mysql: add evomariabackup 21.11
parent
51aaac0cbc
commit
039c740ef3
@ -0,0 +1,554 @@
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#!/bin/sh
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VERSION="21.11"
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show_version() {
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cat <<END
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evomariabackup version ${VERSION}
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Copyright 2004-2021 Evolix <info@evolix.fr>,
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Éric Morino <emorino@evolix.fr>,
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Jérémy Lecour <jlecour@evolix.fr>
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and others.
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evomariabackup comes with ABSOLUTELY NO WARRANTY. This is free software,
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and you are welcome to redistribute it under certain conditions.
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See the GNU Affero General Public License v3.0 for details.
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END
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}
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show_help() {
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cat <<EOF
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Usage: evomariabackup --backup-dir /path/to/mariabackup-target --compress-file /path/to/compressed.tgz
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Options
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--backup-dir mariabackup target directory
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--compress-file File name for the compressed version
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--backup Force backup phase
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--no-backup Skip backup phase
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--compress Force compress phase
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--no-compress Skip compress phase
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--log-file Log file to send messages
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--verbose Output much more information (to stdout/stderr or the log file)
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--quiet Ouput only the most critical information
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--lock-file Specify which lock file to use (default: /run/lock/mariabackup.lock)
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--max-age Lock file is ignored if older than this (default: 1d)
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-h|--help|-? Display help
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-V|--version Display version, authors and license
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Example usage for a backup then compress :
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# /usr/local/bin/evomariabackup --verbose \
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--backup-dir /backup/mariabackup/current \
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--compress-file /backup/mariabackup/compressed/$(date +%H).tgz \
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--log-file /var/log/evomariabackup.log
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max-age possible values:
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Xd = X days
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X or Xh = X hours
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Xm = X minutes
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Xs = X seconds
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EOF
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}
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log_date() {
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date +"%Y-%m-%d %H:%M:%S"
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}
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is_log_file() {
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test -n "${log_file}"
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}
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is_verbose() {
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test "${verbose}" = "1"
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}
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is_quiet() {
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test "${quiet}" = "1"
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}
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log_line() {
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level=$1
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msg=$2
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printf "[%s] %s: %s\n" "$(log_date)" "${level}" "${msg}"
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}
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log_debug() {
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level="DEBUG"
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msg=$1
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if ! is_quiet && is_verbose; then
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if is_log_file; then
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log_line "${level}" "${msg}" >> "${log_file}"
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else
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log_line "${level}" "${msg}" >&2
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fi
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fi
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}
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log_info() {
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level="INFO"
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msg=$1
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if ! is_quiet; then
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if is_log_file; then
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log_line "${level}" "${msg}" >> "${log_file}"
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else
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log_line "${level}" "${msg}" >&2
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fi
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fi
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}
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log_warning() {
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level="WARNING"
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msg=$1
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if ! is_quiet; then
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if is_log_file; then
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log_line "${level}" "${msg}" >> "${log_file}"
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else
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log_line "${level}" "${msg}" >&2
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fi
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fi
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}
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log_error() {
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level="ERROR"
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msg=$1
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if ! is_quiet; then
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if is_log_file; then
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log_line "${level}" "${msg}" >> "${log_file}"
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if tty -s; then
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printf "%s\n" "${msg}" >&2
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fi
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else
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log_line "${level}" "${msg}" >&2
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fi
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fi
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}
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log_fatal() {
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level="FATAL"
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msg=$1
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if is_log_file; then
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log_line "${level}" "${msg}" >> "${log_file}"
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if tty -s; then
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printf "%s\n" "${msg}" >&2
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fi
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else
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log_line "${level}" "${msg}" >&2
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fi
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}
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duration_in_seconds() {
