环境：

CentOS 6.5

MySQL_Master

eth0  192.168.1.10

eth1  192.168.2.10

MySQL_Slave

eth0  192.168.1.11

eth1  192.168.2.11

HA    192.168.1.254

------------------------------------------------

——创建RAID1+0组合[存储数据 四块硬盘]

1）创建两块RAID1 [4块硬盘、MySQL主从节点执行]

[root@master ~]# mdadm --create /dev/md0 --level=raid1 --raid-devices=2 /dev/sdb1 /dev/sdc1
mdadm: Note: this array has metadata at the start andmay not be suitable as a boot device.  If you plan tostore '/boot' on this device please ensure thatyour boot-loader understands md/v1.x metadata, or use--metadata=0.90
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.
[root@master ~]# mdadm --create /dev/md1 --level=raid1 --raid-devices=2 /dev/sdb1 /dev/sdc1
mdadm: Note: this array has metadata at the start andmay not be suitable as a boot device.  If you plan tostore '/boot' on this device please ensure thatyour boot-loader understands md/v1.x metadata, or use--metadata=0.90
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md1 started.

2）利用两个 RAID1 创建 RAID0

[root@CentOS ~]# mdadm --create /dev/md2 --level=raid0 --raid-devices=2 /dev/md0 /dev/md1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md2 started.

3）将raid信息写入配置文件

[root@master ~]# mdadm --detail --scan > /etc/mdadm.conf
[root@master ~]# vi /etc/mdadm.conf
ARRAY /dev/md0 metadata=1.2 name=CentOS:0 UUID=b4c4c7b4:0f9f6e60:7eb24578:29682c96
devices /dev/sdb1 /dev/sdc1
ARRAY /dev/md1 metadata=1.2 name=CentOS:1 UUID=f5afcda6:86847677:c752fcdd:fbb91e00
devices /dev/sdd1 /dev/sde1
ARRAY /dev/md2 metadata=1.2 name=CentOS:2 UUID=00f120ec:bab2f3fe:80d88cb9:3ee4b76b
devices /dev/md0 /dev/md1

——安装DRBD

1）解压并安装DRBD

[root@master Linux]# yum -y install gcc kernel-devel kernel-headers flex perl
[root@master Linux]# http://oss.linbit.com/drbd/8.4/drbd-8.4.4.tar.gz
[root@master Linux]# tar fzvx drbd-8.4.4.tar.gz
[root@master Linux]# cd drbd-8.4.4
[root@master drbd-8.4.4]# ./configure --prefix=/usr/local/drbd-8.4 --with-km
[root@master drbd-8.4.4]# make KDIR=/usr/src/kernels/2.6.32-358.el6.x86_64/
[root@master drbd-8.4.4]# make install
[root@master drbd-8.4.4# mkdir -p /usr/local/drbd-8.4/var/run/drbd
[root@master drbd-8.4.4]# cp /usr/local/drbd-8.4/etc/rc.d/init.d/drbd /etc/init.d/
[root@master drbd-8.4.4]# chkconfig --add drbd
[root@master drbd-8.4.4]# chkconfig drbd on

2）安装drbd模块

[root@master drbd-8.4.4]# cd drbd
[root@master drbd]# make clean
[root@master drbd]# make KDIR=/usr/src/kernels/2.6.32-358.el6.x86_64/
[root@master drbd]# cp drbd.ko /lib/modules/2.6.32-358.el6.x86_64/kernel/lib/
[root@master drbd]# depmod

