Nacos集群搭建

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# 安装java1.8
yum list java* --showduplicate | sort -r
yum install -y java-1.8.0-openjdk-devel.x86_64
java -version  #查看java版本

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# 安装mysql 5.7.43
rpm -ivh https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
sed -i 's/gpgcheck=1/gpgcheck=0/' /etc/yum.repos.d/mysql-community.repo
yum -y install mysql-community-server
systemctl enable --now mysqld
password=`sed -n '/temporary password/s/.*root@localhost: \(.*\)/\1/p' /var/log/mysqld.log`
mysql -uroot -p"$password" --connect-expired-password -e"set global validate_password_policy=0;"
mysql -uroot -p"$password" --connect-expired-password -e"set global validate_password_length=6;"
mysql -uroot -p"$password" --connect-expired-password -e"alter user 'root'@'localhost' identified by '123456';"

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# 将nacos解压到/usr/local/目录下
tar xf nacos-server-2.2.3.tar.gz -C /usr/local/

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# 提前将nacos数据sql文件复制到本机的/tmp目录下，sql文件在nacos安装目录的conf目录下：/usr/local/nacos/conf/
mysql -uroot -p123456
create database nacos_config default character set utf8;
create user 'nacos'@'%' identified by '123456';  #演示用，生产请保证密码复杂度
grant all privileges on nacos_config.* to 'nacos'@'%';
flush privileges;
use nacos_config;
source /tmp/mysql-schema.sql;  #执行nacos数据库脚本
show tables;  #查看创建的表

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vim /usr/local/nacos/conf/application.properties
spring.sql.init.platform=mysql
db.num=1
db.url.0=jdbc:mysql://10.0.0.13:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
db.user.0=nacos
db.password.0=123456
management.endpoints.web.exposure.include=prometheus  #开启prometheus监控
nacos.core.auth.enabled=true  #开启权限认证
nacos.core.auth.system.type=nacos
nacos.core.auth.plugin.nacos.token.secret.key=${自定义，保证所有节点一致}
nacos.core.auth.server.identity.key=${自定义，保证所有节点一致}
nacos.core.auth.server.identity.value=${自定义，保证所有节点一致}

cd /usr/local/nacos/conf/
cp -a cluster.conf.example cluster.conf
vim cluster.conf
10.0.0.10:8848
10.0.0.11:8848
10.0.0.12:8848

# 将配置文件复制到另外两个主机
scp /usr/local/nacos/conf/application.properties 10.0.0.11:/usr/local/nacos/conf/
scp /usr/local/nacos/conf/cluster.conf 10.0.0.11:/usr/local/nacos/conf/
scp /usr/local/nacos/conf/application.properties 10.0.0.12:/usr/local/nacos/conf/
scp /usr/local/nacos/conf/cluster.conf 10.0.0.11:/usr/local/nacos/conf/

# 依次启动三台服务器上的nacos
sh /usr/local/nacos/bin/startup.sh
tail -f /usr/local/nacos/logs/start.out  #查看启动日志，如果日志最后显示如下，则成功
...
2023-08-19 15:55:33,901 INFO Nacos started successfully in cluster mode. use external storage

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upstream nacos-cluster {
        server 10.0.0.9:8848;
        server 10.0.0.10:8848;
        server 10.0.0.12:8848;
}

server {
    listen       80;
    server_name  www.nacos.com;

    #access_log  /var/log/nginx/host.access.log  main;

    location / {
         #root   html;
         #index  index.html index.htm;
         proxy_pass http://nacos-cluster/nacos/;  #'/'斜杠不能去掉
    }
}