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le vm recommendations overview view and apply idle vm recommendations configure idle vm recommendations manage reservation recommendations reservation recommendations overview view and apply idle reservation recommendations view and apply underutilized reservation recommendations configure idle reservation recommendations configure underutilized reservation recommendations overcommit cpus on sole tenant vms manual live migration about manual live migration manually live migrate vms share sole tenant node groups next generation dynamic resource management cost savings get discounts for committed usage about commitments and committed use discounts cuds resource based cuds purchase resource based commitments without attached reservations with attached reservations for os licenses manage resource based commitments renew commitments automatically extend commitment terms merge and split commitments upgrade commitments share resource based cuds across projects get discounts for sustained usage disk performance optimize hyperdisk performance optimize persistent disk performance optimize local ssd performance workload performance set the number of threads per core customize the number of visible cpu cores analyze the cpu performance using the pmu pmu overview enable the pmu in vms manage the pmu in vms network performance network bandwidth use google virtual nic use irdma network driver use idpf network interface configure a vm with higher bandwidth reduce latency by using compact placement policies optimize tcp network communication optimize tcp network performance optimize tcp network resiliency benchmark higher bandwidth vms optimize app latency with load balancing use dpdk to improve network performance network performance and gpu vms networking and gpu machines use higher network bandwidth patterns for using multiple host nics troubleshoot general tips troubleshoot connectivity troubleshoot rdp troubleshoot ssh troubleshoot os login troubleshoot vms troubleshoot vm operations troubleshoot vm creation troubleshoot resource availability errors troubleshoot bulk api vm creation troubleshoot vm reboots and shutdowns troubleshoot vm suspension troubleshoot vm updates troubleshoot unresponsive vms troubleshoot vm startup troubleshoot fstab errors troubleshoot kernel panic collecting core dumps rescue an inaccessible vm troubleshoot cpu bus locks troubleshoot cpu soft lockups troubleshoot vm configurations troubleshoot arm vms troubleshoot gpu vms troubleshoot nvidia gpu errors generate a nvidia bug report for blackwell gpus troubleshoot nested virtualization troubleshoot using vm screenshots troubleshoot sole tenant nodes troubleshoot vm performance issues troubleshoot sudoers files troubleshoot windows vms troubleshoot windows vms collecting diagnostic information troubleshoot using the serial console troubleshoot using the serial console viewing serial port output troubleshoot instance groups troubleshoot managed instance groups migs troubleshoot os management troubleshoot licenses troubleshoot image import and export troubleshooting sles pay as you go registration troubleshooting ubuntu pro registration troubleshoot metadata server troubleshoot metadata server troubleshoot networking issues troubleshoot common networking issues troubleshoot network drivers troubleshoot vm performance issues troubleshoot storage troubleshoot disk creation troubleshoot full disks and disk resizing troubleshoot disk encryption troubleshoot nvme disks troubleshoot instant snapshots troubleshoot standard snapshots troubleshoot reservations and commitments troubleshoot reservation creation troubleshoot reservation consumption troubleshooting reservation monitoring troubleshoot reservation updates troubleshoot future reservation creation and updates troubleshoot automatic commitment renewal troubleshoot quota errors troubleshoot concurrent operation quota errors troubleshoot workload authentication troubleshoot default service accounts troubleshoot workload to workload authentication ai and ml application development application hosting compute data analytics and pipelines databases distributed hybrid and multicloud industry solutions migration networking observability and monitoring security storage access and resources management costs and usage management infrastructure as code sdk languages frameworks and tools home documentation compute compute engine guides send feedback configure sql server always on availability groups with synchronous commit using an internal load balancer stay organized with collections save and categorize content based on your preferences microsoft sql server always on availability groups let you replicate databases across multiple sql server enterprise instances similar to sql server failover cluster instances always on availability groups use windows server failover clustering wsfc to implement high availability however the two features differ in the following ways always on availability groups failover cluster instances scope of fail over group of databases instance storage not shared shared for a more detailed comparison see comparison of failover cluster instances and availability groups always on availability groups support multiple availability modes this tutorial shows how you can deploy always on availability groups in synchronous commit mode to implement high availability for one or more databases in the setup you will create three vm instances two vm instances node 1 and node 2 serve as cluster nodes and run sql server a third vm instance witness is used to achieve a quorum in a failover scenario the three vm instances are distributed over three zones and share a common subnet using a sql server always on availability group an example database bookshelf is synchronously replicated across the two sql server instances in an on premises windows cluster environment address resolution protocol arp announcements trigger ip address failover google cloud however disregards arp announcements consequently you must implement one of the following two options using an internal load balancer and a distributed network name dnn the article assumes that you have already deployed active directory on google cloud and that you have basic knowledge of sql server active directory and compute engine for more information about active directory on google cloud see section before you begin using a sql server always on availability group an example database bookshelf is synchronously replicated across the two sql server instances an internal load balancer ensures that traffic is directed to the active node for more information about windows server failover clustering with an internal load balancer see failover clustering this diagram includes the following two vm instances in the same region and different zones for the failover cluster called node 1 and node 2 one hosts the primary replica of the sql server database while the other node hosts the secondary replica a third vm called witness serves as a file share witness to provide a tie breaking vote and achieve a quorum for failover an internal load balancer in front of the cluster provides a single endpoint for sql server clients and uses a health check to ensure that traffic is directed to the active node objectives this tutorial aims to achieve the following objectives deploy a wsfc comprising two sql server vm instances and a third vm instance that acts as a file share witness create an availability group with synchronous