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balena CLI FAQ & Troubleshooting
Where is the balena CLI's configuration file located?
The per-user configuration file lives in $HOME/.balenarc.yml
or %UserProfile%\_balenarc.yml
, in
Unix based operating systems and Windows respectively.
The balena CLI also attempts to read a balenarc.yml
file in the current directory, which takes
precedence over the per-user configuration file.
How do I point the balena CLI to the staging environment?
Set the BALENARC_BALENA_URL=balena-staging.com
environment variable, or add
balenaUrl: balena-staging.com
to the balena CLI's configuration file.
How do I make the balena CLI persist data in another directory?
The balena CLI persists the session token, as well as cached assets, to $HOME/.balena
or
%UserProfile%\_balena
. This directory can be changed by setting an environment variable,
BALENARC_DATA_DIRECTORY=/opt/balena
, or by adding dataDirectory: /opt/balena
to the CLI's
configuration file, replacing /opt/balena
with the desired directory.
After burning to an SD card, my device doesn't boot
Check whether the downloaded image is incomplete (download was interrupted) or corrupted.
Try clearing the cache (%HOME/.balena/cache
or C:\Users\<user>\_balena\cache
) and running the
command again.
I get a permission error when burning to an SD card
Check whether the SD card is locked (a physical switch on the side of the card).
I get connect ETIMEDOUT
with balena tunnel
Please update the CLI to the latest version. This issue was fixed in v12.38.5. For more details, see: https://github.com/balena-io/balena-cli/issues/2172
I get EINVAL errors on Cygwin
The errors may look something like this:
net.js:156
this._handle.open(options.fd);
^
Error: EINVAL, invalid argument
Some interactive widgets don't work on Cygwin
. On Windows, PowerShell or cmd.exe
are better
supported. Alternative shells are listed in the README
file.
I get Invalid MBR boot signature
when configuring a device
This error, accompanied with something like: Expected 0xAA55, but saw 0x29FE
usually indicates a corrupted device operating system image in the cache, due to bad a internet connection during the download process.
Try clearing the cache with the following command and trying again:
$ rm -rf $HOME/.balena/cache
Or in Windows:
> del /s /q %UserProfile%\_balena\cache
I get EACCES: permission denied
when logging in
The balena CLI stores the session token in $HOME/.balena
or C:\Users\<user>\_balena
in UNIX based
operating systems and Windows respectively. This error usually indicates that the user doesn't have
permissions over that directory, which can happen if the CLI was executed as the root
user.
Try resetting the ownership by running:
$ sudo chown -R <user> $HOME/.balena
Broken line wrapping / cursor behavior with balena device ssh
Users sometimes come across broken line wrapping or cursor behavior in text terminals, for example
when long command lines are typed in a balena device ssh
session, or when using text editors like vim
or nano
. This is not something specific to the balena CLI, being also a commonly reported issue
with standard remote terminal tools like ssh
or telnet
. It is often a remote shell
configuration issue (files like /etc/profile
, ~/.bash_profile
, ~/.bash_login
, ~/.profile
and the like on the remote machine), including UTF-8 misconfiguration, the use of unsupported ASCII
control characters in shell prompt formatting (e.g. the $PS1
env var) or the output of tools or
log files that use colored text. The issue can sometimes be fixed by simply resizing the client
terminal window, or by running one or more of the following commands on the shell:
export TERMINAL=linux
stty sane
shopt -s checkwinsize
bind 'set horizontal-scroll-mode off'
Terminal multiplexer tools like GNU screen
or tmux
are sometimes reported to fix the issues, though at other times they are reported as the cause of the problem. They have their own configuration files to take into account.
Further reference:
- https://stackoverflow.com/questions/1133031/shell-prompt-line-wrapping-issue
- https://superuser.com/questions/46948/any-way-to-fix-screens-mishandling-of-line-wrap-maybe-only-terminal-app
- https://unix.stackexchange.com/questions/105958/terminal-prompt-not-wrapping-correctly
- https://unix.stackexchange.com/questions/529377/terminal-long-line-wrapping
- https://github.com/microsoft/WSL/issues/1436
If nothing seems to help, consider also using a different client-side terminal application:
- Linux: xterm, KDE Konsole, GNOME Terminal
- Mac: Terminal, iTerm2
- Windows: PowerShell, PuTTY, WSL (Windows Subsystem for Linux)
"Docker seems to be unavailable" error when using Windows Subsystem for Linux (WSL)
When running on WSL, the recommendation is to install a CLI release for Linux, like the standalone
zip package for Linux. However, commands like "balena build" will, by default, attempt to reach the
Docker daemon at the Unix socket path /var/run/docker.sock
, while Docker Desktop for Windows uses
a Windows named pipe at //./pipe/docker_engine
(which the Linux CLI on WSL cannot use). A
solution is:
- Open the Docker Desktop for Windows settings panel and tick the checkbox "Expose daemon on tcp://localhost:2375 without TLS".
- On the WSL command line, set an env var:
export DOCKER_HOST=tcp://localhost:2375
Alternatively, use the command-line options-h 127.0.0.1 -p 2375
for commands likebalena build
andbalena deploy
.
Further reference: