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Oracle ZFS Storage Appliance 2017 Implementation Essentials












Oracle ZFS Storage Appliance 2017 Implementation Essentials questions
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7.2 OpenStack

This chapter is from the book 

A structured implementation of a non-public cloud would benefit from neatly-defined features, that are consumed by way of the digital environments that self-provider clients deploy. One well-known implementation of these services, along with the management equipment necessary to install and use a non-public cloud, is OpenStack. right here subsections describe OpenStack in short, after which talk about the integration of Oracle Solaris and OpenStack.

7.2.1 what is OpenStack?

OpenStack is a community-based mostly open-source undertaking to form a finished management layer to create and control private clouds. This assignment was first undertaken as a joint effort of Rackspace and NASA in 2010, but is now driven by means of the OpenStack groundwork. seeing that 2010, OpenStack has been the fastest-growing open-source venture on a worldwide groundwork, with hundreds of commercial and individual contributors spread throughout the globe. The group launches two OpenStack releases per year.

OpenStack can be regarded an working device for cloud environments. It provides the foundation for Infrastructure as a provider (IaaS) clouds. Some new modules add points required in Platform as a provider (PaaS) clouds. OpenStack should still now not be considered as layered application, although, however somewhat as an integrated infrastructure element. accordingly, youngsters the OpenStack neighborhood launches OpenStack releases, infrastructure carriers must integrate the open-supply components into their own systems to bring the OpenStack performance. several working system, network, and storage providers offer OpenStack-enabled products.

OpenStack abstracts compute, network, and storage elements for the user, with these supplies being exposed via an internet portal with a single management pane. This integrated strategy allows directors to conveniently manage a number of storage contraptions and hypervisors. The cloud functions are in keeping with a sequence of OpenStack modules, which communicate via a defined RESTful API between the a considerable number of modules.

If a dealer plans to offer guide for certain OpenStack services in its products, it need to implement the performance of those services and provide entry to the performance throughout the rest APIs. This may also be done by using delivering a service plugin, really expert for the product, that fills the hole between the rest API definition and the latest product characteristic.

7.2.2 The OpenStack time-honored structure

figure 7.3 depicts the well-known architecture of an OpenStack deployment. It consists of capabilities supplied via the OpenStack framework, and compute nodes that consume these features. This area describes those capabilities.

a number of OpenStack features are used to kind an OpenStack-based mostly private cloud. The capabilities are interconnected by means of the rest APIs and depend upon every other. however not all features are at all times needed to form a cloud, however, and never every supplier promises all capabilities. Some features have a unique purpose and are configured simplest when appropriate; others are at all times vital when developing a personal cloud.

on account of the obviously described relaxation APIs, services are extensible. right here checklist summarizes the core service modules.

  • Cinder (block storage): gives block storage for OpenStack compute situations and manages the advent, attaching, and detaching of block instruments to OpenStack situations.

  • glance (photos): provides discovery, registration, and birth capabilities for disk and server photos. The saved photos will also be used as templates for the deployment of VEs.

  • heat (orchestration): makes it possible for the orchestration of complete utility stacks, in line with heat templates.

  • Horizon (dashboard): offers the dashboard management device to access and provision cloud-primarily based elements from a browser-based mostly interface.

  • Ironic (naked-steel provisioning): Used to provision bare-steel OpenStack visitors, akin to actual nodes.

  • Keystone (authentication and authorization): offers authentication and excessive-level authorization for the cloud and between cloud functions. It carries a significant directory of users mapped to those cloud features they can access.

  • Manila (shared file system): permits the OpenStack cases to access shared file programs within the cloud.

  • Neutron (community): Manages utility-described community capabilities equivalent to networks, routers, switches, and IP addresses to support multitenancy.

  • Nova (compute): The basic service that offers the provisioning of digital compute environments according to consumer requirement and available supplies.

  • Swift (object storage): A redundant and scalable storage device, with objects and data stored and managed on disk drives throughout dissimilar servers.

  • Trove (database as a service): allows clients to quickly provision and manage varied database instances without the burden of handling complex administrative initiatives.

