Thanks for the update and I apricate your work.
So, the updated script works (Backup and Restoration) for both SQLite DB (<=2.39.0) and PostgreSQL migrated (>=2.40).
Yep, you can take backup from a SQLLite based PMM and apply to a newer instance of PMM. The backup/restore script does not handle any of the migration routines, that is done as part of the restore to an upgraded instance (it invokes pmm-update-perform process which handles all the ansible migration tasks.
Thanks, @steve.hoffman for the confirmation.
I believe we should test the script to see if it works with PMM 3.x or versions higher than 3.0.
If not, please fix the script for backing up the PMM server data.
Thanks
Naresh
As 3.0 gets closer to GA Iâll certainly do my best to ensure support for it but this isnât something that the formal team ownsâŠthis was something I did on the side for a different need and it started taking on a life of itâs own (isnât that how software works! 
). I will talk to the PM to see if this is something worth building into the UI for PMM so that regular PMM updates can be scheduled and retrieved but itâs not a high demand request from what I can tell so may fall low on the teamâs priority list. If you ever want to contribute to it just let me know and Iâll make you a collaborator on my github repo for sure!
Sorry, I assumed it was part of the PMM. Sure, Iâll help whenever 3.0 is published.
If we can incorporate this into the PMM release, it will be more useful and allow us to run backups from the GUI.
The below backup script is not working for Backup and Restore after we upgrade from PMM2 to PMM3.
Can you please help us with the separate script for PMM3 (both backup and restore)?
Better we can separate the script for PMM3 based on the new architectural changes.
pmmBackupRestore/backup.sh at main · shoffman-percona/pmmBackupRestore
I tried to implement the backup and restore script for PMM3 but after restoring the backup, inside the PMM3 server container, the PostgreSQL QAN agent is not working. I have updated everything in this forum link.
I am attaching the script for PMM3, please help me to fix the PostgreSQL QAN agent issue inside the PMM3 server container.
NOTE: The below script only works for PMM3 version.
#!/bin/bash
####
# Still NEED
# Run backups in parallel for speed? have to monitor for all 3 being done before moving on
# Do we need to backup pmm logs? I think no but asking anyway
# Args and help (assuming running script by itself will backup with all defaults but do we allow overrides? i.e. storage location of backup?
#
####
######################################
# Set Defaults
######################################
backup_version="pmm_backup_$(date +%Y%m%d_%H%M%S)"
backup_root="/srv/backups"
backup_dir=${backup_root}/${backup_version}
clickhouse_database="pmm"
pmm_version=$(pmm-managed --version 2> >(grep -Em1 ^Version) | sed 's/.*: //' | awk -F- '{print $1}')
restore=0
upgrade=false
logfile="${backup_root}/pmmBackup.log"
set -Eeuo pipefail
trap cleanup SIGINT SIGTERM ERR EXIT
#######################################
# Show script usage info.
#######################################
usage() {
cat <<EOF
Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-i] [-s] [-r] [-u]
This tool is used to take online backups and can be used to restore a backup as well.
Available options:
-h, --help Print this help and exit
-i, --interactive Interactive mode will prompt user for values instead of assuming defaults ${RED}Not Yet Implemented${NOFORMAT}
-v, --verbose Print script debug info
-r, --restore YYYYMMDD_HHMMSS
Restore backup with date/time code of YYYYMMDD_HHMMSS to a PMM server of the same version (.tar.gz file must be in ${backup_root} directory)
-s, --storage Choose a different storage location (default: ${backup_root})
-u, --upgrade Allow restore to a newer PMM server than the backup was taken from (backup and restore version should be 5 or fewer versions apart)
EOF
exit
}
#######################################
# Accept and parse script's params.
#######################################
parse_params() {
while :; do
case "${1-}" in
-h | --help) usage ;;
-v | --verbose) set -x ;;
# -i | --interactive) interactive=1 ;;
-s | --storage)
storage="${2-}"
backup_root="${storage}"
backup_dir=${backup_root}/${backup_version}
logfile="${backup_root}/pmmBackup.log"
msg "${BLUE}Storage override${NOFORMAT} to: ${backup_root}"
shift
;;
-r | --restore)
restore="${2-}"
msg "${BLUE}Restoring${NOFORMAT} ${restore}"
shift
;;
-u | --upgrade)
upgrade=true
msg "${BLUE}Restore${NOFORMAT} to upgraded instance"
;;
-?*) die "Unknown option: ${1}" ;;
*) break ;;
esac
shift
done
args=("${@}")
