9. Gaps, Innovation, and Development¶
The purpose of this chapter is to identify the gaps between what is required for automated deployment of VNFs on Cloud Infrastructure frameworks and the framework offered by OpenStack. Once gaps are identified, the next step will be to propose a plan to address these gaps. The most obvious way to address the gaps will be to propose a set of APIs in the upstream OpenStack community
9.1. The Gap¶
9.1.1. Autoscaling¶
With regards to resource autoscaling (gen.scl.01 General Recommendations) it is recommended that the NFVO/VNFM manages the policy and triggers a scale-up or scale-down action based on application telemetry, event, AI, or ML etc. While the use of telemetry and alarming system can trigger a scaling operation based on resource utilisation, without application context this may not provide the granularity or reaction time required by the application. It is therefore suggested that an OpenStack scaling operation is called using an appropriate autoscaling web-hook by the NFVO/VNFM.
For more information on auto-scaling with Heat please see the OpenStack document “Autoscaling with heat [201]”. Please note that the OpenStack Senlin service is still under development with major architectural changes made in the OpenStack Ussuri release.
Please note: physical compute node autoscaling is out of scope.
- 1
 Cloud infrastructure reference model. GSMA PRD NG.126 v3.0, 2022.
- 2
 Openstack documentation. URL: https://docs.openstack.org/.
- 3
 Network functions virtualisation (nfv); infrastructure overview. ETSI GS NFV-INF 001 V1.1.1, January 2015. URL: https://www.etsi.org/deliver/etsi_gs/NFV-INF/001_099/001/01.01.01_60/gs_NFV-INF001v010101p.pdf.
- 4
 Openstack use cases. URL: https://docs.openstack.org/arch-design/use-cases.html.
- 5
 Open vswitch. URL: https://www.openvswitch.org/.
- 6
 OpenStack Community. Openstack wallaby projects. URL: https://docs.openstack.org/wallaby/projects.html.
- 7
 Scott O. Bradner. Key words for use in rfcs to indicate requirement levels. RFC 2119, March 1997. URL: https://www.rfc-editor.org/info/rfc2119, doi:10.17487/RFC2119.
- 8
 H. Philip White. Center for internet security - password policy guide. 2020. URL: https://www.cisecurity.org/insights/white-papers/cis-password-policy-guide.
- 9
 Center for internet security - controls v7.1. URL: https://www.cisecurity.org/controls/cis-controls-list.
- 10
 Openstack - cpu dedicated set. URL: https://docs.openstack.org/nova/latest/configuration/config.html#compute.cpu_dedicated_set.
- 11
 Openstack - cpu topologies. URL: https://docs.openstack.org/nova/latest/admin/cpu-topologies.html.
- 12
 Openstack - neutron plugins and drivers. URL: https://wiki.openstack.org/wiki/Neutron_Plugins_and_Drivers.
- 13
 Openstack - tags. URL: https://specs.openstack.org/openstack/api-wg/guidelines/tags.html.
- 14
 Openstack - configuring the stateful services. URL: https://docs.openstack.org/ha-guide/control-plane-stateful.html.
- 15
 Openstack - senlin documentation. URL: https://docs.openstack.org/senlin/wallaby/.
- 16
 Openstack - neutron ovs agent support for baremetal with smart nic. URL: https://specs.openstack.org/openstack/neutron-specs/specs/stein/neutron-ovs-agent-support-baremetal-with-smart-nic.html.
- 17
 National telecommunications and information administration - software bill of materials. URL: https://www.ntia.gov/SBOM.
- 18
 Center for internet security. URL: https://www.cisecurity.org/.
- 19
 Cloud security alliance. URL: https://cloudsecurityalliance.org/.
- 20
 Open web application security project - cheat sheet series. URL: https://github.com/OWASP/CheatSheetSeries.
- 21
 Open web application security project. URL: https://www.owasp.org.
- 22
 Open web application security project - top ten security risks. URL: https://owasp.org/www-project-top-ten/.
- 23
 Open web application security project - software maturity model (samm). URL: https://owaspsamm.org/blog/2019/12/20/version2-community-release/.
- 24
 Open web application security project - web security testing guide. URL: https://github.com/OWASP/wstg/tree/master/document.
