CentOS 6.4 Heartbeat+mysql+nfs实现高可用的mysql集群
一、Heartbeat网络架构
CentOS 6.4 X86-64 最小化安装 由于用源码编译安装heartbeat一直没有通过,所以没办法只能采用yum安装。 heartbeat v3这里需要强调的就是博文中: # 表示是在node1、node2上都要执行的命令 而 [root@node1 ~]# 表示仅在node1节点上执行的命令 [root@node2 ~]# 表示仅在node2节点上执行的命令 [root@node3 ~]# 表示仅在node3节点上执行的命令新遇到的问题,本来这边博文准备把Heartbeat的资源管理器由haresources换成crm,但是在配置crm的时候,总是不成功,如果朋友有crm成功的案例,希望能指导指导。谢谢
node1 192.168.1.196 255.255.255.0 192.168.0.1 node1.test.com eth1 Active node2 192.168.1.197 255.255.255.0 192.168.0.1 node2.test.com eth1 Passive node3 192.168.1.198 255.255.255.0 192.168.0.1 node3.test.com eth1 nfs vip 192.168.1.223 255.255.255.0
[root@node1 ~]# uname -n node1.test.com [root@node1 ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.196 node1.test.com node1 192.168.1.197 node2.test.com node2 192.168.1.198 node3.test.com node3
[root@node2 ~]# uname -n node2.test.com [root@node2 ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.196 node1.test.com node1 192.168.1.197 node2.test.com node2 192.168.1.198 node3.test.com node3
[root@node1 ~]# ssh-keygen -t rsa -f ~/.ssh/id_rsa -P '' Generating public/private rsa key pair. Created directory '/root/.ssh'. Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: ce:f3:d7:63:10:9b:d2:86:f8:8a:5a:ee:41:d8:d2:01 root@node1.test.com The key's randomart p_w_picpath is: +--[ RSA 2048]----+ | E | | . | | . | | + . . | | o + S. o + | | o o. o * | | o +. o o | | o o o. . + | | .o+ .... . . | +-----------------+ [root@node1 ~]# ssh-copy-id -i .ssh/id_rsa.pub root@node2.test.com The authenticity of host 'node2.test.com (192.168.0.102)' can't be established. RSA key fingerprint is 46:b9:7c:11:db:75:93:ad:f1:26:f0:a7:4d:00:40:20. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'node2.test.com,192.168.0.102' (RSA) to the list of known hosts. root@node2.test.com's password: Now try logging into the machine, with "ssh 'root@node2.test.com'", and check in:.ssh/authorized_keysto make sure we haven't added extra keys that you weren't expecting.
[root@node2 ~]# ssh-keygen -t rsa -f ~/.ssh/id_rsa -P '' Generating public/private rsa key pair. Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: c4:e3:71:f8:82:09:f0:42:9c:e7:20:db:db:ce:dc:0b root@node2.test.com The key's randomart p_w_picpath is: +--[ RSA 2048]----+ | .o. | |..+o. . . | | +.+o * . | |. .... = = | | o o S . | | . . . | | +E. | | +.. | | .. | +-----------------+ [root@node2 ~]# ssh-copy-id -i .ssh/id_rsa.pub root@node1.test.com The authenticity of host 'node1.test.com (192.168.0.101)' can't be established. RSA key fingerprint is 46:b9:7c:11:db:75:93:ad:f1:26:f0:a7:4d:00:40:20. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'node1.test.com,192.168.0.101' (RSA) to the list of known hosts. root@node1.test.com's password: Now try logging into the machine, with "ssh 'root@node1.test.com'", and check in:.ssh/authorized_keysto make sure we haven't added extra keys that you weren't expecting.
