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#!/bin/bash
set -eu
check_cluster()
{
if pcs status 2>&1 | grep -E '(cluster is not currently running)|(OFFLINE:)'; then
echo_error "ERROR: upgrade cannot start with some cluster nodes being offline"
exit 1
fi
}
check_pcsd()
{
if pcs status 2>&1 | grep -E 'Offline'; then
echo_error "ERROR: upgrade cannot start with some pcsd daemon offline"
exit 1
fi
}
check_disk_for_mysql_dump()
{
# Where to backup current database if mysql need to be upgraded
MYSQL_BACKUP_DIR=/var/tmp/mysql_upgrade_osp
MYSQL_TEMP_UPGRADE_BACKUP_DIR=/var/lib/mysql-temp-upgrade-backup
# Spare disk ratio for extra safety
MYSQL_BACKUP_SIZE_RATIO=1.2
# Shall we upgrade mysql data directory during the stack upgrade?
if [ "$mariadb_do_major_upgrade" = "auto" ]; then
ret=$(is_mysql_upgrade_needed)
if [ $ret = "1" ]; then
DO_MYSQL_UPGRADE=1
else
DO_MYSQL_UPGRADE=0
fi
echo "mysql upgrade required: $DO_MYSQL_UPGRADE"
elif [ "$mariadb_do_major_upgrade" = "no" ]; then
DO_MYSQL_UPGRADE=0
else
DO_MYSQL_UPGRADE=1
fi
if [ "$(hiera -c /etc/puppet/hiera.yaml bootstrap_nodeid)" = "$(facter hostname)" ]; then
if [ $DO_MYSQL_UPGRADE -eq 1 ]; then
if [ -d "$MYSQL_BACKUP_DIR" ]; then
echo_error "Error: $MYSQL_BACKUP_DIR exists already. Likely an upgrade failed previously"
exit 1
fi
mkdir "$MYSQL_BACKUP_DIR"
if [ $? -ne 0 ]; then
echo_error "Error: could not create temporary backup directory $MYSQL_BACKUP_DIR"
exit 1
fi
# the /root/.my.cnf is needed because we set the mysql root
# password from liberty onwards
backup_flags="--defaults-extra-file=/root/.my.cnf -u root --flush-privileges --all-databases --single-transaction"
# While not ideal, this step allows us to calculate exactly how much space the dump
# will need. Our main goal here is avoiding any chance of corruption due to disk space
# exhaustion
backup_size=$(mysqldump $backup_flags 2>/dev/null | wc -c)
database_size=$(du -cb /var/lib/mysql | tail -1 | awk '{ print $1 }')
free_space=$(df -B1 --output=avail "$MYSQL_BACKUP_DIR" | tail -1)
# we need at least space for a new mysql database + dump of the existing one,
# times a small factor for additional safety room
# note: bash doesn't do floating point math or floats in if statements,
# so use python to apply the ratio and cast it back to integer
required_space=$(python -c "from __future__ import print_function; print(\"%d\" % int((($database_size + $backup_size) * $MYSQL_BACKUP_SIZE_RATIO)))")
if [ $required_space -ge $free_space ]; then
echo_error "Error: not enough free space in $MYSQL_BACKUP_DIR ($required_space bytes required)"
exit 1
fi
fi
fi
}
check_python_rpm()
{
# If for some reason rpm-python are missing we want to error out early enough
if ! rpm -q rpm-python &> /dev/null; then
echo_error "ERROR: upgrade cannot start without rpm-python installed"
exit 1
fi
}
check_clean_cluster()
{
if crm_mon -1 | grep -A3 Failed; then
echo_error "ERROR: upgrade cannot start with failed resources on the cluster. Clean them up before starting: pcs resource cleanup."
exit 1
fi
}
check_galera_root_password()
{
# BZ: 1357112
if [ ! -e /root/.my.cnf ]; then
echo_error "ERROR: upgrade cannot be started, the galera password is missing. The overcloud needs update."
exit 1
fi
}
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