Galera 10.0.20 on CentOS 6.6
0.使用場景
數據庫軟件：mariadb-galera-10.0.20-linux-x86_64.tar.gz
集群管理：galera-3-25.3.10
節點同步方式（xtrabackup,rsync)：percona-xtrabackup-2.2.8-5059.el6.x86_64.rpm
節點同步使用sockt：socat-2.0.0-b7.tar.gz
安裝galera是為了獲得libgalera_smm.so；
安裝xtrabackup是為了配置同步方式xtrabackup，節點數據同步的時候用到；
安裝socat是因為同步數據使用socket方式進行端到端的數據交換；
數據庫節點:
127.0.0.1 localhost localhost
192.168.50.10 db01 db01.mysql.com
192.168.50.20 db02 db02.mysql.com
192.168.50.30 db03 db03.mysql.com
1.系統安裝
——–0.刪除postfix
yum remove postfix
——–1.系統安裝
參見:Linux for Mysql 系統安裝規范
——-2 配置yum源
cd /etc/yum.repos.d
mv CentOS-Base.repo CentOS-Base.repo.old
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
yum makecache
檢查可更新的rpm包
更新所有的rpm包
—3.關閉防火牆和selinux
chkconfig –level 123456 iptables off
service iptables stop
/usr/sbin/sestatus -v | grep “SELinux status”
vi /etc/selinux/config
SELINUX=disabled
—4.修改各個節點hosts
192.168.50.10 db01 db01.mysql.com
192.168.50.20 db02 db02.mysql.com
192.168.50.30 db03 db03.mysql.com
—4.rz
yum install lrzsz -y
2.mysql安裝部分
一：卸載舊版本
使用下面的命令檢查是否安裝有MySQL Server
rpm -qa | grep mysql
有的話通過下面的命令來卸載掉
rpm -e mysql //普通刪除模式
rpm -e –nodeps mysql
rpm -e –nodeps mysql-devel
rpm -e –nodeps mysql-libs
// 強力刪除模式，如果使用上面命令刪除時，提示有依賴的其它文件，
則用該命令可以對其進行強力刪除
yum remove mysql-libs
二：安裝MySQL
1.安裝編譯代碼需要的包
yum -y install cmake gcc gcc-c++ autoconf automake zlib* libxml* \
ncurses ncurses-devel libtool libtool-ltdl-devel* make bison bison-devel \
openssl-devel libevent-devel \
libaio libaio-devel pam-devel boost boost-devel valgrind-devel \
libnl-devel popt-devel popt-static bzr
2.為mysql新建組和用戶
groupadd mysql
useradd -s /sbin/nologin -g mysql -M mysql
passwd mysql
mysql01!
id mysql
3.設置用戶的系統資源限制
mysql soft nproc 2047
mysql hard nproc 16384
mysql soft nofile 1024
mysql hard nofile 65536
4.編譯安裝
tar xf mariadb-galera-10.0.20.tar.gz
cd mariadb-10.0.20
編譯安裝
/*
cmake . -LH –查看cmake支持的mysql相關參數
shell> cmake . -L # overview
shell> cmake . -LH # overview with help text
shell> cmake . -LAH # all params with help text
shell> ccmake . # interactive display
重新編譯時，需要清除舊的對象文件和緩存信息
# make clean
# rm -f CMakeCache.txt
**/
cmake \
-DCMAKE_INSTALL_PREFIX=/data/mysql \
-DMYSQL_UNIX_ADDR=/data/mysql/mysql.sock \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_MYISAM_STORAGE_ENGINE=1 \
-DWITH_SPHINX_STORAGE_ENGINE=1 \
-DWITH_READLINE=1 \
-DMYSQL_DATADIR=/data/mysql/data \
-DMYSQL_TCP_PORT=33306 \
-DENABLED_LOCAL_INFILE=1 \
-DWITH_EXTRA_CHARSETS=all \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DEXTRA_CHARSETS=all \
-DWITH_WSREP=1 \
-DWITH_INNODB_DISALLOW_WRITES=1
make -j4
make install
三：配置MySQL
1.新建數據文件、臨時文件,修改/usr/local/mysql權限
mkdir -p /data/mysql
mkdir /data/mysql/{innodb_data,data,tmp} -p
mkdir /data/mysql/mysql_logs/{binary_log,innodb_log,query_log,slow_query_log,error_log} -p
2.修改權限
chown -R mysql /data/mysql
chgrp -R mysql /data/mysql
3.修改參數
rm -rf /etc/my.cnf
vi /data/mysql/my.cnf
ll /etc/my.cnf
lrwxrwxrwx. 1 root root 23 Nov 18 17:30 /etc/my.cnf -> /data/mysql/my.cnf
chown -R mysql /data/mysql
chgrp -R mysql /data/mysql
5.初始化數據庫
cd /data/mysql/scripts
–datadir=/data/mysql/data
6.啟動MySQL
chown -R mysql /data/mysql