# yum -y install ntpdate # ntpdate asia.pool.ntp.org
# getenforce Disabled # /etc/init.d/iptables status iptables:未运行防火墙。
# wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm # wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm # rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm
# sed -i 's/#baseurl/baseurl/g' /etc/yum.repos.d/epel.repo # sed -i 's/mirrorlist/#mirrorlist/' /etc/yum.repos.d/epel.repo
# yum install heartbeat heartbeat-libs
heartbeat3个配置文件authkeys #节点之间认证的秘钥key文件,权限为600ha.cf #heartbeat服务核心配置文件haresources #集群资源管理器(haresource | crm)
[root@node1 ~]# cp /usr/share/doc/heartbeat-3.0.4/{ha.cf,authkeys,haresources} /etc/ha.d/
[root@node1 ~]# dd if=/dev/random bs=512 count=1 | openssl md5 #生成密钥随机数 记录了0+1 的读入 记录了0+1 的写出 72字节(72 B)已复制,4.8467e-05 秒,1.5 MB/秒 (stdin)= acf7401e6b20d4cec482ba1160eb8efe [root@node1 ~]# vim /etc/ha.d/authkeys #注释:末尾添加以下两行 auth 1 1 md5 acf7401e6b20d4cec482ba1160eb8efe [root@node1 ~]# chmod 600 /etc/ha.d/authkeys
[root@node1 ha.d]# grep -v '^#' ha.cf |sed '/^$/d' 注释:主要修改两处,其它的都可以默认 logfacility local0 mcast eth1 225.100.100.100 694 1 0 #修改心跳信息的传播方式|组播 auto_failback on node node1.test.com #配置集群中的节点数 node node2.test.com #配置集群中的节点数
[root@node1 ha.d]# grep -v '^#' /etc/ha.d/haresources node1.test.com IPaddr::192.168.1.223 Filesystem::192.168.1.198:/mydata::/mydata::nfs mysqld
[root@node1 ~]# scp /etc/ha.d/{ha.cf,haresources,authkeys} root@node2.test.com:/etc/ha.d/
[root@node3 ~]# fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0xc42dce64. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable.Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)WARNING: DOS-compatible mode is deprecated. It's strongly recommended toswitch off the mode (command 'c') and change display units tosectors (command 'u').Command (m for help): n Command actione extendedp primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-1305, default 1): 1 Last cylinder, +cylinders or +size{K,M,G} (1-1305, default 1305): Using default value 1305Command (m for help): pDisk /dev/sdb: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc42dce64Device Boot Start End Blocks Id System /dev/sdb1 1 1305 10482381 83 LinuxCommand (m for help): t Selected partition 1 Hex code (type L to list codes): 8e Changed system type of partition 1 to 8e (Linux LVM)Command (m for help): pDisk /dev/sdb: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc42dce64Device Boot Start End Blocks Id System /dev/sdb1 1 1305 10482381 8e Linux LVMCommand (m for help): w The partition table has been altered!Calling ioctl() to re-read partition table. Syncing disks.
[root@node3 ~]# yum -y install lvm2 [root@node3 ~]# pvcreate /dev/sdb1Physical volume "/dev/sdb1" successfully created [root@node3 ~]# vgcreate myvg /dev/sdb1Volume group "myvg" successfully created [root@node3 ~]# lvcreate -L 9G -n mydata myvgLogical volume "mydata" created [root@node3 ~]# lvs |grep mydatamydata myvg -wi-a----- 9.00g
[root@node3 ~]# mkfs.ext4 /dev/myvg/mydata mke2fs 1.41.12 (17-May-2010) 文件系统标签= 操作系统:Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 589824 inodes, 2359296 blocks 117964 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=2415919104 72 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632正在写入inode表: 完成 Creating journal (32768 blocks): 完成 Writing superblocks and filesystem accounting information: 完成This filesystem will be automatically checked every 23 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@node3 ~]# yum -y install nfs-utils rpcbind
[root@node3 ~]# mkdir /mydata [root@node3 ~]# echo "/mydata 192.168.1.0/24(rw,all_squash,anonuid=3306,anongid=3306)" > /etc/exports
[root@node3 ~]# showmount -e 192.168.1.198 clnt_create: RPC: Port mapper failure - Unable to receive: errno 111 (Connection refused) [root@node3 ~]# service nfs start 启动 NFS 服务: [确定] 启动 NFS mountd: [失败] 启动 NFS 守护进程:rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused) rpc.nfsd: unable to set any sockets for nfsd[失败] [root@node3 ~]# service rpcbind start 正在启动 rpcbind: [确定] [root@node3 ~]# service nfs start 启动 NFS 服务: [确定] 启动 NFS mountd: [确定] 启动 NFS 守护进程: [确定] 正在启动 RPC idmapd: [确定] [root@node3 ~]# showmount -e 192.168.1.198 Export list for 192.168.1.198: /mydata 192.168.1.0/24
[root@node3 ~]# mount /dev/myvg/mydata /mydata/ [root@node3 ~]# ll /mydata/ 总用量 16 drwx------ 2 root root 16384 12月 31 09:02 lost+found
如果以上都没有问题的话,接下来我们就为安装配置mysql做准备!!!
