最近学习的微服务需要用到zookeeper，索性今天重新安装了zookeeper-3.8.0想再找找感觉。以前3.版本无脑安装完成，设定好就可启动，谁知道3.8.0不能无脑了，需要脑子拿出来活动一下了。
zookeeper-3.8.0安装完成一直启动不了：
[root@localhost zookeeper-3.8.0]# ./bin/ status
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper-3.8.0/bin/…/conf/
Client port found: 2181. Client address: localhost. Client SSL: false.
Error contacting service. It is probably not running.
首先查看了下安装根路径下的logs目录里的out日志，发现：
2022-05-15 00:09:22,833 [myid:1] - ERROR [main:@86] - Unable to start AdminServer, exiting abnormally
$AdminServerException: Problem starting AdminServer on address 0.0.0.0, port 8080 and command URL /commands
at (:194)
at (:155)
at (:113)
at (:68)
at (:141)
at (:91)
Caused by: : Failed to bind to /0.0.0.0:8080
at (:349)
at (:310)
at (:80)
at (:234)
at (:73)
at (:401)
at (:73)
at (:185)
... 5 common frames omitted
Caused by: : Address already in use
at .bind0(Native Method)
at (:433)
at (:425)
at (:223)
at (:74)
at (:344)
... 12 common frames omitted
Unable to start AdminServer, exiting abnormally
一眼看到 端口：8080我就嘀咕了下，难不成，zookeeper自己配启动容器了？找了下网上的资料发现，果真！zookeeper还真的自己搞了一个简易应用服务器。看一下zookeeper的lib目录，出现了一些jetty的jar，官方文档中也出现了关于Admin的配置项，
(Java system property: )
Set to "false" to disable the AdminServer. By default the AdminServer is enabled.
(Java system property: )
The port the embedded Jetty server listens on. Defaults to 8080.
(Java system property: )
The URL for listing and issuing commands relative to the root URL. Defaults to "/commands".
于是，我在中加了=8765
启动！
记录完毕，开搞微服务！