Mysql Crash Recovery: Difference between revisions
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2) mysql -NB -e "show databases" | grep mbox > /tmp/mysql.db.list [Make a list of the existing database] | 2) <tt> mysql -NB -e "show databases" | grep mbox > /tmp/mysql.db.list [Make a list of the existing database] </tt> | ||
3) mkdir /tmp/mysql.sql | 3) <tt> mkdir /tmp/mysql.sql </tt> | ||
4) mysqldump zimbra -S /opt/zimbra/db/mysql.sock -u root -p | 4) <tt> mysqldump zimbra -S /opt/zimbra/db/mysql.sock -u root -p password_for_mysql_root > /tmp/mysql.sql/zimbra.sql </tt> | ||
[ | ['''Mysql Root Password''' you can get this by 'zmlocalconfig -s -m nokey mysql_root_password'] | ||
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for db in `< /tmp/mysql.db.list`; \do /opt/zimbra/mysql/bin/mysqldump $db -S /opt/zimbra/db/mysql.sock -u zimbra -ppvbaAlDCHQ8UtMcY2oqNo91kyyqdX0 > | <tt> for db in `< /tmp/mysql.db.list`; \do /opt/zimbra/mysql/bin/mysqldump $db -S /opt/zimbra/db/mysql.sock -u zimbra -ppvbaAlDCHQ8UtMcY2oqNo91kyyqdX0 > | ||
/tmp/mysql.sql/$db.sql; \echo -e "Dumped $db\n"; \done; | /tmp/mysql.sql/$db.sql; \echo -e "Dumped $db\n"; \done; </tt> | ||
[ | ['''Mysql Zimbra Password''' You can get the password: zmlocalconfig -s -m nokey zimbra_mysql_password] | ||
6) | 6) Drop the Database: | ||
for db in `< /tmp/mysql.db.list`; \ do mysql -e "drop database $db"; \echo -e "Dropped $db"; \done; | <tt> for db in `< /tmp/mysql.db.list`; \ do mysql -e "drop database $db"; \echo -e "Dropped $db"; \done; </tt> | ||
7) mysql -e "drop database zimbra" | 7) <tt> mysql -e "drop database zimbra" </tt> | ||
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mysql -e "create database zimbra character set utf8" | <tt> mysql -e "create database zimbra character set utf8" </tt> | ||
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for db in `< /tmp/mysql.db.list`; \ do mysql -e "create database $db character set utf8"; \ | <tt> for db in `< /tmp/mysql.db.list`; \ do mysql -e "create database $db character set utf8"; \ | ||
echo -e "Created $db \n";done; | echo -e "Created $db \n";done; </tt> | ||
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for sql in /tmp/mysql.sql/mbox*; \ do mysql `basename $sql .sql` < $sql; \echo -e "Updated `basename $sql .sql` \n"; \done; | <tt> for sql in /tmp/mysql.sql/mbox*; \ do mysql `basename $sql .sql` < $sql; \echo -e "Updated `basename $sql .sql` \n"; \done; </tt> | ||
Revision as of 10:26, 16 August 2007
Mysql Crash Recovery
BUG "http://bugzilla.zimbra.com/show_bug.cgi?id=15797"
Mysql Crash recovery is performed when Mysql stops responding and there is error in the /opt/zimbra/db/data/hostname.err [Please check the BUG above for more information]
Steps to perform Recovery:
- Edit /opt/zimbra/conf/my.cnf: Put an entry :- innodb_force_recovery = 3
- Dump the database:- mysqldump zimbra and mboxgroup DB's
- Drop all Database's.
- Create all Database's.
- Restore dump data.
1) Edit the my.cnf file and put innodb_force_recovery = 3 : save the file and start mysql. [mysql.server start]
2) mysql -NB -e "show databases" | grep mbox > /tmp/mysql.db.list [Make a list of the existing database]
3) mkdir /tmp/mysql.sql
4) mysqldump zimbra -S /opt/zimbra/db/mysql.sock -u root -p password_for_mysql_root > /tmp/mysql.sql/zimbra.sql
[Mysql Root Password you can get this by 'zmlocalconfig -s -m nokey mysql_root_password']
5) Dumping Databases: Run the following command from the prompt:
for db in `< /tmp/mysql.db.list`; \do /opt/zimbra/mysql/bin/mysqldump $db -S /opt/zimbra/db/mysql.sock -u zimbra -ppvbaAlDCHQ8UtMcY2oqNo91kyyqdX0 >
/tmp/mysql.sql/$db.sql; \echo -e "Dumped $db\n"; \done;
[Mysql Zimbra Password You can get the password: zmlocalconfig -s -m nokey zimbra_mysql_password]
6) Drop the Database:
for db in `< /tmp/mysql.db.list`; \ do mysql -e "drop database $db"; \echo -e "Dropped $db"; \done;
7) mysql -e "drop database zimbra"
8) Run Mysql in Non-Recovery Mode:
Remove the innodb_force_recovery = 3 from the my.cnf file.
Stop Mysql Server and Start again.
9) Create Database:
mysql -e "create database zimbra character set utf8"
10) Create the existed Database:
for db in `< /tmp/mysql.db.list`; \ do mysql -e "create database $db character set utf8"; \
echo -e "Created $db \n";done;
11) mysql zimbra < /tmp/mysql.sql/zimbra.sql
12) Update Mboxgroup:
for sql in /tmp/mysql.sql/mbox*; \ do mysql `basename $sql .sql` < $sql; \echo -e "Updated `basename $sql .sql` \n"; \done;
13) zmcontrol start
14) Check if everything is up and running.