Our R Shiny apps stopped displaying correctly (we have the free version of Shiny Server). After doing some digging, we also found that our webserver would crash every time we opened R Shiny. The Apache logs only show this:
[core:notice] [pid 14401:tid 140650518312768] AH00094: Command line: '/ranalytics/apache/bin/httpd'
[mpm_event:notice] [pid 14401:tid 140650518312768] AH00491: caught SIGTERM, shutting down
the pid 1440 is the httpd.pid. We have no idea why this is happening. I bring apache back up and as soon as I open an RShiny app, Apache crashes.
Shiny log:
Listening on http://
Error: C stack usage 440230078736 is too close to the limit
*** caught segfault ***
address 0x71000013, cause 'memory not mapped'
Warning: stack imbalance in 'lazyLoadDBfetch', 23 then 33
Traceback:
Warning: stack imbalance in '{', 18 then 29
Warning: stack imbalance in '{', 12 then 23
1: sys.calls()
2: h(simpleError(msg, call))
3: .handleSimpleError(function (e) { if (is.null(attr(e, "stack.trace", exact = TRUE))) { calls <- sys.calls() parents <- sys.parents() attr(calls, "parents") <- parentsExecution halted
attr(e, "stack.trace") <- calls } if (deepStacksEnabled()) { if (is.null(attr(e, "deep.stack.trace", exact = TRUE)) && !is.null(.globals$deepStack)) { attr(e, "deep.stack.trace") <- .globals$deepStack } } stop(e)}, "not a BUILTIN function", quote(run_now(timeoutMs/1000, all = FALSE)))
4: run_now(timeoutMs/1000, all = FALSE)
5: service(timeout)
6: serviceApp()
7: ..stacktracefloor..(serviceApp())
An irrecoverable exception occurred. R is aborting now ...
-bash: line 1: 14092 Segmentation fault (core dumped) R --no-save --slave -f \/opt\/shiny-server\/R\/SockJSAdapter\.R