return 0
}
#######################################
# Clean up setup if interrupt.
#######################################
cleanup() {
trap - SIGINT SIGTERM ERR EXIT
}
#######################################
# Defines colours for output messages.
#######################################
setup_colors() {
if [[ -t 2 ]] && [[ -z "${NO_COLOR-}" ]] && [[ "${TERM-}" != "dumb" ]]; then
NOFORMAT='\033[0m' RED='\033[0;31m' GREEN='\033[0;32m' ORANGE='\033[0;33m'
BLUE='\033[0;34m' PURPLE='\033[0;35m' CYAN='\033[0;36m' YELLOW='\033[1;33m'
else
NOFORMAT='' RED='' GREEN='' ORANGE='' BLUE='' PURPLE='' CYAN='' YELLOW=''
fi
}
#######################################
# Prints message to stderr with new line at the end.
#######################################
msg() {
echo >&2 -e "${1-}"
}
#######################################
# Prints message and exit with code.
# Arguments:
# message string;
# exit code.
# Outputs:
# writes message to stderr.
#######################################
die() {
local message=${1}
local code=${2-1} # default exit status 1
msg "${message}"
exit "${code}"
}
#######################################
# Check if Command exists
#######################################
check_command() {
command -v "${@}" 1>/dev/null
}
#######################################
# Runs command as root with multiple fallback options.
#######################################
run_root() {
sh='sh -c'
if [ "$(id -un)" != 'root' ]; then
if check_command sudo; then
sh='sudo -E sh -c'
elif check_command su; then
sh='su -c'
else
die "${RED}ERROR: root rights needed to run \"${*}\" command ${NOFORMAT}"
fi
fi
${sh} "${@}" &>>"${logfile}"
}
######################################
# Verify and satisfy prerequisites
######################################
check_prereqs() {
msg "${ORANGE}Checking${NOFORMAT} for/installing prerequisite software...an internet connection is requried or you must install missing softare manually"
touch "${logfile}"
# Does backup location exist and will we be able to write to it
if [ ! -d "${backup_root}" ] ; then
echo "Bkp dir: ${backup_root}"
mkdir -p ${backup_root}
elif [ ! -w "${backup_root}" ] ; then
die "${RED}${backup_root} is not writable${NOFORMAT}, please look at permissions for $(id -un)"
else
echo "Bkp dir exist: ${backup_root}"
fi
#set version
if [ "${restore}" == 0 ] ; then
mkdir -p "${backup_dir}"
echo ${pmm_version} > "${backup_dir}"/pmm_version.txt
if ! check_command /tmp/vmbackup-prod; then
get_vm
fi
elif [ "${restore}" != 0 ] ; then
msg " Extracting Backup Archive"
restore_from_dir="${backup_root}/pmm_backup_${restore}"
#msg "restore from dir: ${restore_from_dir}"
restore_from_file="${backup_root}/pmm_backup_${restore}.tar.gz"
#msg "restore from file: ${restore_from_file}"
mkdir -p "${restore_from_dir}"
tar zxfm "${restore_from_file}" -C "${restore_from_dir}"
backup_pmm_version=$(cat "${restore_from_dir}"/pmm_version.txt)
restore_to_pmm_version=${pmm_version}
#msg "from ${backup_pmm_version} to ${restore_to_pmm_version}"
check_version "${backup_pmm_version}" "${restore_to_pmm_version}"
#msg "${version_check} for restore action"
# case eq: versions equal, just go
# case lt: backup from older version of pmm, needs upgrade flag also
# case gt: backup from newer version of pmm, not implemented
if [[ ${version_check} == "eq" ]]; then
#good to go, do nothing
msg "${GREEN}Version Match${NOFORMAT} (${version_check}), proceeding"
elif [[ ${version_check} == "lt" ]]; then
if $upgrade ; then
msg "${GREEN}Proceeding${NOFORMAT} with restore to upgraded version of PMM"
else
die "${RED}WARNING${NOFORMAT}: You must also pass the upgrade flag to restore to a newer version of PMM"
fi
elif [[ ${version_check} == "gt" ]] ; then
die "${RED}ERROR${NOFORMAT}: Downgrades are not supported, you can only restore to $backup_pmm_version"
fi
if ! check_command /tmp/vmrestore-prod; then
get_vm
fi
fi
### nice to haves ###
#will the backup fit on the filesystem (need >2x the size of the /srv directory)
}
#####################################################
# Do a version check to see if victoriametrics
# utils are from before windows/linux filename
# designation was added and download as appropriate
#####################################################
get_vm() {
cd /tmp
vm_version=$(victoriametrics --version | cut -d '-' -f7 | sed 's/v//')
file_name="vmutils-linux-amd64-v${vm_version}.tar.gz"
msg " Downloading https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v${vm_version}/${file_name}"
if ! curl -s -L -O https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v"${vm_version}"/"${file_name}" &>> "${logfile}" ; then
die "${RED}ERROR ${NOFORMAT}: Could not download needed component...check internet?"
