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This topic created in 2560 days ago, the information mentioned may be changed or developed.
# curl http://10.2.176.14:30980/h5/intro curl: (7) Failed connect to 10.2.176.14:30980; 连接超时 # curl http://10.2.176.14:30980/h5/intro <!DOCTYPE html> <html lang="zh-cn"> <head> <meta charset="UTF-8"> <meta name="viewport" cOntent="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" /> <meta name="format-detection" cOntent="telephOne=no"> 虽然是偶发现象，但是本身访问量就不大，所以出现的概率还挺高的。 docker 容器内是一个 nginx+tomcat。 观察了 1 天了，不知道啥毛病。 ipv4 的 tcp 的连接参数已经改了。
/etc/sysctl.conf
net.ipv4.ip_local_port_range = 1024 65535 net.core.rmem_max=16777216 net.core.wmem_max=16777216 net.ipv4.tcp_rmem=4096 87380 16777216 net.ipv4.tcp_wmem=4096 65536 16777216 net.ipv4.tcp_fin_timeout = 10 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_timestamps = 1 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_sack = 0 net.core.netdev_max_backlog = 30000 net.ipv4.tcp_no_metrics_save=1 net.core.somaxcOnn= 26214 net.ipv4.tcp_syncookies = 0 net.ipv4.tcp_max_orphans = 262144 net.ipv4.tcp_max_syn_backlog = 262144 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 2 vm.overcommit_memory = 1 4 replies 2019-05-14 15:20:25 +08:00
 | 1 julyclyde Apr 26, 2019 那如果没用 docker、甚至没用 nginx，同样的 tomcat 会怎样呢？ |
 | 2 kingfsen Apr 26, 2019 docker-proxy 代理进程处理太慢？ 还是 docker 容器内部应用处理能力不行？ 服务器资源不足？ |
 | 3 zktz OP 从容器内部来看，响应不慢啊。 |
 | 4 kkxxxxxxx May 14, 2019 上次碰到这种情况是在这个镜像上 nimmis/alpine-apache-php5，至今也没搞懂 |
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