Hi, we are running on 0.20.0 and scraping devices, which are not configured correctly (probably acl issue on switch side), produce these errors all the time. This device for example is a Cisco N7k.
``` level=info ts=2022-03-18T08:29:09.347Z caller=collector.go:224 module=pxdlrouternxos target=10.14.25.10 msg="Error scraping target" err="error getting target 10.14.25.10: recover: runtime error: invalid memory address or nil pointer dereference\nStack:goroutine 358625 [running]:\ngithub.com/gosnmp/gosnmp.(*GoSNMP).send.func1(0xc000e155c8)\n\t/go/pkg/mod/github.com/gosnmp/[email protected]/marshal.go:326 +0xa5\npanic(0x9e4880, 0xe89790)\n\t/usr/local/go/src/runtime/panic.go:969 +0x1b9\ngithub.com/gosnmp/gosnmp.(*GoSNMP).send(0xc0004f6c60, 0xc0004c42a0, 0xc0000de601, 0x0, 0xb34ee0, 0xc000b609c0)\n\t/go/pkg/mod/github.com/gosnmp/[email protected]/marshal.go:372 +0x20e\ngithub.com/gosnmp/gosnmp.(*GoSNMP).Get(0xc0004f6c60, 0xc00012e300, 0x6, 0x6, 0x0, 0x0, 0xc000522b10)\n\t/go/pkg/mod/github.com/gosnmp/[email protected]/gosnmp.go:363 +0x159\nmain.ScrapeTarget(0xb40660, 0xc0004b41c0, 0xc00045ca67, 0xe, 0xc000161770, 0xb34f40, 0xc000522840, 0x0, 0x0, 0x0, ...)\n\t/app/collector.go:133 +0x5be\nmain.collector.Collect(0xb40660, 0xc0004b41c0, 0xc00045ca67, 0xe, 0xc000161770, 0xb34f40, 0xc000522840, 0xc000281020)\n\t/app/collector.go:222 +0xbc\ngithub.com/prometheus/client_golang/prometheus.(*Registry).Gather.func1()\n\t/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:446 +0x1a2\ncreated by github.com/prometheus/client_golang/prometheus.(*Registry).Gather\n\t/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:457 +0x5ce\n\ngoroutine 1 [IO wait, 216 minutes]:\ninternal/poll.runtime_pollWait(0x7f0f18245708, 0x72, 0x0)\n\t/usr/local/go/src/runtime/netpoll.go:222 +0x55\ninternal/poll.(*pollDesc).wait(0xc0004c6018, 0x72, 0x0, 0x0, 0xa85b68)\n\t/usr/local/go/src/internal/poll/fd_poll_runtime.go:87 +0x45\ninternal/poll.(*pollDesc).waitRead(...)\n\t/usr/local/go/src/internal/poll/fd_poll_runtime.go:92\ninternal/poll.(*FD).Accept(0xc0004c6000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)\n\t/usr/local/go/src/internal/poll/fd_unix.go:394 +0x1fc\nnet.(*netFD).accept(0xc0004c6000, 0x1eadb908595c5b95, 0x0, 0x0)\n\t/usr/local/go/src/net/fd_unix.go:172 +0x45\nnet.(*TCPListener).accept(0xc0004a8300, 0x6234102b, 0xc00052dad0, 0x48e3a6)\n\t/usr/local/go/src/net/tcpsock_posix.go:139 +0x32\nnet.(*TCPListener).Accept(0xc0004a8300, 0xc00052db20, 0x18, 0xc000000180, 0x7f8dec)\n\t/usr/local/go/src/net/tcpsock.go:261 +0x65\nnet/http.