App Install

Occasionally Amahi applications fail to install properly. This is often noted by error messages in the application install log (/var/log/amahi-app-install.log).

=======  app install begin      @  2014-05-03 07:42:37 -0500 ==========
Installing   app id qf1tweahyo under /var/hda/platform/html/script/.. ENV=produc
tion
NOTICE: redirected 'http://downloads.sourceforge.net/project/linfo/Linfo%20Stabl
e%20Releases/linfo-1.11.tar.gz' --> 'http://iweb.dl.sourceforge.net/project/linf
o/Linfo%20Stable%20Releases/linfo-1.11.tar.gz' ...
file /var/hda/tmp/amahi-download-cache/9306c736dc7197b9a3ed6b4c9395d4ab6e779a48
written in cache
Your HDA services have been restarted.
Your HDA services have been restarted.
mv: cannot stat ‘unpack’: No such file or directory
sed: can't read html/config.inc.php: No such file or directory
chown: cannot access ‘html/lib’: No such file or directory
/tmp/run_script20140503-14160-1huv0uh: line 47: html/config.inc.php: No such fil
e or directory
App: Linfo installed
=======  app install end        @  2014-05-03 07:42:43 -0500 ==========

Other times, you may receive notice in the Dashboard.

We take these seriously and have incorporated additional error checking/prevention methods. Unfortunately they don't catch everything.

Reasons for Failure

Reasons for failure vary, but the most common are:

• Network connection
• Install script:
  • Taking too long

    =======  app install begin      @  2014-05-03 14:33:00 -0400 ==========
    Installing   app id yi7uxa8mlb under /var/hda/platform/html/script/.. ENV=production
    Your HDA services have been restarted.
    Your HDA services have been restarted.
    NOTE: file /var/hda/tmp/amahi-download-cache/956319338e8752e6a8f544423df61187d8b7e320 written in cache
    /var/hda/platform/html/lib/system_utils.rb:66:in `run_script': run_script had to 
    KILL this script. it was taking too long. sorry. (RuntimeError)
            from /var/hda/platform/html/app/models/app.rb:241:in `block in install_bg'
            from /var/hda/platform/html/app/models/app.rb:240:in `chdir'
            from /var/hda/platform/html/app/models/app.rb:240:in `install_bg'
            from /var/hda/platform/html/script/install-app:86:in `install_or_uninstall'
            from /var/hda/platform/html/script/install-app:107:in `main'
            from /var/hda/platform/html/script/install-app:119:in `<main>'

  • Incorrect syntax
  • Insufficient privileges
• Application source file is unavailable:
• New version
• File moved
• Wrong SHA1 hash

  WARNING: primary downloaded file /tmp/amahi-download-
  cache/b224eae4f30c011cbe6eae3c81d662f199eaa85f did not pass signature check - got 
  2da58737f99c63f47983db27789cf4b989975220, expected 
  b224eae4f30c011cbe6eae3c81d662f199eaa85f

Recipe for Success

There are some recommendation users can follow to help correct or prevent these problems.

DON'T

1. Refresh your web browser or navigate from the page while an application is installing.
2. Try to install an application after it initially fails. Need to diagnose issue.

DO

1. Look at the log for details of why the app install failed.
2. View the Dashboard Apps tab, Installed section for the app.
3. Check /var/hda/web-apps to ensure the app did not partially install.
4. Search the forums for a similar issue and potential solution.
5. Visit the IRC, #amahi channel for immediate assistance.
6. Submit a bug report. Provide details to help with debugability of the issue.

Failed Install Clean Up

NOTE: We will use owncloud as an example of the application that failed to install.

An application install was unsuccessful, but it appears partially installed. This often happens and repeatedly trying to install without clean up results in multiple failed attempts. For example, 4 failed attempts of ownCloud would create owncloud, owncloud1, owncloud2, owncloud3.

To return your HDA to a safe state for another install attempt, the following may help:

• Navigate to Network>DNS Aliases in the Amahi Dashboard
  • Make note of the URL name
  • Remove entry for the failed application by selecting Delete

• The next steps must be done from the command line as root user:
• Navigate to /etc/httpd/conf.d and determine file name to remove
ls -al
• Remove ####-app.conf (substitute the number for #### and URL name for app) file
cd /etc/httpd/conf.d rm -rf 1001-owncloud.conf
• Then as root user, restart apache
sysemctl restart httpd
• Next, navigate to /var/hda/web-apps
cd /var/hda/web-apps
• Remove the app directory
rm -rf owncloud

• Finally check the HDA database (hda_production, apps table). The safest way is to use a web application such as Adminer or phpMyAdmin.
  • Look to see if there is an entry for the app that failed to install correctly.
  • Remove the row(s) that exist for the application

EXAMPLE

MariaDB [hda_production]> select id,name from webapps;
+----+------------+
| id | name       |
+----+------------+
|  1 | phpsysinfo |
|  4 | owncloud   |
|  5 | owncloud1  |
|  6 | owncloud2  |
|  7 | owncloud3  |
+----+------------+
5 rows in set (0.00 sec)

Once these steps are complete, it should be safe to try and install the application. Monitor the /var/log/amahi-app-installer.log file for progress and errors via command line:

tail -f /var/log/amahi-app-installer.log