I've installed Centos7 on the Google Cloud Platform, as you know there is just ssh option to connect to the machine.
Now I need to have access to its desktop(GUI) from my laptop (it's win10).
it's appreciated if anyone can help me.
Thanks in advance
you need to ssh login into your CentOS machine either from ssh button in Gcloud, or using the cloud shell:
gcloud compute ssh test-vws
then setup a password for your account:
sudo passwd `whoami`
After that, you will need to install a client that will allow you to navigate the GUI for your server.
again, on your server command line execute:
sudo yum -y update
sudo yum -y groupinstall 'Server with GUI'
once finished, follow this guige to install and setup Teradici Cloud Access Software (Remote Desktop Agent for CentOS).
Installing Teradici Cloud Access Software
On your virtual workstation, install the Teradici repositories:
sudo yum -y install https://downloads.teradici.com/rhel/teradici-repo-latest.noarch.rpm
Install Teradici Standard Agent for Linux:
sudo yum -y update
sudo yum -y install pcoip-agent-standard
Then you will have to register the Agent and create a firewall rule to allow the connection, just follow the guide, and your desktop connection will look like this:
This question has been asked before but mine is a bit different.
I want to install a bunch of rpm packages using sudo yum. I do not have internet connection on the machine I want to install them on. These packages also do not exist on any machine in the network.
Is there a way I can install them without internet connectivity and with them not anywhere on any machine in the network (so cannot use --downloadonly option) ?
if you have the RPM files on your local machine or any machine (not from network but you literally downloaded the .rpm files) then you can run
yum localinstall <path to rpm file>
you can also do
rpm -ivh <rpm file>
Is there a way I can install them without internet connectivity and
with them not anywhere on any machine in the network
No, that is called an air gap. You need to get the RPMs on the machine or network to have them installed.
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I'm using VirtualBox with OS X as host and CentOS on the guest VM.
In OS X I created folder myfolder, added it as shared folder to the VM, turned on the VM, in CentOS created folder /home/user/myfolder and typing:
sudo mount -t vboxsf myfolder /home/user/myfolder
and have output:
/sbin/mount.vboxsf: mounting failed with the error: No such device
What I'm doing wrong?
UPDATED:
Guest Additions installed.
My shared folder/clipboard stopped to work for some reason (probably due to a patch installation on my virtual machine).
sudo mount -t vboxsf Shared_Folder ~/SF/
Gave following result:
VirtualBox: mount.vboxsf: mounting failed with the error: No such device
The solution for me was to stop vboxadd and do a setup after that:
cd /opt/VBoxGuestAdditions-*/init
sudo ./vboxadd setup
You're using share folders, so you need to install VirtualBox Guest Additions inside your virtual machine to support that feature.
Vagrant
If you're using Vagrant (OS X: brew cask install vagrant), run:
vagrant plugin install vagrant-vbguest
vagrant vbguest
In case it fails, check the logs, e.g.
vagrant ssh -c "cat /var/log/vboxadd-install.log"
Maybe you're just missing the kernel header files.
VM
Inside VM, you should install Guest Additions, kernel headers and start the service and double check if kernel extension is running.
This depends on the guest operating system, so here are brief steps:
Install kernel include headers (required by VBoxLinuxAdditions).
RHEL: sudo apt-get update && sudo apt-get install kernel-devel
CentOS: sudo yum update && sudo yum -y install kernel-headers kernel-devel
Install Guest Additions (this depends on the operating system).
Ubuntu: sudo apt-get -y install dkms build-essential linux-headers-$(uname -r) virtualbox-guest-additions-iso
If you can't find it, check by aptitude search virtualbox.
Debian: sudo apt-get -y install build-essential module-assistant virtualbox-ose-guest-utils
If you can't find it, check by dpkg -l | grep virtualbox.
manually by downloading the iso file inside VM (e.g. wget) and installing it, e.g.
wget http://download.virtualbox.org/virtualbox/5.0.16/VBoxGuestAdditions_5.0.16.iso -P /tmp
sudo mount -o loop /tmp/VBoxGuestAdditions_5.0.16.iso /mnt
sudo sh -x /mnt/VBoxLinuxAdditions.run # --keep
Extra debug: cd ~/install && sh -x ./install.sh /mnt/VBoxLinuxAdditions.run
Double check that kernel extensions are up and running:
sudo modprobe vboxsf
Start/restart the service:
manually: sudo /opt/VBoxGuestAdditions*/init/vboxadd setup (add sudo sh -x to debug)
Debian: sudo /etc/init.d/vboxadd-service start
Fedora: sudo /etc/init.d/vboxdrv setup
CentOS: sudo service VBoxService start
Building the main Guest Additions module
If above didn't work, here are more sophisticated steps to fix it. This assumes that you've already VBoxGuestAdditions installed (as shown above).
