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https://issues.apache.org/jira/browse/SUREFIRE-1422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16389954#comment-16389954
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Thomas Raehalme commented on SUREFIRE-1422:
-------------------------------------------
I've written about the issue [on my
blog|http://raehal.me/maven-surefire-plugin-on-Docker/] with examples of both
output and contents of the dump file.
You can verify the ps functionality with Docker:
{code}
$ docker run -it --rm maven:3.5.2-jdk-8-alpine /bin/sh
/ # ps --help
BusyBox v1.25.1 (2016-10-26 16:15:20 GMT) multi-call binary.
Usage: ps [-o COL1,COL2=HEADER]
Show list of processes
-o COL1,COL2=HEADER Select columns for display
/ #
{code}
As you can see the default implementation from BusyBox in Alpine is rather
limited regarding options.
But if you install the {{procps}} package, you get the needed options.
{code}
$ docker run -it --rm maven:3.5.2-jdk-8-alpine /bin/sh
/ # apk add --update procps
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/community/x86_64/APKINDEX.tar.gz
(1/3) Installing libintl (0.19.8.1-r0)
(2/3) Installing libproc (3.3.12-r1)
(3/3) Installing procps (3.3.12-r1)
Executing busybox-1.25.1-r0.trigger
OK: 110 MiB in 62 packages
/ # ps --help all
Usage:
ps [options]
Basic options:
-A, -e all processes
-a all with tty, except session leaders
a all with tty, including other users
-d all except session leaders
-N, --deselect negate selection
r only running processes
T all processes on this terminal
x processes without controlling ttys
Selection by list:
-C <command> command name
-G, --Group <GID> real group id or name
-g, --group <group> session or effective group name
-p, p, --pid <PID> process id
--ppid <PID> parent process id
-q, q, --quick-pid <PID>
process id (quick mode)
-s, --sid <session> session id
-t, t, --tty <tty> terminal
-u, U, --user <UID> effective user id or name
-U, --User <UID> real user id or name
The selection options take as their argument either:
a comma-separated list e.g. '-u root,nobody' or
a blank-separated list e.g. '-p 123 4567'
Output formats:
-F extra full
-f full-format, including command lines
f, --forest ascii art process tree
-H show process hierarchy
-j jobs format
j BSD job control format
-l long format
l BSD long format
-M, Z add security data (for SELinux)
-O <format> preloaded with default columns
O <format> as -O, with BSD personality
-o, o, --format <format>
user-defined format
s signal format
u user-oriented format
v virtual memory format
X register format
-y do not show flags, show rss vs. addr (used with -l)
--context display security context (for SELinux)
--headers repeat header lines, one per page
--no-headers do not print header at all
--cols, --columns, --width <num>
set screen width
--rows, --lines <num>
set screen height
Show threads:
H as if they were processes
-L possibly with LWP and NLWP columns
-m, m after processes
-T possibly with SPID column
Miscellaneous options:
-c show scheduling class with -l option
c show true command name
e show the environment after command
k, --sort specify sort order as: [+|-]key[,[+|-]key[,...]]
L show format specifiers
n display numeric uid and wchan
S, --cumulative include some dead child process data
-y do not show flags, show rss (only with -l)
-V, V, --version display version information and exit
-w, w unlimited output width
--help <simple|list|output|threads|misc|all>
display help and exit
For more details see ps(1).
/ #
{code}
Hope this helps! If I can help with anything please let me know.
> Forking fails on Linux if /bin/ps isn't available
> -------------------------------------------------
>
> Key: SUREFIRE-1422
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1422
> Project: Maven Surefire
> Issue Type: Bug
> Components: process forking
> Affects Versions: 2.20.1
> Environment: Linux (Debian 9 with OpenJDK 8)
> Reporter: Emmanuel Bourg
> Assignee: Tibor Digana
> Priority: Major
> Fix For: 2.21.0
>
>
> Hi,
> With the changes introduced by SUREFIRE-1302 I'm now experiencing a failure
> on Linux when the fork mode is enabled:
> {code}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-surefire-plugin:2.20.1:test (default-test) on
> project foo: There are test failures.
> [ERROR]
> [ERROR] Please refer to /foo/target/surefire-reports for the individual test
> results.
> [ERROR] Please refer to dump files (if any exist) [date]-jvmRun[N].dump,
> [date].dumpstream and [date]-jvmRun[N].dumpstream.
> [ERROR] The forked VM terminated without properly saying goodbye. VM crash or
> System.exit called?
> {code}
> I traced the issue back to the PpidChecker class, the code assumes that
> {{/bin/ps}} or {{/usr/bin/ps}} exist but this isn't guaranteed (especially on
> trimmed down containers commonly used for continuous integration).
> It would be nice to have a fallback mechanism when ps isn't available, or at
> least check its existence and display an explicit message stating that it
> must be installed.
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