===== install additional
yum install libssh2 libssh-devel
pecl install ssh2
yum install php-pear
yum install php-devel
== install plugin on folder “plugin”
wget
https://downloads.wordpress.org/plugin/ssh-sftp-updater-support.0.8.5.zipUnzip ssh-sftp-updater-support.0.8.5.zip
== add configure support ssh2 (sftp) method
#vi wp-config.php
/* Add sftp method */
define( 'FS_METHOD', 'ssh2');
===special Thank ===
[https://developer.wordpress.org/apis/wp-config-php/#wordpress-upgrade-constants]