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18.04からUbuntu Server 20.04にアップグレードした後、Webminに実行中のプロセスは表示されません。

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18.04からUbuntu Server 20.04にアップグレードした後、Webminに実行中のプロセスは表示されません。

いくつかの背景 - 最近、ヘッドレスUbuntu Server 18.04のインストールを20.04にアップグレードしました。その過程で、webminは私のシステムから消えました。リポジトリが無効になっています。だから再度有効にして再インストールしました。ほとんどすべてが私が望むところにあります（SMBサーバー構成）。デフォルトでは、メニューのカスタマイズとカスタムコマンドのみが消えました。

Webminでは実行中のプロセスは表示されません。 0と書かれています。私が気づいたのは傷ついたことだけです。だからwebminに投稿しました。フラッグハブページにアクセスし、問題が解決したという回答をタイムリーに受け取りました。ここ。だから私の問題はwebminの問題ではなくgitの問題のようです。なぜなら、そのページの修正を私のwebminインストールにどのように実装するのかわからないからです。誰でも私を正しい方向に案内していただきありがとうございます。

答え1

私の答えは他の答えに基づいています。私は次のことを行います。

rootユーザーとして：

# cd /usr/share/webmin/proc
# mv linux-lib.pl linux-lib.bkp.pl
# wget https://raw.githubusercontent.com/webmin/webmin/613f3a5f41fd094037629965e4cea1b815ac2b7d/proc/linux-lib.pl

答え2

これが私に役立ちました！これをパッチとしてダウンロードする方法がわかりませんが、私のシステムが参照するファイルは/usr/share/webmin/proc/にあります。そこからlinux.lib.plをバックアップし、nanoで編集しました。そこで、パッチに記載されている行（追加の場合は+、削除の場合は-）を変更して保存した後に機能しました。そうでなくダウンロードできる場合は、パッチコマンドを使用します。

答え3


# linux-lib.pl
# Functions for parsing linux ps output

use Time::Local;

sub get_ps_version
{
if (!$get_ps_version_cache) {
        local $out = &backquote_command("ps V 2>&1");
        if ($out =~ /version\s+([0-9\.]+)\./ ||
            $out =~ /\S+\s+([3-9][0-9\.]+)\./) {
                $get_ps_version_cache = $1;
                }
        }
return $get_ps_version_cache;
}

