很久以前安装过，本来以为5分钟可以解决的问题，最终研究了一上午，主要原因是php版本的问题，这个没有注意到，需要使用最新的php7版本。
https://www.phpmyadmin.net/
下载phpmyadmin
phpMyAdmin-5.1.2-all-languages.zip
# cat /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)
需要使用最新版本的php，确认没有安装php，如有，请卸载
# rpm -qa |grep php
# rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
# rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
# yum -y install php72w php72w-cli php72w-common php72w-devel php72w-embedded php72w-fpm php72w-gd php72w-mbstring php72w-mysqlnd php72w-opcache php72w-pdo php72w-xml
# php -v
# yum install httpd unzip
解压
# unzip phpMyAdmin-5.1.2-all-languages.zip -d /var/www/html
# cd /var/www/html/
# mv phpMyAdmin-5.1.2-all-languages/ phpmyadmin
# cd phpmyadmin/
# cp config.sample.inc.php config.inc.php
配置多个主机的数据库访问，并配置cookie的加密字符串，可以使用openssl rand -base64 32随机生成
# vi config.inc.php
$cfg['blowfish_secret'] = 'VDIDF98ca3ucSuV1OUuPsyo5U90QIZmNTLeKWmQytRE=';
/**
* Servers configuration
*/
$i = 0;
/**
* First server
*/
$i++;
/* Authentication type */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
/* Server parameters */
$cfg['Servers'][$i]['host'] = '192.168.49.137';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['AllowNoPassword'] = false;
/**
* Second server
*/
$i++;
/* Authentication type */
$cfg['Servers'][$i]['auth_type'] = 'cookie';
/* Server parameters */
$cfg['Servers'][$i]['host'] = '192.168.49.138';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['AllowNoPassword'] = false;
启动web服务
# systemctl enable httpd
# systemctl start httpd
浏览器访问,其中用户名密码是mysql数据库的用户名密码
http://192.168.49.139/phpmyadmin/