- 25
 Iso (international organization for standardization) and iec (international electrotechnical commission) iso/iec 27001:2013. 2013. URL: https://www.iso.org/obp/ui/#iso:std:iso-iec:27001:ed-2:v1:en.
- 26
 Iso (international organization for standardization) and iec (international electrotechnical commission) iso/iec 27002:2013. 2013. URL: https://www.iso.org/obp/ui/#iso:std:iso-iec:27002:ed-2:v1:en.
- 27
 Iso (international organization for standardization) and iec (international electrotechnical commission) iso/iec 7032:2012. 2012. URL: https://www.iso.org/obp/ui/#iso:std:iso-iec:27032:ed-1:v1:en.
- 28
 Openstack storage. URL: https://docs.openstack.org/arch-design/design-storage/design-storage-concepts.html#table-openstack-storage.
- 29
 Openstack cinder driver support matrix. URL: https://docs.openstack.org/cinder/latest/reference/support-matrix.html.
- 30
 Tungsten fabric - multicloud multistack sdn. URL: https://tungsten.io.
- 31
 Openstack glossary. URL: https://docs.openstack.org/doc-contrib-guide/common/glossary.html.
- 32
 Openstack feature support matrix. URL: https://docs.openstack.org/nova/latest/user/support-matrix.html.
- 33
 Openstack storage architecture design. URL: https://docs.openstack.org/arch-design/design-storage.html.
- 34
 Openstack nova: kvm. URL: https://docs.openstack.org/nova/wallaby/admin/configuration/hypervisor-kvm.html.
- 35
 Openstack - hardening the virtualization layers. URL: https://docs.openstack.org/security-guide/compute/hardening-the-virtualization-layers.html.
- 36
 Openstack reference architecture for 100, 300 and 500 nodes. URL: https://fuel-ccp.readthedocs.io/en/latest/design/ref_arch_100_nodes.html.
- 37
 (dpdk) release notes. URL: http://doc.dpdk.org/guides/rel_notes.
- 38
 (dpdk) performance reports. URL: http://core.dpdk.org/perf-reports/.
- 39
 Robert Moskowitz, Daniel Karrenberg, Yakov Rekhter, Eliot Lear, and Geert Jan de Groot. Address allocation for private internets. RFC 1918, February 1996. URL: https://www.rfc-editor.org/info/rfc1918, doi:10.17487/RFC1918.
- 40
 Openstack - introducing octavia. URL: https://docs.openstack.org/octavia/latest/reference/introduction.html.
- 41
 Openstack octavia (load-balancer service). URL: https://governance.openstack.org/tc/reference/projects/octavia.html.
- 42
 Openstack/neutron-vpnaas. URL: https://opendev.org/openstack/neutron-vpnaas.
- 43
 Openstack neutron: plugins. URL: https://wiki.openstack.org/wiki/Neutron#Plugins.
- 44
 Openstack neutron: api extensions. URL: https://docs.openstack.org/neutron/latest/contributor/internals/api_extensions.html.
- 45
 Openstack networking api v2.0: list extensions. URL: https://docs.openstack.org/api-ref/network/v2/#list-extensions.
- 46
 Openstack networking api v2.0: show extension details. URL: https://docs.openstack.org/api-ref/network/v2/#show-extension-details.
- 47
 Openstack neutron/ml2. URL: https://wiki.openstack.org/wiki/Neutron/ML2.
- 48
 Openstack cinder driver support matrix. URL: https://docs.openstack.org/cinder/latest/reference/support-matrix.html.
- 49
 Openstack (cinder) available drivers. URL: https://docs.openstack.org/cinder/latest/drivers.html.
- 50
 Openstack cinder service configuration. URL: https://docs.openstack.org/cinder/latest/configuration/index.html.
- 51
 Openstack cinder administration. URL: https://docs.openstack.org/cinder/latest/admin/index.html.
- 52
 Ceph - the future of storage. URL: https://ceph.io/en.
- 53
 Keystone, the openstack identity service. URL: https://docs.openstack.org/keystone/wallaby/.
- 54
 Openstack - welcome to glance's documentation! URL: https://docs.openstack.org/glance/wallaby/.
- 55
 Openstack block storage (cinder) documentation. URL: https://docs.openstack.org/cinder/wallaby/.
- 56
 Openstack - welcome to swift's documentation! URL: https://docs.openstack.org/swift/wallaby/.
- 57
 Openstack - welcome to neutron's documentation! URL: https://docs.openstack.org/neutron/wallaby/.
- 58
 Openstack - scenario: high availability using distributed virtual routing (dvr). URL: https://docs.openstack.org/liberty/networking-guide/scenario-dvr-ovs.html.
- 59
 Openstack neutron: distributed virtual routing with vrrp. URL: https://docs.openstack.org/neutron/wallaby/admin/config-dvr-ha-snat.html.
- 60
 Openstack compute (nova). URL: https://docs.openstack.org/nova/wallaby/.
- 61
 Openstack - welcome to ironic's documentation! URL: https://docs.openstack.org/ironic/wallaby/.
- 62
 Openstack ironic api reference: bare metal api. URL: https://docs.openstack.org/api-ref/baremetal/.
- 63
 Openstack - welcome to the heat documentation! URL: https://docs.openstack.org/heat/wallaby/.
- 64
 Horizon: the openstack dashboard project. URL: https://docs.openstack.org/horizon/wallaby/.
- 65
 Openstack - placement. URL: https://docs.openstack.org/placement/wallaby/index.html.
- 66
 Openstack - placement: modeling with provider trees. URL: https://docs.openstack.org/placement/latest/user/provider-tree.html.
- 67
 Openstack - placement usage. URL: https://docs.openstack.org/placement/latest/user/index.html.
- 68
 Openstack key manager (barbican). URL: https://docs.openstack.org/barbican/wallaby/.
- 69
 Openstack accelerator (cyborg). URL: https://docs.openstack.org/cyborg/wallaby/.
- 70
 Openstack compute api guide 2.1.0: server concepts. URL: https://docs.openstack.org/api-guide/compute/server_concepts.html.
- 71
 Openstack cyborg support matrix (wallaby). URL: https://docs.openstack.org/cyborg/wallaby/reference/support-matrix.html.
- 72
 Openstack cyborg support matrix. URL: https://docs.openstack.org/cyborg/latest/reference/support-matrix.html.
- 73
 Openstack cyborg architecture. URL: https://docs.openstack.org/cyborg/latest/user/architecture.html.
- 74
 Openstack nova: flavors. URL: https://docs.openstack.org/nova/latest/user/flavors.html.
- 75
 Open glossary of edge computing. URL: https://github.com/State-of-the-Edge/glossary/blob/master/edge-glossary.md.
- 76
 Openstack - edge computing: next steps in architecture, design and testing. URL: https://www.openstack.org/use-cases/edge-computing/edge-computing-next-steps-in-architecture-design-and-testing.
- 77
 Openstack reference architecture for 100, 300 and 500 nodes: services placement summary. URL: https://fuel-ccp.readthedocs.io/en/latest/design/ref_arch_100_nodes.html#services-placement-summary.
- 78
 Openstack nova: image pre-caching. URL: https://docs.openstack.org/nova/latest/admin/image-caching.html#image-pre-caching.
- 79
 Airship v2. URL: https://www.airshipit.org/.
- 80
 Starlingx - deploy your edge cloud now. URL: https://www.starlingx.io/.
- 81
 Openstack tripleo. URL: http://opendev.org/openstack/tripleo-common.
- 82
 Openstack compute microversions. URL: https://docs.openstack.org/api-guide/compute/microversions.html.
- 83
 Identity api v3. URL: https://docs.openstack.org/api-ref/identity/v3/index.html.
- 84
 Identity api v3 extensions. URL: https://docs.openstack.org/api-ref/identity/v3-ext/.
- 85
 Security compliance and pci-dss. URL: https://docs.openstack.org/keystone/wallaby/admin/configuration.html#security-compliance-and-pci-dss.
- 86
 Image service api. URL: https://docs.openstack.org/api-ref/image/v2/.
- 87
 Image service versions. URL: https://docs.openstack.org/api-ref/image/versions/index.html#version-history.
- 88
 Block storage api. URL: https://docs.openstack.org/api-ref/block-storage/.
- 89
 Cinder rest api version history. URL: https://docs.openstack.org/cinder/latest/contributor/api_microversion_history.html.
- 90
 Object storage api. URL: https://docs.openstack.org/api-ref/object-store/index.html.
- 91
 Discoverability. URL: https://docs.openstack.org/swift/latest/api/discoverability.html.
