Library ./UtilLibrary.py
Resource KarafKeywords.robot
Resource OpenStackOperations.robot
-Variables ../variables/Variables.py
+Resource SSHKeywords.robot
+Resource ../variables/Variables.robot
*** Variables ***
-${ODL_VERSION} lithium-SR3
-${OPENSTACK_BRANCH} stable/liberty
-${NETWORKING-ODL_BRANCH} ${OPENSTACK_BRANCH}
-${TEMPEST_REGEX} tempest.api.network
-${ODL_BOOT_WAIT_URL} restconf/operational/network-topology:network-topology/topology/netvirt:1
${default_devstack_prompt_timeout} 10s
-${devstack_workspace} ~/ds_workspace
${DEVSTACK_SYSTEM_PASSWORD} \ # set to empty, but provide for others to override if desired
-${CLEAN_DEVSTACK_HOST} False
+${blacklist_file} /tmp/blacklist.txt
+@{stable/newton_exclusion_regexes} ${EMPTY}
+@{stable/ocata_exclusion_regexes} ${EMPTY}
+@{stable/pike_exclusion_regexes} ${EMPTY}
+@{master_exclusion_regexes} ${EMPTY}
+${tempest_dir} /opt/stack/tempest
+${tempest_config_file} ${tempest_dir}/etc/tempest.conf
+${external_physical_network} physnet1
+${external_net_name} external-net
+${external_subnet_name} external-subnet
+# Parameter values below are based on releng/builder - changing them requires updates in releng/builder as well
+${external_gateway} 10.10.10.250
+${external_subnet_allocation_pool} start=10.10.10.2,end=10.10.10.249
+${external_subnet} 10.10.10.0/24
+${TEMPEST_TIMEOUT} 420s
+${OS_CNTL_CONN_ID} None
+${OS_CMP1_CONN_ID} None
+${OS_CMP2_CONN_ID} None
+${OS_CNTL_IP} ${EMPTY}
+${OS_CMP1_IP} ${EMPTY}
+${OS_CMP2_IP} ${EMPTY}
+@{OS_ALL_IPS} @{EMPTY}
+@{OS_CMP_IPS} @{EMPTY}
*** Keywords ***
Run Tempest Tests
- [Arguments] ${tempest_regex} ${tempest_exclusion_regex}="" ${tempest_conf}="" ${tempest_directory}=/opt/stack/tempest ${timeout}=600s
- [Documentation] Execute the tempest tests.
+ [Arguments] ${tempest_regex} ${timeout}=${TEMPEST_TIMEOUT} ${debug}=False
+ Run Keyword If "${debug}"=="False" Run Tempest Tests Without Debug ${tempest_regex} timeout=${timeout}
+ Run Keyword If "${debug}"=="True" Run Tempest Tests With Debug ${tempest_regex} timeout=${timeout}
+ Run Keyword If "${debug}"!="True" and "${debug}"!="False" Fail debug argument must be True or False
+
+Run Tempest Tests Without Debug
+ [Arguments] ${tempest_regex} ${tempest_directory}=${tempest_dir} ${timeout}=${TEMPEST_TIMEOUT}
+ [Documentation] Using ostestr will allow us to (by default) run tests in paralllel.
+ ... Because of the parallel fashion, we must ensure there is no pause on teardown so that flag in tempest.conf is
+ ... explicitly set to False.
+ Return From Keyword If "skip_if_${OPENSTACK_BRANCH}" in @{TEST_TAGS}
+ Return From Keyword If "skip_if_${SECURITY_GROUP_MODE}" in @{TEST_TAGS}
+ ${tempest_conn_id}= SSHLibrary.Open Connection ${OS_CONTROL_NODE_IP} prompt=${DEFAULT_LINUX_PROMPT_STRICT}
+ SSHKeywords.Flexible SSH Login ${OS_USER} ${DEVSTACK_SYSTEM_PASSWORD}
+ Write Commands Until Prompt source ${DEVSTACK_DEPLOY_PATH}/openrc admin admin
+ Write Commands Until Prompt cd ${tempest_directory}
+ SSHLibrary.Read
+ Tempest Conf Modify Pause On Test Teardown False
+ SSHLibrary.Set Client Configuration timeout=${timeout}
+ # There are tons of deprecation error messages when we use ostestr in our CSIT environment (openstack via devstack)
+ # The robot log files are very large and one culprit is all these deprecation warnings. If we redirect stderr to
+ # /dev/null we should be able to ignore them. We will miss any other errors, however.