The most common reason why mounting shared folder doesn't work may related to building Guest Additions module which failed. If in /var/log/vboxadd-install.log you've the following error:
The headers for the current running kernel were not found.
this means either you didn't install kernel sources, or they cannot be found.
If you installed them already as instructed above, run this command:
$ sudo sh -x /opt/VBoxGuestAdditions-5.0.16/init/vboxadd setup 2>&1 | grep KERN
+ KERN_VER=2.6.32-573.18.1.el6.x86_64
+ KERN_DIR=/lib/modules/2.6.32-573.18.1.el6.x86_64/build
So basically vboxadd script is expecting your kernel sources to be available at the following dir:
ls -la /lib/modules/$(uname -r)/build
Check if the kernel dir exists (symbolic link points to the existing folder). If it's not, please install them to the right folder (e.g. in /usr/src/kernels).
So vboxadd script can enter your kernel source directory and run make kernelrelease, get the value and compare with your current kernel version.
Here is the logic:
KERN_VER=`uname -r`
KERN_DIR="/lib/modules/$KERN_VER/build"
if [ -d "$KERN_DIR" ]; then
KERN_REL=`make -sC $KERN_DIR --no-print-directory kernelrelease 2>/dev/null || true`
if [ -z "$KERN_REL" -o "x$KERN_REL" = "x$KERN_VER" ]; then
return 0
fi
fi
If the kernel version doesn't match with the sources, maybe you've to upgrade your Linux kernel (in case the sources are newer than your kernel).
CentOS
Try:
vagrant plugin install vagrant-vbguest vagrant vbgues
If won't work, try the following manual steps for CentOS:
$ sudo yum update
$ sudo yum install kernel-$(uname -r) kernel-devel kernel-headers # or: reinstall
$ rpm -qf /lib/modules/$(uname -r)/build
kernel-2.6.32-573.18.1.el6.x86_64
$ ls -la /lib/modules/$(uname -r)/build
$ sudo reboot # and re-login
$ sudo ln -sv /usr/src/kernels/$(uname -r) /lib/modules/$(uname -r)/build
$ sudo /opt/VBoxGuestAdditions-*/init/vboxadd setup
I am able to resolved this by running below commmand
modprobe -a vboxguest vboxsf vboxvideo
In addition to #Mats answer, I'm adding some more info (it helped me on Debian 8).
My shared folder/clipboard stopped to work for some reason (probably due to a patch installation on my virtual machine).
sudo mount -t vboxsf Shared_Folder ~/SF/
Gave me following result:
VirtualBox: mount.vboxsf: mounting failed with the error: No such device
The solution for me was to stop vboxadd and do a setup after that:
cd /opt/VBoxGuestAdditions-*/init
sudo ./vboxadd setup
At this point, if you still get the following error:
No such device. The Guest Additions installation may have failed. The error has been logged in /var/log/vboxadd-install.log
You need to install linux headers:
apt-get install linux-headers-$(uname -r)
then you can install Guest Additions:
sh /media/cdrom/VBoxLinuxAdditions.run --nox11
and restart your Linux by:
reboot
then you will be able to mount your shared folder!
mount -t vboxsf Shared_Folder ~/SF/
More informations (in French), check this page.
This was the only solution what worked for me:
Install Vagrant plugin: vagrant-vbguest, which can keep your VirtualBox Guest Additions up to date.
vagrant plugin install vagrant-vbguest
Source: https://github.com/aidanns/vagrant-reload/issues/4#issuecomment-230134083
This was resolved by:
yum install gcc kernel-devel make
workaround is here: https://gist.github.com/larsar/1687725
Shared folder was earlier working for me but all f sudden it stopped working (Virualbox - host was Windows 7, Guest was OpenSuSe)
modprobe -a vboxguest vboxsf vboxvideo
then
mount -t vboxsf testsf /opt/tsf (testsf was the folder in Windows C drive which was added in Virtualbox shared folder --- and /opt/tsf is the folder in OpenSuse
My host is Windows10 my VM guest is ubuntu build by vagrant. This worked for me:
vagrant plugin install vagrant-winnfsd
The solution for me was to update guest additions
(click Devices -> Insert Guest Additions CD image)
I also had a working system that suddenly stopped working with the described error.