sub list_processes
{
local($pcmd, $line, $i, %pidmap, @plist, $dummy, @w, $_);
local $ver = &get_ps_version();
if ($ver && $ver < 2) {
        # Old version of ps
        $pcmd = join(' ' , @_);
        open(PS, "ps aulxhwwww $pcmd 2>/dev/nul |");
        for($i=0; $line=<PS>; $i++) {
                chop($line);
                if ($line =~ /ps aulxhwwww/) { $i--; next; }
                if ($line !~ /^\s*(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+([\-\d]+)\s+([\-\d]+)\s+(\d+)\s+(\d+)\s+(\S*)\s+(\S+)[\s<>N]+(\S+)\s+([0-9:]+)\s+(.*)$/) {
                        $i--;
                        next;
                        }
                $pidmap{$3} = $i;
                $plist[$i]->{"pid"} = $3;
                $plist[$i]->{"ppid"} = $4;
                $plist[$i]->{"user"} = getpwuid($2);
                $plist[$i]->{"size"} = "$7 kB";
                $plist[$i]->{"cpu"} = "Unknown";
                $plist[$i]->{"time"} = $12;
                $plist[$i]->{"nice"} = $6;
                $plist[$i]->{"args"} = $13;
                $plist[$i]->{"_pri"} = $5;
                $plist[$i]->{"_tty"} = $11 eq "?" ? $text{'edit_none'} : "/dev/tty$11";
                $plist[$i]->{"_status"} = $stat_map{substr($10, 0, 1)};
                ($plist[$i]->{"_wchan"} = $9) =~ s/\s+$//g;
                if (!$plist[$i]->{"_wchan"}) { delete($plist[$i]->{"_wchan"}); }
                if ($plist[$i]->{"args"} =~ /^\((.*)\)/)
                        { $plist[$i]->{"args"} = $1; }
                }
        close(PS);
        open(PS, "ps auxh $pcmd |");
        while($line=<PS>) {
                if ($line =~ /^\s*(\S+)\s+(\d+)\s+(\S+)\s+(\S+)\s+/ &&
                    defined($pidmap{$2})) {
                        $plist[$pidmap{$2}]->{"cpu"} = $3;
                        $plist[$pidmap{$2}]->{"_mem"} = "$4 %";
                        }
                }
        close(PS);
}
else {
        # New version of ps, as found in redhat 6
        local $width;
        if ($ver >= 3.2) {
                # Use width format character if allowed
                $width = ":80";
                }
        open(PS, "ps --cols 2048 -eo user$width,ruser$width,group$width,rgroup$width,pid,ppid,pgid,pcpu,vsz,nice,etime,time,stime,tty,args 2>/dev/null |");
        $dummy = <PS>;
        my @now = localtime(time());
        for($i=0; $line=<PS>; $i++) {
                chop($line);
                $line =~ s/^\s+//g;
                eval { @w = split(/\s+/, $line, -1); };
                if ($@) {
                        # Hit a split loop
                        $i--; next;
                        }
                if ($line =~ /ps --cols 500 -eo user/) {
                        # Skip process ID 0 or ps command
                        $i--; next;
                        }
                if (@_ && &indexof($w[4], @_) < 0) {
                        # Not interested in this PID
                        $i--; next;
                        }
                $plist[$i]->{"pid"} = $w[4];
                $plist[$i]->{"ppid"} = $w[5];
                $plist[$i]->{"user"} = $w[0];
                $plist[$i]->{"cpu"} = "$w[7] %";
                $plist[$i]->{"size"} = "$w[8] kB";
                $plist[$i]->{"bytes"} = $w[8]*1024;
                $plist[$i]->{"time"} = $w[11];
                $plist[$i]->{"_stime"} = $w[12];
                eval {
                        if (($w[12] =~ /^(\d+):(\d+)$/ ||
                             $w[12] =~ /^(\d+):(\d+):(\d+)$/) &&
                            $3 < 60 && $2 < 60 && $1 < 24) {
                                # Started today
                                $plist[$i]->{"_stime_unix"} =
                                        timelocal($3 || 0, $2, $1,
                                                  $now[3], $now[4], $now[5]);
                                }
                        elsif ($w[12] =~ /^(\S\S\S)\s*(\d+)$/ && $2 < 32) {
                                # Started on some other day
                                $plist[$i]->{"_stime_unix"} =
                                        timelocal(0, 0, 0, $2,
                                                &month_to_number($1), $now[5]);
                                }
                        };
                $plist[$i]->{"nice"} = $w[9];
                $plist[$i]->{"args"} = @w<15 ? "defunct" : join(' ', @w[14..$#w]);
                $plist[$i]->{"_group"} = $w[2];
                $plist[$i]->{"_ruser"} = $w[1];
                $plist[$i]->{"_rgroup"} = $w[3];
                $plist[$i]->{"_pgid"} = $w[6];
                $plist[$i]->{"_tty"} = $w[13] =~ /\?/ ? $text{'edit_none'} : "/dev/$w[13]";
                }
        close(PS);
        }
return @plist;
}

# renice_proc(pid, nice)
sub renice_proc
{
return undef if (&is_readonly_mode());
local $out = &backquote_logged("renice $_[1] -p $_[0] 2>&1");
if ($?) { return $out; }
return undef;
}

# find_mount_processes(mountpoint)
# Find all processes under some mount point
sub find_mount_processes
{
local($out);
&has_command("fuser") || &error("fuser command is not installed");
$out = &backquote_command("fuser -m ".quotemeta($_[0])." 2>/dev/null");
$out =~ s/[^0-9 ]//g;
$out =~ s/^\s+//g; $out =~ s/\s+$//g;
return split(/\s+/, $out);
}

# find_file_processes([file]+)
# Find all processes with some file open
sub find_file_processes
{
local($out, $files);
&has_command("fuser") || &error("fuser command is not installed");
$files = join(' ', map { quotemeta($_) } map { glob($_) } @_);
$out = &backquote_command("fuser $files 2>/dev/null");
$out =~ s/[^0-9 ]//g;
$out =~ s/^\s+//g; $out =~ s/\s+$//g;
return split(/\s+/, $out);
}

# get_new_pty()
# Returns the filehandles and names for a pty and tty
sub get_new_pty
{
if (-r "/dev/ptmx" && -d "/dev/pts" && open(PTMX, "+>/dev/ptmx")) {
        # Can use new-style PTY number allocation device
        local $unl;
        local $ptn;

