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db_smart_backup.sh
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db_smart_backup.sh
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#!/usr/bin/env bash
# LICENSE: BSD 3 clause
# Author: Mathieu Le Marec - Pasquet / [email protected]
__NAME__="db_smart_backup"
# even if it is not really tested, we are trying to get full posix compatibility
# and to run on another shell than bash
#if [ x"$SHELL" = "x/bin/bash" ];then
# set -o posix &> /dev/null
#fi
generate_configuration_file() {
cat > ${DSB_CONF_FILE} << EOF
# A script can run only for one database type and a specific host
# at a time (mysql, postgresql)
# But you can run it with multiple configuration files
# You can obiously share the same base backup directory.
# set to 1 to deactivate colors (cron)
#NO_COLOR=""
# Choose Compression type. (gzip or bzip2 or xz or zstd)
#COMP=bzip2
#User to run dumps dump binaries as, defaults to logged in user
#RUNAS=postgres
#DB user to connect to the database with, defaults to \$RUNAS
#DBUSER=postgres
######## Backup settings
# one of: postgresql mysql
#BACKUP_TYPE=postgresql
#BACKUP_TYPE=mysql
#BACKUP_TYPE=mongodb
#BACKUP_TYPE=slapd
#BACKUP_TYPE=redis
#BACKUP_TYPE=es
# Backup directory location e.g /backups
#TOP_BACKUPDIR="/var/db_smart_backup"
# do also global backup (use by postgresql to save roles/groups and only that
#DO_GLOBAL_BACKUP="1"
# HOW MANY BACKUPS TO KEEP & LEVEL
# How many snapshots to keep (lastlog for dump)
# How many per day
#KEEP_LASTS=24
#KEEP_DAYS=14
#KEEP_WEEKS=8
#KEEP_MONTHES=12
#EEP_LOGS=60
# directories permission
#DPERM="750"
# directory permission
#FPERM="640"
# OWNER/GROUP
#OWNER=root
#GROUP=root
######## Database connection settings
# host defaults to localhost
# and without port we use a connection via socket
#HOST=""
#PORT=""
# defaults to postgres on postgresql backup
# as ident is used by default on many installs, we certainly
# do not need either a password
#PASSWORD=""
# List of DBNAMES for Daily/Weekly Backup e.g. "DB1 DB2 DB3"
#DBNAMES="all"
# List of DBNAMES to EXLUCDE if DBNAMES are set to all (must be in " quotes)
#DBEXCLUDE=""
######### Elasticsearch
# ES_URI="http://localhost:9200"
# ES_USER="user"
# ES_PASSWORD="secret"
# path to snapshots (have to be added to path.repo in elasticsearch.yml)
# ES_SNAPSHOTS_DIR="\${ES_SNAPSHOTS_DIR:-\${ES_TMP}/snapshots}"
# elasticsearch daemon user
######### Postgresql
# binaries path
#PSQL=""
#PG_DUMP=""
#PG_DUMPALL=""
######## slapd
# SLAPCAT_ARGS="\${SLAPCAT_ARGS:-""}"
# SLAPD_DIR="\${SLAPD_DIR:-/var/lib/ldap}"
# OPT string for use with pg_dump ( see man pg_dump )
#OPT="--create -Fc"
# OPT string for use with pg_dumpall ( see man pg_dumpall )
#OPTALL="--globals-only"
######## MYSQL
#MYSQL_SOCK_PATHS=""
#MYSQL=""
#MYSQLDUMP=""
# do we disable mysqldump --single-transaction0
#MYSQLDUMP_NO_SINGLE_TRANSACTION=""
# disable to enable autocommit
#MYSQLDUMP_AUTOCOMMIT="1"
# set to enable complete inserts (true by default, disabling enable extended inserts)
#MYSQLDUMP_COMPLETEINSERTS="1"
# do we disable mysqldump --lock-tables=false
#MYSQLDUMP_LOCKTABLES=""
# set to add extra dumps info
#MYSQLDUMP_DEBUG=""
# set to disable dump routines
#MYSQLDUMP_NOROUTINES=""
# do we use ssl to connect
#MYSQL_USE_SSL=""
######## mongodb
# MONGODB_PATH="\${MONGODB_PATH:-"/var/lib/mongodb"}"
# MONGODB_USER="\${MONGODB_USER:-""}"
# MONGODB_PASSWORD="\${MONGODB_PASSWORD:-"\${PASSWORD}"}"
# MONGODB_ARGS="\${MONGODB_ARGS:-""}"
######## Redis
# REDIS_PATH="\${REDIS_PATH:-"/var/lib/redis"}"
######## Hooks (optionnal)
