takakawa

there is no coredump file,so I debuged nginx and found: ``` Program received signal SIGSEGV, Segmentation fault. ngx_http_vhost_traffic_status_display_set_upstream_group (r=r@entry=0xae6b90, buf=0x7fffd16960ac "", buf@entry=0x7fffd168949a "\"abtest_lb_core\":[{\"server\":\"10.191.161.129:18223\",\"requestCounter\":0,\"inBytes\":0,\"outBytes\":0,\"responses\":{\"1xx\":0,\"2xx\":0,\"3xx\":0,\"4xx\":0,\"5xx\":0},\"requestMsecCounter\":0,\"requestMsec\":0,\"requestMsec"...) at ../modules/nginx-module-vts-0.1.18/src/ngx_http_vhost_traffic_status_display_json.c:622 622 p = ngx_cpymem(p, us[j].addrs->name.data,...

I have the same problems too!

发现Log在狂打： 2018/03/19 18:36:43 +572 [notice] fd is null after session is created 2018/03/19 18:36:43 +572 [notice] from bak:10.9.168.160:22-->10.9.97.233:35996,len 464,seq=554908419,ack=2198453042 2018/03/19 18:36:43 +572 [notice] fd is null after session is created...

我试一下双ip方案，没有成功，求解是哪里配的不对？ 线上机器tcpcopy配置一切正常，被测机新加一个ip，如2.2.2.2，使用tcpcopy时指定-c为2.2.2.2,被测机上只能收到syn包，但是无ack，把-c改为其它ip一切恢复正常，为什么呢？

Same here in 4.19.110-300.el7.x86_64 Unable to direct monitor iptables command , because is symlinked. ``` /usr/sbin/iptables -> xtables-multi ```