How to mount remote linux filesystem or directory into local linux machine. Let's say if there is a remote directory and I want to access its all content as if it is in my local hard disk.
To mount remote directory into local machine, 1st make sure you have ssh access to the machine. And then try with:
sudo sshfs -o allow_other <remote user>#<remote ip>:<remote directory> <local directory>
This is for ubuntu. For fedora replace sudo with yum and so on and so forth.
Related
We have VirtualBox (using vagrant) env , by mistake made an entry in /etc/security/limits.conf [with out having a root shell open:( ] and now I am unable to ssh (the connections drops immediately).
Previously we had one such scenario (limits done by someone else) , was able to fix using vboxmanage guestcontrol copyto CLI and was able to overwrite limits.conf and then ssh was allowed, this time around the vboxmanage CLI also hangs
Tried to open the VM in GUI and went to console and tried few options , but could not get to single user mode.
Since you already tried vbox cli command and the commands hang, it means even virtualbox cannot access the system or get a shell to open.
In this case you will have to bring up a ubuntu VM and use the qemu-nbd module to fix this. The steps are given below.
Bring up a very simple ubuntu vm using hashicorp’s bionic64 on the same host machine by executing the following steps.
mkdir bionic
cd bionic
vagrant box add hashicorp/bionic64
vagrant init
Open the Vagrantfile and change the config.vm.box = "base" to config.vm.box = "hashicorp/bionic64"
Also mount the folder in the host where the .vdi file for the VM is located by adding the following to the Vagrant file by adding the following line(replace the file path with the correct one corresponding to your system. Here /nbd2 will be created on the ubuntu machine and will contain the files including the .vdi file.
config.vm.synced_folder "/home/topcat/VirtualBox\ VMs/your_vm", "/nbd2"
Now do vagrant up
Once the machine boots up
vagrant ssh #to ssh as vagrant
sudo su #to become root
apt-get update #This will refresh the apt cache
apt-get install qemu
modprobe nbd (to check if the module is loaded successfully. Will exit without any output if it is installed)
qemu-nbd -c /dev/nbd1 "/nbd2/box-disk001.vdi" - (Here change the path to whatever you gave in the config.vm.synced_folder property)
mkdir -p /mnt/vdi-boot
mount /dev/nbd1p1 /mnt/vdi-boot
cd /mnt/vdi-boot/etc/security (This folder will have all the files as it were in your VM)
touch limits.conf (if the file is already there, delete it)
chmod 644 limits.conf
chown root:root limits.conf
open the /mnt/vdi-boot/etc/security/nsswitch.conf file and check if the following three lines are present
passwd: files
shadow: files
group: files
umount /mnt/vdi-boot (unmounts the mounted path)
qemu-nbd -d /dev/nbd1 (disconnects from qemu-nbd)
Exit the VM and start the VM
Open another shell and try to ssh. It should go through fine this time.
I am install nfs using this command in fedora 32:
sudo dnf install nfs-utils
and then I create a dir to export storage:
[dolphin#MiWiFi-R4CM-srv infrastructure]$ cat /etc/exports
/home/dolphin/data/k8s/monitoring/infrastructure/jenkins *(rw,no_root_squash)
now I could mount this dir with root user like this:
sudo mount -t nfs -o v3 192.168.31.2:/home/dolphin/data/k8s/monitoring/infrastructure/jenkins /mnt
now I want to make a step forward to make it it avaliable to any user from any ip(the client could mount nfs without using sudo), so I first try to chown of this folder:
chown 777 jenkins
and then I want to make this jenkins folder group and user to nfsnobody:
[dolphin#MiWiFi-R4CM-srv infrastructure]$ chown -R nfsnobody jenkins
chown: invalid user: ‘nfsnobody’
and I do not find any nfsnobody content from /etc/passwd. what should I do to fix invalid user: ‘nfsnobody’ problem? should nfs-util added it automatically?
Right now nobody used by default probably after RedHat/Centos versions 8
You can simply use
chown -R nobody jenkins
Or
Change it from /etc/idmapd.conf
[Mapping]
Nobody-User = nfsnobody
Nobody-Group = nfsnobody
To put the changes into effect restart the rpcidmapd service and remount the NFSv4 filesystem:
service rpcidmapd restart
mount -o remount /nfs/mnt/point
On Red Hat Enterprise Linux 6, if the above settings have been applied and UID/GID’s are matched on server and client and users are still being mapped to nobody:nobody then a clearing of the idmapd cache may be required.
