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所以我經由ERROR 2013（HY000）：在 '讀初始通信分組'，系統錯誤而丟失連接到MySQL服務器：54
sudo apt-get install mysql-server
創建了基於Ubuntu和安裝$ 5液滴的MySQL然後我跑的sudo mysql_secure_installation沒有更改密碼並點擊其他所有問題。
然後按照「配置MySQL以允許遠程訪問」部分的說明操作。
我/etc/mysql/my.cnf現在看起來是這樣的：
#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
#skip-external-locking
skip-name-resolve
#skip-networking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = <MY_DROPPLET_IP>
connect_timeout = 100
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
#
# Error log - should be very few entries.
#
log_error = /var/log/mysql/error.log
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
Then I might have configured something for port 3306 and ip-tables but can't remember what i tis (found on this community as well)
但是我無法從我的計算機連接到遠程數據庫:(因爲我得到的標題錯誤，我GOOGLE了地獄了出來，並好像林的唯一的人在世界上獲得的系統錯誤：54件事
這是MySQL的版本： 的MySQL版本14.14 DISTRIB 47年5月5日，爲Debian的Linux-GNU（x86_64的）使用readline的6.3
我也是授予完全權限root用戶和其他一些用戶（測試）
這樣做：
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'r00t' WITH GRANT OPTION;
，並在天真的嘗試，我跑到下面的命令爲「開放端口3306」：
iptables -A INPUT -p tcp -s 0/0 --sport 1024:65535 -d <serverip> --dport 3306 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -p tcp -s <serverip> --sport 3306 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
但我仍然得到來自地獄的這個錯誤....：C
也嘗試遠程登錄服務器，這是發生了什麼：
$ echo X | telnet -e X 45.58.41.103 3306
導致：
Telnet escape character is 'X'.
Trying <ip>...
Connected to <ip>
Escape character is 'X'.
現在我想哭：C
我只是想連接到通過MySQL工作臺的服務器，並嚴格進行測試部署在遠程服務器上的數據庫臨時目的（安全性不在這裏）。