I am running my system with the logs going into a dated directory. Then
each night, I have a cron job that tars up the previous days directory.
Here is my script for the archive_command:
#!/bin/bash
echo "start" >> ~/archive_log_timings
date >> ~/archive_log_timings
source /home/postgres/etc/postgres.profile
## setup variables
archiveFile=$1 ## full path with filename to be archived
archiveFileName=$2 ## the file name to be archived
serverPort=$3 ## port the server is running on
serverName=`/bin/hostname` ## the name of this machine
returnValue=0 ## Set the return code to success ( 1 for
failur
e)
DATE=`/bin/date +%Y%m%d`
fullArchiveDir=`echo
${archiveBaseDir}/${serverName}/${serverPort}/pg_xlog_arch/
${DATE}`
## make sure the mount point is available
if [ ! -d $archiveBaseDir ]
then
returnValue=1
echo "`/bin/hostname` missing directory $archiveBaseDir" | mail -s "URGENT
DB
ISSUE" $DBAPAGER
sleep 300
else
## make sure the proper directory tree exists. If not build it.
mkdir -p $fullArchiveDir
## get an md5sum of the original file
originalMD5=`md5sum $archiveFile| awk '{print $1}'`
## copy of file to the new location
cp -i ${archiveFile} ${fullArchiveDir}/. < /dev/null
## get an md5sum of the copied file
copiedMD5=`md5sum ${fullArchiveDir}/$archiveFileName | awk '{print $1}'`
## see if the sums match
if [ "$originalMD5" = "$copiedMD5" ]
then
## remove the file from the current archive save directory
currentArchiveDir=`echo
${archiveBaseDir}/${serverName}/${serverPort}/curren
t_log`
rm ${currentArchiveDir}/$archiveFileName ##2>/dev/null
###bzip2 ${fullArchiveDir}/$archiveFileName
returnValue=0
else
returnValue=1
echo "`/bin/hostname` - LOG ARCHIVE FAILED - `date`" | mail -s "URGENT
DB IS
SUE" $DBAPAGER
sleep 300
fi
fi
echo "done" >> ~/archive_log_timings
date >> ~/archive_log_timings
exit $returnValue
----
Here is my tar command in cron:
cd /postgresql/<port>/pg_xlog_arch/archive/<hostname>/<port>/pg_xlog_arch/
/usr/bin/find . -type d -mtime +1 |
/bin/sort |
/bin/sed 's/\.\///' |
while read DIR
do
/bin/tar -cvzf ${DIR}.tar.gz $DIR
/bin/rm -r $DIR
done
I think the tar script could use some further refinement, but for now it
works.
Chris
On 4/11/07, Sean Murphy <[EMAIL PROTECTED]> wrote:
I'm in the process of moving an 8.2 server from Win32 to Ubuntu Linux.
On Win32, I implemented WAL archiving with the archive_command
"rar a -ep -m5 -s -t -dh w:/%f.rar %p"
Anyway, I'm going to use WAL archiving on the new server, and need the
files to be compressed. My first inclination is to use
"tar -czf /walarchive/%f.tar.gz %p > /dev/null"
Before I go with that, though, I was wondering if anybody had any
specific experience / advice with a better command, reasons why this
command might fail zero or succeed nonzero, or additional/different
options for tar that would yield better results.
Thanks,
Sean
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