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After over a month, I have managed to piece together how to setup an AWS EC2 server. It has been very hard to upload files as there are very conservative (size) limits when done via the upload button in Rstudio Server. The error message when this is attempted is "Unexpected empty response from server".
I am not unique in this respect e.g. Trouble Uploading Large Files to RStudio using Louis Aslett's AMI on EC2
I have managed to use the following commands through putty and this has allowed me to upload files via either filezilla or winscp.
sudo chown -R ubuntu /home/rstudio
sudo chmod -R 755 /home/rstudio
Once I use these commands and log out, I can no longer access rstudio on the instances in future logins. I can relogin to my instances via my browser, but I get the error message:
Error Occurred During Transmission
Everything is fine other than once I use Putty I lose browser access to my instances.
I think this is because the command is change of ownership or similar. Should I be using a different command?
If I don't use a command I cannot connect between filezilla/winscp and the instance.
If anyone is thinking of posting a comment that this should be closed as it is a hardware issue, I don't have a problem with hardware. I am interested in the correct coded commands.
Thank you :)
Ok so eventually I realised what was going on here. The default home directory size for AWS is less than 8-10GB regardless of the size of your instance. As this as trying to upload to home then there was not enough room. An experienced linux user would not have fallen into this trap, but hopefully any other windows users new to this who come across this problem will see this. If you upload into a different drive on the instance then this can be solved. As the Louis Aslett Rstudio AMI is based in this 8-10GB space then you will have to set your working directory outside this, the home directory. Not intuitively apparent from Rstudio server interface. Whilst this is an advanced forum and this is a rookie error I am hoping no one deletes this question as I spent months on this and I think someone else will too.
Don't change the rights of /home/rstudio unless you know what you are doing, this may cause unexpected issues (and it actually does cause issues in your case). Instead, copy the files with filezilla or winscp to a temporary file (let say /tmp), then ssh to your instance with putty and move the file to the rstudio directory with sudo (e.g sudo mv /tmp/myfile /home/rstudio).
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I have a flask app deployed on a Ubuntu server. I use Nginx, and Gunicorn3. I know from this StackOverflow post that one of the correct ways to have the app running continuously on the server is to use something like:
gunicorn3 app:application --workers 3 --bind=127.0.0.1:1001 --daemon
But to be completely safe, since there are many other processes running on that server, I would like to find a way to check whether this process IS indeed running, and if it is NOT running (for whatever reasons) then to start it again.
In addition to that question, to make the app working at reboot, I use the following cronjob:
#reboot bash ~/restart_processes.sh
Where the .sh file executes the command line given above for starting Gunicorn3. Is this good practice or is there a better way to achieve the same result?
Thank you!
Kind regards,
I always use to deploy it in production with supervisorctl + nginx. Check this tutorial . You can simply start, restart or stop with a command.
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I've got a newly deployed Google Cloud f1-micro VM Instance using the Google Click to Deploy Wordpress solution. I've done some basic configurations such as a static IP, DNS config, persistent disk, etc. I also imported data from a previous Wordpress install.
The issue is that about every 10-15 minutes the server crashes and becomes unresponsive. Error 500 when trying to view any page, and SSH becomes unreachable. The console shows the VM Instance is still running though. I have to Reset the VM Instance, and then everything is restored within a few seconds. CPU usage is almost always below 50%. The site currently has almost zero traffic, just me testing it.
Any idea what may be causing it to freeze/crash so often? I know the f1-micro is not a powerful server, but I've read a lot about running Wordpress on it and it seems like it should be able to handle a low traffic website.
You can see system log from console in Web UI
Or you can use CLI
gcloud compute --project={your project id} instances get-serial-port-output {vm name}
f1-micro only have 0.2core and 0.60 memory. it can not support both wordpress and mysql. I think it out of memory, and system keep kill your process (mysql or wordpress). I suggestion you upgrade to bigger vm.
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I have recently set up RStudio on an AMI ec2 instance using the process generously laid out by Louis Aslet from his website. But in an embarrassing turn of events I can't access the data I need because it resides on my personal computer. I am new to cloud computing and have 0 functional knowledge of Linux, but I do know SQL, and R well. Any help or suggestions would be greatly appreciated.
Have you tried the "Upload" button in the "Files" window of Rstudio?
use scp in terminal.
To put files from your remote server
Example: if the files are located locally in ~/mylocalfolder and you want to put them in /home/rstudio/mydata you would execute in terminal:
scp ~/mylocalfolder/*.csv ubuntu#<your address>:/home/rstudio/myData/
Note that if you want to access them under a different user, eg, rstudio, you need to change owners on the files. Use chown
To grab data from your remote server
Example: if the files are located on /home/rstudio/mydata and you want to put them locally in ~/mylocalfolder you would use
scp ubuntu#<your address>:/home/rstudio/myData*.Rda ~/mylocalfolder
I use the RStudio AMI all the time and what works for me is to use Dropbox. I can't remember exactly how I did it but I think I may have started the shell from within RStudio and installed Dropbox from the command line.
This link has a little more info:
http://www.louisaslett.com/RStudio_AMI/#comment-1041983219
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I want some more insights into my wordpress site so I signed up for a New Relic account. But they're asking me to install some agent by typing in commands and I have no idea where to do that or how to access a command line.
I use shared hosting with Bluehost so I have access to cPanel. I've never typed anything into a console to manage the server - the icons have covered everything I need. So far.
Is it even possible to install this on my shared hosting plan? If so, where do I get the command prompt, do I need FTP? I've tried to follow the instructions, but there're some strange words like "yum", "rpm" and what not. What are these, and how do I run them?
Is there a wordpress plugin that I can just install and have everything done automatically for me?
If anyone could point me to some clear step by step instructions as to how to go about this, I'd be very grateful...
Thanks!
What you need is shell access. According to their features page at http://www.bluehost.com/cgi/info/hosting_features, they support shell access via SecureShell (SSH). This is fairly common.
Download an SSH client like PutTTY and connect to yourdomain.com, or if you are on a Mac, open the Terminal app and type "ssh yourdomain.com" (with your web site's domain name). You can then run commands.
However, this probably will not get you what you need. You mentioned yum and rpm commands, which are system-level software installation tools. You'll need root access to do that, which you certainly cannot do on a shared hosting account.
These types of tools are really intended for application service providers. I'm fairly familiar with New Relic's products. I'm guessing you are trying to install the server monitor tool. You probably don't need to worry about that one since Bluehost should be monitoring their servers for you.
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I'm getting error as below when tried to install a software on ubuntu in VM.
I could download any software if i'm a root user. But i forget my password now. Is there any way to renew the password of the root without uninstalling. please help.
could not open lock file /var/lib/dpkg/lock -open (13:permission denied)
unable to lock the administration directory (/var/lib/dpkg) , are you root?
Have a peek at This Link there is but you need to boot into single user mode (it is possible, but if this is a virtual then you'll need access to the host machine. If you don't have access to the host machine then I'm afraid you're out of luck :|
I assume your bootloader is Grub (likely, as you're using Ubuntu), so try pressing space (any key should work, even Ctrl) during bootup. Than, press e to edit the current boot entry, move the cursor to the end of the line which has kernel in it, and add init=/bin/bash. Press Ctrl-X and wait until shell prompt. Than, do a mount -o remount,rw /. Now you have a root account on a writable root partition. Do passwd, set the password, do mount -o remount,ro / and reboot. That's it.
Sometimes a simple reboot works for it. Try it before using any other options.