chgrp -R mysql /data/mysql
–6.1建議安全啟動
/data/mysql/bin/mysqld_safe &
/data/mysql/bin/mysqld_safe –datadir=’/data/mysql/data’ &
–6.2添加服務，拷貝服務腳本到init.d目錄，並設置開機啟動
cd /data/mysql/
cp support-files/mysql.server /etc/init.d/mysql
chkconfig mysql on
7.配置mysql用戶
MySQL啟動成功後，root默認沒有密碼，我們需要設置root密碼。
7.1修改/etc/profile文件，在文件末尾添加
PATH=/data/mysql/bin:$PATH
export PATH
現在，我們可以在終端內直接輸入mysql進入，mysql的環境了
執行下面的命令修改root密碼
–7.2修改mysql管理員密碼
1.修改當前用戶密碼
mysql -uroot -p
SET PASSWORD = PASSWORD(‘pass01’);
flush privileges;
2.給所有的root用戶設定密碼：
第一種方式(推薦)
# mysql -uroot -p
MariaDB [(none)]>
MariaDB [(none)]> select host,user,password from mysql.user;
+————-+——+———-+
| host | user | password |
+————-+——+———-+
| localhost | root | |
| db02.zp.com | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
| localhost | | |
| db02.zp.com | | |
+————-+——+———-+
6 rows in set (0.00 sec)
update mysql.user set password = password(‘pass01’) where user = ‘root’ limit 100;flush privileges;
flush privileges;
3.刪除所有匿名用戶(不要刪除root@localhost)
DROP USER ”@’localhost’;delete from mysql.user where user=” limit 10;commit;flush privileges;
delete from mysql.user where host=’db01.mysql.com’;flush privileges;
delete from mysql.user where host=’db02.mysql.com’;flush privileges;
delete from mysql.user where host=’db03.mysql.com’;flush privileges;
–7.3設置root用戶可以遠程訪問
–方法1：授權法
mysql>GRANT ALL PRIVILEGES ON . TO ‘root’@’%’ IDENTIFIED BY ‘pass01’ \
WITH GRANT OPTION;flush privileges;
select host,user,password from mysql.user;
–7.4 登錄mysql
—-7.5設置linux腳本
vi + ~/.bash_profile
alias mysql=”mysql -U -hlocalhost -uroot -ppass01 –auto-rehash”
alias errorlog=”cat /data/mysql/mysql_logs/error_log/error.log”
alias mycnf=”cd /data/mysql”
export PATH=/data/mysql/scripts:$PATH
source ~/.bash_profile
—-7.7修改權限
chown -R mysql /data/mysql
chgrp -R mysql /data/mysql
—-7.8 常見啟動錯誤或警告
cat /data/mysql/mysql_logs/error_log/error.log
Warning] ‘proxies_priv’ entry ‘@% [email protected]’ ignored in –skip-name-resolve mode.
解決辦法:
delete from mysql.proxies_priv where host=’db01.mysql.com’;commit;flush privileges;
delete from mysql.proxies_priv where host=’db02.mysql.com’;commit;flush privileges;
delete from mysql.proxies_priv where host=’db03.mysql.com’;commit;flush privileges;
—–7.9 軟連接mysql的bin目錄
ln -sf /data/mysql/bin/* /usr/bin/
3.galera相關配置
—–3.1 galera安裝(參見galera安裝配置)
—3.2 新建wsrep用戶
GRANT RELOAD, LOCK TABLES, REPLICATION CLIENT ON . TO ‘wsrep’@’%’ IDENTIFIED BY ‘wsrep’ ;flush privileges;
CREATE USER ‘wsrep’@’localhost’ IDENTIFIED BY ‘wsrep’;
GRANT RELOAD, LOCK TABLES, REPLICATION CLIENT ON . TO ‘wsrep’@’localhost’;
FLUSH PRIVILEGES;
—3.2.3 安裝socat
http://www.dest-unreach.org/socat/
http://www.dest-unreach.org/socat/download/
tar xf socat-1.7.3.0.tar.gz
cd socat-1.7.3.0
./configure
make -j4
make install
—3.2.4 修改mysql的配置文件
mkdir /etc/my.cnf.d
cd /soft/mariadb-10.0.20/support-files
cp wsrep.cnf /etc/my.cnf.d/
[mysqld]
wsrep_on=ON
binlog_format=ROW
default-storage-engine=innodb
innodb_autoinc_lock_mode=2
innodb_locks_unsafe_for_binlog=1
innodb_flush_log_at_trx_commit = 2 #可以提高性能，galera保證不丟數據
query_cache_size=0
query_cache_type=0
wsrep_provider=/data/mysql/lib/plugin/libgalera_smm.so #修改
