evobackup/zzz_evobackup

449 lines
18 KiB
Bash
Executable File
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#!/bin/sh
#
# Script Evobackup client
# See https://gitea.evolix.org/evolix/evobackup
#
# Author: Gregory Colpart <reg@evolix.fr>
# Contributors:
# Romain Dessort <rdessort@evolix.fr>
# Benoît Série <bserie@evolix.fr>
# Tristan Pilat <tpilat@evolix.fr>
# Victor Laborie <vlaborie@evolix.fr>
# Jérémy Lecour <jlecour@evolix.fr>
#
# Licence: AGPLv3
#
# /!\ DON'T FORGET TO SET "MAIL" and "SERVERS" VARIABLES
# Fail on unassigned variables
set -u
##### Configuration ###################################################
# email adress for notifications
MAIL=jdoe@example.com
# list of hosts (hostname or IP) and SSH port for Rsync
SERVERS="node0.backup.example.com:2XXX node1.backup.example.com:2XXX"
# Should we fallback on servers when the first is unreachable ?
SERVERS_FALLBACK=${SERVERS_FALLBACK:-1}
# timeout (in seconds) for SSH connections
SSH_CONNECT_TIMEOUT=${SSH_CONNECT_TIMEOUT:-90}
# We use /home/backup : feel free to use your own dir
LOCAL_BACKUP_DIR="/home/backup"
# You can set "linux" or "bsd" manually or let it choose automatically
SYSTEM=$(uname | tr '[:upper:]' '[:lower:]')
# Store pid and logs in a file named after this program's name
PROGNAME=$(basename $0)
PIDFILE="/var/run/${PROGNAME}.pid"
LOGFILE="/var/log/${PROGNAME}.log"
# Enable/Disable tasks
LOCAL_TASKS=${LOCAL_TASKS:-1}
SYNC_TASKS=${SYNC_TASKS:-1}
##### SETUP AND FUNCTIONS #############################################
BEGINNING=$(/bin/date +"%d-%m-%Y ; %H:%M")
# shellcheck disable=SC2174
mkdir -p -m 700 ${LOCAL_BACKUP_DIR}
PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/usr/local/bin
## lang = C for english outputs
export LANGUAGE=C
export LANG=C
## Force umask
umask 077
## Initialize variable to store SSH connection errors
SERVERS_SSH_ERRORS=""
# Call test_server with "HOST:PORT" string
# It will return with 0 if the server is reachable.
# It will return with 1 and a message on stderr if not.
test_server() {
item=$1
# split HOST and PORT from the input string
host=$(echo "${item}" | cut -d':' -f1)
port=$(echo "${item}" | cut -d':' -f2)
# Test if the server is accepting connections
ssh -q -o "ConnectTimeout ${SSH_CONNECT_TIMEOUT}" "${host}" -p "${port}" -t "exit"
# shellcheck disable=SC2181
if [ $? = 0 ]; then
# SSH connection is OK
return 0
else
# SSH connection failed
new_error=$(printf "Failed to connect to \`%s' within %s seconds" "${item}" "${SSH_CONNECT_TIMEOUT}")
SERVERS_SSH_ERRORS=$(printf "%s\\n%s" "${SERVERS_SSH_ERRORS}" "${new_error}" | sed -e '/^$/d')
return 1
fi
}
# Call pick_server with an optional positive integer to get the nth server in the list.
pick_server() {
increment=${1:-0}
list_length=$(echo "${SERVERS}" | wc -w)
if [ "${increment}" -ge "${list_length}" ]; then
# We've reached the end of the list
new_error="No more server available"
SERVERS_SSH_ERRORS=$(printf "%s\\n%s" "${SERVERS_SSH_ERRORS}" "${new_error}" | sed -e '/^$/d')
# Log errors to stderr
printf "%s\\n" "${SERVERS_SSH_ERRORS}" >&2
# Log errors to logfile
printf "%s\\n" "${SERVERS_SSH_ERRORS}" >> $LOGFILE
return 1
fi
# Extract the day of month, without leading 0 (which would give an octal based number)
today=$(date +%e)