# functions names which point to functions defined in your
# configuration file
# Pay attention not to make function names colliding with functions in the script
#
# All those hooks can call externals programs (eg: python scripts)
# Look inside the shell script to know which variables you ll have
# set in the context, but you ll have useful information available at
# each stage like the dbname, etc.
#
# Function to run before backups (uncomment to use)
#pre_backup_hook() {
#}
# Function to run after global backup (uncomment to use)
#post_global_backup_hook() {
#}
# Function to run after global backup (uncomment to use)
#post_global_backup_failure_hook() {
#}
# Fuction run after each database backup if the backup failed
#post_db_backup_failure_hook() {
#}
# Function to run after each database backup (uncomment to use)
#post_db_backup_hook() {
#}
# Function to run after backup rotation
#post_rotate_hook() {
#}
# Function to run after backup orphan cleanup
#post_cleanup_hook() {
#}
# Function run after backups (uncomment to use)
#post_backup_hook="mycompany_postbackup"
# Function to run after the recap mail emission
#failure_hook() {
#}
# vim:set ft=sh:
EOF
chmod 640 "${DSB_CONF_FILE}"
}
fn_exists() {
echo $(LC_ALL=C;LANG=C;type ${1} 2>&1 | head -n1 | grep -q "is a function";echo $?)
}
print_name() {
echo -e "[${__NAME__}]"
}
log() {
echo -e "${RED}$(print_name) ${@}${NORMAL}" 1>&2
}
cyan_log() {
echo -e "${CYAN}${@}${NORMAL}" 1>&2
}
die_() {
ret="${1}"
shift
cyan_log "ABRUPT PROGRAM TERMINATION: ${@}"
do_hook "FAILURE command output" "failure_hook"
exit ${ret}
}
die() {
die_ 1 "${@}"
}
die_in_error_() {
ret="${1}"
shift
msg="${@:-"${ERROR_MSG}"}"
if [ x"${ret}" != "x0" ];then
die_ "${ret}" "${msg}"
fi
}
die_in_error() {
die_in_error_ "$?" "${@}"
}
yellow_log(){
echo -e "${YELLOW}$(print_name) ${@}${NORMAL}" 1>&2
}
readable_date() {
date +"%Y-%m-%d %H:%M:%S.%N"
}
debug() {
if [ x"${DSB_DEBUG}" != "x" ];then
yellow_log "DEBUG $(readable_date): $@"
fi
}
remove_files() {
for i in $@;do if [ -e $i ];then rm -f "$i";fi;done
}
usage() {
cyan_log "- Backup your databases with ease"
yellow_log " $0"
yellow_log " /path/toconfig"
yellow_log " alias to --backup"
yellow_log " -b|--backup /path/toconfig:"
yellow_log " backup databases"
yellow_log " --gen-config [/path/toconfig (default: ${DSB_CONF_FILE}_DEFAULT)]"
yellow_log " generate a new config file]"
}
runas() {
echo "${RUNAS:-"$(whoami)"}"
}
quote_all() {
cmd=""
for i in "${@}";do
cmd="${cmd} \"$(echo "${i}"|sed "s/\"/\"\'\"/g")\""
done
echo "${cmd}"
}
runcmd_as() {
cd "${RUNAS_DIR:-/}"
bin="${1}"
shift
args=$(quote_all "${@}")
if [ x"$(runas)" = "x" ] || [ x"$(runas)" = "x$(whoami)" ];then
${bin} "${@}"
else
su ${RUNAS} -c "${bin} ${args}"
fi
}
get_compressed_name() {
if [ x"${COMP}" = "xxz" ];then
echo "${1}.xz";
elif [ x"${COMP}" = "xgz" ] || [ x"${COMP}" = "xgzip" ];then
echo "${1}.gz";
elif [ x"${COMP}" = "xbzip2" ] || [ x"${COMP}" = "xbz2" ];then
echo "${1}.bz2";
elif [ x"${COMP}" = "xzstd" ] || [ x"${COMP}" = "xzst" ];then
echo "${1}.zst";
else
echo "${1}";
fi
}
set_compressor() {
for comp in ${COMP} ${COMPS};do
c=""
if [ x"${comp}" = "xxz" ];then
XZ="${XZ:-xz}"
c="${XZ}"
