早上打开浏览器准备登陆某个系统,发现Error 404--Not Found,有点奇怪,这个服务器应该没人用了才对,然后到weblogic后台去看日志,报如下错误: "Could not create pool connection. The DBMS driver exception was: null,  message from server: "Host '192.168.XX.XX' is blocked because of many connection errors;…
系统或者程序连接数据报错 null, message from server: "Host '192.168.6.68' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'" 原因:同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞 使用客户端连接数据库…
一.问题现象 mysql远程连接报错 ERROR (HY000): Host '192.168.7.210' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 二.问题原因 一般max_connect_errors = 10,要调高错误连接的数量 三.解决方法 登录到要连接的数据中,进行如下配置 mysql> show variables like 'max_connect_er…
mysql -uroot -p admin123!@#qwe show global variables like '%max_connect_errors%'; set global max_connect_errors=10000; flush_all; show global variables like '%max_connect_errors%';…
1.别人在用自己的tomcat访问我留的查询接口时,出现Cannot create PoolableConnectionFactory (null,  message from server: "Host 'admin-PC' is not allowed to connect to this MySQL server")这个问题 解决办法: mysql -u root -p mysql>use mysql; mysql>select 'host' from user wh…
程序无法连接MySQL,提示:  null, message from server: "Host '192.168.6.68' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'" 原因:同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解决办法: 进入mysql安装目录用mysqlad…
hadoop集群搭建了ha,初次启动正常,最近几天启动时偶尔发现,namenode1节点启动后一段时间(大约10几秒-半分钟左右),namenode1上namenode进程停掉,查看日志: -- ::, INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave1/. Already tried , sleepTime= MILLISECONDS) -- ::, WARN org.apache.hadoop.hdfs.…
192.168.11.12:8485: Call From hu-hadoop1/192.168.11.11 to hu-hadoop2:8485 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused at org.apache.hadoop.hdfs.…
环境:linux,mysql5.5.21 错误:Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 原因: 同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解决方法: 1.提高允许的max_connection_errors数量(治标不治本): ① 进入Mysql数据库查看max_con…
转自:http://www.cnblogs.com/susuyu/archive/2013/05/28/3104249.html 环境:linux,mysql5.5.21 错误:Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 原因: 同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解…
 一:服务器异常:Host 'xx.xxx.xx.xxx' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 发现主机又出错了,错误是这样.ERROR 1129 (00000): Host 'XXXXXX' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'    …
错误:MySql Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 解决方法: 使用mysqladmin flush-hosts 命令清理一下hosts文件(不知道mysqladmin在哪个目录下可以使用命令查找:whereis mysqladmin): 在查找到的目录下使用命令修改:/usr/bin/mysqladmin flush-hosts -h192.168.1…
错误:Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 原因: 同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解决方法: 1.提高允许的max_connection_errors数量(治标不治本): ① 进入Mysql数据库查看max_connection_errors: show…
MySQL 出现 Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 一大早要连到我的服务器,出现这个错误. 难道是因为我之前把 root 远程连接给关了,提示不对呀,看来是太多连接错误被阻止了. 解除方式,修改,默认只有 10 max_connect_errors=1000 那么问题来了,以后如何避免呢? TODO 等以后知道了再补充. 参考: MySQL 连接出错 m…
Host "xxx.xxx.xxx.xxx" is blocked because of many connection errors 1.原因:当使用错误的密码连接mysql时,超过设定的次数 IP或主机名就会被mysqld阻塞访问. ①中文 ②Mysql官方描述英文   ③解决问题(第三方英文)             2.查看关键参数值: 查看 "max_connect_errors" SHOW VARIABLES LIKE '%max_connect_err…
场景:  预发环境中,同事已经搭建了一套hadoop集群,由于版本与所需不符,所以需要替换版本 问题描述: 在配置文件都准确的情况下,启动hadoop,出现以下报错: 启动之前初始化:   初始化目录跟配置文件目录不一致 hdfs  namenode -format [root@hdoop2 hadoop-2.8.5]# hadoop dfs -ls /DEPRECATED: Use of this script to execute hdfs command is deprecated.Ins…