  • 7.2.3 Oracle Solaris and OpenStack

    Oracle Solaris eleven includes a full distribution of OpenStack as a standard, supported a part of the platform. the first such unlock became Oracle Solaris eleven.2, which built-in the Havana OpenStack unencumber. The Juno liberate was integrated into Oracle Solaris 11.2 support Repository update (SRU) 6. In Solaris eleven.three SRU 9, the integrated OpenStack utility was up-to-date to the Kilo liberate.

    OpenStack services have been tightly integrated into the know-how foundations of Oracle Solaris. the integration of OpenStack and Solaris leveraged many new Solaris elements that had been designed particularly for cloud environments. one of the most Solaris facets integrated into OpenStack include:

  • Solaris Zones driver integration with Nova to install Oracle Solaris Zones and Solaris Kernel Zones

  • Neutron driver integration with Oracle Solaris community virtualization, together with Elastic digital change

  • Cinder driver integration with the ZFS file gadget

  • Unified Archives integration with glance photograph administration and warmth orchestration

  • naked-metallic provisioning implementation using the Oracle Solaris automated Installer (AI)

  • determine 7.4 shows the OpenStack functions applied in Oracle Solaris and the linked helping Oracle Solaris aspects.

    All features have been integrated into the Solaris carrier management Framework (SMF) to make sure carrier reliability, automatic carrier restart, and node dependency management. SMF properties enable additional configuration alternatives. Oracle Solaris function-based access control (RBAC) ensures that the OpenStack features, represented by their corresponding SMF functions, run with minimal privileges.

    The OpenStack modules are delivered in separate Oracle Solaris packages, as shown in this illustration generated in Solaris 11.three:

    # pkg listing -af | grep openstack cloud/openstack 0.2015.2.2-0.175.three.9.0.2.0 i-- cloud/openstack/cinder 0.2015.2.2-0.a hundred seventy five.three.9.0.2.0 i-- cloud/openstack/glance 0.2015.2.2-0.175.three.9.0.2.0 i-- cloud/openstack/heat 0.2015.2.2-0.a hundred seventy five.3.9.0.2.0 i-- cloud/openstack/horizon 0.2015.2.2-0.175.3.9.0.2.0 i-- cloud/openstack/ironic 0.2015.2.1-0.one hundred seventy five.three.9.0.2.0 i-- cloud/openstack/keystone 0.2015.2.2-0.one hundred seventy five.3.9.0.2.0 i-- cloud/openstack/neutron 0.2015.2.2-0.175.3.9.0.2.0 i-- cloud/openstack/nova 0.2015.2.2-0.175.three.9.0.2.0 i-- cloud/openstack/openstack-commonplace 0.2015.2.2-0.one hundred seventy five.3.9.0.2.0 i-- cloud/openstack/swift 2.3.2-0.175.3.9.0.2.0 i--

    To without problems deploy the entire OpenStack distribution on a system, the cloud/openstack group package could be put in. It instantly installs the entire based OpenStack modules and libraries, plus extra programs equivalent to rad, rabbitmq, and mysql.

    the combination of OpenStack with the Solaris graphic Packaging device (IPS) greatly simplifies updates of OpenStack on a cloud node, through the use of full equipment dependency checking and rollback. This was completed via integration with ZFS boot environments. through a single replace mechanism, an administrator can simply apply the latest utility fixes to a gadget, including the virtual environments.

    7.2.4 Compute Virtualization with Solaris Zones and Solaris Kernel Zones

    Oracle Solaris Zones and Oracle Solaris Kernel Zones are used for OpenStack compute functionality. They give extraordinary environments for application workloads and are quick and simple to provision in a cloud ambiance.

    The existence cycle of Solaris Zones as compute instances in an OpenStack cloud is controlled by way of the Solaris Nova driver for Solaris Zones. The situations are deployed by using the Nova command-line interface or by using the Horizon dashboard. To launch an example, the cloud consumer selects a flavor, a look image, and a Neutron community. Figures 7.5 and 7.6 exhibit the flavors available with Oracle Solaris OpenStack and the launch reveal for an OpenStack illustration.