        # ioctl to unlock the PTY (TIOCSPTLCK)
        $unl = pack("i", 0);
        ioctl(PTMX, 0x40045431, $unl) || &error("Unlock ioctl failed : $!");
        $unl = unpack("i", $unl);

        # ioctl to request a TTY (TIOCGPTN)
        ioctl(PTMX, 0x80045430, $ptn) || &error("PTY ioctl failed : $!");
        $ptn = unpack("i", $ptn);

        local $tty = "/dev/pts/$ptn";
        return (*PTMX, undef, $tty, $tty);
        }
else {
        # Have to search manually through pty files!
        local @ptys;
        local $devstyle;
        if (-d "/dev/pty") {
                opendir(DEV, "/dev/pty");
                @ptys = map { "/dev/pty/$_" } readdir(DEV);
                closedir(DEV);
                $devstyle = 1;
                }
        else {
                opendir(DEV, "/dev");
                @ptys = map { "/dev/$_" } (grep { /^pty/ } readdir(DEV));
                closedir(DEV);
                $devstyle = 0;
                }
        local ($pty, $tty);
        foreach $pty (@ptys) {
                open(PTY, "+>$pty") || next;
                local $tty = $pty;
                if ($devstyle == 0) {
                        $tty =~ s/pty/tty/;
                        }
                else {
                        $tty =~ s/m(\d+)$/s$1/;
                        }
                local $old = select(PTY); $| = 1; select($old);
                if ($< == 0) {
                        # Don't need to open the TTY file here for root,
                        # as it will be opened later after the controlling
                        # TTY has been released.
                        return (*PTY, undef, $pty, $tty);
                        }
                else {
                        # Must open now ..
                        open(TTY, "+>$tty");
                        select(TTY); $| = 1; select($old);
                        return (*PTY, *TTY, $pty, $tty);
                        }
                }
        return ();
        }
}

# close_controlling_pty()
# Disconnects this process from it's controlling PTY, if connected
sub close_controlling_pty
{
if (open(DEVTTY, "/dev/tty")) {
        # Special ioctl to disconnect (TIOCNOTTY)
        ioctl(DEVTTY, 0x5422, 0);
        close(DEVTTY);
        }
}

# open_controlling_pty(ptyfh, ttyfh, ptyfile, ttyfile)
# Makes a PTY returned from get_new_pty the controlling TTY (/dev/tty) for
# this process.
sub open_controlling_pty
{
local ($ptyfh, $ttyfh, $pty, $tty) = @_;

# Call special ioctl to attach /dev/tty to this new tty (TIOCSCTTY)
ioctl($ttyfh, 0x540e, 0);
}

# get_memory_info()
# Returns a list containing the real mem, free real mem, swap and free swap,
# and possibly cached memory and the burstable limit. All of these are in Kb.
sub get_memory_info
{
local %m;
local $memburst;
if (&running_in_openvz() && open(BEAN, "/proc/user_beancounters")) {
        # If we are running under Virtuozzo, there may be a limit on memory
        # use in force that is less than the real system's memory. Or it may be
        # a higher 'burstable' limit. Use this, unless it is unreasonably
        # high (like 1TB)
        local $pagesize = 1024;
        eval {
                use POSIX;
                $pagesize = POSIX::sysconf(POSIX::_SC_PAGESIZE);
                };
        while(<BEAN>) {
                if (/privvmpages\s+(\d+)\s+(\d+)\s+(\d+)/ &&
                    $3 < 1024*1024*1024*1024) {
                        $memburst = $3 * $pagesize / 1024;
                        last;
                        }
                }
        close(BEAN);
        }
open(MEMINFO, "/proc/meminfo") || return ();
while(<MEMINFO>) {
        if (/^(\S+):\s+(\d+)/) {
                $m{lc($1)} = $2;
                }
        }
close(MEMINFO);
local $memtotal;
if ($memburst && $memburst > $m{'memtotal'}) {
        # Burstable limit is higher than actual RAM
        $memtotal = $m{'memtotal'};
        }
elsif ($memburst && $memburst < $m{'memtotal'}) {
        # Limit is less than actual RAM
        $memtotal = $memburst;
        $memburst = undef;
        }
elsif ($memburst && $memburst == $m{'memtotal'}) {
        # Same as actual RAM
        $memtotal = $memburst;
        $memburst = undef;
        }
elsif (!$memburst) {
        # No burstable limit set, like on a real system
        $memtotal = $m{'memtotal'};
        }
return ( $memtotal,
         $m{'cached'} > $memtotal ? $m{'memfree'} :
                $m{'memfree'}+$m{'buffers'}+$m{'cached'},
         $m{'swaptotal'}, $m{'swapfree'},
         $m{'buffers'} + $m{'cached'},
         $memburst, );
}