After furtling around in my /lib/modules it would appear that the vboxvfs module is no more. Instead modprobe vboxsf was the required incantation to get things restarted.
Not sure when that change ocurred, but it caught me out.
I am running VirtualBox 5.1.20, and had a similar issue. Here is a url to where I found the fix, and the fix I implemented:
# https://dsin.wordpress.com/2016/08/17/ubuntu-wrong-fs-type-bad-option-bad-superblock/
if [ "5.1.20" == "${VBOXVER}" ]; then
rm /sbin/mount.vboxsf
ln -s /usr/lib/VBoxGuestAdditions/mount.vboxsf /sbin/mount.vboxsf
fi
The link had something similar to /usr/lib/VBoxGuestAdditions/other/mount.vboxsf, rather than what I have in the script excerpt.
For a build script I use in vagrant for the additions:
https://github.com/rburkholder/vagrant/blob/master/scripts/additions.sh
Seems to be a fix at https://www.virtualbox.org/ticket/16670
For me, on a mac, it turned out I had an old VirtualBox image stored on my machine that didn't have metadata, so it wasn't being updated to the latest version.
That old image had an older version of the vbguest plugin installed in it, which the newer vbguest plugin on my machine couldn't work with.
So to fix it, I just removed the image that my Vagrant was based on, and then Vagrant downloaded the newer version and it worked fine.
# Remove an old version of the virtual box image that my vagrant was using
$ vagrant box remove centos/7
You can find out which boxes you have cached on your machine by running:
$ vagrant box list
I had also upgraded my vbguest plugin in my earlier attempts at getting this to work, using the following process, but I don't think this helped. FYI !
# Get rid of old plugins
vagrant plugin expunge
# Globally install the latest version of the vbguest plugin`
vagrant plugin install vagrant-vbguest
If you find bring the box fails on guest addtions, you can try doing the following to ensure the plugins install correctly. This downloads the latest based image for your system (for me CentOS), and may resolve the issue (it did for me!)
$ vagrant box update
There can be errors/incorrect approach in two scenarios. Check both of it and figure it out
SCENARIO 1 :
Once you are running the VBoxLinuxAdditions.run or VBoxSolarisAdditions.pkg or VBoxWindowsAdditions.exe , check if all the modules are getting installed properly.
1.1.a. In case of VBoxLinuxAdditions, if Building the VirtualBox Guest Additions kernel modules gets failed,
check the log file in /var/log/vboxadd-install.log . If the error is due to kernel version update your kernel and reboot the vm. In case of fedora,
1.1.b. yum update kernel*
1.1.c. reboot
1.2. If nothing gets failed, then all is fine. You are already having the expected kernel version
SCENARIO 2 :
If the VBoxGuestAdditions is installed (check for a folder /opt/VBoxGuestAdditions-* is present .... * represents version) you need to start it before mounting.
2.1. cd /opt/VBoxGuestAdditions-*/init && ./vboxadd start
You need to specify the user id and group id of your vm user as options to the mount command.
2.2.a. Getting uid and gid of a user:
id -u <'user'>
id -g <'user'>
2.2.b. Setting uid and gid in options of mount command:
mount -t vboxsf -o uid=x,gid=x shared_folder_name guest_folder
On Ubuntu this worked:
sudo apt-get install build-essential linux-headers-`uname -r` dkms
Had the same issue with VirtualBox 5.0.16/rXXX
Installed latest VirtualBox 5.0.18 and installed latest Vagrant 1.9.3, issue went toodles.
