Install Haproxy On Centos 7 Disable Firewall On CentosThe Nutanix Bibleacropolis krplis noun data planestorage, compute and virtualization platform. Architecture. Acropolis is a distributed multi resource manager, orchestration platform and data plane. It is broken down into three main components Distributed Storage Fabric DSF. This is at the core and birth of the Nutanix platform and expands upon the Nutanix Distributed Filesystem NDFS. NDFS has now evolved from a distributed system pooling storage resources into a much larger and capable storage platform. Install Haproxy On Centos 7 Disable Firewall' title='Install Haproxy On Centos 7 Disable Firewall' />App Mobility Fabric AMF. Hypervisors abstracted the OS from hardware, and the AMF abstracts workloads VMs, Storage, Containers, etc. This will provide the ability to dynamically move the workloads between hypervisors, clouds, as well as provide the ability for Nutanix nodes to change hypervisors. Hypervisor. A multi purpose hypervisor based upon the Cent. OS KVM hypervisor. Building upon the distributed nature of everything Nutanix does, were expanding this into the virtualization and resource management space. Acropolis is a back end service that allows for workload and resource management, provisioning, and operations. Its goal is to abstract the facilitating resource e. This gives workloads the ability to seamlessly move between hypervisors, cloud providers, and platforms. The figure highlights an image illustrating the conceptual nature of Acropolis at various layers Figure 1. High level Acropolis Architecture. Note. Supported Hypervisors for VM Management. As of 4. 7, AHV and ESXi are the supported hypervisors for VM management, however this may expand in the future. The Volumes API and read only operations are still supported on all. Hyperconverged Platform. For a video explanation you can watch the following video LINKThe Nutanix solution is a converged storage compute solution which leverages local components and creates a distributed platform for virtualization, also known as a virtual computing platform. The solution is a bundled hardware software appliance which houses 2 6. U footprint. Each node runs an industry standard hypervisor ESXi, KVM, Hyper V currently and the Nutanix Controller VM CVM. The Nutanix CVM is what runs the Nutanix software and serves all of the IO operations for the hypervisor and all VMs running on that host. For the Nutanix units running VMware v. Sphere, the SCSI controller, which manages the SSD and HDD devices, is directly passed to the CVM leveraging VM Direct Path Intel VT d. In the case of Hyper V, the storage devices are passed through to the CVM. The following figure provides an example of what a typical node logically looks like Figure 1. Converged Platform. Distributed System. After the BEAST attack and Heartbleed bug, now Ive heard about a new vulnerability in SSLTLS called POODLE. How do I protect myself against being exploited Are. CentOS 7. x 64 Memcached CentOS 7. The Nutanix Bible A detailed narrative of the Nutanix architecture, how the software and features work and how to leverage it for maximum performance. Here you will find information about the RHEL 7 Firewalld component. The weekend is approaching fast. I have decided to end the week with a post on how to disable IPv6 on your Windows computer with a simple Powershell oneliner, since I. This is a post to explain how you can install PowerShell 2. Windows 2003 R2 SP2 32bit which, by default, has no PowerShell at all. As you might have noticed. There are three very core structs for distributed systems. Must have no single points of failure SPOF. Must not have any bottlenecks at any scale must be linearly scalable. Must leverage concurrency Map. Reduce. Together, a group of Nutanix nodes forms a distributed system Nutanix cluster responsible for providing the Prism and Acropolis capabilities. All services and components are distributed across all CVMs in a cluster to provide for high availability and linear performance at scale. The following figure shows an example of how these Nutanix nodes form a Nutanix cluster Figure 1. Nutanix Cluster Distributed System. These techniques are also applied to metadata and data alike. By ensuring metadata and data is distributed across all nodes and all disk devices we can ensure the highest possible performance during normal data ingest and re protection. This enables our Map. Reduce Framework Curator to leverage the full power of the cluster to perform activities concurrently. Sample activities include that of data re protection, compression, erasure coding, deduplication, etc. The following figure shows how the of work handled by each node drastically decreases as the cluster scales. Figure. Work Distribution Cluster Scale. Key point As the number of nodes in a cluster increases cluster scaling, certain activities actually become more efficient as each node is handling only a fraction of the work. Software Defined. There are three very core structs for software definition systems. Must provide platform mobility hardware, hypervisor. Must not be reliant on any custom hardware. Must enable rapid speed of development features, bug fixes, security patches. Must take advantage of Moores Law. As