- 92
 Networking service apis. URL: https://docs.openstack.org/api-ref/network/.
- 93
 Networking api v2.0. URL: https://docs.openstack.org/api-ref/network/v2/.
- 94
 Compute api. URL: https://docs.openstack.org/api-ref/compute/.
- 95
 Compute rest api version history. URL: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html.
- 96
 Placement api. URL: https://docs.openstack.org/api-ref/placement/.
- 97
 Placement rest api version history. URL: https://docs.openstack.org/placement/latest/placement-api-microversion-history.html.
- 98
 Orchestration service api. URL: https://docs.openstack.org/api-ref/orchestration/.
- 99
 Template version history. URL: https://docs.openstack.org/heat/latest/template_guide/hot_spec.html.
- 100
 Heat orchestration template (hot) specification. URL: https://docs.openstack.org/heat/latest/template_guide/hot_spec.html#rocky.
- 101
 Openstack apis. URL: https://docs.openstack.org/api-ref/.
- 102
 Kubernetes apis. URL: https://kubernetes.io/docs/concepts/overview/kubernetes-api/.
- 103
 Kvm apis. URL: https://www.kernel.org/doc/Documentation/virtual/kvm/api.txt.
- 104
 Libvirt apis. URL: https://libvirt.org/html/index.html.
- 105
 Barbican api. URL: https://docs.openstack.org/barbican/latest/api/.
- 106
 Openstack - security boundaries and threats. URL: https://docs.openstack.org/security-guide/introduction/security-boundaries-and-threats.html.
- 107
 Openstack security guide. URL: https://docs.openstack.org/security-guide/introduction/introduction-to-openstack.html.
- 108
 Mitre - common vulnerabilities and exposures. URL: https://cve.mitre.org/.
- 109
 National institute of standards and technology vulnerabilities metrics. URL: https://nvd.nist.gov/vuln-metrics/cvss.
- 110
 Openstack security guide - identity. URL: https://docs.openstack.org/security-guide/identity.html.
- 111
 Openstack security guide - authentication methods. URL: https://docs.openstack.org/security-guide/identity/authentication-methods.html.
- 112
 Openstack security guide - policies. URL: https://docs.openstack.org/security-guide/identity/policies.html#policy-section.
- 113
 Openstack keystone default roles. URL: https://docs.openstack.org/keystone/latest/admin/service-api-protection.html.
- 114
 Openstack - introduction to tls and ssl. URL: https://docs.openstack.org/security-guide/secure-communication/introduction-to-ssl-and-tls.html.
- 115
 Center for internet security cis-cat pro. URL: https://www.cisecurity.org/cybersecurity-tools/cis-cat-pro/.
- 116
 Center for internet security benchmarks. URL: https://www.cisecurity.org/cis-benchmarks/.
- 117
 Openstack image signature verification. URL: https://docs.openstack.org/glance/wallaby/user/signature.html.
- 118
 Openstack - sr-iov passthrough for networking. URL: https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking.
- 119
 Openstack trusted images. URL: https://docs.openstack.org/security-guide/instance-management/security-services-for-instances.html#trusted-images.
- 120
 Adding signed images. URL: https://docs.openstack.org/operations-guide/ops-user-facing-operations.html#adding-signed-images.
- 121
 Network functions virtualisation (nfv) release 4; protocols and data models; vnf package and pnfd archive specification. ETSI GS NFV-SOL 004 V4.3.1, July 2022. URL: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/004/04.03.01_60/gs_NFV-SOL004v040301p.pdf.
- 122
 Network functions virtualisation (nfv) release 2; security; vnf package security specification. ETSI GS NFV-SEC 021 V2.6.1, June 2019. URL: https://www.etsi.org/deliver/etsi_gs/NFV-SEC/001_099/021/02.06.01_60/gs_nfv-sec021v020601p.pdf.
- 123
 Foreman. URL: https://www.theforeman.org/.
- 124
 Ansible documentation. URL: https://docs.ansible.com/.
- 125
 Openstack tripleo architecture. URL: https://docs.openstack.org/tripleo-docs/latest/install/introduction/architecture.html#project-architecture.
- 126
 Ovp. URL: https://www.opnfv.org/verification.
- 127
 Jenkins. URL: https://build.opnfv.org/.
