I have ordered a new server Centos 4.3 with Cpanel WHM 10.8.0 cPanel 10.8.2-R119. When I have transfered old server all accounts to this new server, Some sites mysql database had a few problems. I found the new server is MySQL 4.1.xx and my old server is MySQL 4.0.xx. So i decide to downgrade MYSQL 4.1.X to MySQL 4.0.xx. cPanel Tweak Settings only have MYSQL 4.1 or MYSQL 5.0 , so I vi /var/cpanel/cpanel.config,change mysql-version=4.1 into mysql-version=4. then, you have to do the following:
cp -fr /var/lib/mysql /var/lib/mysql.old
rm -fr /var/lib/mysql
rm -f /usr/sbin/mysqld
/scripts/mysqlup'force when installed mysql ,I found a problem. ............................................................ Attempting to restart mysql
Waiting for mysql to restart'. . . . . . . . . . . finished. mysql status /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)' Check that mysqld is running and that the socket: '/var/lib/mysql/mysql.sock' exists! mysql has failed, please contact the sysadmin (result was "Warning, no valid mysql.sock file found.mysql has failed").
.......................................................... when I was checking mysql logs , I found the problem was /etc/my.cnf. which needed to edit /etc/my.cnf with the edition of mysql 4.0.xx, such as
................................................................................... [mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock skip-locking
skip-bdb
skip-innodb
back_log = 200
query_cache_limit=1M
query_cache_type=1
query_cache_size = 16M
interactive_timeout=10
connect_timeout=2
max_connections=500
wait_timeout=10
long_query_time=5
thread_cache = 8
thread_concurrency = 4 key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 1M
net_buffer_length = 8K
myisam_sort_buffer_size = 64M [mysql.server]
user=mysql
basedir=/var/lib [safe_mysqld]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
...................................................................................................... then, you have to do the following:
cp -fr /var/lib/mysql /var/lib/mysql.old
rm -fr /var/lib/mysql
rm -f /usr/sbin/mysqld
/scripts/mysqlup'force If you install mysql finished ,Cpanel downgrade MYSQL 4.1.X to MySQL 4.0.xx . If you find some bug ,please connect with me, EMAIL:webmaster@webhosting-live.com Webhosting-live.com is a Web Hosting Directory.The free source of web hosting,Unix Hosting,Windows Hosting,Dedicated Hosting,Ecommerce Hosting,Virtual Private Servers,Domain Registration in a searchable web host directory. |