I added as root user
/etc/rc.d/rc.local
/root/mount-vboxsf.sh
then
chmod +x /etc/rc.d/rc.local
and the sample script /root/mount-vboxsf.sh (set your own the uid and gid options)
modprobe -a vboxguest vboxsf vboxvideo
mount -t vboxsf NAME_SHARED_DIRECTORY /media/sf_NAME_SHARED_DIRECTORY -o rw,uid=0,gid=0
you need add
chmod + /root/mount-vboxsf.sh
I have similar issue, check header if it's not match then run below command
CentOS: sudo yum update && sudo yum -y install kernel-headers kernel-devel
If you're on Debian:
1) remove all installed package through Virtualbox Guest Additions ISO file:
sh /media/cdrom/VBoxLinuxAdditions.run uninstall
2) install Virtualbox packages:
apt-get install build-essential module-assistant virtualbox-guest-dkms virtualbox-guest-utils
Note that even with modprobe vboxsf returning nothing (so the module is correctly loaded), the vboxsf.so will call an executable named mount.vboxsf, which is provided by virtualbox-guest-utils. Ignoring this one will prevent you from understanding the real cause of the error.
strace mount /your-directory was a great help (No such file or directory on /sbin/mount.vboxsf).
An update did the trick for me !
$ vagrant box update
$ vagrant plugin install vagrant-vbguest
Below two commands works for me.
vagrant ssh
sudo mount -t vboxsf -o uid=1000,gid=1000 vagrant /vagrant
Okay everyone is missing a basic fact.
mkdir /test - Makes sub directory in current directory.
sudo mkdir /test - Make directory in Root.
So if your shared directory name is shared and you do the following:
mkdir /test
sudo mount -t vboxsf shared /test
It generates this error:
sbin/mount.vboxsf: mounting failed with the error: No such file or directory
Because the directory is in the wrong place! Yes that's what this error is saying. The error is not saying reload the VBOX guest options.
But if you do this:
sudo mkdir ~/test
sudo mount -t vboxsf shared ~/test
Then it works fine.
It really amazes me how many people suggest reloading the Vbox guest additions to solve this error or writing a complex program to solve a directory created in the wrong place.
I have an Amazon ec2 instance in which I can login through putty. I want GUI on that instance. Please anyone help me, how can I get GUI on ec2 instance.
Install VNC and connect using VNC. View the video here.
You can also use an X11 server like MobaXTerm: http://mobaxterm.mobatek.net/ ot Xming: http://sourceforge.net/projects/xming/ (assuming you work on a PC running Windows).
login ec2 instance and execute below commands
Sudo apt-get update
Sudo apt-get install lxde
sudo start lxdm
sudo apt-get install xrdp
sudo passwd ubuntu
then open RDC
username -- hostname which you provided in putty
I have tried to install clamav in linux centos, but not able to succeed, so anybody provide me the procedure to install clamav antivirus and test the same.
Thanks in advance
First thing to do is install the program sudo apt-get install clamav
It´s necessary install the deamon program as well sudo apt-get install clamav-daemon
Once that we have the program properly installed, will be necessary configure to make it works with our app. /etc/clamav/clamd.conf
TCPAddr 127.0.0.1
TCPSocket 3310
To configure by console the antivirus just type sudo dpkg-reconfigure clamav-freshclam
Restart the service sudo /etc/init.d/clamv-* restart
For CentOS 6
Install ClamAV via yum epel repo:
yum install clamd
Edit config file:
vim /etc/clamd.conf
ExtendedDetectionInfo yes
ExcludePath /usr/local/maldetect/
DetectPUA yes
Set to start on boot:
chkconfig clamd on
Update ClamAV prior to a scan:
freshclam
Start ClamAV:
service clamd start
Add the cron for daily automatic scans:
vim /etc/cron.daily/daily-clamscan
#!/bin/bash
SCAN_DIR="/"
LOG_FILE="/var/log/clamav/daily-clamscan.log"
/usr/bin/clamscan -i -r $SCAN_DIR >> $LOG_FILE
Set proper cron permissions:
sudo chmod +x /etc/cron.daily/daily-clamscan
Update the logrotate file to look for all logs via wildcard
vim /etc/logrotate.d/daily-clamscan
/var/log/clamav/daily-clamscan.log {
missingok
notifempty
create 644 clam clam
}
Thats how I installed it on my machine. Here are a few good quick commands or you can use the cron to manually run it. I also installed Linux Malware Detect (LMD) with it so I can do more for my scans.
Full System Scan that only displays infected files and runs in the background with bell
Use jobs command to view status
clamscan -r --bell -i / &