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Script to move a statusnetwork from one db server to another

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This script helps move a statusnetwork from one DB server to
another. It's for use with multi-site installations (like status.net).
This commit is contained in:
Evan Prodromou 2011-10-16 04:44:08 -04:00
parent e78d84556e
commit b42cc773ed
1 changed files with 102 additions and 0 deletions
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scripts/move_status_network.sh Executable file
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#!/bin/bash
# live fast! die young!
set -e
# move_status_network.sh nickname newserver
export nickname="$1"
export newdbhost="$2"
source /etc/statusnet/setup.cfg
function set_maintenance_mode()
{
local nickname=$1;
php $PHPBASE/scripts/settag.php $nickname maintenancemode;
}
function get_current_db_info()
{
local nickname=$1;
#FIXME I couldn't make this work better
export dbhost=`mysql -NB -h $SITEDBHOSTNAME -u $ADMIN --password=$ADMINPASS -e "SELECT dbhost FROM status_network WHERE nickname = '$nickname'" $SITEDB`
export dbuser=`mysql -NB -h $SITEDBHOSTNAME -u $ADMIN --password=$ADMINPASS -e "SELECT dbuser FROM status_network WHERE nickname = '$nickname'" $SITEDB`
export dbpass=`mysql -NB -h $SITEDBHOSTNAME -u $ADMIN --password=$ADMINPASS -e "SELECT dbpass FROM status_network WHERE nickname = '$nickname'" $SITEDB`
export dbname=`mysql -NB -h $SITEDBHOSTNAME -u $ADMIN --password=$ADMINPASS -e "SELECT dbname FROM status_network WHERE nickname = '$nickname'" $SITEDB`
}
function create_empty_db()
{
local newdbhost=$1;
local dbuser=$2;
local dbpass=$3;
local dbname=$4;
mysqladmin -h $newdbhost -u $ADMIN --password=$ADMINPASS create $dbname;
mysql -h $newdbhost -u $ADMIN --password=$ADMINPASS -e "GRANT ALL ON $dbname.* TO '$dbuser'@'localhost' IDENTIFIED BY '$dbpass';" $dbname;
mysql -h $newdbhost -u $ADMIN --password=$ADMINPASS -e "GRANT ALL ON $dbname.* TO '$dbuser'@'%' IDENTIFIED BY '$dbpass';" $dbname;
}
function transfer_data()
{
local dbhost=$1;
local newdbhost=$2;
local dbuser=$3;
local dbpass=$4;
local dbname=$5;
local dumpfile=`mktemp`;
mysqldump -h $dbhost -u $ADMIN --password=$ADMINPASS $dbname > $dumpfile;
mysql -h $newdbhost -u $ADMIN --password=$ADMINPASS $dbname < $dumpfile;
rm $dumpfile;
}
function update_routing_table()
{
local nickname=$1;
local newdbhost=$2;
mysql -h $SITEDBHOSTNAME -u $ADMIN --password=$ADMINPASS -e "UPDATE status_network set dbhost = '$newdbhost' where nickname = '$nickname'" $SITEDB
}
function flush_site()
{
local nickname=$1;
php $PHPBASE/scripts/flushsite.php -s$nickname.$WILDCARD
}
function unset_maintenance_mode()
{
local nickname=$1;
php $PHPBASE/scripts/settag.php -d $nickname maintenancemode;
}
echo -n Setting maintenance mode on $nickname...
set_maintenance_mode $nickname
echo DONE.
echo -n Getting current database info...
get_current_db_info $nickname
echo DONE.
echo -n Creating empty $dbname database on server $newdbhost...
create_empty_db $newdbhost $dbuser $dbpass $dbname
echo DONE
echo -n Copying $dbname database from $dbhost to $newdbhost...
transfer_data $dbhost $newdbhost $dbuser $dbpass $dbname
echo DONE
echo -n Updating the routing table for $nickname to use $dbname on $newdbhost...
update_routing_table $nickname $newdbhost
echo DONE
echo -n Flushing $nickname site from cache...
flush_site $nickname
echo DONE
echo -n Turning off maintenance mode on $nickname...
unset_maintenance_mode $nickname
echo DONE.