[root@node3 ~]# useradd -g mysql -u 3306 -s /sbin/nologin -M mysql [root@node3 ~]# id mysql uid=3306(mysql) gid=3306(mysql) 组=3306(mysql)
[root@node3 ~]# chown -R mysql.mysql /mydata/ [root@node3 ~]# ll -d /mydata/ drwxr-xr-x 3 mysql mysql 4096 12月 31 09:02 /mydata/
到了这里NFS的配置基本就差不多了。接下来我们在node1节点上安装配置mysql服务
1、创建用户 [root@node1 ~]# groupadd -g 3306 mysql [root@node1 ~]# useradd -g mysql -u 3306 -s /sbin/nologin -M mysql [root@node1 ~]# id mysql uid=3306(mysql) gid=3306(mysql) 组=3306(mysql)2、解压MySQL安装包 [root@node1 ~]# tar xf mysql-5.6.12-linux-glibc2.5-x86_64.tar.gz -C /usr/local/ [root@node1 ~]# ln -sv /usr/local/mysql-5.6.12-linux-glibc2.5-x86_64 /usr/local/mysql "/usr/local/mysql" -> "/usr/local/mysql-5.6.12-linux-glibc2.5-x86_64"3、赋予MySQL安装包权限 [root@node1 ~]# chown -R root.mysql /usr/local/mysql/ [root@node1 ~]# ll /usr/local/mysql/ 总用量 76 drwxr-xr-x 2 root mysql 4096 12月 31 09:15 bin -rw-r--r-- 1 root mysql 17987 6月 20 2013 COPYING drwxr-xr-x 3 root mysql 4096 12月 31 09:16 data drwxr-xr-x 2 root mysql 4096 12月 31 09:16 docs drwxr-xr-x 3 root mysql 4096 12月 31 09:16 include -rw-r--r-- 1 root mysql 7469 6月 20 2013 INSTALL-BINARY drwxr-xr-x 3 root mysql 4096 12月 31 09:16 lib drwxr-xr-x 4 root mysql 4096 12月 31 09:15 man drwxr-xr-x 10 root mysql 4096 12月 31 09:16 mysql-test -rw-r--r-- 1 root mysql 2496 6月 20 2013 README drwxr-xr-x 2 root mysql 4096 12月 31 09:16 scripts drwxr-xr-x 28 root mysql 4096 12月 31 09:15 share drwxr-xr-x 4 root mysql 4096 12月 31 09:16 sql-bench drwxr-xr-x 3 root mysql 4096 12月 31 09:16 support-files4、挂载NFS的共享目录并创建MySQL数据存放目录 [root@node1 ~]# mkdir /mydata [root@node1 ~]# mount -t nfs4 192.168.1.198:/mydata /mydata [root@node1 ~]# ll /mydata/ 总用量 16 drwx------ 2 mysql mysql 16384 12月 31 09:02 lost+found [root@node1 ~]# mkdir /mydata/data [root@node1 ~]# ll /mydata/ 总用量 20 drwxr-xr-x 2 mysql mysql 4096 12月 31 09:24 data drwx------ 2 mysql mysql 16384 12月 31 09:02 lost+found5、初始化数据库 [root@node1 ~]# yum -y install libaio [root@node1 ~]# /usr/local/mysql/scripts/mysql_install_db --user=mysql --datadir=/mydata/data/ --basedir=/usr/local/mysql/6、拷贝配置文件、服务启动脚本文件 [root@node1 ~]# cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf cp:是否覆盖"/etc/my.cnf"? yes [root@node1 ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld7、修改MySQL配置文件 [root@node1 ~]# vim /etc/my.cnf datadir = /mydata/data innodb_file_per_table = 18、启动服务并登陆测试 [root@node1 ~]# service mysqld start Starting MySQL.. SUCCESS! [root@node1 ~]# /usr/local/mysql/bin/mysql -e "show databases;" +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+9、拷贝MySQL配置文件、启动服务脚本文件到node2节点上 [root@node1 ~]# scp /etc/init.d/mysqld /etc/init.d/mysqld [root@node1 ~]# scp /etc/init.d/mysqld node2:/etc/init.d/mysqld10、停止MySQL服务 [root@node1 ~]# service mysqld stop Shutting down MySQL.. SUCCESS!