wsrep_cluster_name=”galera_cluster” #修改
wsrep_cluster_address=”gcomm://192.168.50.10,192.168.50.20,192.168.50.30” #修改
wsrep_node_address=192.168.50.10 #修改
wsrep_node_name=db01 #修改
wsrep_slave_threads=4
wsrep_certify_nonPK=1
wsrep_max_ws_rows=131072
wsrep_max_ws_size=1073741824
wsrep_debug=0
wsrep_convert_LOCK_to_trx=0
wsrep_retry_autocommit=1
wsrep_auto_increment_control=1
wsrep_drupal_282555_workaround=0
wsrep_causal_reads=0
wsrep_notify_cmd=
wsrep_sst_method=xtrabackup-v2 #可以修改#rsync,xtrabackup,mysqldump
wsrep_sst_auth=root:pass01 #修改
[mysqld]
wsrep_on=ON
binlog_format=ROW
default-storage-engine=innodb
innodb_autoinc_lock_mode=2
innodb_flush_log_at_trx_commit = 2 #可以提高性能，galera保證不丟數據
query_cache_size=0
query_cache_type=0
wsrep_provider=/data/mysql/lib/plugin/libgalera_smm.so #修改
wsrep_cluster_name=”galera_cluster” #修改
wsrep_cluster_address=”gcomm://192.168.50.10,192.168.50.20,192.168.50.30” #修改
wsrep_node_address=192.168.50.20 #修改
wsrep_node_name=db02 #修改
wsrep_slave_threads=4
wsrep_certify_nonPK=1
wsrep_max_ws_rows=131072
wsrep_max_ws_size=1073741824
wsrep_debug=0
wsrep_convert_LOCK_to_trx=0
wsrep_retry_autocommit=1
wsrep_auto_increment_control=1
wsrep_drupal_282555_workaround=0
wsrep_causal_reads=0
wsrep_notify_cmd=
wsrep_sst_method=xtrabackup-v2 #可以修改#rsync,xtrabackup,mysqldump,xtrabackup-v2
wsrep_sst_auth=root:pass01 #修改
[mysqld]
wsrep_on=ON
binlog_format=ROW
default-storage-engine=innodb
innodb_autoinc_lock_mode=2
innodb_locks_unsafe_for_binlog=1
innodb_flush_log_at_trx_commit = 2 #可以提高性能，galera保證不丟數據
query_cache_size=0
query_cache_type=0
wsrep_provider=/data/mysql/lib/plugin/libgalera_smm.so #修改
wsrep_cluster_name=”galera_cluster” #修改
wsrep_cluster_address=”gcomm://192.168.50.10,192.168.50.20,192.168.50.30” #修改
wsrep_node_address=192.168.50.30 #修改
wsrep_node_name=db03 #修改
wsrep_slave_threads=4
wsrep_certify_nonPK=1
wsrep_max_ws_rows=131072
wsrep_max_ws_size=1073741824
wsrep_debug=0
wsrep_convert_LOCK_to_trx=0
wsrep_retry_autocommit=1
wsrep_auto_increment_control=1
wsrep_drupal_282555_workaround=0
wsrep_causal_reads=0
wsrep_notify_cmd=
wsrep_sst_method=xtrabackup-v2 #可以修改#rsync,xtrabackup,mysqldump,xtrabackup-v2
wsrep_sst_auth=root:pass01 #修改
echo ‘!includedir /etc/my.cnf.d/’ >>/etc/my.cnf
—4.使用rsync、xtrabackup、mydupm
–4.1 使用rsync
yum -y install rsync
–強烈建議將xtrabackup和socat加入path
PATH=/data/mysql/bin:/usr/local/bin/socat:$PATH
export PATH
ln -sf /usr/local/bin/socat /usr/sbin/
—–4.2 使用xtrabackup(推薦)
tar xf Percona-XtraBackup-2.2.11-r7956d1d-el6-x86_64-bundle.tar
yum localinstall -y percona-*
—5.初始化啟動
–方法1:
修改 my.cnf 並設置 wsrep_cluster_address=gcomm:// ，啟動後再來修改配置.
–方法2:(推薦)
使用下面這個命令來啟動 mysql (支持 RedHat 和 CentOS 系統)
第一個節點啟動和其他的兩個節點有些不同
/data/mysql/bin/mysqld_safe –datadir=’/data/mysql/data’ –wsrep-cluster-address=”gcomm://” &
其它節點啟動:
/data/mysql/bin/mysqld_safe –datadir=’/data/mysql/data’ &
–node1查看日志
—-6.各節點啟動相關
tcp 0 0 :::33306 :::* LISTEN 3072/mysqld
NODE1先啟動,其它節點無順序.
—-7.查看群集連接情況
SELECT VARIABLE_VALUE as “cluster size” FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME=”wsrep_cluster_size”;
SHOW STATUS LIKE ‘wsrep_cluster_size’;
SHOW STATUS LIKE ‘wsrep%’;
