Mysql Ejabberd未能连接到；localhost"；：3306:{错误，“连接失败：连接被拒绝”}

我正在尝试使用

MySQL

设置

ejabberd

。每次都会出现

localhost:3306:connection-densed错误。有什么解决办法吗

环境
mysql的配置部分
错误日志
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_recv:连接本地主机失败：3306:连接被拒绝
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_recv:连接本地主机失败：3306:连接被拒绝
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd_sql:log:1043 p1_mysql_conn:连接到“localhost”失败：3306:{错误，“连接失败：连接被拒绝”}
2019-11-30 22:44:49.117[错误]@ejabberd\u sql:log:1043 p1\u mysql\u连接：启动后错误连接失败
2019-11-30 22:44:49.117[错误]@ejabberd\u sql:log:1043 p1\u mysql\u连接：启动后错误连接失败

error.log/crash.log中的错误
2019-11-30 22:36:58=事故报告====
撞车者：
初始调用：mod_mqtt:init/1
pid：
注册名称：[]
异常退出：{db_failure，[{gen_server，init_it，6，[{file，“gen_server.erl”}，{line，349}]}，{proc_lib，init_p_do_apply，3，[{file，“proc_lib.erl”}，{line，247}}
祖先：[ejabberd_gen_mod_sup，ejabberd_sup，]
消息队列：0
信息：[]
链接：[]
字典：[]
陷阱_出口：错误
状态：正在运行
堆大小：987
堆栈大小：27
减少：1 073
邻居：

可能是连接丢失了
可能是遥不可及的
尝试以下
mysql-u ejabberd-h localhost-p password
可能是连接丢失了
可能是遥不可及的
尝试以下
mysql-u ejabberd-h localhost-p password
问题来自mysql的
mysql
。我在
mysql日志
文件中找到了它。我将
max\u allowed\u数据包的大小增加到了一个更大的大小，并增加了
RAM
，这一切都很好。
问题来自
mysql
。我在
mysql日志
文件中找到了它。我增加了
max\u allowed\u数据包的大小，增加了
RAM
，这一切都很好。
你安装了MySQL服务器吗？它的日志是怎么说的？是的，我已经安装了mysql。我看到了mysql日志，连接到mysql，但这是不允许的。看起来是最大包大小问题。错误消息是什么？Mysql日志显示读取通信数据包时出错。我想把
max\u allowed\u数据包调整到更大的大小。你安装MySQL服务器了吗？它的日志是怎么说的？是的，我已经安装了mysql。我看到了mysql日志，连接到mysql，但这是不允许的。看起来是最大包大小问题。错误消息是什么？Mysql日志显示读取通信数据包时出错。我想把
max\u allowed\u数据包调整到更大的尺寸
ejabberd version: 19.09
OS: Linux (Debian)
Installed from: source

auth_method: sql
default_db: sql
sql_type: mysql
sql_server: "localhost"
sql_database: "ejabberd"
sql_username: "ejabberd"
sql_password: "ejabberd"
sql_port: 3306

2019-11-30 22:44:49.117 [error] <0.449.0>@ejabberd_sql:log:1043 p1_mysql_recv: Failed connecting to localhost:3306: connection refused
2019-11-30 22:44:49.117 [error] <0.450.0>@ejabberd_sql:log:1043 p1_mysql_recv: Failed connecting to localhost:3306: connection refused
2019-11-30 22:44:49.117 [error] <0.431.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.432.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.433.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.434.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.435.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.436.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.437.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.438.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.439.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.440.0>@ejabberd_sql:log:1043 p1_mysql_conn: Failed connecting to "localhost":3306 : {error,"connect failed: connection refused"}
2019-11-30 22:44:49.117 [error] <0.421.0>@ejabberd_sql:log:1043 p1_mysql_conn: post_start error connect_failed
2019-11-30 22:44:49.117 [error] <0.427.0>@ejabberd_sql:log:1043 p1_mysql_conn: post_start error connect_failed

2019-11-30 22:36:58 =CRASH REPORT====
crasher:
initial call: mod_mqtt:init/1
pid: <0.525.0>
registered_name: []
exception exit: {db_failure,[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,349}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]}
ancestors: [ejabberd_gen_mod_sup,ejabberd_sup,<0.88.0>]
message_queue_len: 0
messages: []
links: [<0.403.0>]
dictionary: []
trap_exit: false
status: running
heap_size: 987
stack_size: 27
reductions: 1073
neighbours: