| Server IP : 104.21.38.3 / Your IP : 172.70.188.81 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /www/server/mysql/src/mysql-test/suite/perfschema/r/ |
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flush status; flush hosts; flush user_resources; flush privileges; select @@global.debug; @@global.debug select @@global.max_connect_errors; @@global.max_connect_errors 100 select @@global.max_user_connections; @@global.max_user_connections 0 select @@global.max_connections; @@global.max_connections 151 select `User`, `Host` from mysql.`user` where `host` like '%\\%%'; User Host select `User`, `Host` from mysql.`user` where `user` like '192.%'; User Host select `User`, `Host` from mysql.`user` where `user` like '2001:%'; User Host select `User`, `Host` from mysql.`user` where `user` like 'santa.claus.%'; User Host select @@global.max_connect_errors into @saved_max_connect_errors; set global max_connect_errors = 3; set @orig_sql_mode= @@sql_mode; set sql_mode= (select replace(@@sql_mode,'NO_AUTO_CREATE_USER','')); Warnings: Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release. grant select on test.* to 'root'@'santa.claus.ipv4.example.com'; Warnings: Warning 1287 Using GRANT for creating new user is deprecated and will be removed in future release. Create new user with CREATE USER statement. set sql_mode= @orig_sql_mode; Warnings: Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release. create user 'quota'@'santa.claus.ipv4.example.com'; grant select on test.* to 'quota'@'santa.claus.ipv4.example.com'; select "Con1 is alive"; Con1 is alive Con1 is alive select current_user(); current_user() root@localhost set global debug= "+d,vio_peer_addr_fake_ipv4,getnameinfo_fake_ipv4,getaddrinfo_fake_good_ipv4,native_password_bad_reply"; ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 1 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 1 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 2 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 2 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 3 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 3 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR HY000: Host '192.0.2.4' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 3 COUNT_HOST_BLOCKED_ERRORS 1 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 3 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR HY000: Host '192.0.2.4' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 3 COUNT_HOST_BLOCKED_ERRORS 2 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 3 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set flush hosts; ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 1 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 1 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 2 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 2 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set set global debug= "-d,native_password_bad_reply"; message Valid connection should reset SUM_CONNECT_ERROR counter set global debug= "+d,native_password_bad_reply"; "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 0 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 2 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 1 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 3 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 2 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 4 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR 08S01: Bad handshake "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 3 COUNT_HOST_BLOCKED_ERRORS 0 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 5 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR HY000: Host '192.0.2.4' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 3 COUNT_HOST_BLOCKED_ERRORS 1 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 5 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set ERROR HY000: Host '192.0.2.4' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' "Dumping performance_schema.host_cache" IP 192.0.2.4 HOST santa.claus.ipv4.example.com HOST_VALIDATED YES SUM_CONNECT_ERRORS 3 COUNT_HOST_BLOCKED_ERRORS 2 COUNT_NAMEINFO_TRANSIENT_ERRORS 0 COUNT_NAMEINFO_PERMANENT_ERRORS 0 COUNT_FORMAT_ERRORS 0 COUNT_ADDRINFO_TRANSIENT_ERRORS 0 COUNT_ADDRINFO_PERMANENT_ERRORS 0 COUNT_FCRDNS_ERRORS 0 COUNT_HOST_ACL_ERRORS 0 COUNT_NO_AUTH_PLUGIN_ERRORS 0 COUNT_AUTH_PLUGIN_ERRORS 0 COUNT_HANDSHAKE_ERRORS 5 COUNT_PROXY_USER_ERRORS 0 COUNT_PROXY_USER_ACL_ERRORS 0 COUNT_AUTHENTICATION_ERRORS 0 COUNT_SSL_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_ERRORS 0 COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0 COUNT_DEFAULT_DATABASE_ERRORS 0 COUNT_INIT_CONNECT_ERRORS 0 COUNT_LOCAL_ERRORS 0 COUNT_UNKNOWN_ERRORS 0 FIRST_ERROR_SEEN set LAST_ERROR_SEEN set revoke select on test.* from 'root'@'santa.claus.ipv4.example.com'; drop user 'root'@'santa.claus.ipv4.example.com'; revoke select on test.* from 'quota'@'santa.claus.ipv4.example.com'; drop user 'quota'@'santa.claus.ipv4.example.com'; set global max_connect_errors = @saved_max_connect_errors; set global debug= default;