Misc Tips, TroubleShooting

Sending commands to LXD containers

Use bash -c "<command>" for commands with wildcards. i.e.

for machine in $(lxc list | grep RUNNING | awk '{print $2}') ;\
    do lxc exec "${machine}" -- bash -c "cat /etc/apt/apt.conf.d/02*" ; done

fish shell is actually a little bit cleaner

for machine in (lxc list | grep RUNNING | awk '{print $2}') ; \
    lxc exec $machine -- bash -c "cat /etc/apt/apt.conf.d/02*" ; end

# change all their time zones
for machine in (lxc list | grep RUNNING | awk '{print $2}') ; \
    lxc exec $machine -- bash -c "timedatectl set-timezone America/Los_Angeles" ; end
# check to see if anyone is logged in before rebooting
for machine in (lxc list | grep RUNNING | awk '{print $2}') ; echo ; \
    echo $machine ; lxc exec $machine -- bash -c "who" ; end 

Ubuntu-Mate-Welcome-Center doesn't work some for some repos

Perhaps your apt-cacher-ng proxy server isn't configured to allow traffic through from https sources. Make sure the following is uncommented. This applies for all PPA's that use https.

# /etc/apt-cacher-ng/acng.conf
PassThroughPattern: .*