elif [ x"${comp}" = "xgz" ] || [ x"${comp}" = "xgzip" ];then
GZIP="${GZIP:-gzip}"
c="${GZIP}"
elif [ x"${comp}" = "xbzip2" ] || [ x"${comp}" = "xbz2" ];then
BZIP2="${BZIP2:-bzip2}"
c="${BZIP2}"
elif [ x"${comp}" = "xzstd" ] || [ x"${comp}" = "xzst" ];then
ZSTD="${ZSTD:-zstd}"
c="${ZSTD}"
else
c="nocomp"
fi
# test that the binary is present
if [ x"$c" != "xnocomp" ] && [ -e "$(which "$c")" ];then
COMP=$c
break
else
COMP="nocomp"
fi
done
export COMP=$COMP
}
comp_msg() {
sz="";s1="";s2="";ratio=""
if [ -e "$zname" ];then
sz="$(du -sh "$zname"|awk '{print $1}') "
s1="$(du -sb "$zname"|awk '{print $1}')"
fi
if [ -e "$name" ];then
s2="$(du -sb "$name"|awk '{print $1}')"
fi
if [ -e "$zname" ] && [ -e "$name" ];then
ratio=$(echo "$s1" "${s2}" | awk '{printf "%.2f \n", $1/$2}')
fi
log "${RED}${NORMAL}${YELLOW} ${COMP}${NORMAL}${RED} -> ${YELLOW}${zname}${NORMAL} ${RED}(${NORMAL}${YELLOW} ${sz} ${NORMAL}${RED}/${NORMAL} ${YELLOW}${ratio}${NORMAL}${RED})${NORMAL}"
}
cleanup_uncompressed_dump_if_ok() {
comp_msg
dumpfiles=""
if [ x"$?" != x"0" ];then
dumpfiles="${zname}"
fi
if [ x"$?" = x"0" ];then
if [ "${PIPED_BACKUP_COMPRESSION}" != "x1" ];then
dumpfiles="${name}"
fi
fi
remove_files "$dumpfiles"
}
do_compression() {
COMPRESSED_NAME=""
name="${1}"
zname="${2:-$(get_compressed_name ${1})}"
if [ x"${COMP}" = "xxz" ];then
if [ "x${PIPED_BACKUP_COMPRESSION}" != "x1" ];then
"${XZ}" --stdout -f -k "${name}" > "${zname}"
else
"${XZ}" --stdout -f -k > "${zname}"
fi
cleanup_uncompressed_dump_if_ok
elif [ x"${COMP}" = "xgz" ] || [ x"${COMP}" = "xgzip" ];then
if [ "x${PIPED_BACKUP_COMPRESSION}" != "x1" ];then
"${GZIP}" -f -c "${name}" > "${zname}"
else
"${GZIP}" -f -c > "${zname}"
fi
cleanup_uncompressed_dump_if_ok
elif [ x"${COMP}" = "xbzip2" ] || [ x"${COMP}" = "xbz2" ];then
if [ "x${PIPED_BACKUP_COMPRESSION}" != "x1" ];then
"${BZIP2}" -f -k -c "${name}" > "${zname}"
else
"${BZIP2}" -f -k -c > "${zname}"
fi
cleanup_uncompressed_dump_if_ok
elif [ x"${COMP}" = "xzstd" ] || [ x"${COMP}" = "xzst" ];then
if [ "x${PIPED_BACKUP_COMPRESSION}" != "x1" ];then
"${ZSTD}" -f -c -q "${name}" > "${zname}"
else
"${ZSTD}" -f -c -q > "${zname}"
fi
cleanup_uncompressed_dump_if_ok
else
/bin/true # noop
fi
if ( [ -e "${zname}" ] && [ x"${zname}" != "x${name}" ] ) || [ "${PIPED_BACKUP_COMPRESSION}" = "x1" ];then
COMPRESSED_NAME="${zname}"
else
if [ -e "${name}" ];then
log "No compressor found, no compression done"
COMPRESSED_NAME="${name}"
else
log "Compression error"
fi
fi
if [ x"${COMPRESSED_NAME}" != "x" ];then
fix_perm "${fic}"
fi
}
get_logsdir() {
dir="${TOP_BACKUPDIR}/logs"
echo "$dir"
}
get_logfile() {
filen="$(get_logsdir)/${__NAME__}_${FULL_FDATE}.log"
echo ${filen}
}
get_backupdir() {
dir="${TOP_BACKUPDIR}/${BACKUP_TYPE:-}"
if [ x"${BACKUP_TYPE}" = "xpostgresql" ];then
host="${HOST}"
if [ x"${HOST}" = "x" ] || [ x"${PGHOST}" = "x" ];then
host="localhost"
fi
if [ -e $host ];then
host="localhost"
fi
dir="$dir/$host"
fi
echo "$dir"
}
create_db_directories() {
db="${1}"
dbdir="$(get_backupdir)/${db}"
created="0"
for d in\
"$dbdir"\
"$dbdir/weekly"\
"$dbdir/monthly"\
"$dbdir/dumps"\
"$dbdir/daily"\
"$dbdir/lastsnapshots"\
;do
if [ ! -e "$d" ];then
mkdir -p "$d"
created="1"
fi
done
