Disabling and Re-enabling Deduplication, 30.4.8.2. NFS allows a system to share directories and files with others over a network. Feedback? Server Message Block (SMB)", Collapse section "9. Note. Persistent Memory: NVDIMMs", Expand section "28.5. looking for some 'real world' advice about dealing with an NFS problem on our NAS. apt-get install nfs-kernel-server. Removing VDO Volumes", Expand section "30.4.5. After that, to enable NFS to start at boot, we use the following command: # systemctl enable nfs. Running vobd stop Using volume_key as an Individual User, 20.3. All that's required is to issue the appropriate command after editing the /etc/exports file: Excerpt from the official Red Hat documentation titled: 21.7. Running sensord restart Step 3. Stale NFS File Handle why does fsid resolve it? Increase visibility into IT operations to detect and resolve technical issues before they impact your business. Is a PhD visitor considered as a visiting scholar? There should be no files or subdirectories in the /opt/example directory, else they will become inaccessible until the nfs filesystem is unmounted. For more information, see Testing VMkernel network connectivity with the vmkping command (1003728). Changing the Read/Write State of an Online Logical Unit", Expand section "25.19. Overview of Filesystem Hierarchy Standard (FHS)", Collapse section "2.1.1. Configuring iSCSI Offload and Interface Binding", Collapse section "25.14. However, my ESXi box was configured to refer to the NFS share by IP address not host name. When I installed Ubuntu Desktop, I chose to go with a minimal installation as I didn't need any office software, games or media players. For more information, see this VMware KB article. It only takes a minute to sign up. System Storage Manager (SSM)", Collapse section "16.1.1. Mounting a File System", Collapse section "19.2. Setting Read-only Permissions for root, 19.2.5.1. Furthermore, there is a /etc/nfs.conf.d directory which can hold *.conf snippets that can override settings from previous snippets or from the nfs.conf main config file itself. The kerberos packages are not strictly necessary, as the necessary keys can be copied over from the KDC, but it makes things much easier. The opinions discussed on this site are strictly mine and not the views of Dell EMC, Veeam, VMware, Virtualytics or The David Hill Group Limited. Data Efficiency Testing Procedures", Collapse section "31.3. Running storageRM restart Let's say in /etc/exports: Then whenever i made some changes in that (let's say the changes ONLY for client-2), e.g: Then i always service nfs restart. Deployment Scenarios", Collapse section "30.6.3. You can either run: And paste the following into the editor that will open: Or manually create the file /etc/systemd/system/rpc-gssd.service.d/override.conf and any needed directories up to it, with the contents above. Accessing RPC Quota through a Firewall, 8.7.1. Both qnaps are still serving data to the working host over NFS, they are just not accepting new connections. There is a new command-line tool called nfsconf(8) which can be used to query or even set configuration parameters in nfs.conf. To verify which system was using the NFS share, as well as which ports NFS was using, I entered netstat | grep nfs and rpcinfo -p | grep nfs (Figure 8). Setting that up is explained elsewhere in the Ubuntu Server Guide. Running vprobed restart For example, systemctl restart nfs-server.service will restart nfs-mountd, nfs-idmapd and rpc-svcgssd (if running). Using volume_key in a Larger Organization", Expand section "23. [Click on image for larger view.] Like with sync, exportfs will warn if its left unspecified. esxi, management agents, restart, services, SSH, unresponsive, VMware. Redundant Array of Independent Disks (RAID)", Expand section "19. Running sensord stop You can run the conversion tool manually to gather more information about the error: its in /usr/share/nfs-common/nfsconvert.py and must be run as root. We are now going to configure a folder that we shall export to clients. Configuring a tftp Service for Diskless Clients, 24.2. Configuring the NVMe initiator for QLogic adapters, III. Managing Disk Quotas", Collapse section "17.2. Configuring NFS Client", Expand section "8.6. # systemctl start nfs-server.service # systemctl enable nfs-server.service # systemctl status nfs-server.service. esxcli storage nfs add -H HOST -s ShareName/MountPoint -v DATASTORE_NAME. NFS Esxi NFSVMware ESXI 5.5 NFS , . Using the mount Command", Expand section "19.1. Earlier Ubuntu releases use the traditional configuration mechanism for the NFS services via /etc/defaults/ configuration files. Crypt Back End", Collapse section "16.2. For example: Home directories could be set up on the NFS server and made available throughout the network. Using the Cache with NFS", Expand section "II. Running vprobed stop Since NFS is comprised of several individual services, it can be difficult to determine what to restart after a certain configuration change. To unmount the NFS storage: esxcli storage nfs remove -v datastore_nfs02. You shouldn't need to restart NFS every time you make a change to /etc/exports. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Enabling and Disabling Compression, 30.6.3.1.1. Storage Administration", Collapse section "II. Starting openwsmand /etc/nfs.conf [nfsd] host=192.168.1.123 # Alternatively, use the hostname. Also read the exportfs man page for more details, specifically the "DESCRIPTION" section which explains all this and more. In my case my NFS server wouldn't present the NFS share until it was able to contact a DNS server, I just picked a random internet one and the moment I did this the ESXi box was able to mount the NFS datastores. Privacy Select our newly mounted NFS datastore and click " Next ". A pool successfully created. In this support article, we outline how to set up ESXi host and/or vCenter server monitoring. I'd be inclined to shutdown the virtual machines if they are in production. Replacing Failed Devices on a btrfs File System, 6.4.7. Configuring an iface for iSCSI Offload, 25.14.4. Setting the Grace Period for Soft Limits, 18. For reference, the step-by-step procedure I performed: Thanks for contributing an answer to Unix & Linux Stack Exchange! To take effect of the changes, restart the portmap, nfs, and iptables services. However after a while we found that the rpc NFS service was unavailable on BOTH qnaps. We have the VM which is located on . Configuring Snapper to Take Automated Snapshots, 14.3. Introduction to NFS", Expand section "8.2. Is there a proper earth ground point in this switch box? FHS Organization", Collapse section "3. Features of XFS Backup and Restoration, 3.7.3. Wrapping a Command in Pre and Post Snapshots, 14.2.2. Configuring the NFS Server", Expand section "8.6.2. Theoretical Overview of VDO", Expand section "30.2. [4] Select [Mount NFS datastore]. Success. Administering VDO", Expand section "30.4.3. Creating a Partition", Expand section "14. How To Set Up an NFS Server on Windows Server 2012, Enabling Cloud Native Access to Internal Web Apps with Amazon WorkSpaces Web, Hands On with Windows 365 Business Edition, Introduction to Docker, Part 3: Networking, Feds Say Software Makers Must 'Be Held Liable' for Cybersecurity Failures, 6 'Quick Wins' for Endpoint Security Management (and 6 'Complex Wins'), AI Coming for Your Job? Aside from the UID issues discussed above, it should be noted that an attacker could potentially masquerade as a machine that is allowed to map the share, which allows them to create arbitrary UIDs to access . Changing the Read/Write State of an Online Logical Unit, 25.17.4.2. But you will have to shut down virtual machines (VMs) or migrate them to another host, which is a problem in a production environment. Resizing Fibre Channel Logical Units, 25.17.3. Ubuntu Wiki NFS Howto Mounting a File System", Expand section "19.2.5. Thankfully it doesnt take a lot to fix this issue, but could certainly become tedious if you have many NFS datastores which you need to perform these commands on, First up, list the NFS datastores you have mounted on the host with the following. Required fields are marked *. Phase 2: Effects of I/O Request Size, 31.4.3. First up, we need to login to our Windows Server and open up the Server Management tool, once open, click on the large text link labelled " Add Roles and Features " as shown here: Once you have clicked on the " Add Roles and Features " link you should then be presented with this wizard: Use an SSH client for connecting to an ESXi host remotely and using the command-line interface. 2. Troubleshooting NVDIMM", Expand section "29. An alternative is to use rpc.gssds -n option. Anyways, as it is I have a couple of NFS datastores that sometimes act up a bit in terms of their connections. 2023 Canonical Ltd. Ubuntu and Canonical are For Enabling ESXi Shell or SSH, see Using ESXi Shell in ESXi 5.x and 6.x (2004746). Persistent Memory: NVDIMMs", Collapse section "28. It can be just a stronger authentication mechanism, or it can also be used to sign and encrypt the NFS traffic. As NFS share will be used by any user in the client, the permission is set to user ' nobody ' and group ' nogroup '. ie: did you connect your NFS server using DNS names? Each file has a small explanation about the available settings. Adjust these names according to your setup. Then, with an admin principal, lets create a key for the NFS server: And extract the key into the local keytab: This will already automatically start the kerberos-related nfs services, because of the presence of /etc/krb5.keytab. Modifying Link Loss Behavior", Expand section "25.19.2. iSCSI Settings with dm-multipath", Collapse section "25.19.2. iSCSI Settings with dm-multipath", Expand section "26. Check for storage connectivity issues. So this leads me to believe that NFS on the Solaris host won't actually share until it can contact a DNS server. rpcinfo -p | sort -k 3 Restore the pre-nfs-firewall-rules now The exportfs Command", Collapse section "8.6.2. Native Fibre Channel Drivers and Capabilities, 25.5. systemd[1 . I then clicked Configure, which showed the properties and capacity for the NFS share (Figure 6). NFS Datastore cannot be connected after a restart. Select NFS for the datastore type, and click Next. The most reliable method to restart ESXi management agents is to use the ESXi Direct Console User Interface (DCUI). When I deleted the original NFS datastore and try to remount the NFS resource, I got error message: unable to mount; unable to connect to NFS server. Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012. Creating Initial Snapper Configuration, 14.2.1. no_root_squash, for example, adds a convenience to allow root-owned files to be modified by any client systems root user; in a multi-user environment where executables are allowed on a shared mount point, this could lead to security problems. Creating a Snapper Snapshot", Expand section "14.2.1. Read the blog post about ESXCLI to learn more about ESXi command-line options. The NAS server must enforce this policy because, NFS 3 and non-Kerberos (AUTH_SYS) NFS 4.1 do not support the delegate user functionality that enables access to NFS volumes using nonroot credentials. vprobed started. Different storage vendors have different methods of enabling this functionality, but typically the NAS servers use the, If the underlying NFS volume is read-only, make sure that the volume is exported as a read-only share by the NFS server. Phase 1: Effects of I/O Depth, Fixed 4 KB Blocks, 31.4.2. In the File Service -> Click Enabled. To enable NFS support on a client system, enter the following command at the terminal prompt: Use the mount command to mount a shared NFS directory from another machine, by typing a command line similar to the following at a terminal prompt: The mount point directory /opt/example must exist. You can also manually stop and start a service: You can try to use the alternative command to restart vpxa: If Link Aggregation Control Protocol (LACP) is used on an ESXi host that is a member of a vSAN cluster, dont restart ESXi management agents with the, If NSX is configured in your VMware virtual environment, dont use the. Configuring iSCSI Offload and Interface Binding, 25.14.1. ? List all services available on the ESXi host (optional) with the command: Use this command as an alternative, to restart all management agents on the ESXi host. The best answers are voted up and rise to the top, Not the answer you're looking for? sudo apt install nfs-kernel-server To start the NFS server, you can run the following command at a terminal prompt: sudo systemctl start nfs-kernel-server.service Configuration You can configure the directories to be exported by adding them to the /etc/exports file. I then made sure the DNS server was up and that DSS could ping both the internal and OPENDNS servers. The /etc/exports Configuration File, 8.6.4. Setting up pNFS SCSI on the Server, 8.10.4. Although this is solved by only a few esxcli commands I always find it easier for me to remember (and find) if I post it here . Using the mount Command", Collapse section "19. The first step in doing this is to add the followng entry to /etc/hosts.deny: portmap:ALL Starting with nfs-utils 0.2.0, you can be a bit more careful by controlling access to individual daemons. At last! Minimum order size for Basic is 1 socket, maximum - 4 sockets. To see if the NFS share was accessible to my ESXi servers, I logged on to my vCenter Client, and then selected Storage from the dropdown menu (Figure 5). Is it known that BQP is not contained within NP? Head over to " Server Manager ". I figured at least one of them would work. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Common SSM Tasks", Expand section "17.1. Increasing the Size of an XFS File System, 3.7. If you have a different name for the management network interface, use the appropriate interface name in the command. Setup Requirements Creating a Read-only User for an ESXi Host or vCenter Server As highlighted in the next two sections, the process Continued NFS Security with AUTH_GSS", Expand section "8.10. Run this command to delete the NFS mount: esxcli storage nfs remove -v NFS_Datastore_Name Note: This operation does not delete the information on the share, it unmounts the share from the host. Here's how to enable NFS in our Linkstation. Configuring Error Behavior", Expand section "3.10. Running vmware-vpxa stop subtree_check and no_subtree_check enables or disables a security verification that subdirectories a client attempts to mount for an exported filesystem are ones theyre permitted to do so. The nfs.systemd(7) manpage has more details on the several systemd units available with the NFS packages. After a network failure which took one of our hosts off the network, we couldn't reconnect to both of the qnaps. Although SMB and NFS can both work with various OSes (Windows, Linux, macOS and so on) the reality is that SMB is most often used by Windows and macOS systems, and NFS is most often used by Linux and Unix systems. Then enter credentials for an administrative account on ESXi to log in to VMware Host Client. If you cannot open VMware Host Client, use other methods to restart ESXi management agents. I've always used IP address. Notify me of follow-up comments by email. The standard port numbers for rpcbind (or portmapper) are 111/udp, 111/tcp and nfs are 2049/udp, 2049/tcp. Linear regulator thermal information missing in datasheet. Wait until ESXi management agents restart and then check whether the issues are resolved. So, we're pretty sure that we can simply restart the NFS service on the qnaps and everything will work. sleep 20 && service nfs-kernel-server restart. Mounting an SMB Share", Expand section "9.2.1. What I don't understand is that they work together without problem before the ESXi server was restarted. But the problem is I have restarted the whole server and even reinstalled the NFS server, it still doesn't work. Troubleshooting NVDIMM", Collapse section "28.5. disc drive). Mounting an SMB Share Automatically When the System Boots, 9.2.4. Setting up the Challenge-Handshake Authentication Protocol, 25.4.2. Getting Started with VDO", Collapse section "30.3. VMware vpxa is used as the intermediate service for communication between vCenter and hostd. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.