    Figure 7.6

    figure 7.6 OpenStack instance Launch reveal

    Oracle Solaris alternatives specify the advent of a Solaris native zone or a Solaris kernel zone. those special homes are assigned as extra_specs, that are typically set throughout the command line. The property’s keys incorporate a group of zone residences which are customarily configured with the zonecfg command and which are supported in OpenStack.

    right here keys are supported in both kernel zones and non-international zone flavors:

  • zonecfg:bootargs

  • zonecfg:company

  • zonecfg:hostid

  • zonecfg:cpu-arch

  • right here keys are supported simplest in non-global zone flavors:

  • zonecfg:file-mac-profile

  • zonecfg:fs-allowed

  • zonecfg:limitpriv

  • The listing of latest flavors can also be displayed on the command line:

    +----+-----------------------------------------+-----------------------------------+ | identification | name | extra_specs | +----+-----------------------------------------+-----------------------------------+ | 1 | Oracle Solaris kernel zone - tiny | u'zonecfg:manufacturer': u'solaris-kz' | | 10 | Oracle Solaris non-global zone - xlarge | u'zonecfg:company': u'solaris' | | 2 | Oracle Solaris kernel zone - small | u'zonecfg:brand': u'solaris-kz' | | 3 | Oracle Solaris kernel zone - medium | u'zonecfg:manufacturer': u'solaris-kz' | | four | Oracle Solaris kernel zone - big | u'zonecfg:brand': u'solaris-kz' | | 5 | Oracle Solaris kernel zone - xlarge | u'zonecfg:brand': u'solaris-kz' | | 6 | Oracle Solaris non-world zone - tiny | u'zonecfg:company': u'solaris' | | 7 | Oracle Solaris non-world zone - small | u'zonecfg:brand': u'solaris' | | eight | Oracle Solaris non-global zone - medium | u'zonecfg:manufacturer': u'solaris' | | 9 | Oracle Solaris non-world zone - giant | u'zonecfg:company': u'solaris' |

    The sc_profile key can be modified most effective from the command line. This secret's used to specify a system configuration profile for the flavor—as an instance, to preassign DNS or other equipment configurations to every flavor. as an example, the following command will set a specific device configuration file for a flavor within the prior to now given checklist (i.e., “Oracle Solaris kernel zone – significant”):

    $ nova taste-key 4 set sc_profile=/system/risky/profile/sc_profile.xml

    Launching an instance initiates the following movements in an OpenStack atmosphere:

  • The Nova scheduler selects a compute node in the cloud, in line with the chosen taste, that meets the hypervisor category, structure, variety of VCPUs, and RAM requirements.

  • On the chosen compute node, the Solaris Nova implementation will send a request to Cinder to discover appropriate storage within the cloud that can be used for the new instance’s root file system. It then triggers the introduction of a volume in that storage. additionally, Nova obtains networking assistance and a community port in the chosen community for an instance, by using speaking with the Neutron provider.

  • The Cinder volume service delegates the quantity introduction to the storage equipment, receives the linked Storage Unified useful resource Identifier (SURI), and communicates that SURI again to the selected compute node. typically this volume will reside on a distinct system from the compute node and will be accessed by means of the example the usage of shared storage corresponding to FibreChannel, iSCSI, or NFS.

  • The Neutron provider assigns a Neutron network port to the example, in response to the cloud networking configuration. All situations instantiated by way of the compute service use an exclusive IP stack instance. each and every illustration includes an anet useful resource with its configure-allowed-handle property set to false, and its evs and vport properties set to UUIDs offered by means of Neutron that represent a specific virtualized change phase and port.

  • After the Solaris Zone and OpenStack components have been configured, the zone is put in and booted, in accordance with the assigned look image. This makes use of Solaris Unified Archives.