if [ x"${created}" = "x1" ];then
fix_perms
fi
}
link_into_dirs() {
db="${1}"
real_filename="${2}"
real_zfilename="$(get_compressed_name "${real_filename}")"
daily_filename="$(get_backupdir)/${db}/daily/${db}_${YEAR}_${DOY}_${DATE}.${BACKUP_EXT}"
lastsnapshots_filename="$(get_backupdir)/${db}/lastsnapshots/${db}_${YEAR}_${DOY}_${FDATE}.${BACKUP_EXT}"
weekly_filename="$(get_backupdir)/${db}/weekly/${db}_${YEAR}_${W}.${BACKUP_EXT}"
monthly_filename="$(get_backupdir)/${db}/monthly/${db}_${YEAR}_${MNUM}.${BACKUP_EXT}"
lastsnapshots_zfilename="$(get_compressed_name "${lastsnapshots_filename}")"
daily_zfilename="$(get_compressed_name "${daily_filename}")"
weekly_zfilename="$(get_compressed_name "$weekly_filename")"
monthly_zfilename="$(get_compressed_name "${monthly_filename}")"
if [ ! -e "${daily_zfilename}" ];then
ln "${real_zfilename}" "${daily_zfilename}"
fi
if [ ! -e "${weekly_zfilename}" ];then
ln "${real_zfilename}" "${weekly_zfilename}"
fi
if [ ! -e "${monthly_zfilename}" ];then
ln "${real_zfilename}" "${monthly_zfilename}"
fi
if [ ! -e "${lastsnapshots_zfilename}" ];then
ln "${real_zfilename}" "${lastsnapshots_zfilename}"
fi
}
dummy_callee_for_tests() {
echo "here"
}
dummy_for_tests() {
dummy_callee_for_tests
}
remove_backup_status_files() {
remove_files "$statusfile" "$statusfile.c"
}
do_db_backup_() {
LAST_BACKUP_STATUS=""
db="${1}"
fun_="${2}"
create_db_directories "${db}"
real_filename="$(get_backupdir)/${db}/dumps/${db}_${FDATE}.${BACKUP_EXT}"
zreal_filename="$(get_compressed_name "${real_filename}")"
statusfile=$(mktemp)
remove_backup_status_files
adb="${YELLOW}${db}${NORMAL} "
if [ x"${db}" = x"${GLOBAL_SUBDIR}" ];then
adb=""
fi
log "Dumping database ${adb}${RED}to maybe uncompressed dump: ${YELLOW}${real_filename}${NORMAL}"
if [ "x${PIPED_BACKUP_COMPRESSION}" = "x1" ];then
# ensure backup + compression is atomic with the absence of +o pipefail in old posix shells
( $fun_ "${db}" "${real_filename}" && touch "$statusfile" ) \
| ( do_compression "${real_filename}" "${zreal_filename}" && touch "$statusfile.c" )
if [ "x$?" != "x0" ] || ! ( [ -e "$statusfile" ] && [ -e "$statusfile.c" ] );then
remove_backup_status_files
LAST_BACKUP_STATUS="failure"
log "${CYAN} Backup of ${db} failed !!!${NORMAL}"
fi
else
$fun_ "${db}" "${real_filename}"
fi
if [ x"$?" != "x0" ];then
LAST_BACKUP_STATUS="failure"
log "${CYAN} Backup of ${db} failed !!!${NORMAL}"
else
if [ "x${PIPED_BACKUP_COMPRESSION}" != "x1" ];then
do_compression "${real_filename}" "${zreal_filename}"
fi
link_into_dirs "${db}" "${real_filename}"
fi
}
do_db_backup() {
db="`echo ${1} | sed 's/%/ /g'`"
fun_="${BACKUP_TYPE}_dump"
do_db_backup_ "${db}" "$fun_"
}
do_global_backup() {
db="$GLOBAL_SUBDIR"
fun_="${BACKUP_TYPE}_dumpall"
log_rule
log "GLOBAL BACKUP"
log_rule
do_db_backup_ "${db}" "$fun_"
}
activate_IO_redirection() {
if [ x"${DSB_ACTITED_RIO}" = x"" ];then
DSB_ACTITED_RIO="1"
logdir="$(dirname $(get_logfile))"
if [ ! -e "${logdir}" ];then
mkdir -p "${logdir}"
fi
touch "$(get_logfile)"
exec 1> >(tee -a "$(get_logfile)") 2>&1
fi
}
deactivate_IO_redirection() {
if [ x"${DSB_ACTITED_RIO}" != x"" ];then
DSB_ACTITED_RIO=""
exec 1>&1 # Restore stdout and close file descriptor #6.