+ ${output}= Write Commands Until Prompt ostestr --regex ${tempest_regex} 2>/dev/null timeout=${timeout}
+ Log ${output}
+ SSHLibrary.Close Connection
+ Should Contain ${output} Failed: 0
+
+Run Tempest Tests With Debug
+ [Arguments] ${tempest_regex} ${tempest_directory}=${tempest_dir} ${timeout}=${TEMPEST_TIMEOUT}
+ [Documentation] After setting pause_teardown=True in tempest.conf, use the python -m testtools.run module to execute
+ ... a single tempest test case. We need to run only one tempest test case at a time as there will
+ ... be potentional for an unkown number of debug pdb() prompts to catch and continue if we are running multiple
+ ... test cases with a single command. Essentially, this keyword only handles one breakpoint at a single teardown.
+ Return From Keyword If "skip_if_${OPENSTACK_BRANCH}" in @{TEST_TAGS}
+ Return From Keyword If "skip_if_${SECURITY_GROUP_MODE}" in @{TEST_TAGS}
+ ${tempest_conn_id}= SSHLibrary.Open Connection ${OS_CONTROL_NODE_IP} prompt=${DEFAULT_LINUX_PROMPT_STRICT}
+ SSHKeywords.Flexible SSH Login ${OS_USER} ${DEVSTACK_SYSTEM_PASSWORD}
Write Commands Until Prompt source ${DEVSTACK_DEPLOY_PATH}/openrc admin admin
Write Commands Until Prompt cd ${tempest_directory}
- Write Commands Until Prompt sudo rm -rf ${tempest_directory}/.testrepository
- Write Commands Until Prompt sudo testr list-tests | egrep ${tempest_regex} | egrep -v ${tempest_exclusion_regex} > tests_to_execute.txt
- ${tests_to_execute}= Write Commands Until Prompt sudo cat tests_to_execute.txt
- Log ${tests_to_execute}
- # run_tempests.sh is a wrapper to testr, and we are providing the config file
- ${results}= Write Commands Until Prompt sudo -E ./run_tempest.sh -C ${tempest_conf} -N ${tempest_regex} -- --load-list tests_to_execute.txt timeout=${timeout}
- Log ${results}
- Create File tempest_output_${tempest_regex}.log data=${results}
- Should Contain ${results} Failed: 0
- # TODO: also need to verify some non-zero pass count as well as other results are ok (e.g. skipped, etc)
-
-Devstack Suite Setup Tests
- [Arguments] ${source_pwd}=no
- [Documentation] Login to the Openstack Control Node to run tempest suite
- ${devstack_conn_id}= SSHLibrary.Open Connection ${OS_CONTROL_NODE_IP} prompt=${DEFAULT_LINUX_PROMPT}
- Set Suite Variable ${devstack_conn_id}
- Set Suite Variable ${source_pwd}
- Log ${devstack_conn_id}
- Utils.Flexible SSH Login ${OS_USER} ${DEVSTACK_SYSTEM_PASSWORD}
- SSHLibrary.Set Client Configuration timeout=${default_devstack_prompt_timeout}
+ SSHLibrary.Read
+ Tempest Conf Modify Pause On Test Teardown True
+ SSHLibrary.Set Client Configuration timeout=${timeout}
+ SSHLibrary.Write python -m testtools.run ${tempest_regex}
+ ${output}= SSHLibrary.Read Until Regexp ${DEFAULT_LINUX_PROMPT_STRICT}|pdb.set_trace()
+ Log ${output}
+ Show Debugs
+ Get Test Teardown Debugs
+ SSHLibrary.Switch Connection ${tempest_conn_id}
+ SSHLibrary.Write continue
+ ${output}= SSHLibrary.Read Until Regexp ${DEFAULT_LINUX_PROMPT_STRICT}|pdb.set_trace()
+ Log ${output}
+ SSHLibrary.Write continue
+ ${output}= SSHLibrary.Read Until Prompt
+ Log ${output}
+ SSHLibrary.Close Connection
+ Should Contain ${output} OK
+ Should Not Contain ${output} FAILED
+
+Suite Setup
+ OpenStackOperations.OpenStack Suite Setup
+ Log In To Tempest Executor And Setup Test Environment
+
+Log In To Tempest Executor And Setup Test Environment
+ [Documentation] Initialize SetupUtils, open SSH connection to a devstack system and source the openstack
+ ... credentials needed to run the tempest tests. The (sometimes empty) tempest blacklist file will be created
+ ... and pushed to the tempest executor.
