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| computing:vmserver [2022/11/13 02:25] – oemb1905 | computing:vmserver [2023/01/22 14:12] – oemb1905 |
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| zfs list -H -o name -t snapshot | xargs -n1 zfs destroy | zfs list -H -o name -t snapshot | xargs -n1 zfs destroy |
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| Of course, off-site backups are essential. To do this, I use a small script that powers down the VM, uses ''cp'' with the ''--sparse=always'' flag to preserve space, and then uses tar with pbzip2 compression to save even more space. From my research, bsdtar seems to honor sparsity better than gnutar so install that with ''sudo apt install libarchive-tools''. The ''cp'' command is not optional, moreover, for remember tar will not work directly on an ''.img'' file. Here's a small shell script with a loop for multiple VMs within the same directory. I also added a command at the end that will delete any tarballs older than 180 days. | Of course, off-site backups are essential. To do this, I use a small script that powers down the VM, uses ''cp'' with the ''--sparse=always'' flag to preserve space, and then uses tar with pbzip2 ''sudo apt install pbzip2'' compression to save even more space. From my research, bsdtar seems to honor sparsity better than gnutar so install that with ''sudo apt install libarchive-tools''. The ''cp'' command is not optional, moreover, for remember tar will not work directly on an ''.img'' file. Here's a small shell script with a loop for multiple VMs within the same directory. I also added a command at the end that will delete any tarballs older than 180 days. |
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| DATE=`date +"%Y%m%d-%H:%M:%S"` | DATE=`date +"%Y%m%d-%H:%M:%S"` |
| Once you grab the ''sources.list'' file, install ''openssh-server'' and exchange keys, you can now use a shell to ssh into the guestOS henceforward. This means that at this point you are now in a position to create VMs and various production environments at will or start working on the one you just created. Another thing to consider is to create base VMs that have ''interfaces'' and ''ssh'' access all ready to go, and then leverage those to make new instances using ''cp''. Alternately, you can power down a base VM and then clone it as follows: | Once you grab the ''sources.list'' file, install ''openssh-server'' and exchange keys, you can now use a shell to ssh into the guestOS henceforward. This means that at this point you are now in a position to create VMs and various production environments at will or start working on the one you just created. Another thing to consider is to create base VMs that have ''interfaces'' and ''ssh'' access all ready to go, and then leverage those to make new instances using ''cp''. Alternately, you can power down a base VM and then clone it as follows: |
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| #clone existing | |
| virt-clone \ | virt-clone \ |
| --original=clean \ | --original=clean \ |