  • here example suggests a Solaris Zones configuration file, created by way of OpenStack for an iSCSI Cinder quantity as boot volume:

    compute-node # zonecfg -z illustration-00000008 datazonename: example-00000008 company: solaris tenant: 740885068ed745c492e55c9e1c688472 anet: linkname: net0 configure-allowed-tackle: false evs: a6365a98-7be1-42ec-88af-b84fa151b5a0 vport: 8292e26a-5063-4bbb-87aa-7f3d51ff75c0 rootzpool: storage: iscsi://st01-sn:3260/target.iqn.1986-03.com.sun:02:... capped-cpu: [ncpus: 1.00] capped-memory: [swap: 1G] rctl: identify: zone.cpu-cap value: (priv=privileged,restrict=a hundred,action=deny) rctl: identify: zone.max-swap cost: (priv=privileged,restrict=1073741824,action=deny) 7.2.5 Cloud Networking with Elastic virtual swap

    OpenStack networking creates digital networks that interconnect VEs instantiated with the aid of the OpenStack compute node (Nova). It additionally connects these VEs to network services within the cloud, comparable to DHCP and routing. Neutron gives APIs to create and use diverse networks and to assign distinct VEs to networks, which are themselves assigned to diverse tenants. each community tenant is represented within the community layer by way of an remoted Layer 2 network phase—akin to VLANs in actual networks. figure 7.7 shows the relationships among these accessories.

    Subnets are properties that are assigned tons like blocks of IPv4 or IPv6 addresses—it really is, default-router or nameserver. Neutron creates ports in these subnets and assigns them at the side of a number of properties to digital machines. The L3-router performance of Neutron interconnects tenant networks to external networks and makes it possible for VEs to entry the cyber web through source NAT. Floating IP addresses create a static one-to-one mapping from a public IP handle on the external community to a personal IP handle in the cloud, assigned to at least one VE.

    Oracle Solaris Zones and Oracle Solaris Kernel Zones, as OpenStack cases, use the Solaris VNIC expertise to connect to the tenant networks. All VNICs are sure with digital community switches to physical network interfaces. If multiple tenants use one actual interface, then assorted digital switches are created above that physical interface.

    If varied compute nodes were deployed in one cloud and varied tenants are used, virtual switches from the equal tenant are unfold over numerous compute nodes, as proven in determine 7.eight.

    A technology is required to manage these allotted switches as one change. The digital networks may also be created with the aid of, as an example, VXLAN or VLAN. within the case of Oracle Solaris, the Solaris Elastic virtual switch (EVS) feature is used to control the distributed virtual switches. The again-end to OpenStack makes use of a Neutron plugin.

    ultimately, EVS is managed with the aid of a Neutron plugin in order that it presents an API to the cloud. In each and every compute node, the virtual switches are controlled with the aid of an EVS plugin to kind a distributed switch for diverse tenants.

    7.2.6 Cloud Storage with ZFS and COMSTAR

    The OpenStack Cinder carrier offers critical administration for block storage volumes as boot storage and for application records. To create a volume, the Cinder scheduler selects a storage returned-end, in response to storage dimension and storage class necessities, and the Cinder quantity provider controls the quantity introduction. The Cinder API then sends the essential access tips returned to the cloud.

    different types of storage will also be used to give storage to the cloud, similar to FibreChannel, iSCSI, NFS, or the local disks of the compute nodes. The classification used depends on the storage necessities. These requirements include characteristics corresponding to ability, throughput, latency and availability, and necessities for native storage or shared storage. Shared storage is required if migration of OpenStack circumstances between compute nodes is required. native storage might also regularly be sufficient for short-term, ephemeral facts. The cloud consumer is not privy to the storage expertise that has been chosen, since the Cinder quantity carrier represents the storage with ease as a type of storage, now not as a selected storage product model.

    The Cinder extent provider is configured to make use of an OpenStack storage plugin, which is aware of the specifics of a storage device. instance features consist of the formula to create a Cinder quantity, and a method to entry the facts.

    distinctive Cinder storage plugins can be found for Oracle Solaris, that are in response to ZFS to supply volumes to the OpenStack cases:

  • The ZFSVolumeDriver supports the introduction of local volumes for use by means of Nova on the identical node as the Cinder volume service. This components is customarily utilized when the usage of the native disks in compute nodes.

  • The ZFSISCSIDriver and the ZFSFCDriver support the introduction and export of iSCSI and FC goals, respectively, to be used by using far flung Nova compute nodes. COMSTAR allows for any Oracle Solaris host to turn into a storage server, serving block storage by means of iSCSI or FC.

  • The ZFSSAISCSIDriver helps the advent and export of iSCSI ambitions from a far flung Oracle ZFS Storage equipment for use by means of far flung Nova compute nodes.

  • additionally, different storage plugins will also be configured in the Cinder extent provider, if the storage seller has provided the applicable Cinder storage plugin. for instance, the OracleFSFibreChannelDriver permits Oracle FS1 storage for use in OpenStack clouds to give FibreChannel volumes.

    7.2.7 pattern Deployment alternate options

    The functional enablement of Oracle Solaris for OpenStack is in accordance with two leading precepts. the primary aspect is the provision and support of the OpenStack API with a lot of application libraries and plugins in Oracle Solaris. The 2d aspect is the advent and integration of OpenStack plugins to permit specific Oracle Solaris features in OpenStack. As mentioned earlier, those plugins had been developed and provided for Cinder, Neutron, and Nova, in addition to for Ironic.

    Deploying an OpenStack-based deepest cloud with OpenStack for Oracle Solaris is similar to the setup of different OpenStack-based systems.

  • The design and setup of the hardware platform (server techniques, network and storage) for the cloud are very crucial. cautious design can pay off all the way through the configuration and construction phases for the cloud.

  • Oracle Solaris must be installed on the server techniques. The installing of Oracle Solaris OpenStack packages can take place with setting up of Solaris—a method that can also be automatic with the Solaris automated Installer.

  • After selecting between the storage alternatives, the storage node is installed and built-in into the cloud.

  • The a variety of OpenStack modules must be configured with their configuration data, yielding a full purposeful IaaS inner most cloud with OpenStack. The OpenStack configuration files are located in the /etc/[cinder, neutron, nova, ..] directories. The final step is the activation of the connected SMF functions with their dependencies.

  • The design of the hardware platform is also very important. anyway OpenStack, a standard cloud structure to be managed by way of OpenStack comprises these required ingredients:

  • One or distinct compute nodes for the workload.

  • A cloud network to host the logical network inner to the cloud. those networks hyperlink collectively community ports of the cases, which together form one network broadcast area. This inside logical network is typically composed with VxLAN or tagged VLAN know-how.

  • Storage substances to boot the OpenStack instances and keep software statistics persistent.

  • A storage community, if shared storage is used, to connect the shared storage with the compute nodes.

  • An interior manage network, used by the OpenStack API’s interior messages and to drive the compute, network, and storage constituents of the cloud; this network can also be used to control, install, and computer screen all cloud nodes.

  • A cloud manage part, which runs the a variety of OpenStack manage capabilities for the OpenStack cloud just like the Cinder and Nova scheduler, the Cinder extent provider, the MySQL management database, or the RabbitMQ messaging service.

  • figure 7.9 indicates a time-honored OpenStack cloud, in line with a multinode structure with assorted compute nodes, shared storage, remoted networks and managed cloud entry via a centralized community node.

    7.2.8 Single-device Prototype atmosphere

    which you could demonstrate an OpenStack atmosphere in a single system. during this case, a single network is used, or multiple networks are created the usage of etherstubs, to kind the inside community of the cloud. “Compute nodes” can then be instantiated as kernel zones. despite the fact, in case you use kernel zones as compute nodes, then OpenStack circumstances will also be simplest non-global zones. This choice does not enable application of several facets, together with Nova migration. This single-node setup can be carried out very with ease with Oracle Solaris, the use of a Unified Archive of a comprehensive OpenStack installing.

    Such single-gadget setups are typically implemented so that users can turn into familiar with OpenStack or to create very small prototypes. almost all production deployments will use varied computers to achieve the availability goals of a cloud.

    there is one exception to this tenet: A SPARC gadget operating Oracle Solaris (e.g., SPARC T7-four) can also be configured as a multinode atmosphere, the use of diverse logical domains, connected with inner digital networks. The result remains a single actual system, which contains distinctive isolated Solaris cases, however is represented like a multinode cloud.