mentioned above likely numerous times, the Nutanix platform is a software based solution which ships as a bundled software hardware appliance. The controller VM is where the vast majority of the Nutanix software and logic sits and was designed from the beginning to be an extensible and pluggable architecture. A key benefit to being software defined and not relying upon any hardware offloads or constructs is around extensibility. As with any product life cycle, advancements and new features will always be introduced. By not relying on any custom ASICFPGA or hardware capabilities, Nutanix can develop and deploy these new features through a simple software update. This means that the deployment of a new feature e. Nutanix software. This also allows newer generation features to be deployed on legacy hardware models. For example, say youre running a workload running an older version of Nutanix software on a prior generation hardware platform e. The running software version doesnt provide deduplication capabilities which your workload could benefit greatly from. To get these features, you perform a rolling upgrade of the Nutanix software version while the workload is running, and you now have deduplication. Its really that easy. Similar to features, the ability to create new adapters or interfaces into DSF is another key capability. When the product first shipped, it solely supported i. SCSI for IO from the hypervisor, this has now grown to include NFS and SMB. In the future, there is the ability to create new adapters for various workloads and hypervisors HDFS, etc. And again, all of this can be deployed via a software update. This is contrary to most legacy infrastructures, where a hardware upgrade or software purchase is normally required to get the latest and greatest features. With Nutanix, its different. Since all features are deployed in software, they can run on any hardware platform, any hypervisor, and be deployed through simple software upgrades. The following figure shows a logical representation of what this software defined controller framework looks like Figure 1. Software Defined Controller Framework. Cluster Components. For a visual explanation you can watch the following video LINK. The user facing Nutanix product is extremely simple to deploy and use. This is primarily possible through abstraction and a lot of automation integration in the software. The following is a detailed view of the main Nutanix Cluster components dont worry, no need to memorize or know what everything does Figure 1. Nutanix Cluster Components. Cassandra. Key Role Distributed metadata store. Description Cassandra stores and manages all of the cluster metadata in a distributed ring like manner based upon a heavily modified Apache Cassandra. The Paxos algorithm is utilized to enforce strict consistency. This service runs on every node in the cluster. The Cassandra is accessed via an interface called Medusa. Zookeeper. Key Role Cluster configuration manager. Managing Instance Access with SSH Keys    Compute Engine Documentation. Google Cloud Platform. This guide shows you how to control access to a Linux instance by creating SSH. SSH key metadata. If you simply need to connect to. Linux instance, see. Connecting to Linux Instances. If you need to connect to a Windows instance, see. Connecting to Windows Instances. To connect to a Linux VM instance, you must have an SSH key. Compute Engine manages your SSH keys for you whenever you. SSH keys when necessary. However, in some. SSH keys. for your project members. If you. connect to Linux instances using third party tools. SSH keys yourself. An SSH key consists of the following files A public SSH key file that is applied to instance level metadata or. A private SSH key file that the user stores on their local devices. Users can connect to an instance through third party tools if their public SSH. SSH key. Any user who connects to an instance is. SSH access. to instances as the root user is disabled even if you specify an SSH key in. Caution Managing the public SSH keys that allow users to connect to your. Compute Engine instances has inherent risks and is only recommended. By managing the SSH keys yourself, you can potentially. For more information, see. Before you begin. Permissions required for this task. To perform this task, you must have the following permissions. Metadata on the instance if setting. Common. Instance. Metadata on the project if. Risks of manual key management. Note You can avoid the risks of manual key management by using the. OS Login API to manage your SSH keys instead of project or instance. Read Managing SSH keys using the OS Login API to. If you create and manage public SSH keys yourself through the. Cloud Platform Console, the gcloud command line tool, or the API, you must. SSH keys for users who should. For example, if a team member leaves your project, remove their. SSH keys from metadata so they cannot continue to. Additionally, specifying your gcloud tool or API calls incorrectly can. SSH keys in your project or on your. If you are not sure that you want to manage your own keys. Compute Engine tools to connect to your instances. Overview. By creating and managing SSH keys, you can allow users to access a Linux. An SSH key consists of