使用rancher管理k3s创建MySQL数据库及持久化数据及主从搭建

【说明】

前面使用yml文件创建MySQL数据库及持久化数据，创建配置文件相对比较繁琐一些，这里使用rancher直接创建MySQL数据库并持久化数据；

【当前k3s信息】

【安装nfs】

安装涉及NFS的依赖包，主节点安装
yum -y install nfs-utils rpcbind

分配权限
mkdir -p /nfsdata
chmod 755 -R /nfsdata

配置挂载
cat >> /etc/exports <<EOF
/nfsdata 192.168.205.0/24(rw,no_root_squash)
EOF

#启动rpc跟nfs
systemctl start rpcbind.service
systemctl status rpcbind.service

systemctl start nfs.service
systemctl status nfs.service

systemctl enable rpcbind.service
systemctl enable nfs.service

master节点查看信息：
exportfs -arv
showmount -e

work节点查看信息

yum -y install nfs-utils rpcbind

#启动rpc跟nfs
systemctl start rpcbind.service
systemctl status rpcbind.service

systemctl start nfs.service
systemctl status nfs.service

systemctl enable rpcbind.service
systemctl enable nfs.service

创建挂载的目录
mkdir -p /nfsdata

编辑开机启动/etc/fstab
192.168.205.152:/nfsdata /nfsdata nfs defaults 0 0

mount -a
df -h

【使用rancher创建pv】

正常状态

【使用rancher创建PVC】

正常状态

【部署服务】

nfs目录下面创建目录
mkdir -p /nfsdata/mysqlmaster/data 数据目录
mkdir -p /nfsdata/mysqlmaster/conf 配置文件目录

添加配置文件
cd /nfsdata/mysqlmaster/conf
cat >my.cnf
# Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

#
# The MySQL Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

[mysqld]
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
datadir = /var/lib/mysql
secure-file-priv= NULL
server_id = 252

# Custom config should go here
!includedir /etc/mysql/conf.d/

rancher添加服务