exec 2>&2 # Restore stdout and close file descriptor #7.
fi
}
do_pre_backup() {
debug "do_pre_backup"
# IO redirection for logging.
if [ x"$COMP" = "xnocomp" ];then
comp_msg="No compression"
else
comp_msg="${COMP}"
fi
# If backing up all DBs on the server
log_rule
log "DB_SMART_BACKUP by [email protected] / http://www.makina-corpus.com"
log "Conf: ${YELLOW}'${DSB_CONF_FILE}'"
log "Log: ${YELLOW}'$(get_logfile)'"
log "Backup Start Time: ${YELLOW}$(readable_date)${NORMAL}"
log "Backup of database compression://type@server: ${YELLOW}${comp_msg}://${BACKUP_TYPE}@${HOST}${NORMAL}"
log_rule
}
fix_perm() {
fic="${1}"
if [ -e "${fic}" ];then
if [ -d "${fic}" ];then
perm="${DPERM:-750}"
elif [ -f "${fic}" ];then
perm="${FPERM:-640}"
fi
chown ${OWNER:-"root"}:${GROUP:-"root"} "${fic}"
chmod -f $perm "${fic}"
fi
}
fix_perms() {
debug "fix_perms"
find "${TOP_BACKUPDIR}" -type d -print|\
while read fic
do
fix_perm "${fic}"
done
find "${TOP_BACKUPDIR}" -type f -print|\
while read fic
do
fix_perm "${fic}"
done
}
wrap_log() {
echo -e "$("$@"|sed "s/^/$(echo -e "${NORMAL}${RED}")$(print_name) $(echo -e "${NORMAL}${YELLOW}")/g"|sed "s/\t/ /g"|sed "s/ +/ /g")${NORMAL}"
}
do_post_backup() {
# Run command when we're done
log_rule
debug "do_post_backup"
log "Total disk space used for backup storage.."
log " Size - Location:"
wrap_log du -shc "$(get_backupdir)"/*
log_rule
log "Backup end time: ${YELLOW}$(readable_date)${NORMAL}"
log_rule
deactivate_IO_redirection
sanitize_log
}
sanitize_log() {
sed -i -e "s/\x1B\[[0-9;]*[JKmsu]//g" "$(get_logfile)"
}
get_sorted_files() {
files="$(ls -1 "${1}" 2>/dev/null)"
sep="____----____----____"
echo -e "${files}"|while read fic;do
key=""
oldkey="${fic}"
while true;do
key="$(echo "${oldkey}"|sed -e "s/_\([0-9][^0-9]\)/_0\1/g")"
if [ x"${key}" != x"${oldkey}" ];then
oldkey="${key}"
else
break
fi
done
echo "${key}${sep}${fic}"
done | sort -n -r | awk -F"$sep" '{print $2}'
}
do_rotate() {
log_rule
debug "rotate"
log "Execute backup rotation policy, keep"
log " - logs : ${YELLOW}${KEEP_LOGS}${NORMAL}"
log " - last snapshots : ${YELLOW}${KEEP_LASTS}${NORMAL}"
log " - daily dumps : ${YELLOW}${KEEP_DAYS}${NORMAL}"
log " - weekly dumpss : ${YELLOW}${KEEP_WEEKS}${NORMAL}"
log " - monthly dumps : ${YELLOW}${KEEP_MONTHES}${NORMAL}"
# ./TOPDIR/POSTGRESQL/HOSTNAME
# or ./TOPDIR/logs for logs
ls -1d "${TOP_BACKUPDIR}" "$(get_backupdir)"/*|while read nsubdir;do
# ./TOPDIR/HOSTNAME/DBNAME/${monthly,weekly,daily,dumps}
suf=""
if [ x"$nsubdir" = "x${TOP_BACKUPDIR}" ];then
subdirs="logs"
suf="/logs"
else
subdirs="monthly weekly daily lastsnapshots"
fi
log " - Operating in: ${YELLOW}'${nsubdir}${suf}'${NORMAL}"
for chronodir in ${subdirs};do
subdir="${nsubdir}/${chronodir}"
if [ -d "${subdir}" ];then
if [ x"${chronodir}" = "xlogs" ];then
