Tomcat7 missing after bbb-demo removal

[ak4t0sh]

I have strange dependency issue while trying to install xenial-220-beta (currently 220-beta-20) on ubuntu 16.04 using bbb-install.sh :

$ wget -qO- https://ubuntu.bigbluebutton.org/bbb-install.sh | bash -s -- -v xenial-220-beta -s bbb.example.com -e myemail@example.com

=> BBB works fine

$ apt purge bbb-demo
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
authbind libcommons-collections3-java libcommons-dbcp-java libcommons-pool-java libecj-java
libservlet3.0-java libtomcat7-java tomcat7 tomcat7-common
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
bbb-demo*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 1,986 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 160178 files and directories currently installed.)
Removing bbb-demo (1:2.2.0-9) ...
Purging configuration files for bbb-demo (1:2.2.0-9) ...
root@bbb:~# bbb-conf --restart

=> BBB works fine

But if an apt autoremove is launched tomcat7 is removed and BBB do not running correctly

$ apt autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
authbind libcommons-collections3-java libcommons-dbcp-java libcommons-pool-java libecj-java
libservlet3.0-java libtomcat7-java tomcat7 tomcat7-common
0 upgraded, 0 newly installed, 9 to remove and 0 not upgraded.
After this operation, 8,291 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 160174 files and directories currently installed.)
Removing authbind (2.1.1+nmu1) ...
Removing tomcat7 (7.0.68-1ubuntu0.4) ...
Removing tomcat7-common (7.0.68-1ubuntu0.4) ...
Removing libtomcat7-java (7.0.68-1ubuntu0.4) ...
Removing libcommons-dbcp-java (1.4-5ubuntu2) ...
Removing libcommons-collections3-java (3.2.2-1) ...
Removing libcommons-pool-java (1.6-2) ...
Removing libecj-java (3.10.1-2ubuntu1) ...
Removing libservlet3.0-java (7.0.68-1ubuntu0.4) ...
Processing triggers for man-db (2.7.5-1) ...
root@bbb-000:~# bbb-conf --restart
Restarting BigBlueButton 2.2.0-beta-20 ...
Stopping BigBlueButton
Starting BigBlueButton
Job for tomcat7.service failed because the control process exited with error code. See "systemctl status tomcat7.service" and "journalctl -xe" for details.

Workaround : do not install bbb-demo at all
I have tried using PR #64 it works perfectly :)

[ffdixon]

Thanks for pointing this out. It looks like with tomcat7 removed, there is a check in

https://github.com/bigbluebutton/bigbluebutton/blob/master/bigbluebutton-config/bin/bbb-conf#L336

that looks to see if tomcat7 is still installed by checking if it's installation directory exists

    if [ -d $TOMCAT_DIR ]; then
      TOMCAT_SERVICE=$TOMCAT_USER
    fi

This logic is in correct because the directory /var/lib/tomcat7 probably still exists. If you have uninstalled tomcat7 and remove $TOMCAT_SERVICE from

https://github.com/bigbluebutton/bigbluebutton/blob/master/bigbluebutton-config/bin/bbb-conf#L392

You should have sudo bbb-conf --restart exiting without error. We'll fix this properly in the next update to BigBlueButton 2.2-beta.

[hex-m]

This problem still exists on BigBlueButton 2.2.20. Purging bbb-demo marks tomcat7 as not required anymore, the next apt autoremove removes it and bbb throws errors about missing tomcat7.

[michi-80337]

In such a case you can mark the package as manually installed before you purge bbb-demo. First look after the correct version of tomcat to keep. Finally mark the package (in your case tomcat7) as manually installed:

apt show bbb-demo | grep -e "^Depends:"
apt-mark manual tomcat7

Current versions of BigBlueButton use a different directory path and need Tomcat for API demo only, hence its de-installation with the API demo should be no problem anymore.

[saumyakswain]

@ffdixon
I'm seeing this issue on 2.5.0-rc3
Steps to reproduce:

• Install BBB 2.5 with API Demos (-a in bbb-install script)
  wget -qO- https://ubuntu.bigbluebutton.org/bbb-install-2.5.sh | bash -s -- -v focal-250 -s meet.****.net -e info@****.net -c turn.****.net:**** -a -w -g
• Remove API Demos (apt-get purge bbb-demo)
• Run bbb-install script again without -a
  wget -qO- https://ubuntu.bigbluebutton.org/bbb-install-2.5.sh | bash -s -- -v focal-250 -s meet.****.net -e info@****.net -c turn.****.net:**** -w -g

# Error: Detected some processes have not started correctly
#
# tomcat9 ———————————————► [✘ - inactive]
#