fi
tar zxf "${file_name}"
}
#############################################
# Check to see if version backed up is same,
# older, newer than version being restored to
#############################################
check_version() {
#reset version_check to nothing for reuse
version_check=false
#msg " Comparing version ${1} to ${2}"
if [ "${1}" == "${2}" ] ; then
#versions match, proceed
version_check="eq"
return 0
fi
local IFS=.
local i ver1=(${1}) ver2=(${2})
# fill empty fields in ver1 with zeros
for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
do
ver1[i]=0
done
for ((i=0; i<${#ver1[@]}; i++))
do
if [[ -z ${ver2[i]} ]]
then
# fill empty fields in ver2 with zeros
ver2[i]=0
fi
if ((10#${ver1[i]} < 10#${ver2[i]}))
then
version_check="lt"
return 0
fi
if ((10#${ver1[i]} > 10#${ver2[i]}))
then
version_check="gt"
return 0
fi
done
version_check=false
return 0
# if [ "${backup_pmm_version}" != "${restore}_to_pmm_version" ] ; then
# die "Cannot restore backup from PMM version ${backup_pmm_version} to PMM version ${restore}_to_pmm_version, install ${backup_pmm_version} on this host and retry."
# fi
}
######################################
# Perform Backup of PMM
######################################
perform_backup() {
#setup env
msg "${ORANGE}Creating${NOFORMAT} backup directory structure"
mkdir -p "${backup_root}"/"${backup_version}"/{postgres,vm,clickhouse,folders}
#pg backup
msg "${ORANGE}Starting${NOFORMAT} PostgreSQL backup"
pg_dump -c -C -U pmm-managed > "${backup_dir}"/postgres/backup.sql
if [ -f /etc/grafana/grafana.ini ]; then
pg_dump -c -C -U grafana > "${backup_dir}"/postgres/grafana.sql
fi
msg "${GREEN}Completed${NOFORMAT} PostgreSQL backup"
#vm backup
msg "${ORANGE}Starting${NOFORMAT} VictoriaMetrics backup"
/tmp/vmbackup-prod --storageDataPath=/srv/victoriametrics/data -snapshot.createURL=http://localhost:9090/prometheus/snapshot/create -dst=fs://"${backup_dir}"/vm/ -loggerOutput=stdout
msg "${GREEN}Completed${NOFORMAT} VictoriaMetrics backup"
#clickhouse Backup
msg "${ORANGE}Starting${NOFORMAT} Clickhouse backup"
mapfile -t ch_array < <(/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --query "select name from system.tables where database = '"${clickhouse_database}"'")
#get engine type
clickhouse_engine=$(/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --query "select engine from system.databases where name='"${clickhouse_database}"'")
for table in "${ch_array[@]}"
do
if [ "${table}" == "schema_migrations" ] ; then
msg " Backing up ${table} table"
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="SHOW CREATE TABLE ${table}" --format="TabSeparatedRaw" > "${backup_dir}"/clickhouse/"${table}".sql
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="SELECT * from ${table}" --format CSV > "${backup_dir}"/clickhouse/"${table}".data
else
msg " Backing up ${table} table"
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="SHOW CREATE TABLE ${table}" --format="TabSeparatedRaw" > "${backup_dir}"/clickhouse/"${table}".sql
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --query "alter table ${clickhouse_database}.${table} freeze"
if [ ${clickhouse_engine} == "Ordinary" ] ; then
msg "${ORANGE} INFO: ${NOFORMAT}Engine = ${clickhouse_engine}"
mv /srv/clickhouse/shadow "${backup_dir}"/clickhouse/"${backup_version}"
elif [ ${clickhouse_engine} == "Atomic" ] ; then
msg "${ORANGE} INFO: ${NOFORMAT}Engine = ${clickhouse_engine}"
increment=$(cat /srv/clickhouse/shadow/increment.txt)
table_uuid=$(/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --query "select uuid from system.tables where database = '"${clickhouse_database}"' and name = '"${table}"'")
