parallelvirtualcluster
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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 2021-08-05 04:29:24 -04:00
parent 4ddb1f2675
commit 786314d392
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 "This LiveCD will install a PVC node base system ready for bootstrapping with 'pvc-ansible'."
echo
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 " then re-running it by calling /install.sh in the resulting shell."
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 " then re-running it by calling /install.sh in the resulting shell."
echo
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 "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 "recommended minimum size."
echo "NOTE: This disk should generally be a RAID-1 volume configured in hardware for"
echo "maximum redundancy and resiliency."
echo "* NOTE: PVC requires a disk of at least 30GB to be installed to, and 100GB is the"
echo "recommended minimum size for optimal production partition sizes."
echo "* NOTE: For optimal performance, this disk should be high-performance flash (SSD, etc.)."
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 "Available disks:"
echo
@ -74,6 +75,13 @@ while [[ ! -b ${target_disk} ]]; do
echo "Please enter a valid target disk."
continue
fi
blockdev_size="$(( $( blockdev --getsize64 ${target_disk} ) / 1024 / 1024 / 1024 - 1))"
if [[ ${blockdev_size} -lt 30 ]]; then
echo
echo "The specified disk is too small (<30 GB) to use as a PVC system disk."
echo "Please choose an alternative disk."
continue
fi
echo
done
@ -86,7 +94,7 @@ interfaces="$(
)"
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 "installer."
echo "installer with ^C and '/install.sh'."
echo
echo "Available interfaces:"
echo
@ -279,20 +287,14 @@ if [[ ${blockdev_size} -ge 100 ]]; then
size_ceph_lv="8"
size_zookeeper_lv="32"
size_swap_lv="16"
echo "found optimal sized disk, using partition sizes 32/8/32/16."
elif [[ ${blockdev_size} -ge 62 ]]; then
# Minimum sized disk (>=64GB), use small partitions
size_root_lv="16"
echo "found large disk (>=100GB), using optimal partition sizes."
elif [[ ${blockdev_size} -ge 30 ]]; then
# Minimum sized disk (>=30GB), use small partitions
size_root_lv="8"
size_ceph_lv="4"
size_zookeeper_lv="16"
size_swap_lv="16"
echo "found minimum sized disk, using partition sizes 16/4/16/16."
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
size_zookeeper_lv="8"
size_swap_lv="8"
echo "found small disk (>=30GB), using small partition sizes."
fi
echo -n "Disabing existing volume groups... "