3）配置global_common.conf

[root@master drbd]# cd /usr/local/drbd-8.4/etc/drbd.d/
[root@master drbd.d]# cp global_common.conf global_common.conf.bak
[root@master drbd.d]# vi global_common.conf
global {usage-count no;
}
common {handlers {pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";pri-lost-after-sb "/usr/lib/drbd/notify-pri-lost-after-sb.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";fence-peer "/usr/lib/drbd/crm-fence-peer.sh";split-brain "/usr/lib/drbd/notify-split-brain.sh root";out-of-sync "/usr/lib/drbd/notify-out-of-sync.sh root";}startup {wfc-timeout 30;degr-wfc-timeout 30;outdated-wfc-timeout 30;}disk {#磁盘读写速度与同步速率的30%resync-rate     30M;on-io-error     detach;fencing         resource-only;}net {protocol C;cram-hmac-alg   sha1;shared-secret   "mysql-ha";csums-alg       sha1;verify-alg crc32c;}
}

4）创建r0资源

[root@master drbd.d]# vi r0.res
resource r0{on master{device          /dev/drbd0; #逻辑设备的路径disk            /dev/md2;   #物理设备address         192.168.2.10:7788;meta-disk       internal;}on slave{device          /dev/drbd0;disk            /dev/md2;address         192.168.2.11:7788;meta-disk       internal;}
}

5）建立 drbd resource

[root@master drbd.d]# modprobe drbd
[root@master drbd.d]# drbdadm create-md r0
[root@master drbd.d]# drbdadm up r0

6）设置Primary [在master节点操作]

[root@master drbd.d]# drbdadm primary --force r0

7）创建DRBD文件系统 [在Mysql主节点的master上执行]

[root@master drbd.d]# mkfs.ext4 /dev/drbd0
[root@master drbd.d]# mount /dev/drbd0 /raid10/

8）DRBD同步测试

1、首先，在主服务器上先将设备卸载，同时将主服务器降为备用服务器：

[root@master drbd]# mkdir -p /raid10/mysql/data
[root@master drbd]# cd /
[root@master /]# umount /dev/drbd0
[root@master /]# drbdadm secondary r0

2、然后，登录备用服务器，将备用服务器升为主服务器，同时挂载drbd0设备到 /raid10目录：

[root@slave drbd]# drbdadm up r0
[root@slave drbd]# drbdadm primary r0
[root@slave drbd]# mount /dev/drbd0 /raid10/
[root@slave drbd]# cd /raid10/
[root@slave raid10]# ls
lost+found  mysql

——使用中出现脑裂以及解决办法

[root@slave ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@slave, 2013-12-03 09:50:30 0: cs:StandAlone ro:Primary/Unknown ds:UpToDate/Outdated   r-----
ns:0 nr:0 dw:2 dr:1684 al:1 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:4

2）查看日志

[root@slave /]# tail -f /var/log/messages
Dec  3 11:06:05 slave kernel: block drbd0: helper command: /sbin/drbdadm split-brain minor-0 exit code
127 (0x7f00)
Dec  3 11:06:05 slave kernel: drbd r0: conn( WFReportParams -> Disconnecting )
Dec  3 11:06:05 slave kernel: drbd r0: error receiving ReportState, e: -5 l: 0!
Dec  3 11:06:05 slave kernel: drbd r0: asender terminated
Dec  3 11:06:05 slave kernel: drbd r0: Terminating drbd_a_r0
Dec  3 11:06:05 slave kernel: drbd r0: Connection closed
Dec  3 11:06:05 slave kernel: drbd r0: conn( Disconnecting -> StandAlone )
Dec  3 11:06:05 slave kernel: drbd r0: receiver terminated
Dec  3 11:06:05 slave kernel: drbd r0: Terminating drbd_r_r0
Dec  3 11:06:41 slave kernel: block drbd0: role( Secondary -> Primary )

——解决方法：

1）我们需要将现在的master角色修改为secondary

[root@master ~]# drbdadm secondary r0
#该命令告诉slave，secondary上的数据不正确，以primary上的数据为准。
[root@master ~]# drbdadm -- --discard-my-data connect r0

