consul dns 轉發配置

 測試使用dnsmasq。

 優點：能夠方便的進行應該編碼，進行動態域名解析，容錯處理。

  由於consul 默認的dns 爲127.0.0.1 8600

 因此配置以下：

 文件目錄：

    
    
    
    
    

     
     
     
     
     

    
    
    
    
    
/etc/dnsmasq.d ### 目錄下

    
    
    
    
    

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

    
    
    
    
    
# Enable forward lookup of the 'consul' domain:server=/consul/127.0.0.1#8600# Uncomment and modify as appropriate to enable reverse DNS lookups for# common netblocks found in RFC 1918, 5735, and 6598:#rev-server=0.0.0.0/8,127.0.0.1#8600#rev-server=10.0.0.0/8,127.0.0.1#8600#rev-server=100.64.0.0/10,127.0.0.1#8600#rev-server=127.0.0.1/8,127.0.0.1#8600#rev-server=169.254.0.0/16,127.0.0.1#8600#rev-server=172.16.0.0/12,127.0.0.1#8600#rev-server=192.168.0.0/16,127.0.0.1#8600#rev-server=224.0.0.0/4,127.0.0.1#8600#rev-server=240.0.0.0/4,127.0.0.1#8600

一些額外的配置

    
    
    
    
    

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

     
     
     
     
     

    
    
    
    
    
# Accept DNS queries only from hosts whose address is on a local subnet.#local-service# Don't poll /etc/resolv.conf for changes.#no-poll# Don't read /etc/resolv.conf. Get upstream servers only from the command# line or the dnsmasq configuration file (see the "server" directive below).#no-resolv# Specify IP address(es) of other DNS servers for queries not handled# directly by consul. There is normally one 'server' entry set for every# 'nameserver' parameter found in '/etc/resolv.conf'. See dnsmasq(8)'s# 'server' configuration option for details.#server=1.2.3.4#server=208.67.222.222#server=8.8.8.8# Set the size of dnsmasq's cache. The default is 150 names. Setting the# cache size to zero disables caching.#cache-size=65536

nginx 作爲負載均使用的方式

使用nginx  的 resolver  

     
     
     
     
     

      
      
      
      
      

      
      
      
      
      

      
      
      
      
      

      
      
      
      
      

      
      
      
      
      

     
     
     
     
     
resolver 127.0.0.1:8600; set $backend "nginx.service.consul"; location / { proxy_pass http://$backend; }

詳細參考： https://www.consul.io/docs/guides/forwarding.html