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DNS负载均衡，客户端无效 #19

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myml opened this issue Oct 10, 2018 · 0 comments
Open

DNS负载均衡，客户端无效 #19

myml opened this issue Oct 10, 2018 · 0 comments
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myml commented Oct 10, 2018 •
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dns同一A记录指向不同IP，可实现简单的dns负载均衡，最近发现在linux上用ping总返回同一个IP，原因是为了支持IPv6,新版本glibc新增getaddrinfo函数，用来替代gethostbyname进行域名IP查询。getaddrinfo会依照rfc3484对IP进行排序。简单的解决办法是禁用IPv6

echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6
echo net.ipv6.conf.all.disable_ipv6 = 1 >> /etc/sysctl.conf
@myml myml added the net label Apr 3, 2020
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