1.问题

使用mycat配置主从读写分离，启动mycat报错信息如下：

STATUS | wrapper  | 2020/06/17 17:00:11 | --> Wrapper Started as Daemon

STATUS | wrapper  | 2020/06/17 17:00:11 | Launching a JVM...

ERROR  | wrapper  | 2020/06/17 17:00:11 | JVM exited while loading the application.

INFO   | jvm 1    | 2020/06/17 17:00:11 | Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: mysql01: mysql01: Name or service not known

STATUS | wrapper  | 2020/06/17 17:00:15 | Launching a JVM...

INFO   | jvm 2    | 2020/06/17 17:00:16 | Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: mysql01: mysql01: Name or service not known

ERROR  | wrapper  | 2020/06/17 17:00:16 | JVM exited while loading the application.

STATUS | wrapper  | 2020/06/17 17:00:20 | Launching a JVM...

ERROR  | wrapper  | 2020/06/17 17:00:20 | JVM exited while loading the application.

INFO   | jvm 3    | 2020/06/17 17:00:20 | Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: mysql01: mysql01: Name or service not known

STATUS | wrapper  | 2020/06/17 17:00:25 | Launching a JVM...

ERROR  | wrapper  | 2020/06/17 17:00:25 | JVM exited while loading the application.

INFO   | jvm 4    | 2020/06/17 17:00:25 | Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: mysql01: mysql01: Name or service not known

STATUS | wrapper  | 2020/06/17 17:00:29 | Launching a JVM...

ERROR  | wrapper  | 2020/06/17 17:00:30 | JVM exited while loading the application.

INFO   | jvm 5    | 2020/06/17 17:00:30 | Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: mysql01: mysql01: Name or service not known

FATAL  | wrapper  | 2020/06/17 17:00:30 | There were 5 failed launches in a row, each lasting less than 300 seconds.  Giving up.

FATAL  | wrapper  | 2020/06/17 17:00:30 |   There may be a configuration problem: please check the logs.

STATUS | wrapper  | 2020/06/17 17:00:30 | <-- Wrapper Stopped

2.问题解决

原因：无法解析主机名

解决方法：

修改hosts文件

[mysql@mysql01 ~]$ cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.12.60 mysql01

再次启动mycat，状态正常。

[mysql@mysql01 ~]$ mycat status

Mycat-server is running (37136).

mycat启动失败的更多相关文章

  1. MyCat启动失败 Error: Exception thrown by the agent : java.net.MalformedURLException: Local host name unknown: java.net.UnknownHostException: rebirth.a: rebirth.a: unknown error

    在使用Nactive连接MyCat的时候发现怎么连接都不ok,明明已经启动了(实际上启动失败了)! 粗心的我,后来看了下日志,果然,启动失败了 Error: Exception thrown by t ...

  2. mycat启动报Unable to start JVM: No such file or directory (2)【转】

    mycat启动失败,查看日志 /mycat/logs/wrapper.log发现如下信息 1  STATUS | wrapper  | 2017/11/22 16:15:17 | --> Wra ...

  3. windows service 1053错误 启动失败

    做项目移植的时候发现一个项目的window service启动失败,最后试出来是启动时间超时 解决办法是给window service设置一个长一点的等待时间,步骤如下: 启动,输入regedit启动 ...

  4. 玩转Windows服务系列——无COM接口Windows服务启动失败原因及解决方案

    将VS创建的Windows服务项目编译生成的程序,通过命令行 “服务.exe -Service”注册为Windows服务后,就可以通过服务管理器进行管理了. 问题 通过服务管理器进行启动的时候,发现服 ...

  5. ubuntu升级内核后vmware-player启动失败

    在虚拟机软件中,vmware player是对硬件支持很好的,通过它可以很方便的使用网银.单片机开发等等工作.但是最近ubuntu每次升级内核后,vmware都会启动失败,提示:Before you ...

  6. CentOS 7下MySQL服务启动失败的解决思路

    今天,启动MySQL服务器失败,如下所示: [root@spark01 ~]# /etc/init.d/mysqld start Starting mysqld (via systemctl): Jo ...

  7. 服务器重启后SQL Server Agent由于"The EventLog service has not been started" 启动失败

    案例环境: 操作系统   : Microsoft Windows Server 2003 Standard Edtion SP2 数据库版本 : SQL Server 2005 Standard Ed ...

  8. db2start启动失败

    db2start启动失败 [db2inst1@localhost ~]$ db2start db2start: error while loading shared libraries: libaio ...

  9. PHP5.6启动失败

    PHP编译安装完毕,启动失败,提示 1 [23-Jun-2014 12:27:02] ERROR: failed to open configuration file '/usr/local/php/ ...

随机推荐

  1. 链表（LinkedList）解题总结

    链表基础知识 定义 链表(Linked List)是一种常见的基础数据结构,是一种线性表,但是并不会按线性的顺序存储数据,而是在每一个节点里存到下一个节点的指针(Pointer). 链表的操作 操作 ...

  2. Mac系统使用Parallels Desktop安装Win10

    1.Parallels Desktop破解版下载 2.原版Windows 10 2004 X64位 (原版安装)2020 11 Windows 系统镜像必须为原版,ghost版不行.亲测ghost版本 ...

  3. sqlilab less23-less27a

    less23 本关过滤掉了注释符号-- 和#,并且变量带入数据库时被单引号包裹.需要将后边的单引号闭合.使用and '1'='1,将其加在注入语句的末尾,使用suffix参数 less-24 以后填坑 ...

  4. addslashes()

    addslashes() 函数返回在预定义字符之前添加反斜杠的字符串. 作用:防止sql注入

  5. 使用思维导图MindManager能否增强记忆？

    学生时代,每当面对冗杂的需要背诵的课业时,有很多人都会发出"这么多内容怎么背啊"."我讨厌死记硬背"."昨天背完今天就忘了"的呐喊.那么,如 ...

  6. 如何改变CorelDRAW的外观主题皮肤？

    CorelDRAW,我们通常也简称为CDR,是一款专业而且使用广泛的矢量图形绘制软件,也常用于绘制图形以及平面设计中.今天我们以CorelDRAW 2020来为大家演示一下,如何改变CorelDRAW ...

  7. try-with-resources和multi-catch的使用

    1.首先说一下以前开发中我们在处理异常时,我们会使用try-catch-finally来处理异常. //使用try-catch-finallypublic static void main(Strin ...

  8. java类private/this的使用

    package 类的练习; public class Person { private String name; private int age; private String sex; privat ...

  9. gitlab 文件读取+rce复现 CVE202010977

    文件读取实现,首先生成两个project 再任意一个project添加issue,然后描述如下: ![a](/uploads/11111111111111111111111111111111/../. ...

  10. Alpha冲刺-第四次冲刺笔记

    Alpha冲刺-冲刺笔记 这个作业属于哪个课程 https://edu.cnblogs.com/campus/fzzcxy/2018SE2 这个作业要求在哪里 https://edu.cnblogs. ...