2）我们还需要在slave上执行下面操作

#这样master就能和slave开始连接上了，并且保证数据不会丢失：
[root@slave ~]# drbdadm connect r0
[root@slave ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@slave, 2013-12-03 09:50:300: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r-----ns:0 nr:4 dw:6 dr:1688 al:1 bm:1 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
[root@master ~]# cat /proc/drbd
version: 8.4.4 (api:1/proto:86-101)
GIT-hash: 599f286440bd633d15d5ff985204aff4bccffadd build by root@master, 2013-12-03 09:49:220: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----ns:4 nr:0 dw:1 dr:1015 al:1 bm:1 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0

——安装mysql

1）mastr节点

[root@master Linux]# yum install gcc gcc-c++ autoconf automake ncurses-devel libtool-ltdl-devel* -y
[root@master Linux]# useradd -M -s /sbin/nologin mysql
[root@master Linux]# tar zfvx cmake-2.8.12.tar.gz
[root@master Linux]# cd cmake-2.8.12
[root@master cmake-2.8.12]# ./configure
[root@master cmake-2.8.12]# gmake && make install
[root@master cmake-2.8.12]# cd ..
[root@master Linux]# tar zfxv mysql-5.5.25.tar.gz
[root@master Linux]# cd mysql-5.5.25
[root@master mysql-5.5.25]# cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql-5.5
[root@master mysql-5.5.25]# make && make install
[root@master mysql-5.5.25]# cp support-files/my-medium.cnf  /raid10/mysql/my.cf
[root@master mysql-5.5.25]# rm -rf /etc/my.cnf
[root@master mysql-5.5.25]# ln -sv  /raid10/mysql/my.cf /etc/
[root@master mysql-5.5.25]# cd /usr/local/mysql-5.5/
[root@master mysql-5.5]# chown -R root:mysql .
[root@master mysql-5.5]# chown -R mysql:mysql /raid10/mysql/data/
[root@master mysql-5.5]# ./scripts/mysql_install_db --user=mysql \
--basedir=/usr/local/mysql-5.5/ \
--datadir=/raid10/mysql/data/
[root@master mysql-5.5]# cp support-files/mysql.server /etc/init.d/mysqld
[root@master mysql-5.5]# chmod +x /etc/init.d/mysqld
[root@master mysql-5.5]# chkconfig --add mysqld
[root@master mysql-5.5]# vi /etc/init.d/mysqld
datadir=/raid10/mysql/data

2）savle节点安装

——安装mysql[MySQL主节点的savle节点安装]
[root@slave Linux]# yum install gcc gcc-c++ autoconf automake ncurses-devel libtool-ltdl-devel* -y
[root@slaveLinux]# useradd -M -s /sbin/nologin mysql
[root@slave Linux]# tar zfvx cmake-2.8.12.tar.gz
[root@slave Linux]# cd cmake-2.8.12
[root@slavecmake-2.8.12]# ./configure
[root@slavecmake-2.8.12]# gmake && make install
[root@slavecmake-2.8.12]# cd ..
[root@slave Linux]# tar zfxv mysql-5.5.25.tar.gz
[root@slave Linux]# cd mysql-5.5.25
[root@slave mysql-5.5.25]# cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql-5.5
[root@slave mysql-5.5.25]# make && make install
[root@slave mysql-5.5.25]# cd /usr/local/mysql-5.5/
[root@slave mysql-5.5]# chown -R root:mysql .
[root@slave mysql-5.5]# cp support-files/mysql.server /etc/init.d/mysqld
[root@slave mysql-5.5]# vi /etc/init.d/mysqld
datadir=/raid10/mysql/data

——MySQL主节点实现高可用

注意：以下操作在MySQL主节点的master、slave节点执行

1）添加hosts主机信息

[root@master Linux]# vi /etc/hosts
192.168.2.10    master
192.168.2.11    slave

2）添加用户和组

[root@master Linux]# groupadd haclient
[root@master Linux]# useradd -g haclient -M -s /sbin/nologin hacluster

3）安装heartbeat

1.安装相关软件依赖包

[root@master Linux]# yum install libtool automake autoconf \
glib2-devel \
libxml2-devel \
bzip2-devel \
libtool-ltdl-devel \
libxslt-devel \
docbook* -y

2.安装glue

[root@master Linux]# wget http://hg.linux-ha.org/glue/archive/glue-1.0.9.tar.bz2
[root@master Linux]# tar jfvx glue-1.0.9.tar.bz2
[root@master Linux]# cd Reusable-Cluster-Components-glue--glue-1.0.9/
[root@master Reusable-Cluster-Components-glue--glue-1.0.9]# ./autogen.sh
[root@master Reusable-Cluster-Components-glue--glue-1.0.9]# ./configure LIBS='/lib64/libuuid.so.1'
[root@CentOS Reusable-Cluster-Components-glue--glue-1.0.9]# make && make install

3.安装agents

[root@master Heartbeat-3-0-7e3a82377fa8]# cd ..
[root@master Linux]# wget https://codeload.github.com/ClusterLabs/resource-agents/legacy.tar.gz/v3.9.2
[root@master Linux]# tar zfvx ClusterLabs-resource-agents-v3.9.2-0-ge261943.tar.gz
[root@master Linux]# cd ClusterLabs-resource-agents-b735277/
[root@master ClusterLabs-resource-agents-b735277]# ./autogen.sh
[root@master ClusterLabs-resource-agents-b735277]# ./configure LIBS='/lib64/libuuid.so.1'
[root@master ClusterLabs-resource-agents-b735277]# make && make install

4.安装heartbeat

[root@master ClusterLabs-resource-agents-b735277]# cd ..
[root@master Linux]# wget http://hg.linux-ha.org/heartbeat-STABLE_3_0/archive/7e3a82377fa8.tar.bz2
[root@master Linux]# tar jfvx heartbeat-3.0.5.tar.bz2
[root@master Linux]# cd Heartbeat-3-0-7e3a82377fa8/
[root@master Heartbeat-3-0-7e3a82377fa8]# ./bootstrap
[root@master Heartbeat-3-0-7e3a82377fa8]# ./ConfigureMe configure LIBS='/lib64/libuuid.so.1'
[root@master Heartbeat-3-0-7e3a82377fa8]# make && make install

4）配置heartbeat

[root@master Heartbeat-3-0-7e3a82377fa8]# cd doc
[root@master doc]# cp authkeys haresources ha.cf /etc/ha.d/
[root@master doc]# cp /usr/etc/ha.d/shellfuncs /etc/ha.d/
[root@master doc]# rm -rf /usr/etc/ha.d
[root@master doc]# ln -sv /etc/ha.d /usr/etc
[root@master doc]# vi /etc/ha.d/ha.cf
#开启日志
logfile /var/log/ha-log
#设置syslog()/logger设备
logfacility     local0
#心跳发送时间间隔/秒
keepalive 2
#15秒没有收到主机心跳、确认主机故障
deadtime 15
#警告次数
warntime 5
#守护进程启动30后 启动服务资源
initdead 30
#监听端口
udpport 694
#另一个节点IP、通过检测来保证心跳的可用性
ucast eth0 192.168.1.11
ucast eth1 192.168.2.11
#两个节点的名字 [uname -n 获取]
node    master
node    slave
#开启DPOD
respawn hacluster /usr/lib64/heartbeat/ipfail
respawn hacluster /usr/lib64/heartbeat/dopd
apiauth ipfail gid=haclient uid=hacluster
apiauth dopd gid=haclient uid=hacluster
[root@master doc]# vi /etc/ha.d/authkeys
auth 1
1 sha1 HI!
[root@master doc]# chmod 600 /etc/ha.d/authkeys
[root@master doc]# vi /etc/ha.d/haresources
master drbddisk::r0 Filesystem::/dev/drbd0::/raid10::ext4 mysqld IPaddr::192.168.1.254/24/eth0
[root@master doc]# cd /Linux/drbd-8.4.4/scripts/
[root@master scripts]# cp drbddisk /etc/ha.d/resource.d/
[root@master scripts]# cp /etc/init.d/mysqld /etc/ha.d/resource.d/
[root@master scripts]# chkconfig --add heartbeat
[root@master scripts]# chkconfig heartbeat on

