我改变了主意，并试图在 ubuntu 服务器上配置 munin 插件。我在终端中将 Perl 代码粘贴为 bash - 每行代码都作为命令运行。
perl 语法是否足够不同，不会对服务器造成任何损坏或意外更改？
这是代码(顺便说一句，它确实在我的主目录中创建了两个文件夹，这就是我担心的原因):
我想知道我是不是无意中弄乱了什么:S
#!/usr/bin/perl
#
# Plugin to monitor the number of accesses to Apache servers. It handles
# a list of ports passed in from a plugin configuration file.
#
# Requirements:
# - Needs access to http://localhost/server-status?auto (or modify the
# address for another host). See your apache documentation on how to
# set up this url in your httpd.conf. Apache needs ExtendedStatus
# enabled for this plugin to work
#
# Tip: To see if it's already set up correctly, just run this plugin
# with the parameter "autoconf". If you get a "yes", everything should
# work like a charm already.
#
# Parameters supported:
#
# config
# autoconf
#
# Configurable variables
#
# url - Override default status-url
# port - HTTP port numbers
#
# ssl - activate SSL (add env.ssl yes in munin plugin configuration)
# urls - Override default status-url (SSL)
# ports - HTTPS port numbers (SSL)
#
# $Log$
# Revision 1.13 2006/03/07 20:30:00 fra519
# adapt script for Apache-SSL Server.
#
# Revision 1.12 2004/12/10 18:51:43 jimmyo
# linux/apt* has been forced to LANG=C, to get predictable output.
#
# Revision 1.11 2004/12/10 10:47:47 jimmyo
# Change name from ${scale} to ${graph_period}, to be more consistent.
#
# Revision 1.10 2004/12/09 22:12:54 jimmyo
# Added "graph_period" option, to make "graph_sums" usable.
#
# Revision 1.9 2004/09/26 22:14:39 jimmyo
# Changd COUNTER -> DERIVE for some plugins. Set min/max values.
#
# Revision 1.8 2004/05/20 13:57:11 jimmyo
# Set categories to some of the plugins.
#
# Revision 1.7 2004/05/14 21:16:46 jimmyo
# "Upped" som plugins from contrib/manual to auto.
#
# Revision 1.6 2004/04/27 21:32:06 jimmyo
# Clarified the vlabels in the apache-plugins (Deb#238594).
#
# Revision 1.5 2004/04/27 08:46:57 jimmyo
# Fixed broken autoconf in apache-* plugins (Deb#236144).
#
# Revision 1.4 2004/02/18 15:47:35 jimmyo
# The generic/apache_* plugins now have defined max values.
#
# Revision 1.3 2004/02/03 17:17:25 jimmyo
# Generic/apache-plugins have been modified to properly to report the correct autoconf value. Also, bugfixes in _processes and _volume.