解决方法如下:  方法 1.在线修改提高允许的max_connection_errors数量: A. 登录Mysql数据库查看max_connection_errors: mysql>show variables like ;  C. 查看是否修改成功: mysql>show variables like '%max_connect_errors%';   方法 2.使用mysqladmin flush-hosts 命令清理一下hosts文件 [root@--- ~]# mysqladmin…
环境:linux,mysql5.5.21 错误:Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 原因: 同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解决方法: 1.提高允许的max_connection_errors数量(治标不治本): ① 进入Mysql数据库查看max_con…
java.sql.SQLException: Could not establish connection to 192.168.8.111:10000/default: java.net.ConnectException: Connection refused: connect at org.apache.hadoop.hive.jdbc.HiveConnection.<init>(HiveConnection.java:117) 需要启动:hive --service hiveserver…
不要贪快,以你的聪明,只要有耐心,什么事不成,你真的争口气,羞羞这势利的世界也好! --久节奏,慢读书 转自:https://www.cnblogs.com/susuyu/archive/2013/05/28/3104249.html 环境:linux,mysql5.5.21 错误:Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 原因: 同一个ip在短时间内产生太多(…
报错背景: CDH集群中,将kafka和Flume整合,将kafka的数据发送给Flume消费. 启动kafka的时候正常,但是启动Flume的时候出现了报错现象. 报错现象: DH--.cdh5./lib/hadoop/lib/native:/opt/cloudera/parcels/CDH--.cdh5./lib/hbase/bin/../lib/native/Linux-amd64- // :: INFO zookeeper.ZooKeeper: Client environment:ja…
1:安装好hive,准备启动的时候出现下面的错误(由于hive是基于Hadoop的,所以必须先将你的集群启动起来,我就是没有启动集群,直接启动hive导致的错误): [root@master bin]# ./hive Logging initialized -bin/lib/hive-common-.jar!/hive-log4j.properties Exception failed on connection exception: java.net.ConnectException: Con…
1:练习spark的时候,操作大概如我读取hdfs上面的文件,然后spark懒加载以后,我读取详细信息出现如下所示的错误,错误虽然不大,我感觉有必要记录一下,因为错误的起因是对命令的不熟悉造成的,错误如下所示: scala> text.collect java.net.ConnectException: Call From slaver1/ failed on connection exception: java.net.ConnectException: Connection refused;…
先看解决方案,再看唠嗑,唠嗑可以忽略. 解决方案: 使用start yarn.sh启动yarn就可以了. 唠嗑: 今天学习Spark基于Yarn部署.然后总以为Yarn是让Spark启动的,提交程序的时候Yarn就会启动~!于是乎我就只开启了Spark程序,没开启Yarn,然后执行提交 ./spark-submit --class org.apache.spark.examples.JavaSparkPi \ --master yarn \ --deploy-mode cluster \ --d…
错误原因: 1.sshd 未安装:sudo apt-get install openssh-server 2.sshd 未启动:sudo net start sshd 3.防火墙:sudo ufw disable…
应用日志提示错误:create connection error, url: jdbc:mysql://10.45.236.235:3306/db_wang?useUnicode=true&characterEncoding=UTF-8, errorCode 1129, state HY000java.sql.SQLException: null, message from server: "Host '10.30.174.183' is blocked because of many…
错误日志: message from server: "Host '10.250.112.141' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'" 原因: 同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解决方法: 1.提高允许的max_connect_errors数量(这种方法不…
1. 问题:服务启动时,日志报错,导致启动失败: Caused by: com.mysql.cj.exceptions.CJException: null,  message from server: "Host 'ip' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'" 2. 解决: (1)如果mysql 在当前机器,使用 mysql -u 用户名 -p  输入密码…
mysql Host ‘XXXXXX’ is blocked because of many connection errors ERROR 1129 (00000): Host ‘XXXXXX’ is blocked because of many connection errors; unblock with ‘mysqladmin flush-hosts’查了下资料 这说明mysqld已经得到了大量(max_connect_errors)的主机’hostname’的在中途被中断了的连接请求…
环境:linux,mysql5.5.37 错误:Host is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' 原因: 同一个ip在短时间内产生太多(超过mysql数据库max_connection_errors的最大值)中断的数据库连接而导致的阻塞: 解决方法: 1.提高允许的max_connection_errors数量(治标不治本): ① 进入Mysql数据库查看max_con…