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diff --git a/resources/tools/virl/topologies/simple-ring.virl b/resources/tools/virl/topologies/simple-ring.virl
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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<topology xmlns="http://www.cisco.com/VIRL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" schemaVersion="0.9" xsi:schemaLocation="http://www.cisco.com/VIRL https://raw.github.com/CiscoVIRL/schema/v0.9/virl.xsd">
+ <extensions>
+ <entry key="management_network" type="String">flat</entry>
+ </extensions>
+ <node name="tg1" type="SIMPLE" subtype="server" location="570,238" vmImage="server-java">
+ <extensions>
+ <entry key="config" type="String">#cloud-config&#xD;
+bootcmd:&#xD;
+- ln -s -t /etc/rc.d /etc/rc.local&#xD;
+hostname: tg1&#xD;
+manage_etc_hosts: true&#xD;
+nfs_server_scratch: $$NFS_SERVER_SCRATCH$$
+nfs_server_common: $$NFS_SERVER_COMMON$$
+runcmd:&#xD;
+- start ttyS0&#xD;
+- systemctl start getty@ttyS0.service&#xD;
+- systemctl start rc-local&#xD;
+- touch /tmp/before-sed&#xD;
+- sed -i 's/^\s*PasswordAuthentication\s\+no/PasswordAuthentication yes/' /etc/ssh/sshd_config&#xD;
+- echo "UseDNS no" &gt;&gt; /etc/ssh/sshd_config&#xD;
+- service ssh restart&#xD;
+- service sshd restart&#xD;
+users:&#xD;
+- default&#xD;
+- gecos: User configured by VIRL Configuration Engine 0.21.4&#xD;
+ lock-passwd: false&#xD;
+ name: cisco&#xD;
+ plain-text-passwd: cisco&#xD;
+ shell: /bin/bash&#xD;
+ ssh-authorized-keys:&#xD;
+ - VIRL-USER-SSH-PUBLIC-KEY&#xD;
+ - VIRL-USER-SSH-PUBLIC-KEY&#xD;
+ sudo: ALL=(ALL) NOPASSWD:ALL&#xD;
+write_files:&#xD;
+- path: /etc/init/ttyS0.conf&#xD;
+ owner: root:root&#xD;
+ content: |&#xD;
+ # ttyS0 - getty&#xD;
+ # This service maintains a getty on ttyS0 from the point the system is&#xD;
+ # started until it is shut down again.&#xD;
+ start on stopped rc or RUNLEVEL=[12345]&#xD;
+ stop on runlevel [!12345]&#xD;
+ respawn&#xD;
+ exec /sbin/getty -L 115200 ttyS0 vt102&#xD;
+ permissions: '0644'&#xD;
+- path: /etc/systemd/system/dhclient@.service&#xD;
+ content: |&#xD;
+ [Unit]&#xD;
+ Description=Run dhclient on %i interface&#xD;
+ After=network.target&#xD;
+ [Service]&#xD;
+ Type=oneshot&#xD;
+ ExecStart=/sbin/dhclient %i -pf /var/run/dhclient.%i.pid -lf /var/lib/dhclient/dhclient.%i.lease&#xD;
+ RemainAfterExit=yes&#xD;
+ owner: root:root&#xD;
+ permissions: '0644'&#xD;
+- path: /usr/local/sbin/cloud-instance-name
+ content: |
+ #!/usr/bin/python
+ import pickle
+ print pickle.loads(open('/var/lib/cloud/instance/obj.pkl').read()).metadata['name']
+ owner: root:root
+ permissions: '0755'
+- path: /etc/rc.local&#xD;
+ owner: root:root&#xD;
+ permissions: '0755'&#xD;
+ content: |-&#xD;
+ #!/bin/sh&#xD;
+ ifconfig eth1 up 10.0.0.6 netmask 255.255.255.252&#xD;
+ ifconfig eth2 up 10.0.0.14 netmask 255.255.255.252&#xD;
+
+ grep -q nfs_server_scratch /var/lib/cloud/instance/user-data.txt || exit 1
+ grep -q nfs_server_common /var/lib/cloud/instance/user-data.txt || exit 1
+ nfs_server_scratch=$(grep -E '^nfs_server_scratch:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+ nfs_server_common=$(grep -E '^nfs_server_common:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+ instance_name=$(/usr/local/sbin/cloud-instance-name | cut -f 3 -d '&lt;' | cut -f 1 -d '&gt;')
+ echo My instance name is $instance_name
+
+ MAXCOUNT=12
+ RETRY=5
+
+ mkdir -p /scratch
+ mkdir -p /mnt/common
+
+ echo "Mounting NFS directories"
+ count=0
