version + 5.0.3). Using pre-created direct-physical ports on openstack, mac addresses value are only known when VM is deployed. In this case, you can pass the port name in config: diff --git a/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.generator b/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.generator index 633403c..9ac23a3 100644 --- a/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.generator +++ b/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.generator @@ -86,6 +86,24 @@ if [ $INTF_MGMT_CIDR ] && [ $INTF_MGMT_IP_GW ]; then logger "NFVBENCHVM ERROR: Cannot find eth port for management port" return 1 fi + + # By default, configure the MTU of the management interface to the + # conservative value of 1500: this will reduce the risk to get an + # unmanageable VM in some setups. + # + # To set the MTU to a different value, configure the INTF_MGMT_MTU variable + # in /etc/nfvbenchvm.conf. If INTF_MGMT_MTU is set to the special value + # "auto", the MTU will not be configured and it will keep the value set by + # the hypervisor ("legacy" nfvbenchvm behavior). If INTF_MGMT_MTU is unset, + # the MTU will be set to 1500. In other cases, the MTU will be set to the + # value of INTF_MGMT_MTU. + # + if [[ -z "$INTF_MGMT_MTU" ]]; then + ip link set $ETH_PORT mtu 1500 + elif [[ "$INTF_MGMT_MTU" != "auto" ]]; then + ip link set $ETH_PORT mtu $INTF_MGMT_MTU + fi + ip addr add $INTF_MGMT_CIDR dev $ETH_PORT ip link set $ETH_PORT up ip route add default via $INTF_MGMT_IP_GW dev $ETH_PORT @@ -101,4 +119,4 @@ else /nfvbench/start-nfvbench.sh fi -exit 0
\ No newline at end of file +exit 0 diff --git a/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.loopvm b/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.loopvm index ecc8b05..608c2c7 100644 --- a/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.loopvm +++ b/nfvbenchvm/dib/elements/nfvbenchvm/static/etc/rc.d/rc.local.loopvm @@ -137,6 +137,24 @@ if [ $INTF_MGMT_CIDR ] && [ $INTF_MGMT_IP_GW ]; then else ETH_PORT="eth0" fi + + # By default, configure the MTU of the management interface to the + # conservative value of 1500: this will reduce the risk to get an + # unmanageable VM in some setups. + # + # To set the MTU to a different value, configure the INTF_MGMT_MTU variable + # in /etc/nfvbenchvm.conf. If INTF_MGMT_MTU is set to the special value + # "auto", the MTU will not be configured and it will keep the value set by + # the hypervisor ("legacy" nfvbenchvm behavior). If INTF_MGMT_MTU is unset, + # the MTU will be set to 1500. In other cases, the MTU will be set to the + # value of INTF_MGMT_MTU. + # + if [[ -z "$INTF_MGMT_MTU" ]]; then + ip link set $ETH_PORT mtu 1500 + elif [[ "$INTF_MGMT_MTU" != "auto" ]]; then + ip link set $ETH_PORT mtu $INTF_MGMT_MTU + fi + ip addr add $INTF_MGMT_CIDR dev $ETH_PORT ip link set $ETH_PORT up ip route add default via $INTF_MGMT_IP_GW dev $ETH_PORT @@ -244,4 +262,4 @@ else logger "NFVBENCHVM ERROR: Cannot find PCI Address from MAC" fi -exit 0
\ No newline at end of file +exit 0 |