    7.2.9 elementary Multinode environment

    creating a multinode OpenStack cloud increases the choices obtainable in all components of the ordinary cloud structure. The architect makes the determination between one unified network or separate networks when making a choice on the design for the cloud community, the inner network, and the storage network. then again, these networks could not be single networks, but rather networks with redundancy features similar to IPMP, DLMP, LACP, or MPXIO. All of these applied sciences are part of Oracle Solaris and can be chosen to create the network structure of the cloud.

    a further essential decision to be made is the way to join the cloud to the public or corporate community. The ordinary structure described previous suggests a controlled cloud access via a centralized community node. while this setup enforces centralized entry to the cloud by the use of a community node, it could possibly additionally result in complicated availability or throughput obstacles. An alternative setup is a flat cloud, proven in figure 7.10, by which the compute nodes are at once linked to the general public community, so that no single entry element limits throughput or availability. it's the responsibility of the cloud architect to make a decision which option is the most acceptable choice.

    For the compute nodes, the choice can also be made between SPARC nodes (SPARC T5, T7, S7, M7, or M10 servers), x86_64 nodes, or a combined-node cloud that combines each architectures. Oracle Solaris OpenStack will address both processor architectures in one cloud. typically, compute nodes with 1 or 2 sockets with medium reminiscence ability (512 GB) are chosen. greater commonly, through the use of SPARC systems, compute nodes starting from very small to very giant in measurement will also be mixed in one cloud without any particular configuration efforts.

    The cloud storage is customarily shared storage. In a shared storage architecture, disks storing the running instances are located outdoor the compute nodes. Cloud cases can then be readily recovered with migration or evacuation, in case of compute node downtime. using shared storage is operationally fundamental as a result of having separate compute hosts and storage makes the compute nodes “stateless.” therefore, if there aren't any circumstances running on a compute node, that node may also be taken offline and its contents erased absolutely with out affecting the remaining parts of the cloud. This type of storage may also be scaled to any quantity of storage. Storage selections can be made according to efficiency, cost, and availability. among the many decisions are an Oracle ZFS storage equipment, shared storage via a Solaris node as iSCSI or FC target server, or shared storage via a FibreChannel SAN storage system.

    to make use of local storage, each compute node’s interior disks save all records of the instances that the node hosts. Direct entry to disks is very cost-effective, because there isn't any need to maintain a separate storage community. The disk efficiency on each and every compute node is directly concerning the number and efficiency of current local disks. The chassis measurement of the compute node will limit the number of spindles capable of be used in a compute node. besides the fact that children, if a compute node fails, the situations on it can not be recovered. also, there is not any system to migrate instances. This omission can be an important challenge for cloud services that create persistent records. different cloud features, however, operate processing services without storing any local facts, by which case no native persistent data is created.

    The cloud control plane, carried out as an OpenStack controller, can consist of one or greater programs. With Oracle Solaris, typically the OpenStack controller is created in kernel zones for modular setups. Scalability on the controller site can then be done just by way of adding yet another kernel zone. The OpenStack manage services can all be mixed in one kernel zone. For scalability and reliability reasons, the capabilities can also be grouped into separate kernel zones, proposing right here services:

    7.2.10 OpenStack abstract

    running OpenStack on Oracle Solaris provides many benefits. a complete OpenStack distribution is a part of the Oracle Solaris Repository and, for this reason, is accessible for Oracle Solaris without any extra can charge. The tight integration of the finished virtualization facets for compute and networking—Solaris Zones, digital NICs and switches, and the Elastic virtual swap—in Oracle Solaris supply gigantic value now not found in different OpenStack implementations. the mixing of OpenStack with Oracle Solaris leverages the image Packaging device, ZFS boot environments, and the provider management Facility. As a end result, an administrator can rapidly start an replace of the cloud ambiance, and may immediately replace each and every carrier and node in a single operation.


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