gmqtt
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20 hours ago •
DrmagicE
DrmagicE
单节点启动，出现too many open files问题
客户端走websocket连接。
[yucuix@jgjapp-dev ~]$ sudo lsof -a -itcp -p 14723
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
bin 14723 root 3u IPv4 448738745 0t0 TCP localhost:ibm-mqisdp (LISTEN)
bin 14723 root 7u IPv6 448739940 0t0 TCP *:secure-mqtt (LISTEN)
bin 14723 root 8u IPv6 448739942 0t0 TCP *:us-cli (LISTEN)
bin 14723 root 10u IPv4 448740762 0t0 TCP localhost:8084 (LISTEN)
bin 14723 root 11u IPv4 448740763 0t0 TCP localhost:us-srv (LISTEN)
bin 14723 root 12u IPv4 448740342 0t0 TCP localhost:56224->localhost:14003 (ESTABLISHED)
bin 14723 root 16u IPv6 448782688 0t0 TCP localhost:secure-mqtt->localhost:50428 (ESTABLISHED)
bin 14723 root 20u IPv6 448783484 0t0 TCP localhost:secure-mqtt->localhost:50324 (ESTABLISHED)
bin 14723 root 21u IPv6 448781930 0t0 TCP localhost:secure-mqtt->localhost:50360 (ESTABLISHED)
bin 14723 root 30u IPv6 448780932 0t0 TCP localhost:secure-mqtt->localhost:50126 (ESTABLISHED)
bin 14723 root 31u IPv6 448778284 0t0 TCP localhost:secure-mqtt->localhost:49816 (CLOSE_WAIT)
bin 14723 root 32u IPv6 448779220 0t0 TCP localhost:secure-mqtt->localhost:50232 (ESTABLISHED)
bin 14723 root 33u IPv6 448782040 0t0 TCP localhost:secure-mqtt->localhost:50434 (ESTABLISHED)
端口连接看不出什么。开发环境下就几个连接，但是socket连接一直没释放断开的连接。
[root@jgjapp-dev fd]# ls /proc/31816/fd -l
总用量 0
lr-x------ 1 root root 64 8月 2 14:24 0 -> /dev/null
lrwx------ 1 root root 64 8月 2 14:24 1 -> socket:[448738742]
lrwx------ 1 root root 64 8月 2 14:24 10 -> socket:[448740762]
lrwx------ 1 root root 64 8月 2 14:24 11 -> socket:[448740763]
lrwx------ 1 root root 64 8月 2 14:24 12 -> socket:[448740342]
lrwx------ 1 root root 64 8月 2 14:24 13 -> socket:[448768168]
lrwx------ 1 root root 64 8月 2 14:24 14 -> socket:[448742405]
lrwx------ 1 root root 64 8月 2 14:24 15 -> socket:[448750807]
lrwx------ 1 root root 64 8月 2 14:24 16 -> socket:[448800654]
lrwx------ 1 root root 64 8月 2 14:24 17 -> socket:[448743237]
lrwx------ 1 root root 64 8月 2 14:24 18 -> socket:[448743240]
lrwx------ 1 root root 64 8月 2 14:24 19 -> socket:[448743301]
lrwx------ 1 root root 64 8月 2 14:24 2 -> socket:[448738742]
lrwx------ 1 root root 64 8月 2 14:24 20 -> socket:[448817234]
lrwx------ 1 root root 64 8月 2 14:24 21 -> socket:[448816826]
lrwx------ 1 root root 64 8月 2 14:24 22 -> socket:[448754806]
lrwx------ 1 root root 64 8月 2 14:24 23 -> socket:[448753159]
lrwx------ 1 root root 64 8月 2 14:24 24 -> socket:[448756526]
lrwx------ 1 root root 64 8月 2 14:24 25 -> socket:[448761346]
lrwx------ 1 root root 64 8月 2 14:24 26 -> socket:[448761448]
lrwx------ 1 root root 64 8月 2 14:24 27 -> socket:[448768765]
lrwx------ 1 root root 64 8月 2 14:24 28 -> socket:[448769909]
lrwx------ 1 root root 64 8月 2 14:24 29 -> socket:[448775662]
.........
lrwx------ 1 root root 64 8月 3 10:22 99 -> socket:[449476728]
lrwx------ 1 root root 64 8月 3 10:22 990 -> socket:[451674604]
lrwx------ 1 root root 64 8月 3 10:22 991 -> socket:[451679321]
lrwx------ 1 root root 64 8月 3 10:22 992 -> socket:[451676686]
lrwx------ 1 root root 64 8月 3 10:22 993 -> socket:[451682537]
lrwx------ 1 root root 64 8月 3 10:22 994 -> socket:[451680602]
lrwx------ 1 root root 64 8月 3 10:22 995 -> socket:[451682682]
lrwx------ 1 root root 64 8月 3 10:22 996 -> socket:[451684764]
lrwx------ 1 root root 64 8月 3 10:22 997 -> socket:[451695183]
lrwx------ 1 root root 64 8月 3 10:22 998 -> socket:[451686259]
lrwx------ 1 root root 64 8月 3 10:22 999 -> socket:[451686262]
可能是有bug导致连接没有释放，可以观察一下监控数据看看有没有什么端倪。（要打开Prometheus插件，默认是开的）
curl 127.0.0.1:8082/metrics
comqtt support the distributed cluster.If you are interested, please refer to https://github.com/wind-c/comqtt. Sorry, gmqtt is also great.
comqtt support the distributed cluster.If you are interested, please refer to https://github.com/wind-c/comqtt. Sorry, gmqtt is also great.
@mxyue 有可能是鉴权失败，客户端不断开连接。导致连接开太多了。可以试一下按照这个comment先加一行能不能解决 https://github.com/DrmagicE/gmqtt/issues/177#issuecomment-1295829118