Nacos注册中心高可用集群搭建及开机启动

服务器规划:

本次搭建一个使用了3台机器

主机	ip地址	内存
centoshadoop2	192.168.227.141	8G
centoshadoop3	192.168.227.142	8G
centoshadoop4	192.168.227.143	8G

（一）官网下载源码包

  https://github.com/alibaba/nacos/releases

  https://github.com/alibaba/nacos/releases/download/1.2.1/nacos-server-1.2.1.tar.gz

创建目录dubbo-nacos目录，我们将nacos安装在该目录

[hadoop@centoshadoop4 tools]$ mkdir -p  ~/dubbo-nacos

解压nacos-server-1.2.1.tar.gz 到dubbo-nacos目录

[hadoop@centoshadoop4 tools]$ tar -zxvf nacos-server-1.2.1.tar.gz -C ~/dubbo-nacos

nacos/LICENSE

nacos/NOTICE

nacos/target/nacos-server.jar

nacos/conf/

nacos/conf/schema.sql

nacos/conf/nacos-mysql.sql   # MySQL数据库脚本文件,Nacos支持Derby和MySQL两种持久化机制,默认采用Derby数据库,如果采用MySQL，需要运行该脚本创建数据库和表

nacos/conf/application.properties.example

nacos/conf/nacos-logback.xml   # Nacos日志配置文件

nacos/conf/cluster.conf.example # 集群配置样例配置文件

nacos/conf/application.properties   # SpringBoot 项目默认的配置文件

nacos/bin/startup.sh

nacos/bin/startup.cmd

nacos/bin/shutdown.sh

nacos/bin/shutdown.cmd

进入安装目录

[hadoop@centoshadoop4 tools]$ cd ~/dubbo-nacos

[hadoop@centoshadoop4 dubbo-nacos]$ ll

总用量 0

drwxrwxr-x. 5 hadoop hadoop 67 5月   6 22:17 nacos

[hadoop@centoshadoop4 dubbo-nacos]$ pwd

/home/hadoop/dubbo-nacos

(二)修改配置文件:

（1）配置nacos集群 cluster.conf

[hadoop@centoshadoop4 conf]$ cp cluster.conf.example cluster.conf

vi cluster.conf

centoshadoop4:8848
centoshadoop3:8848
centoshadoop2:8848

（2）配置mysql数据库：application.properties,增加mysql的配置

### If user MySQL as datasource:
spring.datasource.platform=mysql

### Count of DB:
db.num=1

### Connect URL of DB:
db.url.0=jdbc:mysql://192.168.227.136:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=root
db.password=123456

（3）执行nacos-mysql.sql初始化

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| hdfs_hive          |
| hive_db            |
| log_analysis       |
| mysql              |
| performance_schema |
| spark_db           |
| sys                |
+--------------------+
8 rows in set (0.06 sec)

创建数据库 nacos_config

mysql> create database nacos;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| hdfs_hive          |
| hive_db            |
| log_analysis       |
| mysql              |
| nacos      |
| performance_schema |
| spark_db           |
| sys                |
+--------------------+
9 rows in set (0.00 sec)

远程拷贝nacos-mysql.sql文件到mysql安装机器

[hadoop@centosnode01 ~]$ scp -r -P 22 hadoop@centoshadoop4:/home/hadoop/dubbo-nacos/nacos/conf/nacos-mysql.sql   ~/tools/

执行数据库脚本文件:

mysql> use nacos;
Database changed
mysql> source ~/tools/nacos-mysql.sql ;
Query OK, 0 rows affected (0.04 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.02 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.02 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.02 sec)

Query OK, 1 row affected (0.08 sec)

Query OK, 1 row affected (0.00 sec)

 

(三)分发nacos安装文件到其他节点：

[hadoop@centoshadoop4 ~]$ cd ~

[hadoop@centoshadoop4 ~]$ scp -r dubbo-nacos/  hadoop@centoshadoop3:~/ 

[hadoop@centoshadoop4 ~]$ scp -r dubbo-nacos/  hadoop@centoshadoop2:~/ 

==============制作启动脚本,设置开机启动==============

vi /usr/lib/systemd/system/nacos.service

[Unit]
Description=NacosServer
After=network.target

[Service]
Type=forking
Environment=JAVA_HOME=/usr/local/java/jdk1.8.0_192
ExecStart=/home/hadoop/dubbo-nacos/nacos/bin/startup.sh -m standalone
ExecReload=/home/hadoop/dubbo-nacos/nacos/bin/shutdown.sh
ExecStop=/home/hadoop/dubbo-nacos/nacos/bin/shutdown.sh
PrivateTmp=true