prefix=$(echo "${table_uuid}" | cut -c1-3)
mkdir -p "${backup_dir}"/clickhouse/"${backup_version}"/"${increment}"/data/"${clickhouse_database}"/"${table}"
mv /srv/clickhouse/shadow/increment.txt "${backup_dir}"/clickhouse/"${backup_version}"
mv /srv/clickhouse/shadow/"${increment}"/store/"${prefix}"/"${table_uuid}"/* "${backup_dir}"/clickhouse/"${backup_version}"/"${increment}"/data/"${clickhouse_database}"/"${table}"
rm -rf /srv/clickhouse/shadow/
fi
fi
done
msg "${GREEN}Completed${NOFORMAT} Clickhouse backup"
#support files backup
msg "${ORANGE}Starting${NOFORMAT} configuration and supporting files backup"
#cp -af /srv/grafana "${backup_dir}"/folders/
#cp -af /srv/nginx "${backup_dir}"/folders/
#cp -af /srv/prometheus "${backup_dir}"/folders/
#cp -af /srv/pmm-distribution "${backup_dir}"/folders/
msg "${GREEN}Completed${NOFORMAT} configuration and supporting files backup"
msg "${ORANGE}Compressing${NOFORMAT} backup artifact"
cpus=$(cat /proc/cpuinfo | grep processor | wc -l)
[ ${cpus} -eq 1 ] && use_cpus=${cpus} || use_cpus=$((${cpus}/2))
#msg "limiting to ${use_cpus}"
#tar -cf "$backup_root"/"$backup_version".tar.gz -C "$backup_dir" .
#tar --use-compress-program="pigz -5 -p${use_cpus}" -cf ${backup_root}/${backup_version}.tar.gz -C ${backup_dir} .
tar -C ${backup_dir} -cf - . | nice pigz -p ${use_cpus} > ${backup_root}/${backup_version}.tar.gz
msg " Cleaning up"
rm -rf "${backup_dir}"
msg "\n${GREEN}SUCCESS${NOFORMAT}: Backup Complete"
}
######################################
# Perform Restore of PMM
######################################
perform_restore() {
#stop pmm-managed locally to restore data
msg "${ORANGE}Stopping${NOFORMAT} services to begin restore"
supervisorctl stop grafana nginx pmm-agent pmm-managed qan-api2
sleep 5
msg " Services stopped, restore starting"
#pg restore
msg "${ORANGE}Starting${NOFORMAT} PostgreSQL restore"
psql -U postgres -c 'DROP DATABASE grafana;'
psql -U postgres -c 'DROP DATABASE "pmm-managed";'
psql -U postgres -f "${restore_from_dir}"/postgres/grafana.sql &>>"${logfile}"
psql -U postgres -f "${restore_from_dir}"/postgres/backup.sql &>>"${logfile}"
msg "${GREEN}Completed${NOFORMAT} PostgreSQL restore"
sleep 60
#vm restore
msg "${ORANGE}Starting${NOFORMAT} VictoriaMetrics restore"
supervisorctl stop victoriametrics
sleep 1
/tmp/vmrestore-prod -src=fs:///"${restore_from_dir}"/vm/ -storageDataPath=/srv/victoriametrics/data
chown -R pmm.pmm /srv/victoriametrics/data
supervisorctl start victoriametrics
msg "${GREEN}Completed${NOFORMAT} VictoriaMetrics restore"
sleep 60
#clickhouse restore
msg "${ORANGE}Starting${NOFORMAT} Clickhouse restore"
#stop qan api
supervisorctl stop qan-api2
sleep 1
#will need to loop through ${table}
mapfile -t ch_array < <(ls "${restore_from_dir}"/clickhouse | grep .sql | sed "s/\.sql//")
for table in "${ch_array[@]}"; do
if [ "${table}" == "schema_migrations" ] ; then
# schema_migrations only needs SQL replay, other tables need data copies and reattaching files
msg " Restoring ${table} table"
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="drop table if exists ${table}"
cat "${restore_from_dir}"/clickhouse/"${table}".sql | /bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}"
# this can be improved as all the data to form this statement is in ${table}.sql and will
# be a bit more future-proofed if table structure changes
cat "${restore_from_dir}"/clickhouse/"${table}".data | /bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query "INSERT INTO ${clickhouse_database}.${table} SELECT version, dirty, sequence FROM input('version UInt32, dirty UInt8, sequence UInt64') FORMAT CSV"