# nfsidmap -c
I am trying to setup a script that will:
Connect to a windows share
Using LOAD DATA LOCAL INFILE, upload the two files into their appropriate db tables
Umount share
Situation:
I can currently vpnc into this remote machine
Problem:
I cannot
mount -t cifs //ip.address/share /mnt/point -o username=u,password=p,port=445
mount error(110) Connection timed out
I am attempting to do this manually first
Remote server is open to port 445
Questions:
Do I even need to vpnc in first?
Do I need to do route add for the remote ip/mask/gw after vpnc?
Thank you!
The mount.cifs file is provided by the samba-client package. This can be installed from the standard CentOS yum repository by running the following command:
yum install samba samba-client cifs-utils
Once installed, you can mount a Windows SMB share on your CentOS server by running the following command:
Syntax:
mount.cifs //SERVER_ADDRESS/SHARE_NAME MOUNT_POINT -o user=USERNAME
SERVER_ADDRESS: Windows system’s IP address or hostname
SHARE_NAME: The name of the shared folder configured on the Windows system
USERNAME: Windows user that has access to this share
MOUNT_POINT: The local mount point on your CentOS server
I am mounting to a share from \\10.11.10.26\snaps
Make a directory under mount for your reference
mkdir /mnt/mymount
Now I am mounting the snaps folder from indiafps02, User name is the Domain credentials, i.e. Mydomain in this case
mount.cifs //10.11.10.26/snaps /mnt/mymount -o user=Girish.KG
Now you could see the content by typing
ls /mnt/mymount
So, after performing your task, just fire umount command
umount /mnt/mymount
That's it. You are done.
no need to install "samba" and "samba-client", only "cifs-utils" using command
yum install cifs-utils
after that in windows share the folder you would like to mount in centos if you didn't do that already ("c:\interpub\wwwroot" in my case).
make sure you share it with a specific username whom your know the password for ("netops" in my case).
create a directory in centos in which you would like to mount the windows share in to ("/mnt/cm" in my case).
after that run that simple command as a root
mount.cifs //10.16.0.160/wwwroot /mnt/cm/ -o user=netops
centos will prompt you for the windows username password.
you are done.
I am getting the following error trying to mount a nfs export.
sudo mount 192.168.1.175:/mnt/nas /mnt/c/nas
mount.nfs: No such device
Any ideas on how to fix this?
As of October 2020: You can mount nfs with wsl2, but wsl2 itself requires a hardware virtualization available. See here: https://github.com/microsoft/WSL/issues/5838
If like me you are stuck on WSL1 you can work around this issue by mapping the drive in windows. Use the Map Network Drive feature and create a drive letter for your nfs mount e.g. G:
Now in WSL you can mount that drive letter:
sudo mkdir /mnt/g
sudo mount -t drvfs G: /mnt/g
from: How to Mount Windows Network Drives in WSL
I have not tested the access speed to a drive mapped through to WSL like this but I would expect it to be slow!
The error indicates the nfs kernel modules are not loaded correctly and
also verify the exported path "/mnt/nas" exists on sever "192.168.1.175" or not.
first of all,we understand nfs is one of tctp/ip protocol, so one client and one server are needed, So our purpose is sharing a dir on windows or wsl to a another linux, that means the windows or wsl is a server, all you guys are right about wsl nfs, it doesnt work if we use the wsl nfs inside, we can make a another nfs server on windows instead of wsl, and configure the share dirs right which we can find the dirs on wsl, e.g. /mnt/d/WORK/tftpserverDir, after that we can mount successfully. those are tips of me:
make a nfs server on windows
I dowwnload from this:
https://www.hanewin.net/nfs-e.htm
configure the shared dir in exports file
D:\WORK\tftpserverDir -name:nfsroot -umask:000 -public -mapall:0
mount the share dirs on your dst linux
mount -t nfs -o nolock -o tcp -o rsize=32768,wsize=32768 172.10.10.80:/nfsroot /sdcard/mnt
I had temporary access to server and I made command
scp user#example.com:/home/textfile.txt ./
Now it is just moved to the root of server. How to download it to local machine?
You'll find it in the directory where you ran the SCP command ...