已解决 canal启动报错java.net.UnknownHostException: xxx: Name or service not known

[metaluo]

启动的时候有如下报错

2021-02-18 09:42:57.017 [destination = test , address = / :3306 , EventParser] ERROR c.a.o.c.p.inbound.mysql.rds.RdsBinlogEventParserProxy - dump address /10.136.0.92:3306 has an error, retrying. caused by
com.alibaba.otter.canal.parse.exception.CanalParseException: Unknown host
Caused by: java.net.UnknownHostException: bogon: bogon: Name or service not known
at java.net.InetAddress.getLocalHost(InetAddress.java:1505) ~[na:1.8.0_181]
at com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser.generateUniqueServerId(MysqlEventParser.java:342) ~[canal.parse-1.1.5-SNAPSHOT.jar:na]
at com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser.buildMysqlConnection(MysqlEventParser.java:326) ~[canal.parse-1.1.5-SNAPSHOT.jar:na]
at com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser.buildErosaConnection(MysqlEventParser.java:75) ~[canal.parse-1.1.5-SNAPSHOT.jar:na]
at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:177) ~[canal.parse-1.1.5-SNAPSHOT.jar:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
Caused by: java.net.UnknownHostException: bogon: Name or service not known
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) ~[na:1.8.0_181]
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) ~[na:1.8.0_181]
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) ~[na:1.8.0_181]
at java.net.InetAddress.getLocalHost(InetAddress.java:1500) ~[na:1.8.0_181]
... 5 common frames omitted
2021-02-18 09:42:57.020 [destination = test , address = /10.136.0.92:3306 , EventParser] ERROR com.alibaba.otter.canal.common.alarm.LogAlarmHandler - destination:test[com.alibaba.otter.canal.parse.exception.CanalParseException: Unknown host
Caused by: java.net.UnknownHostException: bogon: bogon: Name or service not known
at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
at com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser.generateUniqueServerId(MysqlEventParser.java:342)
at com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser.buildMysqlConnection(MysqlEventParser.java:326)
at com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser.buildErosaConnection(MysqlEventParser.java:75)
at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:177)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.UnknownHostException: bogon: Name or service not known
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
... 5 more
]
2021-02-18 09:42:57.020 [destination = test , address = /10.136.0.92:3306 , EventParser] ERROR c.a.o.c.p.inbound.mysql.rds.RdsBinlogEventParserProxy - parse events has an error
com.alibaba.otter.canal.parse.exception.CanalParseException: illegal connection is null

[CloudCanal-万少]

您好，这个一般是由于您的host文件中的设置有问题会有类似的报错。可以按照如下步骤确认您的linux系统配置

### 1. 检查您/etc/hostname中的内容
cat /etc/hostname

### 2. 检查第一步获取的hostname在您的/etc/hosts文件中是否配置了正确的解析
cat /etc/hosts

[CloudCanal-万少]

您好，这个一般是由于您的host文件中的设置有问题会有类似的报错。可以按照如下步骤确认您的linux系统配置

### 1. 检查您/etc/hostname中的内容
cat /etc/hostname

### 2. 检查第一步获取的hostname在您的/etc/hosts文件中是否配置了正确的解析
cat /etc/hosts