- 128
 Test dabase. URL: https://docs.opnfv.org/en/stable-hunter/_images/OPNFV_testing_working_group.png.
- 129
 S3 compatible storage service. URL: http://artifacts.opnfv.org/.
- 130
 Functest-wallaby-zip. URL: https://build.opnfv.org/ci/job/functest-wallaby-zip/4/console.
- 131
 Xtesting ci. URL: https://galaxy.ansible.com/collivier/xtesting.
- 132
 Docker. URL: https://www.docker.com/.
- 133
 Xtesting. URL: https://xtesting.readthedocs.io/en/latest/.
- 134
 Opnfv fraser. URL: https://www.sdxcentral.com/articles/news/opnfvs-6th-release-brings-testing-capabilities-that-orange-is-already-using/2018/05/.
- 135
 Xtesting python package. URL: https://pypi.org/project/xtesting/.
- 136
 Test case execution description. URL: https://git.opnfv.org/functest-xtesting/tree/docker/core/testcases.yaml.
- 137
 Ci/cd toolchains in a few commands. URL: https://github.com/collivier/ansible-role-xtesting#readme.
- 138
 Ci/cd deployment models. URL: https://lists.opnfv.org/g/opnfv-tsc/message/5702.
- 139
 Anuket releng. URL: https://git.opnfv.org/releng/tree/jjb/functest.
- 140
 Test case result dump. URL: http://artifacts.opnfv.org/functest/9ID39XK47PMZ.zip.
- 141
 Xtesting samples. URL: https://git.opnfv.org/functest-xtesting/plain/ansible/site.yml?h=stable/wallaby.
- 142
 Openstack verification. URL: https://git.opnfv.org/functest/plain/ansible/site.yml?h=stable/wallaby.
- 143
 Anuket rc1. URL: https://git.opnfv.org/functest/plain/ansible/site.cntt.yml?h=stable/wallaby.
- 144
 Kubernetes verification. URL: https://git.opnfv.org/functest-kubernetes/plain/ansible/site.yml?h=stable/v1.22.
- 145
 Functest. URL: https://functest.readthedocs.io/en/stable-wallaby/.
- 146
 Refstack. URL: https://refstack.openstack.org/.
- 147
 Networking bgpvpn. URL: https://docs.openstack.org/networking-bgpvpn/latest/.
- 148
 Networking sfc. URL: https://docs.openstack.org/networking-sfc/latest/.
- 149
 Devstack gates. URL: https://docs.opendev.org/opendev/system-config/latest/devstack-gate.html.
- 150
 Rally. URL: https://github.com/openstack/rally-openstack.
- 151
 Temptest. URL: https://github.com/openstack/tempest.
- 152
 Temptest. URL: https://docs.openstack.org/devstack/latest/.
- 153
 Raspberry pi. URL: https://www.raspberrypi.org/.
- 154
 Functest daily jobs. URL: https://build.opnfv.org/ci/view/functest/job/functest-wallaby-daily/17/.
- 155
 Openstack performance tools. URL: https://docs.openstack.org/developer/performance-docs/methodologies/tools.html.
- 156
 Run alpine functest containers (wallaby). URL: https://wiki.anuket.io/display/HOME/Functest+Wallaby.
- 157
 Functest gates. URL: https://build.opnfv.org/ci/view/functest.
- 158
 New functest cntt containers. URL: https://lists.opnfv.org/g/opnfv-tsc/message/5717.
- 159
 Keystone-tempest-plugin. URL: https://opendev.org/openstack/keystone-tempest-plugin.
- 160
 Functest smoke cntt. URL: https://git.opnfv.org/functest/tree/docker/smoke-cntt/testcases.yaml?h=stable%2Fwallaby.
- 161
 Cinder-tempest-plugin. URL: https://opendev.org/openstack/cinder-tempest-plugin.
- 162
 Functest review 68881. URL: https://gerrit.opnfv.org/gerrit/68881.
- 163
 Functest review 71011. URL: https://gerrit.opnfv.org/gerrit/71011.
- 164
 Openstack bug 1770179. URL: https://launchpad.net/bugs/1770179.
- 165
 Openstack bug 1677525. URL: https://launchpad.net/bugs/1677525.
- 166
 Openstack bug 1317133. URL: https://launchpad.net/bugs/1317133.
