computing:zfsreminders
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| computing:zfsreminders [2022/08/06 06:03] – oemb1905 | computing:zfsreminders [2025/02/21 02:42] (current) – oemb1905 | ||
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| + | ------------------------------------------- | ||
| + | * **zfsreminders** | ||
| + | * **Jonathan Haack** | ||
| + | * **Haack' | ||
| + | * **webmaster@haacksnetworking.org** | ||
| + | |||
| + | ------------------------------------------- | ||
| + | |||
| + | // | ||
| + | |||
| + | ------------------------------------------- | ||
| + | |||
| Create a pool on a single drive and specify a mountpoint for it. Note: use id, not uuid. | Create a pool on a single drive and specify a mountpoint for it. Note: use id, not uuid. | ||
| Line 23: | Line 35: | ||
| If you now have more than one drive, add another drive as a mirror as follows: | If you now have more than one drive, add another drive as a mirror as follows: | ||
| - | zpool attach nameofpool /dev/disk/ | + | zpool attach nameofpool |
| | | ||
| To create an encrypted dataset you generate a key and then specify the location and name of the pool as follows: | To create an encrypted dataset you generate a key and then specify the location and name of the pool as follows: | ||
| Line 34: | Line 46: | ||
| zfs load-key pool/ | zfs load-key pool/ | ||
| zfs mount pool/ | zfs mount pool/ | ||
| + | | ||
| + | If you need to delete a dataset, do the following: | ||
| + | |||
| + | zfs destroy -r pool/ | ||
| | | ||
| To create snapshots, here is a reasonable template: | To create snapshots, here is a reasonable template: | ||
| Line 44: | Line 60: | ||
| zfs list -H -o name -t snapshot | xargs -n1 zfs destroy | zfs list -H -o name -t snapshot | xargs -n1 zfs destroy | ||
| | | ||
| - | To add a zfs cache hard drive to your pool, do the following: | + | To add a zfs cache or slog hard drive to your pool, do the following: |
| zpool add pool cache / | zpool add pool cache / | ||
| + | zpool add pool log / | ||
| To view current snapshots, do the following: | To view current snapshots, do the following: | ||
| Line 66: | Line 83: | ||
| zpool status -v | zpool status -v | ||
| zpool iostat -v | zpool iostat -v | ||
| - | zpool list | + | zpool list -v |
| | | ||
| - | Also, .... | + | Also, to see whether cache volume is necessary, run and look at cache hit/miss ratio: |
| + | |||
| + | arc_summary | ||
| + | |||
| + | Change location of the keys for your encrypted datasets: | ||
| + | |||
| + | sudo zfs set keylocation=file:/// | ||
| + | |||
| + | Send and receive entire pool to new pool | ||
| + | |||
| + | zfs snapshot -r pool1@latestsnap | ||
| + | zfs send -R pool1@latestsnap | zfs receive -F pool2 | ||
| + | |||
| + | Arc information | ||
| + | |||
| + | arcstat | ||
| + | arc_summary -d | less | ||
| + | nano / | ||
| + | <# 8GB example - 8*(2^30) = below> | ||
| + | <# | ||
| + | <# Set Max ARC size => 2GB == 2147483648 Bytes> | ||
| + | <options zfs zfs_arc_max=2147483648> | ||
| + | <# Set Min ARC size => 1GB == 1073741824> | ||
| + | <options zfs zfs_arc_min=1073741824> | ||
| + | cat / | ||
| + | cat / | ||
| + | |||
| + | nmap tests and other security checks | ||
| + | |||
| + | nmap -sV --script ssl-enum-ciphers -p 443 website.com | ||
| + | nikito -h website.com | ||
| + | wpscan --url https:// | ||
| - | --- //[[jonathan@haacksnetworking.org|oemb1905]] | + | --- //[[alerts@haacksnetworking.org|oemb1905]] |
computing/zfsreminders.1659765789.txt.gz · Last modified: 2022/08/06 06:03 by oemb1905
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