# A salt is useful to randomize the starting point in the list
# but stay identical each time it's called for a server (based on hostname).
salt=$(hostname | cksum | cut -d' ' -f1)
# Pick an integer between 0 and the length of the SERVERS list
# It changes each day
item=$(( (today + salt + increment) % list_length ))
# cut starts counting fields at 1, not 0.
field=$(( item + 1 ))
echo "${SERVERS}" | cut -d' ' -f${field}
}
## Verify other evobackup process and kill if needed
if [ -e "${PIDFILE}" ]; then
pid=$(cat "${PIDFILE}")
# Does process still exist ?
if kill -0 "${pid}" 2> /dev/null; then
# Killing the childs of evobackup.
for ppid in $(pgrep -P "${pid}"); do
kill -9 "${ppid}";
done
# Then kill the main PID.
kill -9 "${pid}"
printf "%s is still running (PID %s). Process has been killed" "$0" "${pid}\\n" >&2
else
rm -f ${PIDFILE}
fi
fi
echo "$$" > ${PIDFILE}
# shellcheck disable=SC2064
trap "rm -f ${PIDFILE}" EXIT
##### LOCAL BACKUP ####################################################
if [ "${LOCAL_TASKS}" = "1" ]; then
# You can comment or uncomment sections below to customize the backup
## OpenLDAP : example with slapcat
# slapcat -n 0 -l ${LOCAL_BACKUP_DIR}/config.ldap.bak
# slapcat -n 1 -l ${LOCAL_BACKUP_DIR}/data.ldap.bak
# slapcat -l ${LOCAL_BACKUP_DIR}/ldap.bak
## MySQL
## example with global and compressed mysqldump
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
# --opt --all-databases --force --events --hex-blob | gzip --best > ${LOCAL_BACKUP_DIR}/mysql.bak.gz
## example with two dumps for each table (.sql/.txt) for all databases
# for i in $(echo SHOW DATABASES | mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
# | egrep -v "^(Database|information_schema|performance_schema|sys)" ); \
# do mkdir -p -m 700 /home/mysqldump/$i ; chown -RL mysql /home/mysqldump ; \
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 -Q --opt --events --hex-blob --skip-comments \
# --fields-enclosed-by='\"' --fields-terminated-by=',' -T /home/mysqldump/$i $i; done
## Dump all grants (requires 'percona-toolkit' package)
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
# pt-show-grants --flush --no-header > ${LOCAL_BACKUP_DIR}/mysql/all_grants.sql
## example with SQL dump (schema only, no data) for each databases
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
# for i in $(mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 -e 'show databases' -s --skip-column-names \
# | egrep -v "^(Database|information_schema|performance_schema|sys)"); do
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --no-data --databases $i > ${LOCAL_BACKUP_DIR}/mysql/${i}.schema.sql
# done
## example with compressed SQL dump (with data) for each databases
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
# for i in $(mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 -e 'show databases' -s --skip-column-names \
# | egrep -v "^(Database|information_schema|performance_schema|sys)"); do
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --events --hex-blob $i | gzip --best > ${LOCAL_BACKUP_DIR}/mysql/${i}.sql.gz
# done
## example with *one* uncompressed SQL dump for *one* database (MYBASE)
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/MYBASE
