51工具盒子一、Nacos 简介
Nacos 致力于帮助您发现、配置和管理微服务。Nacos 提供了一组简单易用的特性集，帮助您快速实现动态服务发现、服务配置、服务元数据及流量管理。Nacos 帮助您更敏捷和容易地构建、交付和管理微服务平台。 Nacos 是构建以"服务"为中心的现代应用架构 (例如微服务范式、云原生范式) 的服务基础设施。
nacos官网：https://nacos.io/zh-cn/docs/what-is-nacos.html
二、Nacos 安装
2.1 Nacos 环境依赖
Nacos 基于 java 开发的，运行依赖于64 bit JDK 1.8+环境。
前往官网下载JDK: Java Downloads | Oracle
2.2 Nacos 服务端安装
由于Nacos是开源的，可以从github下载源码编译后安装，也可以直接从github下载官方编译好的安装包进行安装，本文直接使用官方编译好的包进行安装，基于目前官方最新release2.0.3版本。请勿使用2.x以下的版本，之前爆出过漏洞。2.x版本相对于1.x版本，性能也提升了10倍。
下载地址：https://github.com/alibaba/nacos/releases
三、Nacos 部署
3.1 集群部署
3.2.1 集群架构
● 高可用 Nginx 集群
● Nacos 集群（至少三个实例）
● 高可用数据库集群（取代 Nacos 内嵌数据库）
3.2.2 模拟部署
| 系统版本 | 机器IP | 部署应用版本 | |-----------|-------------|-------------| | centos7.9 | 192.168.1.1 | mysql 5.7 | | centos7.9 | 192.168.1.1 | nacos 2.0.3 | | centos7.9 | 192.168.1.1 | nacos 2.0.3 | | centos7.9 | 192.168.1.1 | nacos 2.0.3 |
四、搭建步骤
1、mysql单点部署
[root@tiejiang.org ~] cd /vdb/
[root@tiejiang.org vdb] mkdir src
[root@tiejiang.org vdb] wget https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.37-linux-glibc2.12-x86_64.tar.gz
[root@tiejiang.org vdb] yum install libaio -y
-- 添加mysql用户
[root@tiejiang.org vdb] groupadd mysql
[root@tiejiang.org vdb] useradd -r -g mysql mysql
[root@tiejiang.org vdb] tar zxvf mysql-5.7.37-linux-glibc2.12-x86_64.tar.gz
[root@tiejiang.org vdb] mv mysql-5.7.37-linux-glibc2.12-x86_64 /usr/local/mysql
[root@tiejiang.org vdb] cd /usr/local/mysql/;
[root@tiejiang.org mysql] mkdir /vdb/mysql;
[root@tiejiang.org mysql] mkdir /vdb/mysql/data;
[root@tiejiang.org mysql] mkdir /vdb/mysql/binlog
[root@tiejiang.org mysql] mkdir /vdb/mysql/relaylog;
[root@tiejiang.org mysql] mkdir /vdb/mysql/log
[root@tiejiang.org mysql] mkdir /vdb/mysql/run
[root@tiejiang.org mysql] mkdir /tmp/mysql;
[root@tiejiang.org mysql] touch /vdb/mysql/log/mysql.err
[root@tiejiang.org mysql] chown -R mysql.mysql /vdb/mysql;
[root@tiejiang.org mysql] chown -R mysql.mysql /tmp/mysql;
[root@tiejiang.org mysql] rm -rf /usr/local/mysql/data;
[root@tiejiang.org mysql] ln -s /vdb/mysql/data data;
[root@tiejiang.org mysql] cd support-files/;
[root@tiejiang.org support-files] cp mysql.server /etc/init.d/mysqld;
[root@tiejiang.org support-files] chmod 755 /etc/init.d/mysqld;
去修改my.conf的配置文件，把下面的conf文件内容放进去。
[root@tiejiang.org support-files] vim /etc/my.conf
[mysql]
port = 3306
default_character_set = utf8mb4
socket = /vdb/mysql/run/mysql.socket
[mysqld]
log_slave_updates = 1
lower_case_table_names=1
# disable auto start slave and need to start slave by mual
skip_slave_start
#read_only = 1
# charset
character_set_server = utf8mb4
# server
max_connections = 1000
max_connect_errors = 99999
max_allowed_packet = 1000M