(*Server).Serve(0xc0004c4000, 0xb3ee20, 0xc0004a8300, 0x0, 0x0)\n\t/usr/local/go/src/net/http/server.go:2937 +0x266\ngithub.com/prometheus/exporter-toolkit/web.Serve(0xb3ee20, 0xc0004a8300, 0xc0004c4000, 0x0, 0x0, 0xb34f40, 0xc000286420, 0x0, 0xe0)\n\t/go/pkg/mod/github.com/prometheus/[email protected]/web/tls_config.go:192 +0x1b0\ngithub.com/prometheus/exporter-toolkit/web.ListenAndServe(0xc0004c4000, 0x0, 0x0, 0xb34f40, 0xc000286420, 0x0, 0x0)\n\t/go/pkg/mod/github.com/prometheus/[email protected]/web/tls_config.go:184 +0xfd\nmain.main()\n\t/app/main.go:248 +0xb71\n\ngoroutine 45 [syscall, 3871 minutes]:\nos/signal.signal_recv(0x0)\n\t/usr/local/go/src/runtime/sigqueue.go:147 +0x9d\nos/signal.loop()\n\t/usr/local/go/src/os/signal/signal_unix.go:23 +0x25\ncreated by os/signal.Notify.func1.1\n\t/usr/local/go/src/os/signal/signal.go:150 +0x45\n\ngoroutine 46 [select, 3871 minutes]:\nmain.main.func1(0xc00012e360, 0xb34f40, 0xc000286420)\n\t/app/main.go:179 +0xe5\ncreated by main.main\n\t/app/main.go:177 +0x7ce\n\ngoroutine 50 [IO wait]:\ninternal/poll.runtime_pollWait(0x7f0f18245620, 0x72, 0xb36220)\n\t/usr/local/go/src/runtime/netpoll.go:222 +0x55\ninternal/poll.(*pollDesc).wait(0xc0004c6098, 0x72, 0xb36200, 0xe444f0, 0x0)\n\t/usr/local/go/src/internal/poll/fd_poll_runtime.go:87 +0x45\ninternal/poll.(*pollDesc).waitRead(...)\n\t/usr/local/go/src/internal/poll/fd_poll_runtime.go:92\ninternal/poll.(*FD).Read(0xc0004c6080, 0xc0004d8000, 0x1000, 0x1000, 0x0, 0x0, 0x0)\n\t/usr/local/go/src/internal/poll/fd_unix.go:159 +0x1a5\nnet.(*netFD).Read(0xc0004c6080, 0xc0004d8000, 0x1000, 0x1000, 0x92a41b, 0xc00052f7f8, 0x7f2b36)\n\t/usr/local/go/src/net/fd_posix.go:55 +0x4f\nnet.(*conn).Read(0xc0004ae050, 0xc0004d8000, 0x1000, 0x1000, 0x0, 0x0, 0x0)\n\t/usr/local/go/src/net/net.go:182 +0x8e\nnet/http.(*connReader).Read(0xc0004ac750, 0xc0004d8000, 0x1000, 0x1000, 0x10012864e, 0x0, 0x7f0f18281db8)\n\t/usr/local/go/src/net/http/server.go:798 +0x1ad\nbufio.(*Reader).fill(0xc0002806c0)\n\t/usr/local/go/src/bufio/bufio.go:101 +0x105\nbufio.(*Reader).ReadSlice(0xc0002806c0, 0xc00025460a, 0x7f0f18281db8, 0xc00052f988, 0x40d950, 0xc00022a100, 0x100)\n\t/usr/local/go/src/bufio/bufio.go:360 +0x3d\nbufio.(*Reader).ReadLine(0xc0002806c0, 0xc00022a100, 0x479294, 0xea09c0, 0x0, 0xa5b4c0, 0xc000730a80)\n\t/usr/local/go/src/bufio/bufio.go:389 +0x34\nnet/textproto.(*Reader).readLineSlice(0xc000730a80, 0xc00022a100, 0x4d788d, 0xc0004c6080, 0x467500, 0xc001bc3e00)\n\t/usr/local/go/src/net/textproto/reader.go:58 +0x6c\nnet/textproto.(*Reader).ReadLine(...)\n\t/usr/local/go/src/net/textproto/reader.go:39\nnet/http.readRequest(0xc0002806c0, 0x0, 0xc00022a100, 0x0, 0x0)\n\t/usr/local/go/src/net/http/request.go:1012 +0xaa\nnet/http.(*conn).readRequest(0xc00024c0a0, 0xb40660, 0xc0004b4180, 0x0, 0x0, 0x0)\n\t/usr/local/go/src/net/http/server.go:984 +0x19a\nnet/http.(*conn).serve(0xc00024c0a0, 0xb40660, 0xc0004b4180)\n\t/usr/local/go/src/net/http/server.go:1851 +0x705\ncreated by net/http.(*Server).Serve\n\t/usr/local/go/src/net/http/server.go:2969 +0x36c\n\ngoroutine 358626 [semacquire]:\nsync.runtime_Semacquire(0xc000880838)\n\t/usr/local/go/src/runtime/sema.go:56 +0x45\nsync.(*WaitGroup).Wait(0xc000880830)\n\t/usr/local/go/src/sync/waitgroup.go:130 +0x65\ngithub.com/prometheus/client_golang/prometheus.