# chown -RL mysql ${LOCAL_BACKUP_DIR}/mysql/
# mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -Q \
# --opt --events --hex-blob --skip-comments -T ${LOCAL_BACKUP_DIR}/mysql/MYBASE MYBASE
## example with mysqlhotcopy
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysqlhotcopy/
# mysqlhotcopy BASE ${LOCAL_BACKUP_DIR}/mysql/mysqlhotcopy/
## example for multiples MySQL instances
# mysqladminpasswd=$(grep -m1 'password = .*' /root/.my.cnf|cut -d" " -f3)
# grep -E "^port\s*=\s*\d*" /etc/mysql/my.cnf |while read instance; do
# instance=$(echo "$instance"|awk '{ print $3 }')
# if [ "$instance" != "3306" ]
# then
# mysqldump -P $instance --opt --all-databases --hex-blob -u mysqladmin -p$mysqladminpasswd > ${LOCAL_BACKUP_DIR}/mysql.$instance.bak
# fi
# done
## PostgreSQL
## example with pg_dumpall (warning: you need space in ~postgres)
# su - postgres -c "pg_dumpall > ~/pg.dump.bak"
# mv ~postgres/pg.dump.bak ${LOCAL_BACKUP_DIR}/
## another method with gzip directly piped
# cd /var/lib/postgresql
# sudo -u postgres pg_dumpall | gzip > ${LOCAL_BACKUP_DIR}/pg.dump.bak.gz
# cd - > /dev/null
## example with all tables from MYBASE excepts TABLE1 and TABLE2
# pg_dump -p 5432 -h 127.0.0.1 -U USER --clean -F t --inserts -f ${LOCAL_BACKUP_DIR}/pg-backup.tar -t 'TABLE1' -t 'TABLE2' MYBASE
## example with only TABLE1 and TABLE2 from MYBASE
# pg_dump -p 5432 -h 127.0.0.1 -U USER --clean -F t --inserts -f ${LOCAL_BACKUP_DIR}/pg-backup.tar -T 'TABLE1' -T 'TABLE2' MYBASE
## MongoDB
## don't forget to create use with read-only access
## > use admin
## > db.createUser( { user: "mongobackup", pwd: "PASS", roles: [ "backup", ] } )
# test -d ${LOCAL_BACKUP_DIR}/mongodump/ && rm -rf ${LOCAL_BACKUP_DIR}/mongodump/
# mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mongodump/
# mongodump --quiet -u mongobackup -pPASS -o ${LOCAL_BACKUP_DIR}/mongodump/
# if [ $? -ne 0 ]; then
# echo "Error with mongodump!"
# fi
## Redis
## example with copy .rdb file
## for the default instance :
# cp /var/lib/redis/dump.rdb ${LOCAL_BACKUP_DIR}/
## for multiple instances :
# for instance in $(ls -d /var/lib/redis-*); do
# name=$(basename $instance)
# mkdir -p ${LOCAL_BACKUP_DIR}/${name}
# cp -a ${instance}/dump.rdb ${LOCAL_BACKUP_DIR}/${name}
# done
## ElasticSearch
## Take a snapshot as a backup.
## Warning: You need to have a path.repo configured.
## See: https://wiki.evolix.org/HowtoElasticsearch#snapshots-et-sauvegardes
# curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot.daily" -o /tmp/es_delete_snapshot.daily.log
# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot.daily?wait_for_completion=true" -o /tmp/es_snapshot.daily.log
## Clustered version here
## It basically the same thing except that you need to check that NFS is mounted
# if ss | grep ':nfs' | grep -q 'ip\.add\.res\.s1' && ss | grep ':nfs' | grep -q 'ip\.add\.res\.s2'
# then
# curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/snapshot.daily" -o /tmp/es_delete_snapshot.daily.log
# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot.daily?wait_for_completion=true" -o /tmp/es_snapshot.daily.log