- 167
 Openstack bug 1905432. URL: https://launchpad.net/bugs/1905432.
- 168
 Neutron-tempest-plugin. URL: https://opendev.org/openstack/neutron-tempest-plugin.
- 169
 Openstack bug 1863707. URL: https://launchpad.net/bugs/1863707.
- 170
 Functest review 69105. URL: https://gerrit.opnfv.org/gerrit/69105.
- 171
 Openstack bug 1676207. URL: https://launchpad.net/bugs/1676207.
- 172
 Openstack bug 1836595. URL: https://launchpad.net/bugs/1836595.
- 173
 Openstack bug 1186354. URL: https://launchpad.net/bugs/1186354.
- 174
 Openstack bug 1014647. URL: https://launchpad.net/bugs/1014647.
- 175
 Openstack bug 1311500. URL: https://launchpad.net/bugs/1311500.
- 176
 Openstack bug 1161411. URL: https://launchpad.net/bugs/1161411.
- 177
 Openstack bug 1540645. URL: https://launchpad.net/bugs/1540645.
- 178
 Heat-tempest-plugin. URL: https://opendev.org/openstack/heat-tempest-plugin.
- 179
 Openstack story 2007804. URL: https://storyboard.openstack.org/#!/story/2007804.
- 180
 Functest review 69926. URL: https://gerrit.opnfv.org/gerrit/69926.
- 181
 Functest review 69931. URL: https://gerrit.opnfv.org/gerrit/69931.
- 182
 Functest review 70004. URL: https://gerrit.opnfv.org/gerrit/70004.
- 183
 Tempest-horizon. URL: https://github.com/openstack/tempest-horizon.
- 184
 Functest healthcheck. URL: https://git.opnfv.org/functest/tree/docker/healthcheck/testcases.yaml?h=stable%2Fwallaby.
- 185
 Functest benchmarking cntt. URL: https://git.opnfv.org/functest/tree/docker/benchmarking-cntt/testcases.yaml?h=stable%2Fwallaby.
- 186
 Rally_full_cntt. URL: http://artifacts.opnfv.org/functest/KDBNITEN317M/functest-opnfv-functest-benchmarking-cntt-wallaby-rally_full_cntt-run-5/rally_full_cntt/rally_full_cntt.html.
- 187
 Rally_jobs_cntt. URL: http://artifacts.opnfv.org/functest/KDBNITEN317M/functest-opnfv-functest-benchmarking-cntt-wallaby-rally_jobs_cntt-run-5/rally_jobs_cntt/rally_jobs_cntt.html.
- 188
 Vmtp. URL: http://vmtp.readthedocs.io/en/latest.
- 189
 Shaker. URL: https://pyshaker.readthedocs.io/en/latest/.
- 190
 Vmtp scenarios. URL: http://artifacts.opnfv.org/functest/KDBNITEN317M/functest-opnfv-functest-benchmarking-wallaby-vmtp-run-8/vmtp/vmtp.json.
- 191
 Functest vmtp. URL: http://artifacts.opnfv.org/functest/KDBNITEN317M/functest-opnfv-functest-benchmarking-wallaby-vmtp-run-8/vmtp/vmtp.html.
- 192
 Shaker scenarios. URL: http://artifacts.opnfv.org/functest/KDBNITEN317M/functest-opnfv-functest-benchmarking-wallaby-shaker-run-8/shaker/report.json.
- 193
 Functest vnf. URL: https://git.opnfv.org/functest/tree/docker/vnf/testcases.yaml?h=stable%2Fwallaby.
- 194
 Clearwater ims. URL: https://clearwater.readthedocs.io/en/stable/.
- 195
 Vyos vrouter. URL: https://www.vyos.io/.
- 196
 Openairinterface vepc. URL: https://www.openairinterface.org/.
- 197
 Cloudify. URL: https://cloudify.co.
- 198
 Juju. URL: https://jaas.ai/.
- 199
 Clearwater-live-test. URL: https://github.com/Metaswitch/clearwater-live-test.
- 200
 Docker http/https proxy. URL: https://docs.docker.com/config/daemon/systemd/#httphttps-proxy.
- 201
 Openstack autoscaling with heat. URL: https://docs.openstack.org/senlin/latest/scenarios/autoscaling_heat.html.