+ while [ $count -lt $MAXCOUNT ] &amp;&amp; ! mount -t nfs "${nfs_server_scratch}/${instance_name}" /scratch
+ do
+ sleep 5
+ count=$[$count+1]
+ done
+
+ mount -t nfs "${nfs_server_common}" /mnt/common
+
+ mkdir /scratch/$(hostname)
+
+ exit 0&#xD;
+</entry>
+ <entry key="Auto-generate config" type="Boolean">false</entry>
+ </extensions>
+ <interface id="0" name="eth1" ipv4="10.0.0.6" netPrefixLenV4="30"/>
+ <interface id="1" name="eth2" ipv4="10.0.0.14" netPrefixLenV4="30"/>
+ </node>
+ <node name="sut1" type="SIMPLE" subtype="vPP" location="425,26" vmImage="server-java">
+ <extensions>
+ <entry key="config" type="string">#cloud-config
+bootcmd:
+- ln -s -t /etc/rc.d /etc/rc.local
+hostname: sut1
+manage_etc_hosts: true
+nfs_server_scratch: $$NFS_SERVER_SCRATCH$$
+nfs_server_common: $$NFS_SERVER_COMMON$$
+runcmd:
+- start ttyS0
+- systemctl start getty@ttyS0.service
+- systemctl start rc-local
+- sed -i '/^\s*PasswordAuthentication\s\+no/d' /etc/ssh/sshd_config
+- echo "UseDNS no" &gt;&gt; /etc/ssh/sshd_config
+- service ssh restart
+- service sshd restart
+- sed -i 's/no-pci//' /opt/cisco/vpe/etc/qn.conf
+- sed -i 's/1024/1024 decimal-interface-names/g' /opt/cisco/vpe/etc/qn.conf
+users:
+- default
+- gecos: User configured by VIRL Configuration Engine 0.21.4
+ lock-passwd: false
+ name: cisco
+ plain-text-passwd: cisco
+ shell: /bin/bash
+ ssh-authorized-keys:
+ - VIRL-USER-SSH-PUBLIC-KEY
+ - VIRL-USER-SSH-PUBLIC-KEY
+ sudo: ALL=(ALL) NOPASSWD:ALL
+write_files:
+- path: /etc/init/ttyS0.conf
+ owner: root:root
+ content: |
+ # ttyS0 - getty
+ # This service maintains a getty on ttyS0 from the point the system is
+ # started until it is shut down again.
+ start on stopped rc or RUNLEVEL=[12345]
+ stop on runlevel [!12345]
+ respawn
+ exec /sbin/getty -L 115200 ttyS0 vt102
+ permissions: '0644'
+- path: /etc/systemd/system/dhclient@.service
+ content: |
+ [Unit]
+ Description=Run dhclient on %i interface
+ After=network.target
+ [Service]
+ Type=oneshot
+ ExecStart=/sbin/dhclient %i -pf /var/run/dhclient.%i.pid -lf /var/lib/dhclient/dhclient.%i.lease
+ RemainAfterExit=yes
+ owner: root:root
+ permissions: '0644'
+- path: /usr/local/sbin/cloud-instance-name
+ content: |
+ #!/usr/bin/python
+ import pickle
+ print pickle.loads(open('/var/lib/cloud/instance/obj.pkl').read()).metadata['name']
+ owner: root:root
+ permissions: '0755'
+- path: /etc/rc.local&#xD;
+ owner: root:root&#xD;
+ permissions: '0755'&#xD;
+ content: |-&#xD;
+ #!/bin/sh&#xD;
+ grep -q nfs_server_scratch /var/lib/cloud/instance/user-data.txt || exit 1
+ grep -q nfs_server_common /var/lib/cloud/instance/user-data.txt || exit 1
+ nfs_server_scratch=$(grep -E '^nfs_server_scratch:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+ nfs_server_common=$(grep -E '^nfs_server_common:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+ instance_name=$(/usr/local/sbin/cloud-instance-name | cut -f 3 -d '&lt;' | cut -f 1 -d '&gt;')
+ echo My instance name is $instance_name
+
+ MAXCOUNT=12
+ RETRY=5
+
+ mkdir -p /scratch
+ mkdir -p /mnt/common
+
+ echo "Mounting NFS directories"
+ count=0
+ while [ $count -lt $MAXCOUNT ] &amp;&amp; ! mount -t nfs "${nfs_server_scratch}/${instance_name}" /scratch
+ do
+ sleep 5
+ count=$[$count+1]
+ done
+
+ mount -t nfs "${nfs_server_common}" /mnt/common
+
+ mkdir /scratch/$(hostname)
+
+ exit 0&#xD;
+</entry>
+ </extensions>
+ <interface id="0" name="GigabitEthernet0/4/0" ipv4="10.0.0.9" netPrefixLenV4="30"/>
+ <interface id="1" name="GigabitEthernet0/5/0" ipv4="10.0.0.5" netPrefixLenV4="30"/>