+ Create Blacklist File
+ # Tempest tests need an existing external network in order to create routers.
+ Create Network ${external_net_name} --external --default --provider-network-type flat --provider-physical-network ${PUBLIC_PHYSICAL_NETWORK}
+ Create Subnet ${external_net_name} ${external_subnet_name} ${external_subnet} --gateway ${external_gateway} --allocation-pool ${external_subnet_allocation_pool}
+ List Networks
+ ${control_node_conn_id}= SSHLibrary.Open Connection ${OS_CONTROL_NODE_IP} prompt=${DEFAULT_LINUX_PROMPT_STRICT}
+ SSHKeywords.Flexible SSH Login ${OS_USER}
+ Write Commands Until Prompt source ${DEVSTACK_DEPLOY_PATH}/openrc admin admin
+ Write Commands Until Prompt sudo rm -rf /opt/stack/tempest/.testrepository
+ ${net_id}= Get Net Id ${external_net_name}
+ Tempest Conf Add External Network And Floating Network Name ${net_id}
+
+Tempest Conf Add External Network And Floating Network Name
+ [Arguments] ${external_network_id}
+ [Documentation] Tempest will be run with a config file - this function will add the
+ ... given external network ID to the configuration file.
+ Modify Config In File On Existing SSH Connection ${tempest_config_file} set network public_network_id ${external_network_id}
+ Modify Config In File On Existing SSH Connection ${tempest_config_file} set DEFAULT debug False
+ Modify Config In File On Existing SSH Connection ${tempest_config_file} set DEFAULT log_level INFO
+ Modify Config In File On Existing SSH Connection ${tempest_config_file} set network floating_network_name ${external_net_name}
+ Write Commands Until Prompt sudo cat ${tempest_config_file}
+ Write Commands Until Prompt sudo chmod 777 ${tempest_config_file}
+
+Tempest Conf Modify Pause On Test Teardown
+ [Arguments] ${pause_flag}
+ [Documentation] Sets the DEFAULT section flag for pausing the test teardown. If True the tempest test case
+ ... being executed will break to a pdb() debug shell when it hits it's teardown() function.
+ Modify Config In File On Existing SSH Connection ${tempest_config_file} set DEFAULT pause_teardown ${pause_flag}
+
+Modify Config In File On Existing SSH Connection
+ [Arguments] ${config_file} ${modifier} ${config_section} ${config_key} ${config_value}=${EMPTY}
+ [Documentation] uses crudini to populate oslo cofg file.
+ # this keyword is only one line so seems like extra overhead, but this may be a good candidate to move
+ # to a library at some point, when/if other suites need to use it, so wanted to make it generic.
+ Write Commands Until Prompt sudo -E crudini --${modifier} ${config_file} ${config_section} ${config_key} ${config_value}
+
+Create Blacklist File
+ [Documentation] For each exclusion regex in the required @{${OPENSTACK_BRANCH}_exclusion_regexes} list a new
+ ... line will be created in the required ${blacklist_file} location. This file is pushed to the OS_CONTROL_NODE
+ ... which is assumed to be the tempest executor.