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if echo "${1}" | grep -E -q '^([0-9]+[wdhms])+$'; then
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duration=$(echo "${1}" | sed 's/w/ * 604800 + /g; s/d/ * 86400 + /g; s/h/ * 3600 + /g; s/m/ * 60 + /g; s/s/ + /g; s/+ $//' | xargs expr)
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elif echo "${1}" | grep -E -q '^[0-9]+$'; then
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duration=$(echo "${1} * 3600" | xargs expr)
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else
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return 1
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fi
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log_debug "Duration \`${1}' translated to ${duration} seconds"
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echo "${duration}"
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}
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lock_file_created_at() {
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created_at=$(stat -c %Z "${lock_file}")
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log_debug "Lock file ${lock_file} created at ${created_at}"
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echo "${created_at}"
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}
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lock_file_age() {
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last_change=$(lock_file_created_at)
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now=$(date +"%s")
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age=$(( now - last_change ))
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log_debug "Lock file ${lock_file} is ${age} seconds old"
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echo "${created_at}"
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}
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is_lock_file_too_old() {
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test "$(lock_file_age)" -ge "${max_age}"
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}
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kill_or_clean_lockfile() {
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lock_file=${1:-}
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if [ -f "${lock_file}" ]; then
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# Get Process ID from the lock file
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pid=$(cat "${lock_file}")
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if [ -n "${pid}" ]; then
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log_debug "Found pid ${pid} in ${lock_file}"
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if kill -0 "${pid}" 2> /dev/null; then
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log_debug "Found process with pid ${pid}"
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lock_file_created_at_human=$(date --date "@$(lock_file_created_at)" +"%Y-%m-%d %H:%M:%S")
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if is_lock_file_too_old ; then
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# Kill the children
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pkill -9 --parent "${pid}"
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# Kill the parent
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kill -9 "${pid}"
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# Only one process can run in parallel
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log_warning "Process \`${pid}' (started at ${lock_file_created_at_human}) has been killed by \`$$'"
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else
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log_info "Process \`${pid}' (started at ${lock_file_created_at_human}) has precedence. Let's leave it work."
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# make sure that this exit doesn't remove the existing lockfile !!
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exit 0
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fi
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else
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log_warning "Process not found at PID \`${pid}'. Ignoring lock file \`${lock_file}'."
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fi
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else
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log_warning "Empty lockfile \`${lock_file}'. It should contain a PID."
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fi
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# Remove the lock file
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rm -f "${lock_file}"
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log_debug "Lock file ${lock_file} has been removed"
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fi
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}
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new_lock_file() {
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lock_file=${1:-}
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lock_dir=$(dirname "${lock_file}")
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if mkdir --parents "${lock_dir}"; then
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echo $$ > "${lock_file}"
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log_debug "Lock file '${lock_file}' has been created"
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else
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log_fatal "Failed to acquire lock file '${lock_file}'. Abort."
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exit 1
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fi
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}
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is_mariabackup_directory() {
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directory=${1:-}
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find "${directory}" -name 'ibdata*' -o -name 'ib_logfile*' -o -name 'xtrabackup_*' > /dev/null
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}
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check_backup_dir() {
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if [ -d "${backup_dir:?}" ]; then
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if [ "$(ls -A "${backup_dir:?}")" ]; then
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if is_mariabackup_directory "${backup_dir:?}"; then
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log_debug "The backup directory ${backup_dir:?} is not empty but looks like a mariabackup target. Let's clear it."
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rm -rf "${backup_dir:?}"
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else
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log_fatal "The backup directory ${backup_dir:?} is not empty and doesn't look like a mariabackup target. Please verify and clear the directory if you are sure."
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exit 1
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fi
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else
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log_debug "The backup directory ${backup_dir:?} exists but is empty. Let's proceed."
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fi
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else
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log_debug "The backup directory ${backup_dir:?} doesn't exist. Let's proceed."
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fi
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mkdir -p "${backup_dir:?}"
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}
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check_compress_dir() {
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if [ -d "${compress_dir:?}" ]; then
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log_debug "The compress_dir directory ${compress_dir:?} exists. Let's proceed."
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else
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log_debug "The compress_dir directory ${compress_dir:?} doesn't exist. Let's proceed."
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fi
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mkdir -p "${compress_dir:?}"
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}
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backup() {
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if [ -z "${backup_dir}" ]; then
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log_fatal "backup-dir option is empty"
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else
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check_backup_dir
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fi
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mariabackup_bin=$(command -v mariabackup)
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if [ -z "${mariabackup_bin}" ]; then
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log_fatal "Couldn't find mariabackup.\nUse 'apt install mariadb-backup'."