to_keep=${KEEP_LOGS:-60}
elif [ x"${chronodir}" = "xweekly" ];then
to_keep=${KEEP_WEEKS:-2}
elif [ x"${chronodir}" = "xmonthly" ];then
to_keep=${KEEP_MONTHES:-2}
elif [ x"${chronodir}" = "xdaily" ];then
to_keep=${KEEP_DAYS:-2}
elif [ x"${chronodir}" = "xlastsnapshots" ];then
to_keep=${KEEP_LASTS:-2}
else
to_keep="65535" # int limit
fi
i=0
get_sorted_files "${subdir}" | while read nfic;do
dfic="${subdir}/${nfic}"
i="$((${i}+1))"
if [ "${i}" -gt "${to_keep}" ] &&\
[ -e "${dfic}" ] &&\
[ ! -d ${dfic} ];then
log " * Unlinking ${YELLOW}${dfic}${NORMAL}"
remove_files "${dfic}"
fi
done
fi
done
done
}
log_rule() {
log "======================================================================"
}
handle_hook_error() {
debug "handle_hook_error"
log "Unexpected exit of ${HOOK_CMD} hook, you should never issue an exit in a hook"
log_rule
DSB_RETURN_CODE="1"
handle_exit
}
do_prune() {
do_rotate
do_hook "Postrotate command output" "post_rotate_hook"
do_cleanup_orphans
do_hook "Postcleanup command output" "post_cleanup_hook"
fix_perms
do_post_backup
do_hook "Postbackup command output" "post_backup_hook"
}
handle_exit() {
DSB_RETURN_CODE="${DSB_RETURN_CODE:-$?}"
if [ x"${DSB_BACKUP_STARTED}" != "x" ];then
debug "handle_exit"
DSB_HOOK_NO_TRAP="1"
do_prune
if [ x"$DSB_RETURN_CODE" != "x0" ];then
log "WARNING, this script did not behaved correctly, check the log: $(get_logfile)"
fi
if [ x"${DSB_GLOBAL_BACKUP_IN_FAILURE}" != x"" ];then
cyan_log "Global backup failed, check the log: $(get_logfile)"
DSB_RETURN_CODE="${DSB_BACKUP_FAILED}"
fi
if [ x"${DSB_BACKUP_IN_FAILURE}" != x"" ];then
cyan_log "One of the databases backup failed, check the log: $(get_logfile)"
DSB_RETURN_CODE="${DSB_BACKUP_FAILED}"
fi
fi
exit "${DSB_RETURN_CODE}"
}
do_trap() {
debug "do_trap"
trap handle_exit EXIT SIGHUP SIGINT SIGQUIT SIGTERM
}
do_cleanup_orphans() {
log_rule
debug "do_cleanup_orphans"
log "Cleaning orphaned dumps:"
# prune all files in dumps dirs which have no more any
# hardlinks in chronoted directories (weekly, monthly, daily)
find "$(get_backupdir)" -type f -links 1 -print 2>/dev/null|\
while read fic
do
log " * Pruning ${YELLOW}${fic}${NORMAL}"
remove_files "${fic}"
done
}
do_hook() {
HOOK_HEADER="${1}"
HOOK_CMD="${2}"
if [ x"${DSB_HOOK_NO_TRAP}" = "x" ];then
trap handle_hook_error EXIT SIGHUP SIGINT SIGQUIT SIGTERM
fi
if [ x"$(fn_exists ${HOOK_CMD})" = "x0" ];then
debug "do_hook ${HOOK_CMD}"
log_rule
log "HOOK: ${YELLOW} ${HOOK_HEADER}"
"${HOOK_CMD}"
log_rule
log ""
fi
if [ x"${DSB_HOOK_NO_TRAP}" = "x" ];then
trap handle_exit EXIT SIGHUP SIGINT SIGQUIT SIGTERM
fi
}
do_backup() {
debug "do_backup"
if [ x"${BACKUP_TYPE}" = "x" ];then
die "No backup type, choose between mysql,postgresql,redis,mongodb,slapd,es"
fi
