fabiolagana.net » bash

Eseguire il backup delle directory di un server

Fabio Laganà — Tue, 28 Apr 2009 08:01:22 +0000

nome script: /usr/local/sbin/backup_dir.sh

descrizione: Con questo script viene fatto il backup delle directory importanti server

Inserendo una riga simile nel cron scheduliamo il backup tutte le notti

cat /etc/cron.d/backup
MAILTO="postmaster@yourdomain.com"
00 21 * * * root test -x /usr/local/sbin/backup_dir.sh && /usr/local/sbin/backup_dir.sh

#!/bin/bash
#
# backup_dir.sh
# Con questo script viene fatto il backup delle directory importanti  server
#
hosts_internal=( your_host )
 
for host in ${hosts_internal[@]}
do
  echo "Download of /etc/ /usr/local/sbin/ /root/ /home/ directory from "$host" "
  echo -n "Starting ------>"
  date
  # bakup file for hosts
  tar -zcvf /var/backups/backup_files_"$host"_`date +"%d%m%Y"`.tar.gz /etc/ /usr/local/sbin/ /root/ /home/ ;
  mv /var/backups/backup_files_"$host"_`date +"%d%m%Y"`.tar.gz /backups/"$host"/;
  rm -f /var/backups/backup_files_"$host"_`date +"%d%m%Y"`.tar.gz
  echo -n "Stopping ------>"
  date
  echo ""
done

Count domain in mail.log (Qmail)

Fabio Laganà — Fri, 20 Feb 2009 05:34:56 +0000

# cat /usr/local/sbin/count_mail_per_domain.sh
#!/bin/bash
logfile=$2
domain=$3
 
case "$1" in
        -t)
	cat $logfile |grep "to remote" | awk '{print $14}'
					| awk -F@ '{ field = $2 }; {print "domain: " field }'
					| sort |uniq -c |sort -nr
					| awk -v totale=0 '{totale=totale+$1; print ;} END {print "Totale giorno domini: "totale;}'
            ;;
 
        -su)
	cat $logfile |grep "to remote"  |grep -i "$domain"
					|awk ' { field = $14 }; {print "to remote: " field }'
					| sort| uniq -c| sort -nr
					| awk -v totale=0 '{totale=totale+$1; print ;} END {print "Totale giorno domini per utente: "totale;}'
            ;;
	-s)
        cat $logfile |grep "to remote"  |grep -i "$domain" |awk '{print $14}'
                                        | awk -F@ '{ field = $2 }; {print "to remote domain: " field }'
                                        | sort| uniq -c| sort -nr
                                        | awk -v totale=0 '{totale=totale+$1; print ;} END {print "Totale giorno domini: "totale;}'
 
         ;;
        *)
            echo $"Usage: $0 { -t /var/log/mail.log.0 }  for print total mail for domain "
            echo $"Usage: $0 { -su /var/log/mail.log.0 domain.com } for print total mail for single domain per user"
            echo $"Usage: $0 { -s /var/log/mail.log.0 domain.com } for print total mail for single domain"
            exit 1
 
esac

for more tips visit qmail relay to smarthost

Update Expired SSL Certs

Fabio Laganà — Wed, 29 Oct 2008 11:17:06 +0000

- Farsi una copia del vecchio certificato
cd /etc/ssl/certs
cp -ap pop3ss.pem pop3s.pem.scaduto
 
- Ricreazione nuovo certificato
cd /etc/ssl
openssl req -new -x509 -nodes -days 3650 -newkey rsa:1024 -keyout private/pop3s.key -out pop3s.cert
touch certs/pop3s-new.pem
chmod 600 certs/pop3s-new.pem
cat private/pop3s.key pop3s.cert > certs/pop3s-new.pem
dd if=/dev/urandom count=2 | openssl dhparam -rand - 512
pico certs/pop3s-new.pem
chown vpopmail certs/pop3s-new.pem
cd certs
mv pop3s-new.pem pop3s.pem
 
-- rollback in caso qualcosa andasse storto --
mv pop3s.pem.scaduto pop3s.pem

Bash script for checking mysql problem by reading daemon.log

Fabio Laganà — Wed, 06 Aug 2008 21:27:34 +0000

#!/bin/bash
 
### Checking del daemon.log per eventuali problemi sul DB MySQL
# rel. 0.3 - 01 Agosto 2008
 
# time_to_check_min=`date +"%b %d %k:%M" -d "-1 min"`
# time_to_check_hour=`date +"%b %d %k:%M" -d "-1 hour"`
file_to_check=/var/log/daemon.log
tmp_file=/tmp/info.tmp.01.$$
tmp_file1=/tmp/info.tmp.02.$$
host=`cat /etc/hostname`
semaphore=/tmp/.flag_checking_daemon_log
 
daemon=mysql
 
if [[ -e $semaphore ]];
  then
    echo "checking for mysqld....Nothing to do ....another cron is still working"
  else
    touch $semaphore
if [[ `date +"%d"` &lt; '10' ]]; then
    time_to_check_min=`date +"%b %d %k:%M" -d "-1 min"| sed -r 's/[[:space:]](0)([1-9])[[:space:]]/  2 /'`
    time_to_check_hour=`date +"%b %d %k:%M" -d "-1 hour"| sed -r 's/[[:space:]](0)([1-9])[[:space:]]/  2 /'`
else
    time_to_check_min=`date +"%b %d %k:%M" -d "-1 min"`
    time_to_check_hour=`date +"%b %d %k:%M" -d "-1 hour"`
fi
#echo "checking for ""$file_to_check  $time_to_check_min"
grep "$time_to_check_min" "$file_to_check" &gt; $tmp_file
grep "$daemon" "$tmp_file" &gt; $tmp_file1
if [[ -e $tmp_file1 ]];
    then
        if [[ -s $tmp_file1 ]]; then
            mail -s "Something happening on [ $daemon ] for ""$host" tech-c@bakeca.it &lt; $tmp_file1
        fi
        #remove the tmp_file
        rm -f $tmp_file
        rm -f $tmp_file1
    fi
   #removing the semaphore
   rm -f $semaphore
fi