# else
# echo 'Cannot make a snapshot of elasticsearch, at least one node is not mounting the repository.'
# fi
## If you need to keep older snapshot, for example the last 10 daily snapshots, replace the XDELETE and XPUT lines by :
# for snapshot in $(curl -s -XGET "localhost:9200/_snapshot/snaprepo/_all?pretty=true" | grep -Eo 'snapshot_[0-9]{4}-[0-9]{2}-[0-9]{2}' | head -n -10); do
# curl -s -XDELETE "localhost:9200/_snapshot/snaprepo/${snapshot}" | grep -v -Fx '{"acknowledged":true}'
# done
# date=$(date +%F)
# curl -s -XPUT "localhost:9200/_snapshot/snaprepo/snapshot_${date}?wait_for_completion=true" -o /tmp/es_snapshot_${date}.log
## RabbitMQ
## export config
#rabbitmqadmin export ${LOCAL_BACKUP_DIR}/rabbitmq.config >> $LOGFILE
## MegaCli config
#megacli -CfgSave -f ${LOCAL_BACKUP_DIR}/megacli_conf.dump -a0 >/dev/null
## Dump system and kernel versions
uname -a > ${LOCAL_BACKUP_DIR}/uname
## Dump network routes with mtr and traceroute (warning: could be long with aggressive firewalls)
for addr in 8.8.8.8 www.evolix.fr travaux.evolix.net; do
mtr -r ${addr} > ${LOCAL_BACKUP_DIR}/mtr-${addr}
traceroute -n ${addr} > ${LOCAL_BACKUP_DIR}/traceroute-${addr} 2>&1
done
## Dump process with ps
ps auwwx >${LOCAL_BACKUP_DIR}/ps.out
if [ "${SYSTEM}" = "linux" ]; then
## Dump network connections with ss
ss -taupen > ${LOCAL_BACKUP_DIR}/netstat.out
## List Debian packages
dpkg -l > ${LOCAL_BACKUP_DIR}/packages
dpkg --get-selections > ${LOCAL_BACKUP_DIR}/packages.getselections
apt-cache dumpavail > ${LOCAL_BACKUP_DIR}/packages.available
## Dump MBR / table partitions
disks=$(lsblk -l | grep disk | grep -v -E '(drbd|fd[0-9]+)' | awk '{print $1}')
for disk in ${disks}; do
dd if="/dev/${disk}" of="${LOCAL_BACKUP_DIR}/MBR-${disk}" bs=512 count=1 2>&1 | grep -Ev "(records in|records out|512 bytes)"
fdisk -l "/dev/${disk}" > "${LOCAL_BACKUP_DIR}/partitions-${disk}" 2>&1
done
cat ${LOCAL_BACKUP_DIR}/partitions-* > ${LOCAL_BACKUP_DIR}/partitions
## Dump iptables
if [ -x /sbin/iptables ]; then
{ /sbin/iptables -L -n -v; /sbin/iptables -t filter -L -n -v; } > ${LOCAL_BACKUP_DIR}/iptables.txt
fi
## Dump findmnt(8) output
FINDMNT_BIN=$(command -v findmnt)
if [ -x "${FINDMNT_BIN}" ]; then
${FINDMNT_BIN} > ${LOCAL_BACKUP_DIR}/findmnt.txt
fi
else
## Dump network connections with netstat
netstat -finet -atn > ${LOCAL_BACKUP_DIR}/netstat.out
## List OpenBSD packages
pkg_info -m > ${LOCAL_BACKUP_DIR}/packages
## Dump MBR / table partitions
disklabel sd0 > ${LOCAL_BACKUP_DIR}/partitions
## Dump pf infos
pfctl -sa > ${LOCAL_BACKUP_DIR}/pfctl-sa.txt
fi
## Dump rights
#getfacl -R /var > ${LOCAL_BACKUP_DIR}/rights-var.txt
#getfacl -R /etc > ${LOCAL_BACKUP_DIR}/rights-etc.txt
#getfacl -R /usr > ${LOCAL_BACKUP_DIR}/rights-usr.txt
#getfacl -R /home > ${LOCAL_BACKUP_DIR}/rights-home.txt
fi
##### REMOTE BACKUP ###################################################
n=0
server=""
if [ "${SERVERS_FALLBACK}" = "1" ]; then
# We try to find a suitable server
while :; do
server=$(pick_server "${n}")
test $? = 0 || exit 2
if test_server "${server}"; then
break
else
server=""
n=$(( n + 1 ))
fi
done
else
# we force the server
server=$(pick_server "${n}")
fi
SSH_SERVER=$(echo "${server}" | cut -d':' -f1)
SSH_PORT=$(echo "${server}" | cut -d':' -f2)
HOSTNAME=$(hostname)
if [ "${SYSTEM}" = "linux" ]; then
rep="/bin /boot /lib /opt /sbin /usr"
else
rep="/bsd /bin /sbin /usr"