1、创建用户 [root@node2 ~]# groupadd -g 3306 mysql [root@node2 ~]# useradd -g mysql -u 3306 -s /sbin/nologin -M mysql [root@node2 ~]# id mysql uid=3306(mysql) gid=3306(mysql) 组=3306(mysql)2、解压MySQL安装包 [root@node2 ~]# tar xf mysql-5.6.12-linux-glibc2.5-x86_64.tar.gz -C /usr/local/ [root@node2 ~]# ln -sv /usr/local/mysql-5.6.12-linux-glibc2.5-x86_64 /usr/local/mysql "/usr/local/mysql" -> "/usr/local/mysql-5.6.12-linux-glibc2.5-x86_64"3、赋予MySQL安装包权限 [root@node2 ~]# chown -R root.mysql /usr/local/mysql/ [root@node2 ~]# ll /usr/local/mysql/ 总用量 76 drwxr-xr-x 2 root mysql 4096 12月 31 09:15 bin -rw-r--r-- 1 root mysql 17987 6月 20 2013 COPYING drwxr-xr-x 3 root mysql 4096 12月 31 09:16 data drwxr-xr-x 2 root mysql 4096 12月 31 09:16 docs drwxr-xr-x 3 root mysql 4096 12月 31 09:16 include -rw-r--r-- 1 root mysql 7469 6月 20 2013 INSTALL-BINARY drwxr-xr-x 3 root mysql 4096 12月 31 09:16 lib drwxr-xr-x 4 root mysql 4096 12月 31 09:15 man drwxr-xr-x 10 root mysql 4096 12月 31 09:16 mysql-test -rw-r--r-- 1 root mysql 2496 6月 20 2013 README drwxr-xr-x 2 root mysql 4096 12月 31 09:16 scripts drwxr-xr-x 28 root mysql 4096 12月 31 09:15 share drwxr-xr-x 4 root mysql 4096 12月 31 09:16 sql-bench drwxr-xr-x 3 root mysql 4096 12月 31 09:16 support-files4、挂载NFS的共享目录 [root@node2 ~]# mkdir /mydata [root@node2 ~]# mount -t nfs4 192.168.1.198:/mydata /mydata [root@node2 ~]# ll /mydata/ 总用量 20 drwxr-xr-x 5 mysql mysql 4096 12月 31 09:28 data drwx------ 2 mysql mysql 16384 12月 31 09:02 lost+found5、启动MySQL服务 [root@node2 ~]# service mysqld start Starting MySQL. ERROR! The server quit without updating PID file (/mydata/data/node2.test.com.pid).6、查看日志 [root@node2 data]# tail -f node2.test.com.err 141231 09:39:10 mysqld_safe Starting mysqld daemon with databases from /mydata/data /usr/local/mysql/bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory 141231 09:39:10 mysqld_safe mysqld from pid file /mydata/data/node2.test.com.pid ended哦!原来是没有安装libaio包 [root@node2 ~]# yum -y install libaio再次启动MySQL服务 [root@node2 ~]# service mysqld start Starting MySQL.. SUCCESS!
[root@node1 ~]# service heartbeat start Starting High-Availability services: INFO: Resource is stopped Done.[root@node1 ~]# ssh node2 "service heartbeat start" Starting High-Availability services: 2014/12/31_09:50:20 INFO: Resource is stopped Done.