+ OperatingSystem.Create File ${blacklist_file}
+ : FOR ${exclusion} IN @{${OPENSTACK_BRANCH}_exclusion_regexes}
+ \ OperatingSystem.Append To File ${blacklist_file} ${exclusion}\n
+ Log File ${blacklist_file}
+ SSHKeywords.Copy File To Remote System ${OS_CONTROL_NODE_IP} ${blacklist_file} ${blacklist_file}
+
+Open Connection
+ [Arguments] ${name} ${ip}
+ ${conn_id} = SSHLibrary.Open Connection ${ip} prompt=${DEFAULT_LINUX_PROMPT}
+ SSHKeywords.Flexible SSH Login ${OS_USER} ${DEVSTACK_SYSTEM_PASSWORD}
+ BuiltIn.Set Suite Variable \${${name}} ${conn_id}
+ [Return] ${conn_id}
Devstack Suite Setup
- [Arguments] ${source_pwd}=no
- [Documentation] Login to the Openstack Control Node to run tempest suite
- ${devstack_conn_id}= SSHLibrary.Open Connection ${DEVSTACK_SYSTEM_IP} prompt=${DEFAULT_LINUX_PROMPT}
- Set Suite Variable ${devstack_conn_id}
- Set Suite Variable ${source_pwd}
- Log ${devstack_conn_id}
- Utils.Flexible SSH Login ${DEVSTACK_SYSTEM_USER} ${DEVSTACK_SYSTEM_PASSWORD}
- SSHLibrary.Set Client Configuration timeout=${default_devstack_prompt_timeout}
- Run Keyword If ${CLEAN_DEVSTACK_HOST} Clean DevStack Host In Case It Is Not Sterile
- Write Commands Until Prompt export PATH=$PATH:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/sbin
- Write Commands Until Prompt export ODL_VERSION=${ODL_VERSION}
- Write Commands Until Prompt export OPENSTACK_BRANCH=${OPENSTACK_BRANCH}
- Write Commands Until Prompt export TEMPEST_REGEX=${TEMPEST_REGEX}
- Write Commands Until Prompt export ODL_BOOT_WAIT_URL=${ODL_BOOT_WAIT_URL}
- ${odl_version_to_install}= Get Networking ODL Version Of Release ${ODL_VERSION}
- Write Commands Until Prompt export DEVSTACK_LOCAL_CONFIG="enable_plugin networking-odl https://git.openstack.org/openstack/networking-odl ${NETWORKING-ODL_BRANCH};"
- Write Commands Until Prompt export DEVSTACK_LOCAL_CONFIG+="ODL_NETVIRT_DEBUG_LOGS=True;ODL_RELEASE=${odl_version_to_install};"
- Write Commands Until Prompt echo $DEVSTACK_LOCAL_CONFIG
- Write Commands Until Prompt export OVERRIDE_ZUUL_BRANCH=${OPENSTACK_BRANCH}
- Write Commands Until Prompt export PYTHONUNBUFFERED=true
- Write Commands Until Prompt export DEVSTACK_GATE_TIMEOUT=120
- Write Commands Until Prompt export DEVSTACK_GATE_TEMPEST=1
- Write Commands Until Prompt export DEVSTACK_GATE_NEUTRON=1
- Write Commands Until Prompt export KEEP_LOCALRC=1
- Write Commands Until Prompt export PROJECTS="openstack/networking-odl $PROJECTS"
- Write Commands Until Prompt export DEVSTACK_GATE_TEMPEST_REGEX=tempest.api.network.test_ports.PortsTestJSON.test_show_port
- Write Commands Until Prompt sudo yum -y install redhat-lsb-core indent python-testrepository timeout=120s
- Write Commands Until Prompt sudo /usr/sbin/groupadd ${DEVSTACK_SYSTEM_USER}
- Write Commands Until Prompt sudo mkdir -p /opt/stack/new
- Write Commands Until Prompt sudo chown -R ${DEVSTACK_SYSTEM_USER}:${DEVSTACK_SYSTEM_USER} /opt/stack/new
- Write Commands Until Prompt sudo bash -c 'echo "stack ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers'
- Write Commands Until Prompt sudo mkdir -p /usr/local/${DEVSTACK_SYSTEM_USER}/slave_scripts
- Write Commands Until Prompt git clone https://github.com/openstack/os-testr.git timeout=30s
- Write Commands Until Prompt cd os-testr/os_testr
- Write Commands Until Prompt sudo cp subunit2html.py /usr/local/${DEVSTACK_SYSTEM_USER}/slave_scripts
- Write Commands Until Prompt mkdir -p ${devstack_workspace}
- Write Commands Until Prompt cd ${devstack_workspace}
- Write Commands Until Prompt export WORKSPACE=${devstack_workspace}
- Write Commands Until Prompt rm -rf devstack-gate
- Write Commands Until Prompt git clone https://git.openstack.org/openstack-infra/devstack-gate timeout=30s
-
-Clean DevStack Host In Case It Is Not Sterile
- [Documentation] In upstream CI, the expectation is that the devstack VM is fresh, sterile and ready
- ... for any version of devstack, networking-odl, and OpenDaylight. During local test development,
- ... it can be faster to just clean the needed packages, configurations, repos, files, etc. instead of
- ... spinning up a new system. This keyword serves as a living list of those items needed to prep a
- ... potentially non-sterile devstack system.