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exit 1
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fi
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backup_command="${mariabackup_bin} --backup --slave-info --target-dir=${backup_dir:?}"
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if ! is_quiet; then
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log_debug "${backup_command}"
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log_info "BEGIN mariabackup backup phase"
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fi
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if is_quiet || ! is_verbose ; then
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${backup_command} >/dev/null 2>&1
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backup_rc=$?
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elif ! is_quiet; then
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if is_log_file; then
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${backup_command} >>"${log_file}" 2>&1
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backup_rc=$?
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else
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${backup_command}
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backup_rc=$?
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fi
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fi
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if [ ${backup_rc} -ne 0 ]; then
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log_fatal "Error executing mariabackup --backup"
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exit 1
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elif ! is_quiet; then
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log_info "END mariabackup backup phase"
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fi
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prepare_command="${mariabackup_bin} --prepare --target-dir=${backup_dir:?}"
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if ! is_quiet; then
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log_debug "${prepare_command}"
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log_info "BEGIN mariabackup prepare phase"
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fi
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if is_quiet || ! is_verbose ; then
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${prepare_command} >/dev/null 2>&1
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prepare_rc=$?
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elif ! is_quiet; then
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if is_log_file; then
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${prepare_command} >>"${log_file}" 2>&1
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prepare_rc=$?
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else
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${prepare_command}
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prepare_rc=$?
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fi
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fi
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if [ ${prepare_rc} -ne 0 ]; then
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log_fatal "Error executing mariabackup --prepare"
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exit 1
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elif ! is_quiet; then
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log_info "END mariabackup prepare phase"
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fi
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}
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compress() {
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compress_dir=$(dirname "${compress_file}")
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if [ -z "${backup_dir}" ]; then
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log_fatal "backup-dir option is empty"
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exit 1
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elif [ -e "${backup_dir}" ] && [ ! -d "${backup_dir}" ]; then
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log_fatal "backup directory '${backup_dir}' exists but is not a directory"
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exit 1
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fi
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if [ -z "${compress_file}" ]; then
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log_fatal "compress-file option is empty"
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exit 1
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fi
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if [ -n "${compress_dir}" ]; then
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check_compress_dir
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fi
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pigz_bin=$(command -v pigz)
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gzip_bin=$(command -v gzip)
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if [ -n "${pigz_bin}" ]; then
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compress_program="${pigz_bin} --keep -6"
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elif [ -n "${gzip_bin}" ]; then
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compress_program="${gzip_bin} -6"
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else
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log_fatal "Couldn't find pigz nor gzip.\nUse 'apt install pigz' or 'apt install gzip'."
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exit 1
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fi
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if ! is_quiet; then
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log_debug "Compression of ${backup_dir} to ${compress_file} using \`${compress_program}'"
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log_info "BEGIN compression phase"
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fi
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if is_quiet || ! is_verbose ; then
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tar --use-compress-program="${compress_program}" -cf "${compress_file}" "${backup_dir}" >/dev/null 2>&1
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tar_rc=$?
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elif ! is_quiet; then
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if is_log_file; then
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tar --use-compress-program="${compress_program}" -cf "${compress_file}" "${backup_dir}" >>"${log_file}" 2>&1
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tar_rc=$?
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else
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tar --use-compress-program="${compress_program}" -cf "${compress_file}" "${backup_dir}"
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tar_rc=$?
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fi
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fi
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if [ ${tar_rc} -ne 0 ]; then
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log_fatal "An error occured while compressing ${backup_dir} to ${compress_file}"
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exit 1
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elif ! is_quiet; then
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log_info "END compression phase"
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fi
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}
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main() {
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kill_or_clean_lockfile "${lock_file}"
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# shellcheck disable=SC2064
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trap "rm -f ${lock_file};" 0
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new_lock_file "${lock_file}"
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if [ "${do_backup}" = "1" ] && [ -n "${backup_dir}" ]; then
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backup "${backup_dir}"
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fi
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if [ "${do_compress}" = "1" ] && [ -n "${compress_file}" ]; then
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compress "${backup_dir}" "${compress_file}"
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fi
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}
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# Declare variables
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lock_file=""
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log_file=""
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verbose=""
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quiet=""
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max_age=""
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max_age=""
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do_backup=""
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backup_dir=""
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do_compress=""
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compress_file=""
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# Parse options
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# based on https://gist.github.com/deshion/10d3cb5f88a21671e17a
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while :; do
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case $1 in
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-h|-\?|--help)
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show_help
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exit 0
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;;
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-V|--version)
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show_version
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exit 0
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;;
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-m|--max-age)
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# with value separated by space
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if [ -n "$2" ]; then
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max_age=$(duration_in_seconds "$2")
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shift
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else
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log_fatal 'ERROR: "-m|--max-age" requires a non-empty option argument.'
