VMBitrix 7.1.0 в релизе

unable to connect to database, check login_user and login_password are correct or /root/.my.cnf has the credentials. Exception message: (2002, \"Can't connect to local MySQL server through socket '/var/lib/mysqld/mysqld.sock' (2)

/usr/bin/mysqld_safe: line 200:  2746 Killed                  LD_PRELOAD=/usr/lib64/libjemalloc.so.1 nohup /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/log/mysql/error.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysqld/mysqld.sock --port=3306 < /dev/null > /dev/null 2>&1

Enter site directory (ex. /home/bitrix/ext_www/test) or 0 for exit:/home/bitrix/www

./bitrix-env.sh
reboot

File: ...bitrix/modules/main/include/dbquery_error.php 
[File: .../bitrix/modules/socialservices/classes/mysql/authmanager.php 
Line: 131] 
Query: SELECT  SU.USER_ID as USER_ID, SU.OATOKEN as OATOKEN, SU.OATOKEN_EXPIRES as OATOKEN_EXPIRES, SU.REFRESH_TOKEN as REFRESH_TOKEN FR OM b_socialservices_user SU WHERE ((((SU.USER_ID = 1 )))) AND ((((SU.EXTERNAL_AUTH_ID = 'Bitrix24Net' )))) 
[[2006] MySQL server has gone away]