I'm using NVM to manage my Node.js versions on the system, and since I installed it my rails apps stop working.
ExecJS can't seem to find node runtime, giving the error:
Node.js (V8) runtime is not available on this system (ExecJS::RuntimeUnavailable)
what actions are needed to make NVM play well with ExecJS?
Just ran into this issue myself. Basically, NVM is nice because it allows you to install and run multiple different versions of Node on one computer without sudo privileges. Since there are multiple versions, it does not automatically load a version in your shell for you, you have to specify which one you want to use. nvm use default loads the default Node environment (instead of default you can specify a specific version) into the current shell, but this will stop working when the shell is closed. To make the change permanent, use nvm alias default node, check out this issue for more info.
In our case, we're running Rails as a "regular" user with the command
bundle exec puma -C config/puma.rb
As long as you have a "default" node set through nvm, you should be okay.
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.30.2/install.sh | bash
nvm install v0.12.7
nvm alias default v0.12.7
Next time you log in as that user, which node should indicate the path under nvm:
~/.nvm/versions/node/v0.12.7/bin/node
Likewise, Rails will pick up that node as the one to use.
Related
I believe I ran nix-env -if example.nix which changed my nix environment.
How can I undo this action?
I'm trying to run a application that is specified in my nixos config (/etc/nixos/*), however it no longer seems available (within the $PATH).
Seems it might be nix-env --switch-profile /nix/var/nix/profiles/default (according to https://nixos.org/nix/manual/#sec-profiles) ?
I run nix-env -e '*' to remove all packages from my profile installed via nix-env regularly and move anything I want to use into environment.systemPackages so all my packages are tracked in my nixos configuration declaratively. As for debugging why the application specified in your configuration.nix isn't in your path, an application specified in your configuration.nix should be symlinked to /run/current-system/sw/bin, so the first thing would be to check that the binary you're looking for is listed in there and second that is in your $PATH.
Can not get NGINX to install with passenger
Following the steps you are supposed to...
brew install passenger
Then you run the following command...
brew install nginx --with-passenger
But I get:
Error: invalid option: --with-passenger
Could not find any resources about this online, so asking here.
$ brew install nginx --with-passenger
Usage: brew install [options] formula
Install formula.
formula is usually the name of the formula to install, but it can be specified
in several different ways.
-d, --debug If brewing fails, open an interactive
debugging session with access to IRB or a
shell inside the temporary build directory
--env If std is passed, use the standard build
environment instead of superenv.If super
is passed, use superenv even if the formula
specifies the standard build environment.
--ignore-dependencies Skip installing any dependencies of any
kind. If they are not already present, the
formula will probably fail to install.
--only-dependencies Install the dependencies with specified
options but do not install the specified
formula.
--cc Attempt to compile using provided
compiler. compiler should be the name
of the compiler's executable, for instance
gcc-7 for GCC 7. In order to use LLVM's
clang, use llvm_clang. To specify the
Apple-provided clang, use clang. This
parameter will only accept compilers that
are provided by Homebrew or bundled with
macOS. Please do not file issues if you
encounter errors while using this flag.
-s, --build-from-source Compile the specified formula from source
even if a bottle is provided. Dependencies
will still be installed from bottles if
they are available.
--force-bottle Install from a bottle if it exists for the
current or newest version of macOS, even if
it would not normally be used for
installation.
--include-test Install testing dependencies required to
run brew test.
--devel If formula defines it, install the
development version.
--HEAD If formula defines it, install the HEAD
version, aka. master, trunk, unstable.
--fetch-HEAD Fetch the upstream repository to detect if
the HEAD installation of the formula is
outdated. Otherwise, the repository's HEAD
will be checked for updates when a new
stable or development version has been
released.
--keep-tmp Don't delete the temporary files created
during installation.
--build-bottle Prepare the formula for eventual bottling
during installation.
-f, --force Install without checking for previously
installed keg-only or non-migrated
versions.
-v, --verbose Print the verification and postinstall
steps.
--display-times Print install times for each formula at the
end of the run.
-i, --interactive Download and patch formula, then open a
shell. This allows the user to run
./configure --help and otherwise
determine how to turn the software package
into a Homebrew package.
-g, --git Create a Git repository, useful for
creating patches to the software.
-h, --help Show this message.
Error: invalid option: --with-passenger
This is supposed to work... so yeah.
A late answer. Obviously the documentation on the passenger site is outdated at time of this writing.
According to phusion's github site
https://github.com/phusion/passenger/issues/2187#issue-416881033
the config option --nginx-with-passenger is not valid anymore.
Instead do:
brew install nginx passenger
Addendum:
When using google search for results currently the old page comes up at the top of the list. Here's the currently maintained page with the accurate information:
https://www.phusionpassenger.com/docs/advanced_guides/install_and_upgrade/nginx/install/oss/osx.html
I am using Putty to connect to my localhost, and I don't have any problems apparently, however, when I run command rails s to start my rails 4.0.0 application from Putty, it gives me this message:
jose#jose-laptop:~/rails/dedicated-agenda$ rails s
The program 'rails' can be found in the following packages:
ruby-railties-3.2
ruby-railties-4.0
Try: sudo apt-get install
I don't get that message from the terminal though, the application starts running just fine.