- Write Commands Until Prompt pgrep python | awk '{print "sudo kill",$1}' | sh
- Write Commands Until Prompt pgrep java | awk '{print "sudo kill",$1}' | sh
- Write Commands Until Prompt rpm -qa | grep rdo
- Write Commands Until Prompt sudo rpm -e $(sudo rpm -qa | grep rdo)
- Write Commands Until Prompt sudo yum remove -y pyOpenSSL
- Write Commands Until Prompt sudo -H pip uninstall -y virtualenv
- Write Commands Until Prompt sudo rm -rf /tmp/ansible /opt/stack
- Write Commands Until Prompt rm -rf ${devstack_workspace} ~/os-testr
- Write Commands Until Prompt sudo ovs-vsctl del-br br-ex
- Write Commands Until Prompt sudo ovs-vsctl del-br br-int
- Write Commands Until Prompt sudo ovs-vsctl del-manager
+ [Arguments] ${odl_ip}=${ODL_SYSTEM_IP}
+ [Documentation] Open connections to the nodes
+ Get DevStack Nodes Data
+ Create Session session http://${odl_ip}:${RESTCONFPORT} auth=${AUTH} headers=${HEADERS}
+ SSHLibrary.Set Default Configuration timeout=${default_devstack_prompt_timeout}
+ Run Keyword If 0 < ${NUM_OS_SYSTEM} Open Connection OS_CNTL_CONN_ID ${OS_CONTROL_NODE_IP}
+ Run Keyword If 1 < ${NUM_OS_SYSTEM} Open Connection OS_CMP1_CONN_ID ${OS_COMPUTE_1_IP}
+ Run Keyword If 2 < ${NUM_OS_SYSTEM} Open Connection OS_CMP2_CONN_ID ${OS_COMPUTE_2_IP}
Write Commands Until Prompt
[Arguments] ${cmd} ${timeout}=${default_devstack_prompt_timeout}
[Documentation] quick wrapper for Write and Read Until Prompt Keywords to make test cases more readable
SSHLibrary.Set Client Configuration timeout=${timeout}
- SSHLibrary.Write ${cmd}
+ SSHLibrary.Read
+ SSHLibrary.Write ${cmd};echo Command Returns $?
${output}= SSHLibrary.Read Until Prompt
[Return] ${output}
-Get Networking ODL Version Of Release
- [Arguments] ${version}
- [Documentation] Get version of ODL to be installed
- # once Beryllium SR1 goes out, we can change beryllium-latest to use 0.4.2
- Return From Keyword If "${version}" == "beryllium-latest" beryllium-snapshot-0.4.2
- Return From Keyword If "${version}" == "beryllium-SR1" beryllium-snapshot-0.4.1
- Return From Keyword If "${version}" == "beryllium" beryllium-snapshot-0.4.0
- Return From Keyword If "${version}" == "lithium-latest" lithium-snapshot-0.3.5
- Return From Keyword If "${version}" == "lithium-SR4" lithium-snapshot-0.3.4
- Return From Keyword If "${version}" == "lithium-SR3" lithium-snapshot-0.3.3
- Return From Keyword If "${version}" == "lithium-SR2" lithium-snapshot-0.3.2
- Return From Keyword If "${version}" == "lithium-SR1" lithium-snapshot-0.3.1
- # FYI networking-odl no longer has this for some reason.