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fi
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;;
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--max-age=?*)
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# with value speparated by =
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max_age=$(duration_in_seconds "${1#*=}")
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;;
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--max-age=)
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# without value
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log_fatal 'ERROR: "--max-age" requires a non-empty option argument.'
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;;
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--backup)
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do_backup=1
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;;
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--no-backup)
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do_backup=0
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;;
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--backup-dir)
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# with value separated by space
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if [ -n "$2" ]; then
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backup_dir="$2"
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shift
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else
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log_fatal 'ERROR: "--backup-dir" requires a non-empty option argument.'
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fi
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;;
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--backup-dir=?*)
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# with value speparated by =
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backup_dir=${1#*=}
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;;
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--backup-dir=)
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# without value
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log_fatal '"--backup-dir" requires a non-empty option argument.'
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;;
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--compress)
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do_compress=1
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;;
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--no-compress)
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do_compress=0
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;;
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--compress-file)
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# with value separated by space
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if [ -n "$2" ]; then
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compress_file="$2"
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if [ -z "${do_compress}" ]; then
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do_compress=1
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fi
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shift
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else
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log_fatal '"--compress-file" requires a non-empty option argument.'
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fi
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;;
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--compress-file=?*)
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# with value speparated by =
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compress_file=${1#*=}
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if [ -z "${do_compress}" ]; then
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do_compress=1
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fi
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;;
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--compress-file=)
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# without value
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log_fatal '"--compress-file" requires a non-empty option argument.'
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;;
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--lock-file)
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# with value separated by space
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if [ -n "$2" ]; then
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lock_file="$2"
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shift
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else
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log_fatal '"--lock-file" requires a non-empty option argument.'
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fi
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;;
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--lock-file=?*)
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# with value speparated by =
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lock_file=${1#*=}
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;;
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--lock-file=)
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# without value
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log_fatal '"--lock-file" requires a non-empty option argument.'
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;;
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--log-file)
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# with value separated by space
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if [ -n "$2" ]; then
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log_file="$2"
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shift
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else
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log_fatal '"--log-file" requires a non-empty option argument.'
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fi
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;;
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--log-file=?*)
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# with value speparated by =
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log_file=${1#*=}
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;;
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--log-file=)
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# without value
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log_fatal '"--log-file" requires a non-empty option argument.'
|
||||
;;
|
||||
|
||||
-v|--verbose)
|
||||
verbose=1
|
||||
;;
|
||||
|
||||
--quiet)
|
||||
quiet=1
|
||||
verbose=0
|
||||
;;
|
||||
|
||||
--)
|
||||
# End of all options.
|
||||
shift
|
||||
break
|
||||
;;
|
||||
-?*|[[:alnum:]]*)
|
||||
# ignore unknown options
|
||||
if tty -s; then
|
||||
printf 'Unknown option : %s\n' "$1" >&2
|
||||
echo "" >&2
|
||||
show_usage >&2
|
||||
exit 1
|
||||
else
|
||||
log_fatal 'Unknown option : %s\n' "$1" >&2
|
||||
fi
|
||||
;;
|
||||
*)
|
||||
# Default case: If no more options then break out of the loop.
|
||||
break
|
||||
;;
|
||||
esac
|
||||
|
||||
shift
|
||||
done
|
||||
|
||||
# Default values
|
||||
|
||||
lock_file="${lock_file:-/run/lock/evomariabackup.lock}"
|
||||
verbose=${verbose:-0}
|
||||
quiet=${quiet:-0}
|
||||
max_age="${max_age:-86400}"
|
||||
do_backup="${do_backup:-1}"
|
||||
do_compress="${do_compress:-0}"
|
||||
|
||||
main
|
||||
Loading…
Reference in New Issue