net_buffer_length = 16K
skip_name_resolve
skip_external_locking
back_log = 150
query_cache_size = 0
query_cache_type = 0
basedir = /usr/local/mysql
datadir = /vdb/mysql/data
port = 3306
server_id = 12855
socket = /vdb/mysql/run/mysql.socket
pid_file = /vdb/mysql/run/mysql.pid
log_error = /vdb/mysql/log/mysql.err
explicit_defaults_for_timestamp = 1
binlog
log_bin = mysql-bin
binlog_row_image = full
log_bin_index = /vdb/mysql/data/mysql-bin.index
binlog_format = MIXED
expire_logs_days = 1
sync_binlog = 1000
slowlog
slow_query_log = 1
slow_query_log_file = /vdb/mysql/log/slow.log
long_query_time = 1
binlog_rows_query_log_events = 1
master & relay record method
master_info_repository = table
relay_log_info_repository = table
relay_log_recovery = 1
slave_net_timeout = 20
aviod to duplicate in the double master
#auto_increment_increment=2
#auto_increment_offset=2
session conn
binlog_cache_size = 32M
thread_stack = 512K217
join_buffer_size = 512K
sort_buffer_size = 256K
read_buffer_size = 512K
read_rnd_buffer_size = 256K
tmp_table_size = 64M
max_heap_table_size = 64M
bulk_insert_buffer_size = 1M
Global share memory
table_definition_cache = 400
table_open_cache = 400
thread_cache_size = 512
event
event_scheduler = 1
innodb
innodb_data_home_dir = /vdb/mysql/data
innodb_data_file_path = ibdata1:1000M:autoextend
innodb_file_per_table = 1
innodb_log_group_home_dir = /vdb/mysql/data
innodb_log_files_in_group = 3
innodb_log_buffer_size = 16M
innodb_log_file_size = 256M
innodb_flush_log_at_trx_commit = 2
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_buffer_pool_size = 20000M //一般设置内存的一半
#innodb_buffer_pool_dump_at_shutdown = 1
#innodb_buffer_pool_dump_now = 1
#innodb_buffer_pool_load_at_startup = 1
#innodb_buffer_pool_load_now = 1
innodb_buffer_pool_instances = 8
innodb_flush_method = O_DIRECT
innodb_io_capacity = 600
innodb_lock_wait_timeout = 10
open_files_limit = 400
innodb_open_files = 400
innodb_purge_threads = 1
innodb_read_io_threads = 12
innodb_write_io_threads = 12
innodb_thread_concurrency = 24
MyISAM
key_buffer_size = 8M
myisam_sort_buffer_size = 128K
sql profiling
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[root@tiejiang.org support-files] mysqld --initialize --user=mysql //初始化mysql数据库
[root@tiejiang.org support-files] service mysqld start //启动mysql服务
[root@tiejiang.org support-files] cat /vdb/mysql/log/mysql.err | grep password //查看初始化后mysql的密码
//用初始化mysql后拿到的密码登录mysql，修改mysql的root密码 [root@tiejiang.org ~] mysql -uroot -palsgfasfa8s mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Liu180854'; mysql> exit;
2、nacos集群部署，3台机器都要操作
# 安装jdk环境
[root@tiejiang.org ~] yum -y remove java
[root@tiejiang.org ~] mkdir /opt/src