I had to reinstall ubuntu so I upgraded to ubuntu 14.04 just in case you need to know.
I don't know if I am missing something in my ssh settings or how could I use rails s from Putty.
Thanks in advance.
Your PATH environment variable is set differently when you are executing programs in an interactive shell and by ssh(using putty).
Use absolute path of the program to not depend on the PATH variable.
You can also set the right PATH variable at ~/.profile file and load the updated variables using the command source ~/.profile.
Now, you should be able to run the command.
You can use the command
>which rails
to see where rails is installed on your working session.
Then you need to make sure that is in your path when you ssh in.
If you are ssh'ing in as a different use then that user may not have permission to see the rails executable.
I'm working with ec2 instances and was trying to execute a ruby script on another instance after ssh to that instance.
I have a ruby script which updates configuration files, so i need to run that script as super user. when i run the script manually on that instance, sudo ruby recreate-532d01c.rb, the error that comes is
sudo: ruby: command not found
Running simple scripts with no root permissions works, eg.ruby file_1.rb.
Using rvmsudo in place of sudo executes the script with warning,
ubuntu#ip-10-0-0-111:~$ rvmsudo ruby recreate-82bb000012.rb
Warning: can not check `/etc/sudoers` for `secure_path`, falling back to call via `/usr/bin/env`, this breaks rules from `/etc/sudoers`. Run:
export rvmsudo_secure_path=1
to avoid the warning, put it in shell initialization file to make it persistent.
In case there is no `secure_path` in `/etc/sudoers`. Run:
export rvmsudo_secure_path=0
to avoid the warning, put it in shell initialization file to make it persistent.
I tried to execute the below command from rails console of one of the instance to test and it fails to recognize ruby as command
1.9.3-p545 :002 > system("ssh -i /home/ubuntu/.ssh/own_key.pem ubuntu#**.***.***.** ruby execute-52d.rb")
bash: ruby: command not found
I tried with possible solutions over web, but could not resolve the issue. I have the same configuration running for one of my old aws acount, this is a newly created account. Not sure if this could be issue in any way as currently ec2 instances fall under vpc by default and have some changes after dec 2013
Nothing to do with your VPC. So when you run your ruby script with sudo your environment that your user is using doesn't get set for Ruby.
Sounds like you may be using rvm and you probably set it up with a 'single user' config.
Try running as your user:
which ruby
and see where your ruby executable is located at. That's what you have to make sure that when your run your script as sudo it's available in the PATH.
Worst case you would have to reinstall rvm with multiuser config which should work when you run with sudo:
user$ \curl -sSL https://get.rvm.io | sudo bash -s stable
In my application directory (on Windows) I run:
sudo pdfkit --install-wkhtmltopdf
as explained here, but I got this error:
'sudo' is not recognized as an internal or external command,
operable program or batch file.
What could be the problem ?
Sudo is a Unix specific command designed to allow a user to carry out administrative tasks with the appropriate permissions.
Windows does not have (need?) this.
Run the command with the sudo removed from the start.
sudo is a Unix/Linux command. It's not available in Windows.
sudo is used for Linux. It looks like you are running this in Windows.
That you are running Windows. Read:
http://en.wikipedia.org/wiki/Sudo
It basically allows you to execute an application with elevated privileges. If you want to achieve a similar effect under Windows, open an administrative prompt and execute your command from there. Under Vista, this is easily done by opening the shortcut while holding Ctrl+Shift at the same time.
That being said, it might very well be possible that your account already has sufficient privileges, depending on how your OS is setup, and the Windows version used.
sudo is a command for Linux so it cant be used in windows so you will get that error
Sudo is a Unix specific command designed to allow a user to carry out administrative tasks with the appropriate permissions.
Windows doesn't not have (need?) this.
Yes, windows don't have sudo on its terminal. Try using pip instead.
Install pip using the steps here.
type pip install [package name] on the terminal. In this case, it may be pdfkit or wkhtmltopdf.
Analogue to sudo in Windows is running command prompt "As Administrator" by right-clicking on it's link. Then everything you run in it will be "sudo-ed".
sudo is not for windows, its for unix/linux.
option 1: install ubuntu cli software (not OS) in windows, here is the windows store link: https://www.microsoft.com/en-in/p/ubuntu-2004/9n6svws3rx71. After installing you can use ubuntu's cli in your windows where sudo will work.
option 2: install and use gem (ruby on rails) for installing wkhtmltopdf-binary
gem install pdfkit
gem install wkhtmltopdf-binary
ref: https://github.com/pdfkit/pdfkit
option 3: you can use npm or python for wkhtmltopdf insted of ruby on rails, both modules (nodeJS python) works fluently and compatible with windows:-
https://www.npmjs.com/package/wkhtmltopdf
https://pypi.org/project/wkhtmltopdf/