[Install]
WantedBy=multi-user.target

重新加载信息

systemctl daemon-reload

设置开机启动

systemctl enable nacos.service

systemctl start | stop | status nacos 

===========制作启动脚本,设置开机启动================

（四）分别进入三台机器的bin目录，执行sh startup.sh 命令启动服务

[hadoop@centoshadoop4 ~]$ cd dubbo-nacos/nacos/bin
[hadoop@centoshadoop4 bin]$ ll
总用量 20
-rwxr-xr-x. 1 hadoop hadoop  954 4月   8 2019 shutdown.cmd
-rwxr-xr-x. 1 hadoop hadoop  949 4月  28 14:10 shutdown.sh
-rwxr-xr-x. 1 hadoop hadoop 2836 4月  30 16:00 startup.cmd
-rwxr-xr-x. 1 hadoop hadoop 4730 4月  30 16:00 startup.sh
[hadoop@centoshadoop4 bin]$ sh startup.sh
/usr/local/java/jdk1.8.0_192/bin/java  -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/hadoop/dubbo-nacos/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Djava.ext.dirs=/usr/local/java/jdk1.8.0_192/jre/lib/ext:/usr/local/java/jdk1.8.0_192/lib/ext -Xloggc:/home/hadoop/dubbo-nacos/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dloader.path=/home/hadoop/dubbo-nacos/nacos/plugins/health,/home/hadoop/dubbo-nacos/nacos/plugins/cmdb,/home/hadoop/dubbo-nacos/nacos/plugins/mysql -Dnacos.home=/home/hadoop/dubbo-nacos/nacos -jar /home/hadoop/dubbo-nacos/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/home/hadoop/dubbo-nacos/nacos/conf/ --logging.config=/home/hadoop/dubbo-nacos/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
nacos is starting with cluster
nacos is starting，you can check the /home/hadoop/dubbo-nacos/nacos/logs/start.out
[hadoop@centoshadoop4 bin]$ ssh centoshadoop3
Last login: Tue May  5 21:21:27 2020
[hadoop@centoshadoop3 ~]$ cd dubbo-nacos/nacos/bin
[hadoop@centoshadoop3 bin]$ sh startup.sh
/home/hadoop/java/jdk1.8.0_192/bin/java  -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/hadoop/dubbo-nacos/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Djava.ext.dirs=/home/hadoop/java/jdk1.8.0_192/jre/lib/ext:/home/hadoop/java/jdk1.8.0_192/lib/ext -Xloggc:/home/hadoop/dubbo-nacos/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dloader.path=/home/hadoop/dubbo-nacos/nacos/plugins/health,/home/hadoop/dubbo-nacos/nacos/plugins/cmdb,/home/hadoop/dubbo-nacos/nacos/plugins/mysql -Dnacos.home=/home/hadoop/dubbo-nacos/nacos -jar /home/hadoop/dubbo-nacos/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/home/hadoop/dubbo-nacos/nacos/conf/ --logging.config=/home/hadoop/dubbo-nacos/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
nacos is starting with cluster
nacos is starting，you can check the /home/hadoop/dubbo-nacos/nacos/logs/start.out
[hadoop@centoshadoop3 bin]$ ssh centoshadoop2
Last login: Thu Apr 23 22:37:37 2020
[hadoop@centoshadoop2 ~]$ cd dubbo-nacos/nacos/bin
[hadoop@centoshadoop2 bin]$ sh startup.sh
/home/hadoop/java/jdk1.8.0_192/bin/java  -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmitStackTraceInFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/hadoop/dubbo-nacos/nacos/logs/java_heapdump.hprof -XX:-UseLargePages -Djava.ext.dirs=/home/hadoop/java/jdk1.8.0_192/jre/lib/ext:/home/hadoop/java/jdk1.8.0_192/lib/ext -Xloggc:/home/hadoop/dubbo-nacos/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dloader.path=/home/hadoop/dubbo-nacos/nacos/plugins/health,/home/hadoop/dubbo-nacos/nacos/plugins/cmdb,/home/hadoop/dubbo-nacos/nacos/plugins/mysql -Dnacos.home=/home/hadoop/dubbo-nacos/nacos -jar /home/hadoop/dubbo-nacos/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/home/hadoop/dubbo-nacos/nacos/conf/ --logging.config=/home/hadoop/dubbo-nacos/nacos/conf/nacos-logback.xml --server.max-http-header-size=524288
nacos is starting with cluster
nacos is starting，you can check the /home/hadoop/dubbo-nacos/nacos/logs/start.out

 

查看日志：

[hadoop@centoshadoop3 bin]$ tail -f /home/hadoop/dubbo-nacos/nacos/logs/start.out
2020-05-06 23:38:59,293 INFO Nacos is starting...

2020-05-06 23:38:59,744 INFO Nacos logs files: /home/hadoop/dubbo-nacos/nacos/logs/

2020-05-06 23:38:59,744 INFO Nacos conf files: /home/hadoop/dubbo-nacos/nacos/conf/

2020-05-06 23:38:59,744 INFO Nacos data files: /home/hadoop/dubbo-nacos/nacos/data/

2020-05-06 23:38:59,744 INFO Nacos started successfully in cluster mode.
 

访问http://centoshadoop4:8848/nacos/ 地址

输入nacos/nacos登录

无显示节点信息,排查及解决方案

https://blog.csdn.net/ooyhao/article/details/102745641

 

https://www.cnblogs.com/larscheng/p/11427733.html

 

centoshadoop4:8848 集群界面的列表节点信息不能显示,必须配置为本机的IP