azkaban手动激活失败

最新推荐文章于 2025-12-02 21:20:38 发布

原创最新推荐文章于 2025-12-02 21:20:38 发布 · 771 阅读

19 ·

CC 4.0 BY-SA版权

文章标签：

#java #前端 #linux

问题

手动执行这一段代码激活azkaban失败

curl -G "master:12321/executor?action=activate"&&echo

显示以下问题

[hadoop@master azkaban-exec]$ curl -G "master:12321/executor?action=activate"&&echo
curl: (7) Failed connect to master:12321; Connection refused

查看日志发现报错

[hadoop@master azkaban-exec]$ ls
bin   currentpid  executorServerLog__2025-11-06+17:48:46.out  lib   plugins   temp
conf  executions  executorServerLog__2025-11-08+23:09:35.out  logs  projects

cat executorServerLog__2025-11-08+23:09:35.out

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.GeneratedConstructorAccessor21.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1129)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:358)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2489)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2526)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2311)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347)
at org.apache.commons.dbcp2.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:39)
at org.apache.commons.dbcp2.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:256)
at org.apache.commons.dbcp2.BasicDataSource.validateConnectionFactory(BasicDataSource.java:2304)
at org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2290)
... 11 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
at java.net.Socket.connect(Socket.java:606)
at java.net.Socket.connect(Socket.java:555)
at java.net.Socket.<init>(Socket.java:451)
at java.net.Socket.<init>(Socket.java:261)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:308)
... 26 more

发现是mysql没有来连接成功，查看mysql服务发现没有启动成功

查看mysql的日志，查看error的行

sudo tail -200f /var/log/mysqld.log

2025-11-08T15:57:34.761377Z 0 [ERROR] unknown variable 'max allowed packet=1024M'
2025-11-08T15:57:34.761402Z 0 [ERROR] Aborting

所以错误出在mysql的配置文件

sudo vim /etc/my.cnf

把max allowed packet=1024M换成max_allowed_packet=1024M
接下来运行

sysytemctl restart mysql
sysytemctl status mysql

mysql就可以运行成功了
接下来再查看azkaban就好了