[lxc-users] a simple apt-get update fails with: Upstart: Failed to connect to socket

[Serge Hallyn]

What does the full container configuration look like?

What distro/release/init-system are running in the container?

Quoting Ivan Ogai (lxc-users at ogai.name):
> First of all a big compliment to the LXC main developers, LXC rocks!
> 
> We have an unprivilaged container (created by a shell script) containing
> a whole development environment. I.e. we use a LXC unprivilaged
> container and a shell script as a convenient replacement for Vagrant for
> us.
> 
> A developer just tried to upgrade a package in the container named
> 'grical', and it fails as shown below.
> 
> We wonder why and how to fix it.
> 
>     stefanos at bazooka:~/grical/provisionize$ lxc-attach -n grical
>     root at grical:~/grical/provisionize# apt-get upgrade
>     Reading package lists... Done
>     Building dependency tree
>     Reading state information... Done
>     Calculating upgrade... Done
>     The following packages will be upgraded:
>     rabbitmq-server
>     1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
>     Need to get 5,042 kB of archives.
>     After this operation, 881 kB of additional disk space will be used.
>     Do you want to continue? [Y/n] y
>     Get:1 http://www.rabbitmq.com/debian/ testing/main rabbitmq-server all 3.6.1-1 [5,042 kB]
>     Fetched 5,042 kB in 10s (497 kB/s)
>     (Reading database ... 38702 files and directories currently installed.)
>     Preparing to unpack .../rabbitmq-server_3.6.1-1_all.deb ...
>     initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart-session/1000/2641: Connection refused
>     * Stopping message broker rabbitmq-server                                                initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart-session/1000/2641: Connection refused
>     invoke-rc.d: initscript rabbitmq-server, action "stop" failed.
>     dpkg: warning: subprocess old pre-removal script returned error exit status 1
>     dpkg: trying script from the new package instead ...
>     initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart-session/1000/2641: Connection refused
>     * Stopping message broker rabbitmq-server                                                 * message broker already stopped
>                                                                                     [ OK ]
>     dpkg: ... it looks like that went OK
>     Unpacking rabbitmq-server (3.6.1-1) over (3.2.4-1) ...
>     Processing triggers for ureadahead (0.100.0-16) ...
>     Setting up rabbitmq-server (3.6.1-1) ...
>     Installing new version of config file /etc/init.d/rabbitmq-server ...
>     initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart-session/1000/2641: Connection refused
>     * Starting message broker rabbitmq-server                                                initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart-session/1000/2641: Connection refused
>     invoke-rc.d: initscript rabbitmq-server, action "start" failed.
>     dpkg: error processing package rabbitmq-server (--configure):
>     subprocess installed post-installation script returned error exit status 1
>     Processing triggers for ureadahead (0.100.0-16) ...
>     Errors were encountered while processing:
>     rabbitmq-server
>     E: Sub-process /usr/bin/dpkg returned an error code (1)
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