[root@node1 ~]# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host loinet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000link/ether 00:0c:29:c7:14:97 brd ff:ff:ff:ff:ff:ffinet 192.168.1.196/24 brd 255.255.255.255 scope global eth1inet 192.168.1.223/24 brd 255.255.255.255 scope global secondary eth1inet6 fe80::20c:29ff:fec7:1497/64 scope link valid_lft forever preferred_lft forever [root@node1 ~]# df -h 文件系统 容量 已用 可用 已用%% 挂载点 /dev/mapper/VolGroup-lv_root16G 2.7G 12G 19% / tmpfs 495M 0 495M 0% /dev/shm /dev/sda1 485M 32M 428M 7% /boot 192.168.1.198:/mydata8.9G 259M 8.2G 4% /mydata [root@node1 ~]# service mysqld statusSUCCESS! MySQL running (3650)
因为涉及到MySQL的高可用,那么客户端肯定要远程登录MySQL,所以首先赋予远程登录的权限。
[root@node1 ~]# /usr/local/mysql/bin/mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.12 MySQL Community Server (GPL)Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> grant all privileges on *.* to root@'%'; Query OK, 0 rows affected (0.05 sec)mysql> flush privileges; Query OK, 0 rows affected (0.03 sec)mysql> \q Bye
注释:卸载node1和node2节点的挂载共享目录、停止MySQL服务并开机不自启动
[root@node1 ~]# df 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/mapper/VolGroup-lv_root16134560 2786364 12528588 19% / tmpfs 506272 0 506272 0% /dev/shm /dev/sda1 495844 32418 437826 7% /boot [root@node1 ~]# chkconfig mysqld off [root@node1 ~]# chkconfig --list mysqld mysqld 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭 [root@node1 ~]# service mysqld statusERROR! MySQL is not running
[root@node2 ~]# df 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/mapper/VolGroup-lv_root16134560 2786256 12528696 19% / tmpfs 506272 0 506272 0% /dev/shm /dev/sda1 495844 32418 437826 7% /boot [root@node2 ~]# chkconfig mysqld off [root@node2 ~]# chkconfig --list mysqld mysqld 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭 [root@node2 ~]# service mysqld statusERROR! MySQL is not running
2、启动node1和node2节点的hearbeat服务并查看相关信息
[root@node1 ~]# ssh node2 "service heartbeat restart" Stopping High-Availability services: Done.Waiting to allow resource takeover to complete:Done.Starting High-Availability services: 2014/12/31_10:27:01 INFO: Resource is stopped Done.[root@node1 ~]# service heartbeat restart Stopping High-Availability services: Done.Waiting to allow resource takeover to complete:Done.Starting High-Availability services: INFO: Resource is stopped Done.[root@node1 ~]# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host loinet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000link/ether 00:0c:29:c7:14:97 brd ff:ff:ff:ff:ff:ffinet 192.168.1.196/24 brd 255.255.255.255 scope global eth1inet 192.168.1.223/24 brd 255.255.255.255 scope global secondary eth1inet6 fe80::20c:29ff:fec7:1497/64 scope link valid_lft forever preferred_lft forever [root@node1 ~]# df -H 文件系统 容量 已用 可用 已用%% 挂载点 /dev/mapper/VolGroup-lv_root17G 2.9G 13G 19% / tmpfs 519M 0 519M 0% /dev/shm /dev/sda1 508M 34M 449M 7% /boot 192.168.1.198:/mydata9.6G 272M 8.8G 4% /mydata [root@node1 ~]# service mysqld statusSUCCESS! MySQL running (4853)
其次:停止node1上的heartbeat服务,或者直接关机,客户端登录验证
[root@node1 ~]# init 0
[root@node2 ha.d]# ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host loinet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000link/ether 00:0c:29:ad:9f:36 brd ff:ff:ff:ff:ff:ffinet 192.168.1.197/24 brd 255.255.255.255 scope global eth1inet 192.168.1.223/24 brd 255.255.255.255 scope global secondary eth1inet6 fe80::20c:29ff:fead:9f36/64 scope link valid_lft forever preferred_lft forever [root@node2 ha.d]# df 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/mapper/VolGroup-lv_root16134560 2786276 12528676 19% / tmpfs 506272 0 506272 0% /dev/shm /dev/sda1 495844 32418 437826 7% /boot 192.168.1.198:/mydata9289088 264704 8552512 4% /mydata [root@node2 ha.d]# service mysqld statusSUCCESS! MySQL running (6494)
无论你在node1节点上是关闭hearbeat服务还是直接关闭主机电源都不影响客户端正常的使用数据库系统;
无论你在node2节点上是关闭hearbeat服务还是直接关闭电源也都不会影响客户端正常的使用数据库系统。
http://www.cyberciti.biz/faq/centos-fedora-rhel-nfs-v4-configuration/
转载于:https://blog.51cto.com/467754239/1597624
CentOS 6.4 Heartbeat+mysql+nfs实现高可用的mysql集群相关推荐
- MyCAT+MySQL 搭建高可用企业级数据库集群
第1章 课程介绍 课程介绍 1-1 MyCAT导学 试看 1-2 课程介绍 第2章 MyCAT入门 这一章中,我们将回顾了垂直切分,水平切分,分库分表等基础概念,然后快速回如何安装和启动MyCAT的, ...