(*Registry).Gather.func2(0xc000880830, 0xc000281020, 0xc000281080)\n\t/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:463 +0x2b\ncreated by github.com/prometheus/client_golang/prometheus.(*Registry).Gather\n\t/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:462 +0x60d\n\ngoroutine 201493 [select]:\ngithub.com/prometheus/client_golang/prometheus.(*Registry).Gather(0xc00041a2d0, 0x0, 0x0, 0x0, 0x0, 0x0)\n\t/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:513 +0xbbc\ngithub.com/prometheus/client_golang/prometheus/promhttp.HandlerFor.func1(0xb3f0a0, 0xc0004c41c0, 0xc00022a000)\n\t/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/promhttp/http.go:126 +0x99\nnet/http.HandlerFunc.ServeHTTP(0xc0004edc70, 0xb3f0a0, 0xc0004c41c0, 0xc00022a000)\n\t/usr/local/go/src/net/http/server.go:2042 +0x44\nmain.handler(0xb3f0a0, 0xc0004c41c0, 0xc00022a000, 0xb34f40, 0xc000286420)\n\t/app/main.go:110 +0x6d7\nmain.main.func2(0xb3f0a0, 0xc0004c41c0, 0xc00022a000)\n\t/app/main.go:201 +0x51\nnet/http.HandlerFunc.ServeHTTP(0xc0004a82a0, 0xb3f0a0, 0xc0004c41c0, 0xc00022a000)\n\t/usr/local/go/src/net/http/server.go:2042 +0x44\nnet/http.(*ServeMux).ServeHTTP(0xea0040, 0xb3f0a0, 0xc0004c41c0, 0xc00022a000)\n\t/usr/local/go/src/net/http/server.go:2417 +0x1ad\nnet/http.serverHandler.ServeHTTP(0xc0004c4000, 0xb3f0a0, 0xc0004c41c0, 0xc00022a000)\n\t/usr/local/go/src/net/http/server.go:2843 +0xa3\nnet/http.(*conn).serve(0xc00024c640, 0xb40660, 0xc0000ca100)\n\t/usr/local/go/src/net/http/server.go:1925 +0x8ad\ncreated by net/http.(*Server).Serve\n\t/usr/local/go/src/net/http/server.go:2969 +0x36c\n\ngoroutine 358543 [IO wait]:\ninternal/poll.runtime_pollWait(0x7f0f18245368, 0x72, 0xb36220)\n\t/usr/local/go/src/runtime/netpoll.go:222 +0x55\ninternal/poll.(*pollDesc).wait(0xc000290298, 0x72, 0xb36200, 0xe444f0, 0x0)\n\t/usr/local/go/src/internal/poll/fd_poll_runtime.go:87 +0x45\ninternal/poll.(*pollDesc).waitRead(...)\n\t/usr/local/go/src/internal/poll/fd_poll_runtime.go:92\ninternal/poll.(*FD).Read(0xc000290280, 0xc000ecf5a1, 0x1, 0x1, 0x0, 0x0, 0x0)\n\t/usr/local/go/src/internal/poll/fd_unix.go:159 +0x1a5\nnet.(*netFD).Read(0xc000290280, 0xc000ecf5a1, 0x1, 0x1, 0xc0000ca1d8, 0xc000856f68, 0x4774bc)\n\t/usr/local/go/src/net/fd_posix.go:55 +0x4f\nnet.(*conn).Read(0xc00000e040, 0xc000ecf5a1, 0x1, 0x1, 0x0, 0x0, 0x0)\n\t/usr/local/go/src/net/net.go:182 +0x8e\nnet/http.(*connReader).backgroundRead(0xc000ecf590)\n\t/usr/local/go/src/net/http/server.go:690 +0x58\ncreated by net/http.(*connReader).startBackgroundRead\n\t/usr/local/go/src/net/http/server.go:686 +0xd5\n\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000" ``` Any idea, why this errors out? Other devices, which cannot be scraped are not producing these stack traces. Thanks a lot and regards, Olaf -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/7956644c-a2ce-4773-b9e4-b7a197bdcfdan%40googlegroups.com.
