mirror of
https://github.com/TrentSPalmer/trentdocs_website.git
synced 2024-11-23 08:01:30 -08:00
100 lines
3.1 KiB
Markdown
100 lines
3.1 KiB
Markdown
# Misc Tips, TroubleShooting
|
|
|
|
## Sending commands to LXD containers
|
|
|
|
Use `bash -c "<command>"` for commands with wildcards. i.e.
|
|
|
|
```bash
|
|
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
|
|
|
|
```fish
|
|
for machine in (lxc list | grep RUNNING | awk '{print $2}') ; \
|
|
lxc exec $machine -- bash -c "cat /etc/apt/apt.conf.d/02*" ; end
|
|
```
|
|
|
|
```fish
|
|
# 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
|
|
```
|
|
|
|
## Move LXD container to another Server
|
|
|
|
```bash
|
|
# stop the container
|
|
lxc stop <container name>
|
|
# publish image of container to local *storage*
|
|
lxc publish <container name> --alias <image name>
|
|
# export the new image to tarball
|
|
lxc image export <image name>
|
|
# scp tarball to other box
|
|
scp a4762b114fecee2e2bc227b9032405642c5286c02009babef7953e011e597bfe.tar.gz server:
|
|
# on other box import the image
|
|
lxc image import <tarball file name> --alias <image name>
|
|
# launch container
|
|
lxc launch <image name> <container name>
|
|
# assign profile to container
|
|
lxc profile assign <container name> <profile name>
|
|
```
|
|
|
|
Shell into the new running container, update any network interface
|
|
configurations that you need to, and then restart the container.
|
|
|
|
See also
|
|
[LXD Container Home Server Networking For Dummies](lxd_container_home_server_networking_for_dummies.md)
|
|
|
|
## Ubuntu-Mate-Welcome-Center doesn't work 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.
|
|
|
|
```conf
|
|
# /etc/apt-cacher-ng/acng.conf
|
|
PassThroughPattern: .*
|
|
```
|
|
|
|
## Quitting Mosh
|
|
|
|
The key combination to quit mosh it `ctrl+6+.`
|
|
Also, WTF?
|
|
|
|
## Updating Caddy Server
|
|
|
|
You update Caddy Server with a new Go Binary, try to restart caddy.service, and it fails.
|
|
Maybe you get an error message such as the following `listen tcp :80: bind: permission denied` and/or
|
|
`listen tcp :443: bind: permission denied`.
|
|
Fix this error with the following command `sudo setcap CAP_NET_BIND_SERVICE=+eip /path/to/caddy`
|
|
|
|
## ZFS Disc Error Disc Identification
|
|
|
|
You created a zpool using /dev/disk-by-id to specify the devices, and now you want to figure out
|
|
which disks are causing you trouble. For instance, your system log, `journalctl | grep -i fail`
|
|
shows read error on /dev/sdc.
|
|
|
|
You can use `lsblk -o MODEL,SERIAL` to match the information generated by `zpool status`.
|
|
|
|
## Byobu/Tmux copy mode
|
|
|
|
1. Enter Copy Mode
|
|
* in byobu use key `F7`
|
|
* in tmux use `<prefix> [`
|
|
|
|
2. Navigate around less/copy buffer using `h,j,k,l`
|
|
|
|
3. Select text
|
|
* `<space>` begins text selection
|
|
* move cursor around using `h,j,k,l`
|
|
* `<enter>` ends text selection
|
|
|
|
4. Paste selection in any tmux/byobu window
|
|
* in byobu use `alt+insert`
|
|
* in tmux use `<prefix> ]`
|