——测试

1）启动master节点启动heartbeat

[root@master scripts]# /etc/init.d/heartbeat start

2）启动slave节点启动heartbeat

[root@slave scripts]# /etc/init.d/heartbeat start

3）在master节点上查看启动日志

[root@master ha.d]# tail -f /var/log/ha-log
Apr 26 21:11:48 master heartbeat: [42033]: info: Starting child client "/usr/lib64/heartbeat/ipfail" (501,501)
Apr 26 21:11:48 master heartbeat: [42033]: info: Starting child client "/usr/lib64/heartbeat/dopd" (501,501)
Apr 26 21:11:48 mster heartbeat: [42062]: info: Starting "/usr/lib64/heartbeat/ipfail" as uid 501  gid 501 (pid 42062)
Apr 26 21:11:48 mster heartbeat: [42064]: info: Starting "/usr/lib64/heartbeat/dopd" as uid 501  gid 501 (pid 42064)
Apr 26 21:11:48 mster heartbeat: [42061]: info: Local Resource acquisition completed.
Apr 26 21:11:48 mster heartbeat: [42033]: info: Initial resource acquisition complete (req_our_resources)
Apr 26 21:11:48 mster ipfail: [42062]: ERROR: auto_failback set to incompatible legacy option.
Apr 26 21:11:48 mster heartbeat: [42033]: WARN: Managed /usr/lib64/heartbeat/ipfail process 42062 exited with return code 100.
Apr 26 21:11:48 mster heartbeat: [42033]: info: Status update for slave: status active
harc[42104]:    2014/04/26_21:11:48 info: Running /usr/etc/ha.d//rc.d/status status
#说明启动成功