+ </node>
+ <node name="sut2" type="SIMPLE" subtype="vPP" location="748,26" vmImage="server-java">
+ <extensions>
+ <entry key="config" type="string">#cloud-config
+bootcmd:
+- ln -s -t /etc/rc.d /etc/rc.local
+hostname: sut2
+manage_etc_hosts: true
+nfs_server_scratch: $$NFS_SERVER_SCRATCH$$
+nfs_server_common: $$NFS_SERVER_COMMON$$
+runcmd:
+- start ttyS0
+- systemctl start getty@ttyS0.service
+- systemctl start rc-local
+- sed -i '/^\s*PasswordAuthentication\s\+no/d' /etc/ssh/sshd_config
+- echo "UseDNS no" &gt;&gt; /etc/ssh/sshd_config
+- service ssh restart
+- service sshd restart
+- sed -i 's/no-pci//' /opt/cisco/vpe/etc/qn.conf
+- sed -i 's/1024/1024 decimal-interface-names/g' /opt/cisco/vpe/etc/qn.conf
+users:
+- default
+- gecos: User configured by VIRL Configuration Engine 0.21.4
+ lock-passwd: false
+ name: cisco
+ plain-text-passwd: cisco
+ shell: /bin/bash
+ ssh-authorized-keys:
+ - VIRL-USER-SSH-PUBLIC-KEY
+ - VIRL-USER-SSH-PUBLIC-KEY
+ sudo: ALL=(ALL) NOPASSWD:ALL
+write_files:
+- path: /etc/init/ttyS0.conf
+ owner: root:root
+ content: |
+ # ttyS0 - getty
+ # This service maintains a getty on ttyS0 from the point the system is
+ # started until it is shut down again.
+ start on stopped rc or RUNLEVEL=[12345]
+ stop on runlevel [!12345]
+ respawn
+ exec /sbin/getty -L 115200 ttyS0 vt102
+ permissions: '0644'
+- path: /etc/systemd/system/dhclient@.service
+ content: |
+ [Unit]
+ Description=Run dhclient on %i interface
+ After=network.target
+ [Service]
+ Type=oneshot
+ ExecStart=/sbin/dhclient %i -pf /var/run/dhclient.%i.pid -lf /var/lib/dhclient/dhclient.%i.lease
+ RemainAfterExit=yes
+ owner: root:root
+ permissions: '0644'
+- path: /usr/local/sbin/cloud-instance-name
+ content: |
+ #!/usr/bin/python
+ import pickle
+ print pickle.loads(open('/var/lib/cloud/instance/obj.pkl').read()).metadata['name']
+ owner: root:root
+ permissions: '0755'
+- path: /etc/rc.local&#xD;
+ owner: root:root&#xD;
+ permissions: '0755'&#xD;
+ content: |-&#xD;
+ #!/bin/sh&#xD;
+ grep -q nfs_server_scratch /var/lib/cloud/instance/user-data.txt || exit 1
+ grep -q nfs_server_common /var/lib/cloud/instance/user-data.txt || exit 1
+ nfs_server_scratch=$(grep -E '^nfs_server_scratch:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+ nfs_server_common=$(grep -E '^nfs_server_common:' /var/lib/cloud/instance/user-data.txt | awk '{ print $2 }')
+ instance_name=$(/usr/local/sbin/cloud-instance-name | cut -f 3 -d '&lt;' | cut -f 1 -d '&gt;')
+ echo My instance name is $instance_name
+
+ MAXCOUNT=12
+ RETRY=5
+
+ mkdir -p /scratch
+ mkdir -p /mnt/common
+
+ echo "Mounting NFS directories"
+ count=0
+ while [ $count -lt $MAXCOUNT ] &amp;&amp; ! mount -t nfs "${nfs_server_scratch}/${instance_name}" /scratch
+ do
+ sleep 5
+ count=$[$count+1]
+ done
+
+ mount -t nfs "${nfs_server_common}" /mnt/common
+
+ mkdir /scratch/$(hostname)
+
+ exit 0&#xD;
+</entry>
+ </extensions>
+ <interface id="0" name="GigabitEthernet0/4/0" ipv4="10.0.0.13" netPrefixLenV4="30"/>
+ <interface id="1" name="GigabitEthernet0/5/0" ipv4="10.0.0.10" netPrefixLenV4="30"/>
+ </node>
+ <connection dst="/virl:topology/virl:node[1]/virl:interface[2]" src="/virl:topology/virl:node[3]/virl:interface[1]"/>
+ <connection dst="/virl:topology/virl:node[2]/virl:interface[2]" src="/virl:topology/virl:node[1]/virl:interface[1]"/>
+ <connection dst="/virl:topology/virl:node[3]/virl:interface[2]" src="/virl:topology/virl:node[2]/virl:interface[1]"/>
+</topology>