Determine What Cron Jobs Are Killing Server And When
We're running on Linux/Apache/MySQL/RoR and have a number of cron jobs that run throughout the day on our server. We've been noticing lately that at certain times of the day the site becomes really slow. When I'm online with my engineers I can mention this to them and they can check and see and say "Oh yeah, it's job XYZ that's spiking the server load."
That's great but much of the time when I notice the sluggishness my developers are offline (we're in different time zones). I'm wondering if there's a fairly easy way to track this when they're not online so we can say "Yup, last night at 10 PM your time when you noticed that it was job ABC." There has to be something that allows you to do this right?
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0.0.0.0/0 state NEW tcp dpt:25 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:53 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:110 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:113 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:443 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:953 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:10023 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:9999 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:20 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:21 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:53 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:113 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:123 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:953 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 state NEW icmp type 8 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp spt:53 dpt:53 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:53 dpt:53 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp spts:1024:65535 dpt:53 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spts:1024:65535 dpt:53 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp spt:53 dpts:1024:65535 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:53 dpts:1024:65535 LOGDROPOUT all -- 0.0.0.0/0 0.0.0.0/0 Chain INVDROP (18 references) target prot opt source destination DROP all -- 0.0.0.0/0 0.0.0.0/0 Chain LOGDROPIN (1 references) target prot opt source destination DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:67 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:68 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:111 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:111 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:113 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:113 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpts:135:139 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpts:135:139 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:445 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:513 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