4）切换主备

1.在master节点停掉heartbeat

[root@master scripts]# /etc/init.d/heartbeat stop

2.查看slave日志是否能自动切换至slave节点

[root@slave scripts]# tail -f /var/log/ha-log
#显示master节点已经shutdown
Apr 26 21:21:27 slave heartbeat: [42054]: info: Received shutdown notice from 'master'.
Apr 26 21:21:27 slave heartbeat: [42054]: info: Resources being acquired from master.
harc[42118]:    2014/04/26_21:21:27 info: Running /usr/etc/ha.d//rc.d/status status
Apr 26 21:21:27 slave heartbeat: [42119]: info: No local resources [/usr/share/heartbeat/ResourceManager listkeys slave] to acquire.
mach_down[42148]:       2014/04/26_21:21:27 info: Taking over resource group drbddisk::r0
ResourceManager[42175]: 2014/04/26_21:21:27 info: Acquiring resource group: master drbddisk::r0 Filesystem::/dev/drbd0::/raid10::ext4 mysqld IPaddr::192.168.1.254/24/eth0
ResourceManager[42175]: 2014/04/26_21:21:27 info: Running /etc/ha.d/resource.d/drbddisk r0 start
Filesystem[42239]:      2014/04/26_21:21:27 INFO:  Resource is stopped
ResourceManager[42175]: 2014/04/26_21:21:27 info: Running /etc/ha.d/resource.d/Filesystem /dev/drbd0 /raid10 ext4 start
Filesystem[42320]:      2014/04/26_21:21:27 INFO: Running start for /dev/drbd0 on /raid10
Filesystem[42312]:      2014/04/26_21:21:28 INFO:  Success
ResourceManager[42175]: 2014/04/26_21:21:28 info: Running /etc/ha.d/resource.d/mysqld  start
Apr 26 21:21:39 slave heartbeat: [42054]: WARN: node master: is dead
Apr 26 21:21:39 slave heartbeat: [42054]: info: Dead node master gave up resources.
Apr 26 21:21:39 slave heartbeat: [42054]: info: Resources being acquired from master.
Apr 26 21:21:39 slave heartbeat: [42054]: info: Link master:eth0 dead.
Apr 26 21:21:39 slave heartbeat: [42054]: info: Link master:eth1 dead.
Apr 26 21:21:41 slave heartbeat: [42614]: info: No local resources [/usr/share/heartbeat/ResourceManager listkeys slave] to acquire.
Apr 26 21:21:41 slave heartbeat: [42054]: info: Initial resource acquisition complete (req_our_resources)
IPaddr[42642]:  2014/04/26_21:21:42 INFO:  Resource is stopped
#显示slave节点的VIP已经运行
ResourceManager[42175]: 2014/04/26_21:21:42 info: Running /etc/ha.d/resource.d/IPaddr 192.168.1.254/24/eth0 start
IPaddr[42727]:  2014/04/26_21:21:42 INFO: Using calculated netmask for 192.168.1.254: 255.255.255.0
IPaddr[42727]:  2014/04/26_21:21:42 INFO: eval ifconfig eth0:0 192.168.1.254 netmask 255.255.255.0 broadcast 192.168.1.255
IPaddr[42701]:  2014/04/26_21:21:42 INFO:  Success
mach_down[42148]:       2014/04/26_21:21:42 info: mach_down takeover complete for node master.
harc[42820]:    2014/04/26_21:21:42 info: Running /usr/etc/ha.d//rc.d/status status
mach_down[42837]:       2014/04/26_21:21:42 info: Taking over resource group drbddisk::r0
ResourceManager[42864]: 2014/04/26_21:21:43 info: Acquiring resource group: master drbddisk::r0 Filesystem::/dev/drbd0::/raid10::ext4 mysqld IPaddr::192.168.1.254/24/eth0
#显示slave的mysql和drbd服务已经启动成功
Filesystem[42906]:      2014/04/26_21:21:43 INFO:  Running OK
IPaddr[42987]:  2014/04/26_21:21:43 INFO:  Running OK
mach_down[42837]:       2014/04/26_21:21:43 info: mach_down takeover complete for node master.

转载于:https://blog.51cto.com/hypocritical/1350251

Mysql-5.5+Heartbeat-3.0.5+DRBD相关推荐

  1. vc6.0 点击鼠标获取mysql数据库所在行_VC6.0连接到mysql数据库

    (1)打开VC6.0 工具栏Tools菜单下的Options选项,在Directories的标签页中右边的"Show directories for:"下拉列表中选中"I ...

  2. MySQL 高可用架构 之 MHA (Centos 7.5 MySQL 5.7.18 MHA 0.58)

    目录 简介 环境准备 秘钥互信 安装基础依赖包 安装MHA组件 安装 MHA Node组件 安装 MHA Manager 组件 建立 MySQL 一主三从 初始化 MySQL 启动MySQL 并简单配 ...

  3. mysql unlix下载_系统（PHP的MySQL的版本：showmov3.0）平台：Win和Linux / unlix其他发

    系统(PHP的MySQL的版本:showmov3.0)平台:Win和Linux / unlix其他发 2016-08-22 0 0 0 暂无评分 其他 1 积分下载 如何获取积分? 系统版本:show ...

  4. mysql root远程访问权限_mysql8.0 Server在Windows平台中的安装、初始化和远程访问设置...

    mysql8.0 server安装 1.下载mysql 8.0 可以到mysql官网下载 https://dev.mysql.com/downloads/mysql 或者如下地址 mysql-8.0. ...

  5. mysql 5.7和8.0区别_前沿观察 | MySQL性能基准测试对比：5.7 VS 8.0

    点小蓝字加关注! 版权声明:本文由腾讯云数据库产品团队整理,页面原始内容来自于severalnines英文官网,若转载请注明出处.翻译目的在于传递更多全球最新数据库领域相关信息,并不意味着腾讯云数据库 ...