fi
if [ "${SYNC_TASKS}" = "1" ]; then
# /!\ DO NOT USE COMMENTS in the rsync command /!\
# It breaks the command and destroys data, simply remove (or add) lines.
# Remote shell command
RSH_COMMAND="ssh -p ${SSH_PORT} -o 'ConnectTimeout ${SSH_CONNECT_TIMEOUT}'"
# ignore check because we want it to split the different arguments to $rep
# shellcheck disable=SC2086
rsync -avzh --relative --stats --delete --delete-excluded --force --ignore-errors --partial \
--exclude "dev" \
--exclude "lost+found" \
--exclude ".nfs.*" \
--exclude "/usr/doc" \
--exclude "/usr/obj" \
--exclude "/usr/share/doc" \
--exclude "/usr/src" \
--exclude "/var/apt" \
--exclude "/var/cache" \
--exclude "/var/lib/amavis/amavisd.sock" \
--exclude "/var/lib/amavis/tmp" \
--exclude "/var/lib/clamav/*.tmp" \
--exclude "/var/lib/elasticsearch" \
--exclude "/var/lib/metche" \
--exclude "/var/lib/munin/*tmp*" \
--exclude "/var/db/munin/*.tmp" \
--exclude "/var/lib/mysql" \
--exclude "/var/lib/php5" \
--exclude "/var/lib/php/sessions" \
--exclude "/var/lib/postgres" \
--exclude "/var/lib/postgresql" \
--exclude "/var/lib/sympa" \
--exclude "/var/lock" \
--exclude "/var/log" \
--exclude "/var/log/evobackup*" \
--exclude "/var/run" \
--exclude "/var/spool/postfix" \
--exclude "/var/spool/smtpd" \
--exclude "/var/spool/squid" \
--exclude "/var/state" \
--exclude "lxc/*/rootfs/usr/doc" \
--exclude "lxc/*/rootfs/usr/obj" \
--exclude "lxc/*/rootfs/usr/share/doc" \
--exclude "lxc/*/rootfs/usr/src" \
--exclude "lxc/*/rootfs/var/apt" \
--exclude "lxc/*/rootfs/var/cache" \
--exclude "lxc/*/rootfs/var/lib/php5" \
--exclude "lxc/*/rootfs/var/lock" \
--exclude "lxc/*/rootfs/var/log" \
--exclude "lxc/*/rootfs/var/run" \
--exclude "lxc/*/rootfs/var/state" \
--exclude "/home/mysqltmp" \
${rep} \
/etc \
/root \
/var \
/home \
-e "${RSH_COMMAND}" \
"root@${SSH_SERVER}:/var/backup/" \
| tail -30 >> $LOGFILE
fi
##### REPORTING #######################################################
END=$(/bin/date +"%d-%m-%Y ; %H:%M")
printf "EvoBackup - %s - START %s ON %s (LOCAL_TASKS=%s SYNC_TASKS=%s)\\n" \
"${HOSTNAME}" "${BEGINNING}" "${SSH_SERVER}" "${LOCAL_TASKS}" "${SYNC_TASKS}" \
>> $LOGFILE
printf "EvoBackup - %s - STOP %s ON %s (LOCAL_TASKS=%s SYNC_TASKS=%s)\\n" \
"${HOSTNAME}" "${END}" "${SSH_SERVER}" "${LOCAL_TASKS}" "${SYNC_TASKS}" \
>> $LOGFILE
tail -10 $LOGFILE | \
mail -s "[info] EvoBackup - Client ${HOSTNAME}" \
${MAIL}