# if either the source failed or we do not have a configuration file, bail out
die_in_error "Invalid configuration file: ${DSB_CONF_FILE}"
DSB_BACKUP_STARTED="y"
do_pre_backup
do_hook "Prebackup command output" "pre_backup_hook"
if [ x"${DO_GLOBAL_BACKUP}" != "x" ];then
do_global_backup
if [ x"${LAST_BACKUP_STATUS}" = "xfailure" ];then
do_hook "Postglobalbackup command output" "post_global_backup_hook"
DSB_GLOBAL_BACKUP_IN_FAILURE="y"
else
do_hook "Postglobalbackup(failure) command output" "post_global_backup_failure_hook"
fi
fi
if [ "x${BACKUP_DB_NAMES}" != "x" ];then
log_rule
log "DATABASES BACKUP"
log_rule
for db in ${BACKUP_DB_NAMES};do
do_db_backup $db
if [ x"${LAST_BACKUP_STATUS}" = "xfailure" ];then
do_hook "Postdbbackup: ${db} command output" "post_db_backup_hook"
DSB_BACKUP_IN_FAILURE="y"
else
do_hook "Postdbbackup: ${db}(failure) command output" "post_db_backup_failure_hook"
fi
done
fi
}
mark_run_rotate() {
DSB_CONF_FILE="${1}"
DO_PRUNE="1"
}
mark_run_backup() {
DSB_CONF_FILE="${1}"
DO_BACKUP="1"
}
verify_backup_type() {
for typ_ in _dump _dumpall;do
if [ x"$(fn_exists ${BACKUP_TYPE}${typ_})" != "x0" ];then
die "Please provide a ${BACKUP_TYPE}${typ_} export function"
fi
done
}
db_user() {
echo "${DBUSER:-${RUNAS:-$(whoami)}}"
}
set_colors() {
YELLOW="\e[1;33m"
RED="\\033[31m"
CYAN="\\033[36m"
NORMAL="\\033[0m"
if [ x"$NO_COLOR" != "x" ] || [ x"$NOCOLOR" != "x" ] || [ x"$NO_COLORS" != "x" ] || [ x"$NOCOLORS" != "x" ];then
YELLOW=""
RED=""
CYAN=""
NORMAL=""
fi
}
set_vars() {
debug "set_vars"
args=${@}
set_colors
PARAM=""
DSB_CONF_FILE_DEFAULT="/etc/db_smartbackup.conf.sh"
parsable_args="$(echo "${@}"|sed "s/^--//g")"
if [ x"${parsable_args}" = "x" ];then
USAGE="1"
fi
if [ -e "${parsable_args}" ];then
mark_run_backup ${1}
else
while true
do
sh="1"
if [ x"${1}" = "x$PARAM" ];then
break
fi
if [ x"${1}" = "x--gen-config" ];then
DSB_GENERATE_CONFIG="1"
DSB_CONF_FILE="${2:-${DSB_CONF_FILE_DEFAULT}}"
sh="2"
elif [ x"${1}" = "x-p" ] || [ x"${1}" = "x--prune" ];then
mark_run_rotate ${2};sh="2"
elif [ x"${1}" = "x-b" ] || [ x"${1}" = "x--backup" ];then
mark_run_backup ${2};sh="2"
else
if [ x"${DB_SMART_BACKUP_AS_FUNCS}" = "x" ];then
usage
die "Invalid invocation"
fi
fi
PARAM="${1}"
OLD_ARG="${1}"
for i in $(seq $sh);do
shift
if [ x"${1}" = "x${OLD_ARG}" ];then
break
fi
done
if [ x"${1}" = "x" ];then
break
fi
done
fi
######## Backup settings
NO_COLOR="${NO_COLOR:-}"
COMP=${COMP:-xz}
BACKUP_TYPE=${BACKUP_TYPE:-}
TOP_BACKUPDIR="${TOP_BACKUPDIR:-/var/db_smart_backup}"
DEFAULT_DO_GLOBAL_BACKUP="1"
if [ "x${BACKUP_TYPE}" = "xes" ];then
DEFAULT_DO_GLOBAL_BACKUP=""
fi
DO_GLOBAL_BACKUP="${DO_GLOBAL_BACKUP-${DEFAULT_DO_GLOBAL_BACKUP}}"
KEEP_LASTS="${KEEP_LASTS:-24}"
KEEP_DAYS="${KEEP_DAYS:-14}"
KEEP_WEEKS="${KEEP_WEEKS:-8}"
KEEP_MONTHES="${KEEP_MONTHES:-12}"
KEEP_LOGS="${KEEP_LOGS:-60}"