  6. mysql解压缩 1067_windows安装mysql8.0.0解压版附出现1067错误解决方法

    1.自己到mysql官网下载mysql-8.0.0-dmr-winx64.zip解压缩安装包 2.下载页面地址:https://dev.mysql.com/downloads/mysql/ 3.解压缩 ...

  7. vs mysql iss_MySQL5.7与8.0的连接问题（vs2015\2017）

    1. MySQL8.0 root密码忘记重置与5.7不同,绝大多数经验帖不适用8.0 https://dev.mysql.com/doc/refman/8.0/en/resetting-permiss ...

  8. mysql8安装目录linux7.5_Linux系统下 MySQL 5.7和8.0 版本安装指南

    一. 准备工作 1 删除本地CentOS7中的mariadb: 查看系统中是否已安装 mariadb 服务: rpm -qa | grep mariadb 或 yum list installed | ...

  9. zabbix设置mysql登陆免报警_zabbix3.0.2 监控mysql服务down的时候不触发报警的问题修复...

    1,mysql down了,zabbix没有报警 去查看后台mysql进程,确实没有mysql进程在运行着: [root@db_m2_slave2 ~]# ps -eaf|grep mysql roo ...

  10. MySQL DBA必备：MySQL 5.7升级8.0过程（全）

    墨墨导读:每个 DBA 在工作中都会面临数据库升级的问题,本文详细介绍MySQL 从 5.7 升级到 8.0 的过程,希望可以帮助到大家. 为什么升级到MySQL 8.0 基于安全考虑 基于性能和 稳 ...

最新文章

  1. Django项目配合sentry实现浅析
  2. 【异常】org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=36, exceptions:
  3. uniCloud云函数——微信小程序登录凭证校验[code2Session](即：使用 code 换取 openid 和 session_key 等信息)解决方案
  4. boost::statechart模块实现类型信息测试
  5. requests模块(代理)篇
  6. 网友直呼太贵！华为nova 8系列发布：麒麟985+66W快充
  7. 活动目录（Active Directory）域故障解决实例(转载）
  8. PHP代码更新后画面不更新,为什么我的PHP代码不能更新SQL
  9. SQL server中表数据自动生成拼音码
  10. matlab 色温图,LED色温图谱详解
  11. Python实现简单自动升级exe程序版本并自动运行
  12. 混淆 php,开发简单的PHP混淆器与解混淆器
  13. 笔记本电脑摄像头频闪问题，打开摄像头出现错误代码0xA00F4244（0xC00D36D5）的问题解决方法
  14. 小刘同学的sansen-virtuosoIC618电路仿真记录
  15. K线形态识别—K线反转形态之头部反转形态
  16. Stm32学习（基于HAL库）
  17. 计算机流程图知识点,高中数学流程图知识点
  18. 从零开始学习Java设计模式 | 创建型模式篇：建造者模式
  19. 浅谈数字媒体艺术中的技术应用-3-工具介绍（二）
  20. 解决Linux无法创建新用户和/home目录下无法创建新目录的问题，或者无权限创建用户目录问题mkdir: cannot create directory ‘ ’: Permissi

热门文章

  1. python编写图像识别_python实现识别相似图片小结
  2. tar -zxvf命令_Linux压缩命令小记
  3. 机械制图中外螺纹的画法_机械制图基础常识42条，条条都是经典！
  4. android切换线程的方法,android 主线程切换方法
  5. 图解TCPIP-MAC地址(数据链路层)
  6. javasript ide
  7. flask-sqlalchemy 数据基本操作
  8. oracle 连接数_Oracle多租户数据库资源管理，就这么简单
  9. java进销存系统源码_青云源码——最新企业进销存管理系统源码分享
  10. vue怎么注释html代码,vue如何注释