#check that num rows in == num rows inserted
rows_in=$(/bin/wc -l "${restore_from_dir}"/clickhouse/"${table}".data | cut -d " " -f1)
rows_inserted=$(clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="select count(*) from ${table}")
if [ "${rows_in}" == "${rows_inserted}" ] ; then
msg " Successfully restored ${table}"
else
msg " There was a problem restoring ${table}, ${rows_in} rows backed up but ${rows_inserted} restored"
fi
else
msg " Restoring ${table} table"
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="drop table if exists ${table}"
cat "${restore_from_dir}"/clickhouse/"${table}".sql | /bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}"
[ ! -d "/srv/clickhouse/data/${clickhouse_database}/${table}/detached" ] && mkdir -p /srv/clickhouse/data/"${clickhouse_database}"/"${table}"/detached/
msg " Copying files"
folder=$(cat "${restore_from_dir}"/clickhouse/pmm_backup_"${restore}"/increment.txt)
#if the source and destination folders are on the same physical drive, we can go MUCH faster by creating hard-links
#if not, we have to copy the files the slow way
if [ $(stat -c %d "${backup_root}") = $(stat -c %D "/srv/clickhouse") ]; then
cp -rlf "${restore_from_dir}"/clickhouse/pmm_backup_"${restore}"/"$folder"/data/"${clickhouse_database}"/"${table}"/* /srv/clickhouse/data/"${clickhouse_database}"/"${table}"/detached/
else
cp -rf "${restore_from_dir}"/clickhouse/pmm_backup_"${restore}"/"$folder"/data/"${clickhouse_database}"/"${table}"/* /srv/clickhouse/data/"${clickhouse_database}"/"${table}"/detached/
fi
msg " Gathering partitions"
[[ ${UID} -ne 0 ]] && chmod -R o+rx /srv/clickhouse;
mapfile -t partitions < <(ls /srv/clickhouse/data/"${clickhouse_database}"/"${table}"/detached/ | cut -d "_" -f1 | uniq)
[[ ${UID} -ne 0 ]] && chmod -R o-rx /srv/clickhouse;
for partition in "${partitions[@]}"; do
msg " Loading partition ${partition}"
/bin/clickhouse-client --host=127.0.0.1 --user=default --password=clickhouse --database "${clickhouse_database}" --query="alter table ${table} attach partition ${partition}"
done
fi
done
msg "${GREEN}Completed${NOFORMAT} Clickhouse restore"
sleep 60
msg " Restarting services"
if ${upgrade} ; then
supervisorctl reload
sleep 10
supervisorctl reload
sleep 1
else
#supervisorctl restart grafana nginx pmm-managed qan-api2
supervisorctl stop grafana nginx pmm-agent pmm-managed qan-api2
sleep 5
supervisorctl start grafana nginx pmm-agent pmm-managed qan-api2
sleep 5
supervisorctl restart grafana nginx pmm-agent pmm-managed qan-api2
sleep 5
supervisorctl stop grafana nginx pmm-agent pmm-managed qan-api2
sleep 5
supervisorctl start grafana nginx pmm-agent pmm-managed qan-api2
sleep 5
fi
msg "${GREEN}Completed${NOFORMAT} configuration and file restore"
# cleanup
rm -rf "${restore_from_dir}"
}
main() {
check_prereqs
if [ "${restore}" != 0 ]; then
#do restore stuff here
msg " Restoring backup pmm_backup_${restore}.tar.gz"
perform_restore
else
perform_backup
fi
}
setup_colors
parse_params "${@}"
main
die "Thank you for using the PMM Backup Tool!" 0
Apologies for not responding sooner. Iâve been away at a conference (still traveling actually). I will take a look at whatâs happening inside the new PMM3 and see if I can tailor this or, if the change is extensive, put out a new version.
Iâm gimme a few days to dig out of the whole! 
Steve
1 Like
No worries at all! Thanks for getting back to me. Take your time digging out - I know how conferences can pile things up. Looking forward to hearing what you find with PMM3 when you get a chance.