the following files A public SSH key file that is applied to instance level metadata or. A private SSH key file that the user stores on their local devices. If a user presents their private SSH key, they can use a third party tool to. SSH key. file, even if they are not a member of your Cloud Platform project. Therefore. you can control which instances a user can access by changing the public SSH key. To edit public SSH key metadata Decide which tool you will use to edit metadata If you need to add users to a Linux instance, prepare their public SSH keys. Edit public SSH key metadata to add or remove users. Linux instance. Connect to your Linux instance through a. SSH key is added or removed correctly. A user can. only connect to an instance if their public SSH key is available to the. SSH key. Creating a new SSH key. If you do not have an existing private SSH key file and a matching public SSH. SSH key. If you want to use an. SSH key, locate the public SSH key file. Linux and mac. OS On Linux or mac. OS workstations, you can generate a key with the. Open a terminal on your workstation and use the ssh keygen command to. Specify the C flag to add a comment with your. KEYFILENAME C USERNAME. KEYFILENAME is the name that you want to use for your SSH key. For example, a filename of my ssh key generates a private key. USERNAME is the user for whom you will apply this SSH key. This command generates a private SSH key file and a matching public. SSH key with the following structure. KEYVALUE USERNAME. KEYVALUE is the key value that you generated. USERNAME is the user that this key applies to. Restrict access to your private key so that only you can read it and. KEYFILENAME. where KEYFILENAME is the name that you used for your SSH key files. Repeat this process for every user for who needs a new key. Then, locate the public SSH keys that you made as well as. SSH keys that you want to add to a project or instance. Windows Windows does not have a built in tool for generating SSH keys, so you. SSH keys if you are on a. Windows workstation. Here, we describe how to generate SSH keys with. Pu. TTYgen tool. Download puttygen. Run Pu. TTYgen. For this example, simply run the puttygen. A window opens where you can configure your. Click Generate and follow the on screen instructions to generate a. For most cases, the default parameters are fine, but you. When you are done generating. In the Key comment section, replace the existing text with the. Optionally, you can enter a Key passphrase to protect your key. Click Save private key to write your private key to a file with a. Click Save public key to write your public key to a file for later. Keep the Pu. TTYgen window open for now. Note If you created an SSH key with Pu. TTYgen, the default public. SSH key file will not be formatted correctly if it is opened outside of. Pu. TTYgen. The correctly formatted public key is available at the top of the. Pu. TTYgen screen This public key has the following structure. KEYVALUE USERNAME. KEYVALUE is the key value that you generated. USERNAME is the user that this key applies to. Repeat this process for every user that you need to create a key for. Then, if you have other public SSH keys for users that you want to add to a. SSH keys now. Otherwise. SSH keys that you created. Locating an SSH key. There are multiple reasons why you might need to locate an SSH key. For. example, if you want to add a users public SSH key to a project or instance. Alternatively. you might need to locate your private SSH key file in order to connect to a. Linux instance. When an SSH key is created, it is saved to a default location. The default. locations and names of your public and private SSH key files depend. Linux and mac. OS If you created a key on a Linux or mac. OS workstation by using the. Public key file. KEYFILENAME. Private key file. KEYFILENAMEwhere KEYFILENAME is the filename of the SSH key, which was set. If you need to add or remove the public SSH key from project or instance. SSH key file. Windows If you created a key on a Windows workstation by using the Pu. TTYgen tool. your public key file and private key file were saved to the locations that. Public key PUBLICKEYFILENAMEPrivate key PRIVATEKEYFILENAME. PUBLICKEYFILENAME and PRIVATEKEYFILENAME are the filenames. SSH keys, which were set when the key was first. Note If you created an SSH key with Pu. TTYgen, the default public SSH. Pu. TTYgen. A default, public SSH key made with Pu. TTYgen should have the following. KEYVALUE USERNAME. The Complete Audio Holy Bible King James Version Audiobook Audio Cd on this page. KEYVALUE is the public SSH key value. USERNAME is the user on the instance for whom you applied the key. To view your Pu. TTYgen public SSH key with the correct formatting Run Pu. TTYgen. If you do not have Pu. TTYgen, download and run. Click Load to select and open your public SSH key file. After the public key file loads, the properly formatted public SSH. Pu. TTYgen screen If you need to add or remove the public SSH key from project or instance. SSH key file. gcloud If you have already. The. key files are available in the following locations Linux and mac. OSPublic key HOME. Private key HOME. Windows Public key C UsersUSERNAME. Private key C UsersUSERNAME.