# os_get_cpu_info()
# Returns a list containing the 5, 10 and 15 minute load averages, and the
# CPU mhz, model, vendor, cache and count
sub os_get_cpu_info
{
open(LOAD, "/proc/loadavg") || return ();
local @load = split(/\s+/, <LOAD>);
close(LOAD);
local %c;
open(CPUINFO, "/proc/cpuinfo");
while(<CPUINFO>) {
        if (/^(\S[^:]*\S)\s*:\s*(.*)/) {
                $c{lc($1)} = $2;
                }
        }
close(CPUINFO);
$c{'model name'} =~ s/\d+\s*mhz//i;
if ($c{'cache size'} =~ /^(\d+)\s+KB/i) {
        $c{'cache size'} = $1*1024;
        }
elsif ($c{'cache size'} =~ /^(\d+)\s+MB/i) {
        $c{'cache size'} = $1*1024*1024;
        }
if (!$c{'cpu mhz'} && $c{'model name'}) {
        $c{'bogomips'} =~ s/\..*$//;
        $c{'model name'} .= " @ ".$c{'bogomips'}." bMips";
        }

# Merge in info from /proc/device-tree
if (!$c{'model name'}) {
        $c{'model name'} = &read_file_contents("/proc/device-tree/model");
        }

if ($c{'model name'}) {
        return ( $load[0], $load[1], $load[2],
                 int($c{'cpu mhz'}), $c{'model name'}, $c{'vendor_id'},
                 $c{'cache size'}, $c{'processor'}+1 );
        }
else {
        return ( $load[0], $load[1], $load[2] );
        }
}

$has_trace_command = &has_command("strace");

# open_process_trace(pid, [&syscalls])
# Starts tracing on some process, and returns a trace object
sub open_process_trace
{
local $fh = time().$$;
local $sc;
if (@{$_[1]}) {
        $sc = "-e trace=".join(",", @{$_[1]});
        }
local $tpid = open($fh, "strace -t -p $_[0] $sc 2>&1 |");
$line = <$fh>;
return { 'pid' => $_[0],
         'tpid' => $tpid,
         'fh' => $fh };
}

# close_process_trace(&trace)
# Halts tracing on some trace object
sub close_process_trace
{
kill('TERM', $_[0]->{'tpid'}) if ($_[0]->{'tpid'});
close($_[0]->{'fh'});
}

# read_process_trace(&trace)
# Returns an action structure representing one action by traced process, or
# undef if an error occurred
sub read_process_trace
{
local $fh = $_[0]->{'fh'};
local @tm = localtime(time());
while(1) {
        local $line = <$fh>;
        return undef if (!$line);
        if ($line =~ /^(\d+):(\d+):(\d+)\s+([^\(]+)\((.*)\)\s*=\s*(\-?\d+|\?)/) {
                local $tm = timelocal($3, $2, $1, $tm[3], $tm[4], $tm[5]);
                local $action = { 'time' => $tm,
                                  'call' => $4,
                                  'rv' => $6 eq "?" ? undef : $6 };
                local $args = $5;
                local @args;
                while(1) {
                        if ($args =~ /^[ ,]*(\{[^}]*\})(.*)$/) {
                                # A structure in { }
                                push(@args, $1);
                                $args = $2;
                                }
                        elsif ($args =~ /^[ ,]*"([^"]*)"\.*(.*)$/) {
                                # A quoted string
                                push(@args, $1);
                                $args = $2;
                                }
                        elsif ($args =~ /^[ ,]*\[([^\]]*)\](.*)$/) {
                                # A square-bracket number
                                push(@args, $1);
                                $args = $2;
                                }
                        elsif ($args =~ /^[ ,]*\<([^\>]*)\>(.*)$/) {
                                # An angle-bracketed string
                                push(@args, $1);
                                $args = $2;
                                }
                        elsif ($args =~ /[ ,]*([^, ]+)(.*)$/) {
                                # Just a number
                                push(@args, $1);
                                $args = $2;
                                }
                        else {
                                last;
                                }
                        }
                if ($args[$#args] eq $action->{'rv'}) {
                        pop(@args);     # last arg is same as return value?
                        }
                $action->{'args'} = \@args;
                return $action;
                }
        }
}

