Nginx DNS resolver配置实例
nginx通过proxy_pass和upstreamserver通信的时候需要手动指定resolver。某些时候DNS解析失败就会出现这个错误:
domain.comcouldnotberesolved.
可以指定多个DNS并重置域名TTL延长nginx解析缓存来保障解析成功率:
resolver223.5.5.5223.6.6.61.2.4.8114.114.114.114valid=3600s;
如果还有解析错误,可以用dnsmasq在本地自建DNS,顺带还有加速解析的好处:
#/etc/dnsmasq.conf domain-needed bogus-priv cache-size=51200 listen-address=127.0.0.1
#server=223.5.5.5 resolv-file=/etc/resolv.conf