- 轻松实现基于Heartbeat的高可用web服务集群
高可用集群就是为了保证某项服务能够时时在线,我们可以通过几个9来衡量一个高可用集群提供服务的稳定性,例如5个9的高可用集群必须保证服务一年在线的时间占99.999%,也就是说一年的时间中仅允许服务电线 ...
- win2012故障转移mysql集群_Windows 2012 系统搭建高可用故障转移集群
Windows 2012 系统搭建高可用故障转移集群 一.故障转移集群介绍 1.1系统介绍 故障转移群集是针对具有长期运行的内存中状态或具有大型的.频繁更新的数据状态的应用程序而设计.这些应用程序称为 ...
- 汇总-13台虚拟机搭建一个高可用负载均衡集群架构
要求 用13台虚拟机搭建一个高可用负载均衡集群架构出来,并运行三个站点,具体需求如下. 设计你认为合理的架构,用visio把架构图画出来 搭建lnmp.tomcat+jdk环境 三个站点分别为:dis ...
- RHCS套件实现高可用负载均衡集群(三)——共享存储
注:此博文在博文"RHCS套件实现高可用负载均衡集群(二)"的基础上完成 实验开始前设置实验环境 target端配置--server3 [root@server3 ~]# yum ...
- Keepalived+Nginx实现高可用负载均衡集群
转载自 https://www.cnblogs.com/mrlapulga/p/6857294.html 一 环境介绍 1.操作系统 CentOS Linux release 7.2.1511 (Co ...
- 总结 Underlay 和 Overlay 网络,在k8s集群实现underlay网络,网络组件flannel vxlan/ calico IPIP模式的网络通信流程,基于二进制实现高可用的K8S集群
1.总结Underlay和Overlay网络的的区别及优缺点 Overlay网络: Overlay 叫叠加网络也叫覆盖网络,指的是在物理网络的 基础之上叠加实现新的虚拟网络,即可使网络的中的容器可 ...
- Kubeadm安装高可用的K8S集群--多master单node
Kubeadm安装高可用的K8S集群–多master单node master1 IP 192.168.1.180/24 OS Centos7.6 master2 IP 192.168.1.181/24 ...
- 高可用的MongoDB集群-实战篇
1.概述 最近有同学和网友私信我,问我MongoDB方面的问题:这里我整理一篇博客来赘述下MongoDB供大家学习参考,博客的目录内容如下: 基本操作 CRUD MapReduce 本篇文章是基于Mo ...
最新文章
- 最小二乘法MSE 梯度下降法
- cin.get()和cin.getline()之间的区别
- java类加载器_类加载器
- jsp快到截止日期字体颜色变色_jsp页面中字体变色问题 - Java / Web 开发
- 11选5下期算法_双色球 133期预测 132中奖5+1
- 屏幕元素创建的基本语法
- c语言fread malloc,流操作之读写(fread、fwrite、fopen、malloc)
- 微信小程序生成分享图片踩坑大计划
- Apache的多处理模块MPM
- linux系统下Opencv4.1.1编译安装,以及增加子函数和python中调用
- 如何测试前台获得的数据
- 面试问题——fread和read的区别
- Atitit 获取SqlSessionFactory的三种方式 目录 第一节 DataSource 方式	1 第二节 读取sprbt Url方式 ByteArrayInputStream	1 第三节
- 浅谈-国标GB28181协议上下级对接国标编码要求(四)
- php文件如何转为ppt,pdf文件转换成ppt文件 pdf如何转为ppt
- 创业维艰:为啥大多数创业者都不开心?
- 关于es8316的音频爆破音的解决
- 产品推广都有哪些方法可以用?
- Recover a secret string from random triplets
- 索引的数据结构--MySQL