在安装Kafka-eagle的时候遇见几个坑，在这里分享一下：
注意：版本问题，若按本文章不能解决，则着重查看版本的问题；这里只是提供解决针对问题的思路
Kafka版本：kafka_2.11-0.11.0.2
Kafka-eagle版本：kafka-eagle-bin-1.3.7
MySQL版本：5.7.28 MySQL
坑1：关于安装成功之后返回状态页500
需要使用到JMX端口，配置Kafka/bin下的 kafka-server-start.sh：
#!/bin/bash
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
if [ $# -lt 1 ];
then
echo "USAGE: $0 [-daemon] server.properties [--override property=value]*"
exit 1
fi
base_dir=$(dirname $0)
if [ "x$KAFKA_LOG4J_OPTS" = "x" ]; then
export KAFKA_LOG4J_OPTS="-Dlog4j.configuration=file:$base_dir/../config/log4j.properties"
fi
# 注意：这里是修改后的文件
if [ "x$KAFKA_HEAP_OPTS" = "x" ]; then
export KAFKA_HEAP_OPTS="-Xmx1G -Xms1G"
#添加代码如下：
export JMX_PORT="9999"
fi
EXTRA_ARGS=${EXTRA_ARGS-'-name kafkaServer -loggc'}
COMMAND=$1
case $COMMAND in
-daemon)
EXTRA_ARGS="-daemon "$EXTRA_ARGS
shift
;;
*)
;;
esac
exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"
解决：
1. 进入eagle的bin目录下，编辑文件 ke.sh
# 注释掉一下几行代码
#rm -rf $KE_HOME/kms/webapps/ke #rm -rf $KE_HOME/kms/work #mkdir -p $KE_HOME/kms/webapps/ke #cd $KE_HOME/kms/webapps/ke #${JAVA_HOME}/bin/jar -xvf $KE_HOME/kms/webapps/ke.war
2. 进入到 /export/servers/kafka-eagle-bin-1.3.7/eagle/kms/webapps/ke/WEB-INF/lib 删除Jackson开头的jar包
rm -fr jackson-*.jar
3. 启动 zk集群和Kafka集群，然后启动eagle：
# 注意要配置好环境变量，并source
zk.sh start
坑2：连接org.sqlite.JDBC没有问题，但是连接MySQL失败，一直进不去Dashboard页面
######################################
# 这里配置自己的集群，我这里只有一套，删除了原来的cluster2
######################################
kafka.eagle.zk.cluster.alias=cluster1
cluster1.zk.list=node01:2181,node02:2181,node03:2181
######################################
# 默认即可
######################################
kafka.zk.limit.size=25
######################################
# 默认即可
######################################
kafka.eagle.webui.port=8048
######################################
# 删除了cluster2，保留1，为Kafka，0.96版本之后，offset信息保存在Kafka集群中
######################################
cluster1.kafka.eagle.offset.storage=kafka
######################################
# 都设置为true
######################################
kafka.eagle.metrics.charts=true
kafka.eagle.sql.fix.error=true
######################################
# 默认即可
######################################
kafka.eagle.sql.topic.records.max=5000
######################################
# 默认即可，也可以设置为true
######################################
kafka.eagle.mail.enable=true
kafka.eagle.mail.sa=alert_sa@163.com
kafka.eagle.mail.username=alert_sa@163.com
kafka.eagle.mail.password=mqslimczkdqabbbh
kafka.eagle.mail.server.host=smtp.163.com
kafka.eagle.mail.server.port=25
######################################
# 默认
######################################
#kafka.eagle.im.dingding.enable=true
#kafka.eagle.im.dingding.url=https://oapi.dingtalk.com/robot/send?access_token=
#kafka.eagle.im.wechat.enable=true
#kafka.eagle.im.wechat.token=https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=xxx&corpsecret=xxx
#kafka.eagle.im.wechat.url=https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=
#kafka.eagle.im.wechat.touser=
#kafka.eagle.im.wechat.toparty=
#kafka.eagle.im.wechat.totag=
#kafka.eagle.im.wechat.agentid=
######################################
# 默认
######################################
kafka.eagle.topic.token=keadmin
######################################
# 默认
######################################
cluster1.kafka.eagle.sasl.enable=false
cluster1.kafka.eagle.sasl.protocol=SASL_PLAINTEXT
cluster1.kafka.eagle.sasl.mechanism=PLAIN
######################################
# kafka jdbc driver address
######################################
kafka.eagle.driver=com.mysql.jdbc.Driver
kafka.eagle.url=jdbc:mysql://你的IP:3306/ke?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
kafka.eagle.username=root
kafka.eagle.password=你的密码
# 之前返回500报错，使用sqlite测试
#kafka.eagle.driver=org.sqlite.JDBC
#kafka.eagle.url=jdbc:sqlite:/export/servers/kafka-eagle-bin-1.3.7/eagle/db/ke.db
#kafka.eagle.username=root
#kafka.eagle.password=你的密码
解决：
1. 测试MySQL是否能够让外界连接到
2. 进入到你的MySQL：
-- 进入MySQL, 123456是你的密码
mysql -u root -p123456
-- 使用mysql数据库
use mysql
-- 查看user表中的数据 root后面 有没有跟%
select User,Host from user;
-- 如果没有，则使用以下命令 这里的root是你的用户名 123456是你的密码
grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
flush privileges;
-- 退出，最好使用Windows的MySQL工具连接一下测试
最后，启动eagle，登录查看是否成功！
如有问题，欢迎讨论！！！