[root@tiejiang.org ~] wget -P /opt/src http://10.205.210.70/jdk/jdk-8u181-linux-x64.tar.gz
[root@tiejiang.org ~] tar -xzvf /opt/src/jdk-8u181-linux-x64.tar.gz -C /opt
[root@tiejiang.org ~] rm -rf /opt/java
[root@tiejiang.org ~] ln -sf /opt/jdk1.8.0_181 /opt/java
[root@tiejiang.org ~] echo 'export JAVA_HOME=/opt/java'>>/etc/profile
[root@tiejiang.org ~] echo 'export JAVA_BIN=$JAVA_HOME/bin'>>/etc/profile
[root@tiejiang.org ~] echo 'export JAVA_LIB=$JAVA_HOME/lib'>>/etc/profile
[root@tiejiang.org ~] echo 'export PATH=$JAVA_BIN:$PATH'>>/etc/profile
[root@tiejiang.org ~] source /etc/profile
[root@tiejiang.org ~] cd /usr/local/src/
[root@tiejiang.org src] wget https://github.com/alibaba/nacos/releases/download/2.0.3/nacos-server-2.0.3.tar.gz
[root@tiejiang.org src] tar -zxvf nacos-server-2.0.3.tar.gz
[root@tiejiang.org src] mv nacos /usr/local/nacos-2.0.3
[root@tiejiang.org src] PASSWORD=$(base64 < /dev/urandom | head -c8); echo "$PASSWORD"; echo -n "$PASSWORD" | sha256sum | tr -d '-'
#生成nacos需要用到的tocken
#生成的密码：f7me4Iel
#生成的秘钥，开nacos鉴权的时候配置文件需要：c7020a710bc550d27fbcdd2ed067cb27965f2de9aa7212f3e4fee8b272e09874
登陆mysql，创建nacos需要用到的nacos_config数据库和用户
[root@tiejiang.org src] mysql -uroot -palsgfasfa8s
mysql> create database nacos_config; //创建数据库
mysql> use nacos_config； //应用数据库
mysql> set names utf8; //设置字符集
mysql> CREATE USER 'nacos'@'%' IDENTIFIED BY 'Liu123456'; //创建一个nacos的用户，并将连接设置为远程
mysql> GRANT ALL PRIVILEGES ON nacos_config.* TO 'nacos'@'%'; //授权新用户访问nacos_config数据库的权限
mysql> FLUSH PRIVILEGES; //权限刷新
mysql> source /usr/local/nacos-2.0.3/conf/nacos-mysql.sql; //导入nacos的.sql文件
[root@tiejiang.org src] vim /usr/loacl/nacos-2.0.3/conf/application.properties
#在#*************** Config Module Related Configurations ***************# 下面新增jdbc连接mysql参数
spring.datasource.platform=mysql
db.num=1
db.url.0=jdbc:mysql://195.168.1.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
db.user.0=nacos
db.password.0=Liu123456
#nacos开启授权
nacos.core.auth.system.type=nacos
nacos.core.auth.enabled=true
#自定义秘钥，用于tocken
nacos.core.auth.default.token.secret.key=c7020a710bc550d27fbcdd2ed067cb27965f2de9aa7212f3e4fee8b272e09874 //上面命令生成的base64秘钥
[root@tiejiang.org ~] vim /usr/loacl/nacos-2.0.3/conf/cluster.conf 192.168.1.2:8848 192.168.1.3:8848 192.168.1.4:8848 [root@tiejiang.org ~] bash /usr/local/nacos-2.0.3/bin/startup.sh
3、登陆nacos后台配置
http://192.168.1.2:8848/nacos/index.html
http://192.168.1.3:8848/nacos/index.html
http://192.168.1.4:8848/nacos/index.html
去页面中创建一个nacos的用户，密码自定义。
4、测试
该命令的username和password是登录上面网页nacos后台创建的
[root@tiejiang.org ~] curl -X POST '192.168.1.2:8848/nacos/v1/auth/login' -d 'username=yunwei&password='yunwei123'
