update

content/post/mysql-galera.md

@@ -15,79 +15,79 @@ cpu | mem | hostname | public ip | cluster ip | CentOS | MySQL
 双核 | 2GB | mysql_3 | 10.0.0.233 | 10.10.10.3 | 7.5 | 5.7
 
 ## 创建 galera yum 源文件
-    ```bash
-    cat > /etc/yum.repos.d/galera.repo <<-END
-    [galera]
-    name = Galera
-    baseurl = http://releases.galeracluster.com/galera-3/centos/7/x86_64/
-    gpgkey = http://releases.galeracluster.com/GPG-KEY-galeracluster.com
-    gpgcheck = 1
+```bash
+cat > /etc/yum.repos.d/galera.repo <<-END
+[galera]
+name = Galera
+baseurl = http://releases.galeracluster.com/galera-3/centos/7/x86_64/
+gpgkey = http://releases.galeracluster.com/GPG-KEY-galeracluster.com
+gpgcheck = 1
 
-    [mysql-wsrep]
-    name = MySQL-wsrep
-    baseurl = http://releases.galeracluster.com/mysql-wsrep-5.7/centos/7/x86_64/
-    gpgkey = http://releases.galeracluster.com/GPG-KEY-galeracluster.com
-    gpgcheck = 1
-    END
-    ```
+[mysql-wsrep]
+name = MySQL-wsrep
+baseurl = http://releases.galeracluster.com/mysql-wsrep-5.7/centos/7/x86_64/
+gpgkey = http://releases.galeracluster.com/GPG-KEY-galeracluster.com
+gpgcheck = 1
+END
+```
 
 ## 安装
-    ```bash
-    yum install galera-3 mysql-wsrep-5.7 rsync
-    ```
+```bash
+yum install galera-3 mysql-wsrep-5.7 rsync
+```
 
 ## 修改 /etc/my.cnf
-    ```
-    [mysqld]
-    datadir=/var/lib/mysql
-    socket=/var/lib/mysql/mysql.sock
-    user=mysql
-    binlog-format=ROW
-    bind-address=0.0.0.0
-    default-storage-engine=innodb
-    innodb-autoinc-lock-mode=2
-    innodb-flush-log-at-trx-commit=0
-    innodb-buffer-pool-size=1024M #物理内存一半
-    wsrep-provider=/usr/lib64/galera-3/libgalera_smm.so
-    wsrep-provider-options="gcache.dir=/var/lib/gcache;gcache.size=1G;gcache.recover=yes;pc.recovery=TRUE"
-    wsrep-cluster-name="mysql_galera_cluster" #集群名字
-    wsrep-cluster-address="gcomm://10.10.10.1,10.10.10.2,10.10.10.3"
-    wsrep-sst-method=rsync
-    wsrep-node-name=mysql_1 #当前节点名字
-    wsrep-node-address="10.10.10.1" #当前节点 cluster ip
-    #wsrep-auto-increment-control=OFF #只通过一个节点做增删改时使用
+```
+[mysqld]
+datadir=/var/lib/mysql
+socket=/var/lib/mysql/mysql.sock
+user=mysql
+binlog-format=ROW
+bind-address=0.0.0.0
+default-storage-engine=innodb
+innodb-autoinc-lock-mode=2
+innodb-flush-log-at-trx-commit=0
+innodb-buffer-pool-size=1024M #物理内存一半
+wsrep-provider=/usr/lib64/galera-3/libgalera_smm.so
+wsrep-provider-options="gcache.dir=/var/lib/gcache;gcache.size=1G;gcache.recover=yes;pc.recovery=TRUE"
+wsrep-cluster-name="mysql_galera_cluster" #集群名字
+wsrep-cluster-address="gcomm://10.10.10.1,10.10.10.2,10.10.10.3"
+wsrep-sst-method=rsync
+wsrep-node-name=mysql_1 #当前节点名字
+wsrep-node-address="10.10.10.1" #当前节点 cluster ip
+#wsrep-auto-increment-control=OFF #只通过一个节点做增删改时使用
 
-    [mysql_safe]
-    log-error=/var/log/mysqld.log
-    pid-file=/var/run/mysqld/mysqld.pid
+[mysql_safe]
+log-error=/var/log/mysqld.log
+pid-file=/var/run/mysqld/mysqld.pid
 
-    !includedir /etc/my.cnf.d/
-    ```
+!includedir /etc/my.cnf.d/
+```
 
 ## 随机选择一个节点，使用专用脚本 mysqld_bootstrap 初始化集群
-    ```bash
-    /usr/bin/mysqld_bootstrap
-    # 该命令会启动本机的 mysqld 服务
-    systemctl status mysqld
-    ```
+```bash
+/usr/bin/mysqld_bootstrap
+# 该命令会启动本机的 mysqld 服务
+systemctl status mysqld
+```
 
 ## 查找密码，修改初始密码
-    ```bash
-    grep -i password /var/log/messages
-    # 记录输出的密码
-    mysqladmin -uroot -p password 'P@sswo2d'
-    # 根据提示输入上一步输出的密码
-    ```
+```bash
+grep -i password /var/log/messages
+# 记录输出的密码
+mysqladmin -uroot -p password 'P@sswo2d'
+# 根据提示输入上一步输出的密码
+```
 
 ## 在其他节点上启动 mysqld 服务
-    ```bash
-    systemctl start mysqld
-    ```
+```bash
+systemctl start mysqld
+```
 
 ## 查看集群节点数量
-    ```sql
-    show status like 'wsrep_cluster_size';
-    ```
+```sql
+show status like 'wsrep_cluster_size';
+```
 
 ## ssl 加密同步数据(不推荐，存在性能损失)
 - 生成证书