Zookeeper的启动验证 JMX enabled by default Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cf

1 ）四字命令

在 Zookeeper 服务器成功启动的前提下，在 Linux 侧的 shell 命令端口执行下面的 ruok 四字命令， 如果能够显示

imok ，表示 zk 服务器端成功启动。

使用四字命令：

echo ruok | nc 127.0.0.1 2181

启动报错误：

[root@Hadoop ~]# zook
JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@Hadoop ~]#  cd   /opt/modules/zookeeper-3.4.5/bin
[root@Hadoop bin]# ./zkServer.sh  status
JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.
[root@Hadoop bin]#

解决办法 ：

[root@Hadoop bin]# cd  ../zkData/

[root@Hadoop zkData]# ls

my.id  zookeeper_server.pid

[root@Hadoop zkData]# cat  my.id 

1

[root@Hadoop zkData]# vi  my.id 

[root@Hadoop zkData]# cd  ./bin

-bash: cd: ./bin: No such file or directory

[root@Hadoop zkData]# cd  ..

[root@Hadoop zookeeper-3.4.5]# cd  bin

[root@Hadoop bin]# ./zkServer.sh  stop

JMX enabled by default

Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg

Stopping zookeeper ... ./zkServer.sh: line 143: kill: (2605) - No such process

STOPPED

[root@Hadoop zkData]# ls

my.id  zookeeper_server.pid

[root@Hadoop zkData]# rm  -rf zookeeper_server.pid 

[root@Hadoop zkData]# cat  my.id 

1

[root@Hadoop zkData]# cd ../bin

[root@Hadoop bin]# ./zkServer.sh start

JMX enabled by default

Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED

[root@Hadoop bin]# ./zkServer.sh status

主要需要查询日志然后才可以进行启动哦：

操作步骤在bin的下面查询。out日志

[root@Hadoop zkData]# cd ../bin
[root@Hadoop bin]# ./zkServer.sh start
JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@Hadoop bin]# ./zkServer.sh status
JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.
[root@Hadoop bin]# ls
README.txt  zkCleanup.sh  zkCli.cmd  zkCli.sh  zkEnv.cmd  zkEnv.sh  zkServer.cmd  zkServer.sh  zookeeper.out
[root@Hadoop bin]# tail  -f  zookeeper.out 
2020-02-28 23:04:41,337 [myid:] - ERROR [main:QuorumPeerMain@85] - Invalid config, exiting abnormally
org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error processing /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
  at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:121)
  at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:101)
  at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
Caused by: java.lang.IllegalArgumentException: /opt/modules/zookeeper-3.4.5/zkData/myid file is missing
  at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:344)
  at org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:117)
  ... 2 more
Invalid config, exiting abnormally
^C
[root@Hadoop bin]# cd  ../zkData/
[root@Hadoop zkData]# ls
my.id  zookeeper_server.pid
[root@Hadoop zkData]# mv  my.id myid
[root@Hadoop zkData]# ls
myid  zookeeper_server.pid
[root@Hadoop zkData]# zook
JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@Hadoop zkData]#

然后查询状态，就是启动正常：

[root@Hadoop ~]#   cd  /opt/modules/zookeeper-3.4.5/bin
[root@Hadoop bin]# ./zkServer.sh  status
JMX enabled by default
Using config: /opt/modules/zookeeper-3.4.5/bin/../conf/zoo.cfg
Mode: follower
[root@Hadoop bin]#