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pvc-installer
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Reformat notes and tweak base disk size again 

Allow ~30GB disks to be used, since these are rare and 32GB is a common
SD card/MMC size.
This commit is contained in:
Joshua Boniface 2023-09-01 15:41:55 -04:00
parent 61f7357476
commit b3b6168873
1 changed files with 23 additions and 21 deletions
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44
install.sh
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@ -26,9 +26,9 @@ echo "-----------------------------------------------------"
echo echo
echo "This LiveCD will install a PVC node base system ready for bootstrapping with 'pvc-ansible'." echo "This LiveCD will install a PVC node base system ready for bootstrapping with 'pvc-ansible'."
echo echo
echo "NOTE: If you make a mistake and need to restart the installer while answering" echo "* NOTE: If you make a mistake and need to restart the installer while answering"
echo " the questions below, you may do so by typing ^C to cancel the script," echo " the questions below, you may do so by typing ^C to cancel the script,"
echo " then re-running it by calling /install.sh in the resulting shell." echo " then re-running it by calling /install.sh in the resulting shell."
echo echo
echo "1) Please enter a fully-qualified hostname for the system. This should match the hostname" echo "1) Please enter a fully-qualified hostname for the system. This should match the hostname"
@ -57,10 +57,11 @@ disks="$(
echo "2) Please enter the disk to install the PVC base system to. This disk will be" echo "2) Please enter the disk to install the PVC base system to. This disk will be"
echo "wiped, an LVM PV created on it, and the system installed to this LVM." echo "wiped, an LVM PV created on it, and the system installed to this LVM."
echo "NOTE: PVC requires a disk of at least 64GB to be installed to. 100GB is the" echo "* NOTE: PVC requires a disk of at least 30GB to be installed to, and 100GB is the"
echo "recommended minimum size." echo "recommended minimum size for optimal production partition sizes."
echo "NOTE: This disk should generally be a RAID-1 volume configured in hardware for" echo "* NOTE: For optimal performance, this disk should be high-performance flash (SSD, etc.)."
echo "maximum redundancy and resiliency." echo "* NOTE: This disk should be a RAID-1 volume configured in hardware, or a durable storage"
echo "device, maximum redundancy and resiliency."
echo echo
echo "Available disks:" echo "Available disks:"
echo echo
@ -74,6 +75,13 @@ while [[ ! -b ${target_disk} ]]; do
echo "Please enter a valid target disk." echo "Please enter a valid target disk."
continue continue
fi fi
blockdev_size="$(( $( blockdev --getsize64 ${target_disk} ) / 1024 / 1024 / 1024 - 1))"
if [[ ${blockdev_size} -lt 30 ]]; then
echo
echo "The specified disk is too small (<30 GB) to use as a PVC system disk."
echo "Please choose an alternative disk."
continue
fi
echo echo
done done
@ -86,7 +94,7 @@ interfaces="$(
)" )"
echo "3a) Please enter the primary network interface for external connectivity. If" echo "3a) Please enter the primary network interface for external connectivity. If"
echo "no entries are shown here, ensure a cable is connected, then restart the" echo "no entries are shown here, ensure a cable is connected, then restart the"
echo "installer." echo "installer with ^C and '/install.sh'."
echo echo
echo "Available interfaces:" echo "Available interfaces:"
echo echo
@ -279,20 +287,14 @@ if [[ ${blockdev_size} -ge 100 ]]; then
size_ceph_lv="8" size_ceph_lv="8"
size_zookeeper_lv="32" size_zookeeper_lv="32"
size_swap_lv="16" size_swap_lv="16"
echo "found optimal sized disk, using partition sizes 32/8/32/16." echo "found large disk (>=100GB), using optimal partition sizes."
elif [[ ${blockdev_size} -ge 62 ]]; then elif [[ ${blockdev_size} -ge 30 ]]; then
# Minimum sized disk (>=64GB), use small partitions # Minimum sized disk (>=30GB), use small partitions
size_root_lv="16" size_root_lv="8"
size_ceph_lv="4" size_ceph_lv="4"
size_zookeeper_lv="16" size_zookeeper_lv="8"
size_swap_lv="16" size_swap_lv="8"
echo "found minimum sized disk, using partition sizes 16/4/16/16." echo "found small disk (>=30GB), using small partition sizes."
else
# Extremely small disk, (<64GB) - bail out, this is too small
echo
echo "FAILURE - The specified disk is too small (<16GB). PVC must be installed on a disk of >16GB."
read
exit 1
fi fi
echo -n "Disabing existing volume groups... " echo -n "Disabing existing volume groups... "