foreach $ia (keys %text) {
        if ($ia =~ /^linux(_\S+)/) {
                $info_arg_map{$1} = $text{$ia};
                }
        elsif ($ia =~ /^linuxstat_(\S+)/) {
                $stat_map{$1} = $text{$ia};
                }
        }

@nice_range = (-20 .. 20);

$has_fuser_command = 1;

# os_list_scheduling_classes()
# Returns a list of Linux scheduling classes, if supported. Each element is a
# 2-element array ref containing a code and description.
sub os_list_scheduling_classes
{
if (&has_command("ionice")) {
        return ( [ 1, $text{'linux_real'} ],
                 [ 2, $text{'linux_be'} ],
                 [ 3, $text{'linux_idle'} ] );
        }
return ( );
}

# os_list_scheduling_priorities()
# Returns a list of IO priorities, each of which is an array ref containing
# a number and description
sub os_list_scheduling_priorities
{
return ( [ 0, "0 ($text{'edit_prihigh'})" ],
         [ 1 ], [ 2 ], [ 3 ], [ 4 ], [ 5 ], [ 6 ],
         [ 7, "7 ($text{'edit_prilow'})" ] );
}

# os_get_scheduling_class(pid)
# Returns the IO scheduling class and priority for a running program
sub os_get_scheduling_class
{
local ($pid) = @_;
local $out = &backquote_command("ionice -p ".quotemeta($pid));
if ($out =~ /^(realtime|best-effort|idle|none):\s+prio\s+(\d+)/) {
        return ($1 eq "realtime" ? 1 : $1 eq "best-effort" ? 2 :
                $1 eq "idle" ? 3 : 0, $2);
        }
return ( );
}

# os_set_scheduling_class(pid, class, priority)
# Sets the ID scheduling class and priority for some process. Returns an error
# message on failure, undef on success.
sub os_set_scheduling_class
{
local ($pid, $class, $prio) = @_;
local $cmd = "ionice -c ".quotemeta($class);
$cmd .= " -n ".quotemeta($prio) if (defined($prio));
$cmd .= " -p ".quotemeta($pid);
local $out = &backquote_logged("$cmd 2>&1 </dev/null");
return $? ? $out : undef;
}

# get_current_cpu_temps()
# Returns a list of hash refs containing CPU temperatures
sub get_current_cpu_temps
{
my @rv;
if (&has_command("sensors")) {
        my $fh = "SENSORS";
        &open_execute_command($fh, "sensors </dev/null 2>/dev/null", 1);
        while(<$fh>) {
                if (/Core\s+(\d+):\s+([\+\-][0-9\.]+)/) {
                        push(@rv, { 'core' => $1,
                                    'temp' => $2 });
                        }
                elsif (/CPU:\s+([\+\-][0-9\.]+)/) {
                        push(@rv, { 'core' => 0,
                                    'temp' => $1 });
                        }
                }
        close($fh);
        }
return @rv;
}

# get_cpu_io_usage()
# Returns a list containing CPU user, kernel, idle, io and VM time, and IO
# blocks in and out
sub get_cpu_io_usage
{
my $out,@lines,@w;
if (&has_command("vmstat")) {
        $out = &backquote_command("vmstat 1 2 2>/dev/null");
        @lines = split(/\r?\n/, $out);
        @w = split(/\s+/, $lines[$#lines]);
        shift(@w) if ($w[0] eq '');
        if ($w[8] =~ /^\d+$/ && $w[9] =~ /^\d+$/) {
            return ( @w[12..16], $w[8], $w[9] );
        }
    } elsif (&has_command("dstat")) {
        $out = &backquote_command("dstat 1 1 2>/dev/null");
        @lines = split(/\r?\n/, $out);
        @w = split(/[\s|]+/, $lines[$#lines]);
        shift(@w) if ($w[0] eq '');
        return( @w[0..4], @w[6..7]);
    }
    return undef;
}

1;

`

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