DPERM="${DPERM:-"750"}"
FPERM="${FPERM:-"640"}"
OWNER="${OWNER:-"root"}"
GROUP="${GROUP:-"root"}"
######## Database connection settings
HOST="${HOST:-localhost}"
PORT="${PORT:-}"
RUNAS="" # see runas function
DBUSER="" # see db_user function
PASSWORD="${PASSWORD:-}"
DBNAMES="${DBNAMES:-all}"
DBEXCLUDE="${DBEXCLUDE:-}"
######## hostname
GET_HOSTNAME=`hostname -f`
if [ x"${GET_HOSTNAME}" = x"" ]; then
GET_HOSTNAME=`hostname -s`
fi
######## Mail setup
MAILCONTENT="${MAILCONTENT:-stdout}"
MAXATTSIZE="${MAXATTSIZE:-4000}"
MAILADDR="${MAILADDR:-root@localhost}"
MAIL_SERVERNAME="${MAIL_SERVERNAME:-${GET_HOSTNAME}}"
######### Postgresql
PSQL="${PSQL:-"$(which psql 2>/dev/null)"}"
PG_DUMP="${PG_DUMP:-"$(which pg_dump 2>/dev/null)"}"
PG_DUMPALL="${PG_DUMPALL:-"$(which pg_dumpall 2>/dev/null)"}"
OPT="${OPT:-"--create -Fc -Z0"}"
OPTALL="${OPTALL:-"--globals-only"}"
######### MYSQL
MYSQL_USE_SSL="${MYSQL_USE_SSL:-}"
MYSQL_SOCK_PATHS="${MYSQL_SOCK_PATHS:-"/var/run/mysqld/mysqld.sock"}"
MYSQL="${MYSQL:-$(which mysql 2>/dev/null)}"
MYSQLDUMP="${MYSQLDUMP:-$(which mysqldump 2>/dev/null)}"
MYSQLDUMP_NO_SINGLE_TRANSACTION="${MYSQLDUMP_NO_SINGLE_TRANSACTION:-}"
MYSQLDUMP_AUTOCOMMIT="${MYSQLDUMP_AUTOCOMMIT:-1}"
MYSQLDUMP_COMPLETEINSERTS="${MYSQLDUMP_COMPLETEINSERTS:-1}"
MYSQLDUMP_LOCKTABLES="${MYSQLDUMP_LOCKTABLES:-}"
MYSQLDUMP_DEBUG="${MYSQLDUMP_DEBUG:-}"
MYSQLDUMP_NOROUTINES="${MYSQLDUMP_NOROUTINES:-}"
# mongodb
MONGODB_PATH="${MONGODB_PATH:-"/var/lib/mongodb"}"
MONGODB_USER="${MONGODB_USER:-"${DBUSER}"}"
MONGODB_PASSWORD="${MONGODB_PASSWORD:-"${PASSWORD}"}"
MONGODB_ARGS="${MONGODB_ARGS:-""}"
# slapd
SLAPCAT_ARGS="${SLAPCAT_ARGS:-""}"
SLAPD_DIR="${SLAPD_DIR:-/var/lib/ldap}"
######## Hooks
pre_backup_hook="${pre_backup_hook:-}"
post_global_backup_hook="${post_global_backup_hook-}"
post_db_backup_hook="${post_db_backup_hook-}"
post_backup_hook="${post_backup_hook-}"
######## Advanced options
COMPS="${COMPS-"xz zstd bz2 gzip nocomp"}"
COMP="${COMP-"${COMPS}"}"
GLOBAL_SUBDIR="__GLOBAL__"
PATH=$PATH:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
DATE=`date +%Y-%m-%d` # Datestamp e.g 2002-09-21
FDATE=`date +%Y-%m-%d_%H-%M-%S` # Datestamp e.g 2002-09-21
FULL_FDATE=`date +%Y-%m-%d_%H-%M-%S.%N` # Datestamp e.g 2002-09-21
DOY=`date +%j` # Day of the YEAR 0..366
DOW=`date +%A` # Day of the week e.g. Monday
DNOW=`date +%u` # Day number of the week 1 to 7 where 1 represents Monday
DOM=`date +%d` # Date of the Month e.g. 27
M=`date +%B` # Month e.g January
YEAR=`date +%Y` # Datestamp e.g 2002-09-21
MNUM=`date +%m` # Month e.g 1
W=`date +%V` # Week Number e.g 37
DSB_BACKUPFILES="" # thh: added for later mailing
DSB_RETURN_CODE=""
DSB_GLOBAL_BACKUP_FAILED="3"
DSB_BACKUP_FAILED="4"
# source conf file if any
if [ -e "${DSB_CONF_FILE}" ];then
. "${DSB_CONF_FILE}"
fi