commit configure a load balancer verify that the setup is working by simulating a failover costs this tutorial uses billable components of google cloud including compute engine cloud load balancing use the pricing calculator to generate a cost estimate based on your projected usage before you begin to complete the tasks in this tutorial ensure the following sign in to your google cloud account if you re new to google cloud create an account to evaluate how our products perform in real world scenarios new customers also get 300 in free credits to run test and deploy workloads in the google cloud console on the project selector page select or create a google cloud project roles required to select or create a project select a project selecting a project doesn t require a specific iam role you can select any project that you ve been granted a role on create a project to create a project you need the project creator role roles resourcemanager projectcreator which contains the resourcemanager projects create permission learn how to grant roles note if you don t plan to keep the resources that you create in this procedure create a project instead of selecting an existing project after you finish these steps you can delete the project removing all resources associated with the project go to project selector verify that billing is enabled for your google cloud project in the google cloud console on the project selector page select or create a google cloud project roles required to select or create a project select a project selecting a project doesn t require a specific iam role you can select any project that you ve been granted a role on create a project to create a project you need the project creator role roles resourcemanager projectcreator which contains the resourcemanager projects create permission learn how to grant roles note if you don t plan to keep the resources that you create in this procedure create a project instead of selecting an existing project after you finish these steps you can delete the project removing all resources associated with the project go to project selector verify that billing is enabled for your google cloud project you have an active directory domain with at least one domain controller you can create an active directory domain using managed microsoft ad alternatively you can deploy a custom active directory environment on compute engine and set up a private dns forwarding zone that forwards dns queries to your domain controllers you have an active directory user that has permission to join computers to the domain and can sign in by using rdp if you re using managed microsoft ad you can use the setupadmin user for more information about active directory user account provisioning see active directory user account provisioning a google cloud project and a virtual private cloud vpc with connectivity to your active directory domain controllers a subnet to use for the windows server failover cluster vm instances when you finish this tutorial you can avoid continued billing by deleting the resources you created for more information see cleaning up prepare your project and network to deploy your sql server always on availability groups you must prepare your google cloud project and vpc for the deployment the following sections discuss how you can do this in detail configure your project and region to prepare your google cloud project for the deployment of sql server always on availability groups do the following in the google cloud console open cloud shell by clicking the activate cloud shell button go to the google cloud console initialize the following variables vpc_name vpc_name subnet_name subnet_name replace the following vpc_name name of your vpc subnet_name name of your subnet set your default project id gcloud config set project project_id replace project_id with the id of your google cloud project set your default region gcloud config set compute region region replace region with the id of the region you want to deploy in create firewall rules to allow clients to connect to the sql server and the communication between the cluster nodes you need to create several firewall rules you can use network tags to simplify the creation of these firewall rules as follows the two cluster nodes are annotated with the wsfc node tag all servers including the witness are annotated with the wsfc tag to create firewall rules that use these network tags use the following steps return to your existing cloud shell session create firewall rules to allow traffic between cluster nodes subnet_cidr gcloud compute networks subnets describe subnet_name format value ipcidrrange gcloud compute firewall rules create allow all between wsfc nodes direction ingress action allow rules tcp udp icmp enable logging source tags wsfc target tags wsfc network vpc_name priority 10000 gcloud compute firewall rules create allow sql to wsfc nodes direction ingress action allow rules tcp 1433 enable logging source ranges subnet_cidr target tags wsfc node network vpc_name priority 10000 note depending on how you ve deployed the active directory you might need to create additional firewall rules to allow servers to join the domain for more information see accessing managed microsoft ad from within your vpc create vm instances create and deploy two vm instances for the failover cluster at any point in time one of these vms hosts the primary replica of the sql server database while the other node hosts the secondary replica the two vm instances must be located in the same region so that they can be accessed by an internal passthrough network load balancer have windows server failover cluster and sql server installed have compute engine wsfc support enabled you use a sql server premium image which has sql server 2022 preinstalled note if you plan to bring your own licenses for sql server by using the license mobility program select windows server base images for these nodes and install sql server using your own product keys to provide a tie breaking vote and achieve a quorum for the failover scenario deploy a third vm that serves as a file share witness using the following steps return to your existing cloud shell session create a specialized script for the wsfc nodes this script installs the necessary windows features and creates firewall rules for wsfc and sql server cat specialize node ps1 erroractionpreference stop install required windows features install windowsfeature failover clustering includemanagementtools install windowsfeature rsat ad powershell open firewall for wsfc netsh advfirewall firewall add rule name allow wsfc health check dir in action allow protocol tcp localport 59998 open firewall for sql server netsh advfirewall firewall add rule name allow sql server dir in action allow protocol tcp localport 1433 open firewall for sql server replication netsh advfirewall firewall add rule name allow sql server replication dir in action allow protocol tcp localport 5022 format data disk get disk where partitionstyle eq raw initialize disk partitionstyle mbr passthru new partition assigndriveletter usemaximumsize format volume filesystem ntfs newfilesystemlabel data confirm false create data and log folders for sql server md d data md d logs eof create the vm instances on the two cluster nodes attach a data disk and set the enable wsfc metadata key to true this action enables windows server failover clustering and configures a local listener on the default port 59998 ...
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