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<li class="toctree-l2"><a href="#misc-tips-troubleshooting">Misc Tips, TroubleShooting</a></li>
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<li><a class="toctree-l3" href="#sending-commands-to-lxd-containers">Sending commands to LXD containers</a></li>
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<h1 id="misc-tips-troubleshooting">Misc Tips, TroubleShooting</h1>
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<h2 id="sending-commands-to-lxd-containers">Sending commands to LXD containers</h2>
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<p>Use <code>bash -c "<command>"</code> for commands with wildcards. i.e.</p>
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<pre><code class="bash">for machine in $(lxc list | grep RUNNING | awk '{print $2}') ;\
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do lxc exec "${machine}" -- bash -c "cat /etc/apt/apt.conf.d/02*" ; done
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</code></pre>
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<p>fish shell is actually a little bit cleaner</p>
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<pre><code class="fish">for machine in (lxc list | grep RUNNING | awk '{print $2}') ; \
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lxc exec $machine -- bash -c "cat /etc/apt/apt.conf.d/02*" ; end
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</code></pre>
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<pre><code class="fish"># change all their time zones
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for machine in (lxc list | grep RUNNING | awk '{print $2}') ; \
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lxc exec $machine -- bash -c "timedatectl set-timezone America/Los_Angeles" ; end
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# check to see if anyone is logged in before rebooting
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for machine in (lxc list | grep RUNNING | awk '{print $2}') ; echo ; \
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echo $machine ; lxc exec $machine -- bash -c "who" ; end
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</code></pre>
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<h2 id="move-lxd-container-to-another-server">Move LXD container to another Server</h2>
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<pre><code class="bash"># stop the container
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lxc stop <container name>
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# publish image of container to local *storage*
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lxc publish <container name> --alias <image name>
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# export the new image to tarball
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lxc image export <image name>
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# scp tarball to other box
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scp a4762b114fecee2e2bc227b9032405642c5286c02009babef7953e011e597bfe.tar.gz server:
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# on other box import the image
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lxc image import <tarball file name> --alias <image name>
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# launch container
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lxc launch <image name> <container name>
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# assign profile to container
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lxc profile assign <container name> <profile name>
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</code></pre>
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<p>Shell into the new running container, update any network interface
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configurations that you need to, and then restart the container.</p>
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<p>See also
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<a href="../lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a></p>
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<h2 id="ubuntu-mate-welcome-center-doesnt-work-for-some-repos">Ubuntu-Mate-Welcome-Center doesn't work for some repos</h2>
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<p>Perhaps your apt-cacher-ng proxy server isn't configured to allow
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traffic through from https sources. Make sure the following is
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uncommented. This applies for all PPA's that use https.</p>
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<pre><code class="conf"># /etc/apt-cacher-ng/acng.conf
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PassThroughPattern: .*
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</code></pre>
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<h2 id="quitting-mosh">Quitting Mosh</h2>
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<p>The key combination to quit mosh it <code>ctrl+6+.</code>
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Also, WTF?</p>
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<h2 id="updating-caddy-server">Updating Caddy Server</h2>
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<p>You update Caddy Server with a new Go Binary, try to restart caddy.service, and it fails.
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Maybe you get an error message such as the following <code>listen tcp :80: bind: permission denied</code> and/or
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<code>listen tcp :443: bind: permission denied</code>.<br />
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Fix this error with the following command <code>sudo setcap CAP_NET_BIND_SERVICE=+eip /path/to/caddy</code></p>
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<h2 id="zfs-disc-error-disc-identification">ZFS Disc Error Disc Identification</h2>
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<p>You created a zpool using /dev/disk-by-id to specify the devices, and now you want to figure out
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which disks are causing you trouble. For instance, your system log, <code>journalctl | grep -i fail</code>
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shows read error on /dev/sdc. </p>
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<p>You can use <code>lsblk -o MODEL,SERIAL</code> to match the information generated by <code>zpool status</code>.</p>
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<h2 id="byobutmux-copy-mode">Byobu/Tmux copy mode</h2>
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<ol>
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<li>
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<p>Enter Copy Mode </p>
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<ul>
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<li>in byobu use key <code>F7</code></li>
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<li>in tmux use <code><prefix> [</code></li>
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</ul>
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</li>
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<li>
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<p>Navigate around less/copy buffer using <code>h,j,k,l</code></p>
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</li>
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<li>
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<p>Select text</p>
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<ul>
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<li><code><space></code> begins text selection</li>
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<li>move cursor around using <code>h,j,k,l</code></li>
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<li><code><enter></code> ends text selection</li>
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</ul>
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</li>
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<li>
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<p>Paste selection in any tmux/byobu window</p>
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<ul>
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<li>in byobu use <code>alt+insert</code></li>
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<li>in tmux use <code><prefix> ]</code></li>
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</li>
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