- Return From Keyword If "${version}" == "lithium" lithium-snapshot-0.3.0
- Return From Keyword If "${version}" == "helium" helium
-
-Show Devstack Debugs
- [Documentation] Collect the devstack logs to debug in case of failure
- Write Commands Until Prompt gunzip /opt/stack/logs/devstacklog.txt.gz
- Write Commands Until Prompt tail -n2000 /opt/stack/logs/devstacklog.txt timeout=600s
- Write Commands Until Prompt grep 'distribution-karaf.*zip' /opt/stack/logs/devstacklog.txt
+Write Commands Until Prompt And Log
+ [Arguments] ${cmd} ${timeout}=${default_devstack_prompt_timeout}
+ [Documentation] quick wrapper for Write and Read Until Prompt Keywords to make test cases more readable
+ ${output} = Write Commands Until Prompt ${cmd} ${timeout}
+ Log ${output}
+ [Return] ${output}
+
+Log Devstack Nodes Data
+ ${output} = BuiltIn.Catenate SEPARATOR=\n OS_CNTL_HOSTNAME: ${OS_CNTL_HOSTNAME} - OS_CNTL_IP: ${OS_CNTL_IP} - OS_CONTROL_NODE_IP: ${OS_CONTROL_NODE_IP} OS_CMP1_HOSTNAME: ${OS_CMP1_HOSTNAME} - OS_CMP1_IP: ${OS_CMP1_IP} - OS_COMPUTE_1_IP: ${OS_COMPUTE_1_IP} OS_CMP2_HOSTNAME: ${OS_CMP2_HOSTNAME} - OS_CMP2_IP: ${OS_CMP2_IP} - OS_COMPUTE_2_IP: ${OS_COMPUTE_2_IP} OS_ALL_IPS: @{OS_ALL_IPS}
+ ... OS_CMP_IPS: @{OS_CMP_IPS}
+ BuiltIn.Log DevStack Nodes Data:\n${output}
+
+Get DevStack Hostnames
+ [Documentation] Assign hostname global variables for DevStack nodes
+ ${OS_CNTL_HOSTNAME} = OpenStackOperations.Get Hypervisor Hostname From IP ${OS_CNTL_IP}
+ ${OS_CMP1_HOSTNAME} = OpenStackOperations.Get Hypervisor Hostname From IP ${OS_CMP1_IP}
+ ${OS_CMP2_HOSTNAME} = OpenStackOperations.Get Hypervisor Hostname From IP ${OS_CMP2_IP}
+ BuiltIn.Set Suite Variable ${OS_CNTL_HOSTNAME}
+ BuiltIn.Set Suite Variable ${OS_CMP1_HOSTNAME}
+ BuiltIn.Set Suite Variable ${OS_CMP2_HOSTNAME}
+
+Set Node Data For AllinOne Setup
+ [Documentation] Assign global variables for DevStack nodes where the Control Node enables Compute service also.
+ BuiltIn.Set Suite Variable @{OS_ALL_IPS} ${OS_CNTL_IP}
+
+Set Node Data For Control And Compute Node Setup
+ [Documentation] Assign global variables for DevStack nodes where the control node is also the compute
+ BuiltIn.Set Suite Variable ${OS_CMP1_IP} ${OS_CNTL_IP}
+ BuiltIn.Set Suite Variable ${OS_CMP2_IP} ${OS_COMPUTE_1_IP}
+ BuiltIn.Set Suite Variable @{OS_ALL_IPS} ${OS_CNTL_IP} ${OS_CMP2_IP}
+ BuiltIn.Set Suite Variable @{OS_CMP_IPS} ${OS_CMP1_IP} ${OS_CMP2_IP}
+
+Set Node Data For Control Only Node Setup
+ [Documentation] Assign global variables for DevStack nodes where the control node is different than the compute
+ BuiltIn.Set Suite Variable ${OS_CMP1_IP} ${OS_COMPUTE_1_IP}
+ BuiltIn.Set Suite Variable ${OS_CMP2_IP} ${OS_COMPUTE_2_IP}
+ BuiltIn.Set Suite Variable @{OS_ALL_IPS} ${OS_CNTL_IP} ${OS_CMP1_IP} ${OS_CMP2_IP}
+ BuiltIn.Set Suite Variable @{OS_CMP_IPS} ${OS_CMP1_IP} ${OS_CMP2_IP}
+
+Get DevStack Nodes Data
+ [Documentation] Assign global variables for DevStack nodes
+ BuiltIn.Set Suite Variable ${OS_CNTL_IP} ${OS_CONTROL_NODE_IP}
+ Run Keyword If ${NUM_OS_SYSTEM} == 1 Set Node Data For AllinOne Setup
+ ... ELSE IF ${NUM_OS_SYSTEM} == 2 Set Node Data For Control And Compute Node Setup
+ ... ELSE IF ${NUM_OS_SYSTEM} == 3 Set Node Data For Control Only Node Setup
+ Get DevStack Hostnames
+ Log Devstack Nodes Data