I'd like to SSH from Eclipse Che to a development server I have setup, to edit code on that dev server. I can see that Che supports SSHing into Che from other machines, but how do I mount via SSHFS or something, a remote directory into Che?
You can do volume mounts in Che - the docs cover it here: https://eclipse.org/che/docs/devops/volume-mounts/index.html
For your scenario you might need to create a mount to your remote server from the server where Che is running then follow the docs instructions to mount that local directory into Che.
Do you really need to mount container FS? What kind of data is to be mounted? If it's just projects, they are backed up on a host file system.
Related
I am using Canonical's Multipass on a Raspberry Pi with LXD driver to start virtual machines (VMs). Given my configuration, I need to view real-time changes/updates happening in the virtual machine on the host, i.e. externally from the virtual machine. The current way I can do this is by unmounting and mounting the VM image file (.img file) from time to time which is not ideal.
Is there a way of doing a real-time follow-up on the changes with the .img file?
After reaching out to the LXD project team (thanks Thomas Parrott
) the best way is not to mount the .img file but to use lxc. Given how Multipass is installed using the LXD driver we can access the VM with lxc exec <instance> --project multipass -- <cmd> <args>.
There are some similar posts but this is specifically related to running Postgres with WSL2 backend on Docker desktop. WSL2 brings full Linux experience on Windows. Volumes can be mounted to both Windows and Linux file systems. But the best practice is to use Linux file system for performance reasons see docker documentation.
Performance is much higher when files are bind-mounted from the Linux filesystem, rather than remoted from the Windows host. Therefore avoid docker run -v /mnt/c/users:/users (where /mnt/c is mounted from Windows).
Instead, from a Linux shell use a command like docker run -v ~/my-project:/sources where ~ is expanded by the Linux shell to $HOME.
My WSL distro is Ubuntu 20.04 LTS. I'm bind mounting Postgres data directory to a directory on Linux filesystem and I'm also configuring the Postgres PGDATA to use a sub-directory because this is instructed on the official Docker image docs:
PGDATA
This optional variable can be used to define another location - like a subdirectory - for the database files. The default is /var/lib/postgresql/data. If the data volume you're using is a filesystem mountpoint (like with GCE persistent disks) or remote folder that cannot be chowned to the postgres user (like some NFS mounts), Postgres initdb recommends a subdirectory be created to contain the data.
So this is how I start Postgres with the volume mounting to WSL2 Ubuntu file system:
docker run -d \
--name some-postgres -e POSTGRES_PASSWORD=root \
-e PGDATA=/var/lib/postgresql/data/pgdata \
-v ~/custom/mount:/var/lib/postgresql/data \
postgres
I can exec into the running container and verify that the data folder exists and it's configured correctly:
Now from the host machine (WSL2 Linux) if I try to access that folder I get the permission denied:
I would appreciate if anyone can provide a solution. None of the existing posts worked to resolve the issue.
This has got nothing to do with PostgreSQL. Docker containers run as root and so any directory created by Docker will also belong to root.
When you attach to the container and list the directory under /var/lib/postgresql/data it shows postgres as the owner.
Check "Arbitrary --user Notes" section in the official documentation here
The second option "bind-mount /etc/passwd read-only from the host" worked for me.
Two things that were blocking us working with WSL2 on Windows were:
Folder c:\Program files\WindowsApps didn't have admin account listed as owner
McAfee was blocking the WSL. In order to disable blocking we had to remove following rule: Open McAfee -> Threat Prevention -> Show Advanced (button in Right upper corner) -> scroll down to Rules -> name of the rule is "Executing Subsystem for Linux"
I am running Centos 7 x86-64. I installed a guest (again Centos 7) through kickstart as an exercise. I prepared my kickstart file, I validated it and I launched with virt-install.
If something went wrong with the network configuration (During install I got no problem, I created a local repo on Host FTP server as source for the install) how can I connect to the machine?
Only SSH or virsh foresee some other connection method?
How can I find my machine running network configuration from outside?
I am running a barebone Centos7 installation so only command line, no graphical interface at all.
Thanks,
M.
You can ssh to your physical host from another one having graphical interface with X forwarding enabled (ssh -X machinename), and look at the the VM with virt-manager
You will need X running on the machine you're connecting from. For Mac OS it's XQuartz
I am running Docker on windows and I have a database with some entries on disk at C:\data\db.
I want to add this database to my container. I have tried numerous ways to do this but failed.
I tried: docker run -p 27017:27017 -v //c/data/db:/data/db --name mongodb devops-mongodb
In my dockerfile I have:
RUN mkdir -p /data/db
VOLUME /data/db
But this doesn't add my current database on disk to the container. It creates a fresh /data/db directory and persists the data I add to it.
The docs here https://docs.docker.com/userguide/dockervolumes/ under 'Mount a host directory as a data volume' specifically told me to execute the -v //c/data/db:/data/db but this isn't working.
Any ideas?
You're using Boot2Docker (which runs inside a Virtual Machine). Boot2Docker uses VirtualBox guest additions to make directories on your Windows machine available to Docker running inside the Virtual Machine.
By default, only the C:\Users directory (on Windows), or /Users/ directory (on OS X) is shared with the virtual machine. Anything outside those directories is not shared with the Virtual Machine, which results in Docker creating an empty directory at the specified location for the volume.
To share directories outside C:\Users\ with the Virtual Machine, you have to manually configure Boot2Docker to share those. You can find the steps needed in the VirtualBox guest addition section of the README;
If some other path or share is desired, it can be mounted at run time by doing something like:
$ mount -t vboxsf -o uid=1000,gid=50 your-other-share-name /some/mount/location
It is also important to note that in the future, the plan is to have any share which is created in VirtualBox with the "automount" flag turned on be mounted during boot at the directory of the share name (ie, a share named home/jsmith would be automounted at /home/jsmith).
Please be aware that using VirtualBox guest additions have a really bad impact on performance (reading/writing to the volume will be really slow). Which could be fine for development, but should be used with caution.
Netbean is great and I use it with FTP remote connection all the time. However, one of my client currently only have a SSH connection. Is there anyway to connect to it and up/down files?
Like it was mentioned, SFTP is supported in Netbeans by default.
So select "remote connection" in your project's run configuration and use your SSH connection information (host, login and pass). You don't have to provide any private key file.
I've had luck using sshfs (ssh file system) on ubuntu. I create created a mount folder in my home folder and run the following
$ sshfs domain\\user#server:/path/to/remote/folder ~/mount/local-mount-point
From there I start a new (or existing) project in Netbeans at that local folder ~/mount/local-mount-point
For a nicer set up, do a key exchange between your local box and the server (ssh-copy-id) for password-less ssh connections. Then, put the above command line in your .bashrc file.
I do the same as Richard.
In general is easier just to mount the remote filesystem and use netbeans in the mounted directory.
I just do the following :
sudo sshfs -o allow_other root#www.khosmos.com:/var/www/html /mnt/droplet/