#
# Revision 1.2 2004/01/29 18:47:30 jimmyo
# Made plugins apache_* compatible with older versions of LWP::UserAgent (SF#881411).
#
# Revision 1.1 2004/01/02 18:50:00 jimmyo
# Renamed occurrances of lrrd -> munin
#
# Revision 1.1.1.1 2004/01/02 15:18:07 jimmyo
# Import of LRRD CVS tree after renaming to Munin
#
# Revision 1.4 2003/12/18 16:35:33 jimmyo
# fail more gracefully when using uninstalled perl modules.
#
# Revision 1.3 2003/11/07 17:43:16 jimmyo
# Cleanups and log entries
#
#
#
# Magic markers:
#%# family=auto
#%# capabilities=autoconf
my $ret = undef;
my $ssl = undef;
if (! eval "require LWP::UserAgent;")
{
$ret = "LWP::UserAgent not found";
}
if (! eval "require Crypt::SSLeay;" and exists $ENV{'ssl'})
{
$ssl = "Crypt::SSLeay not found";
}
my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://127.0.0.1:%d/server-status?auto";
my @PORT = exists $ENV{'port'} ? split(' ', $ENV{'port'}) : (80);
my $URLS = exists $ENV{'urls'} ? $ENV{'urls'} : "https://127.0.0.1:%d/server-status?auto";
my @PORTS = exists $ENV{'ports'} ? split(' ', $ENV{'ports'}) : (443);
if ( exists $ARGV[0] and $ARGV[0] eq "autoconf" )
{
if ($ret)
{
print "no ($ret)\n";
exit 1;
}
if ($ssl) {
print "no ($ssl)\n";
exit 1;
}
my $ua = LWP::UserAgent->new(timeout => 30);
my @badports;
foreach my $port (@PORT) {
my $url = sprintf $URL, $port;
my $response = $ua->request(HTTP::Request->new('GET',$url));
push @badports, $port unless $response->is_success and $response->content =~ /^Total Accesses:/im;
}
if (exists $ENV{'ssl'}) {
foreach my $port (@PORTS) {
my $url = sprintf $URLS, $port;
my $response = $ua->request(HTTP::Request->new('GET',$url));
push @badports, $port unless $response->is_success and $response->content =~ /^Total Accesses:/im;
}
}
if (@badports) {
print "no (no apache server-status or ExtendedStatus missing on ports @badports)\n";
exit 1;
} else {
print "yes\n";
exit 0;
}
}
if ( exists $ARGV[0] and $ARGV[0] eq "config" )
{
print "graph_title Apache accesses\n";
print "graph_args --base 1000\n";
print "graph_vlabel accesses / \${graph_period}\n";
print "graph_category apache\n";
foreach my $port (@PORT) {
print "accesses$port.label port $port\n";
print "accesses$port.type DERIVE\n";
print "accesses$port.max 1000000\n";
print "accesses$port.min 0\n";
}
if (exists $ENV{'ssl'}) {
foreach my $port (@PORTS) {
print "accesses$port.label port $port\n";
print "accesses$port.type DERIVE\n";
print "accesses$port.max 1000000\n";
print "accesses$port.min 0\n";
}
}
exit 0;
}
my $ua = LWP::UserAgent->new(timeout => 30);
foreach my $port (@PORT) {
my $url = sprintf $URL, $port;
my $response = $ua->request(HTTP::Request->new('GET',$url));
if ($response->content =~ /^Total Accesses:\s+(.+)$/im) {
print "accesses$port.value $1\n";
} else {
print "accesses$port.value U\n";
}
}
if (exists $ENV{'ssl'}) {
foreach my $port (@PORTS) {
my $url = sprintf $URLS, $port;
my $response = $ua->request(HTTP::Request->new('GET',$url));
if ($response->content =~ /^Total Accesses:\s+(.+)$/im) {
print "accesses$port.value $1\n";
} else {
print "accesses$port.value U\n";
}
}
}
# vim:syntax=perl
最佳答案
评论将被忽略。我最初的意思是 Perl 注释。看起来我将不得不忽略反对票，因为我在这里帮助你 :)
我已将命令粘贴到 vanilla Ubuntu 桌面安装的 bash shell 中。出于各种原因，反对者会(并非不合理地)认为这是一个坏主意。
我的态度是，我有一个备用的 Ubuntu 虚拟机可以用来测试它，所以如果它出现任何问题，我很乐意销毁它。粗略地目视检查代码会发现以下内容。
你有命令 call my 吗？如果不是，则以下代码没有地雷。
my $ret = undef;
my $ssl = undef;
if (! eval "require LWP::UserAgent;")
if (! eval "require Crypt::SSLeay;" and exists $ENV{'ssl'})
{
$ssl = "Crypt::SSLeay not found";
}
my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://127.0.0.1:%d/server-status?auto";
my @PORT = exists $ENV{'port'} ? split(' ', $ENV{'port'}) : (80);
my $URLS = exists $ENV{'urls'} ? $ENV{'urls'} : "https://127.0.0.1:%d/server-status?auto";
my @PORTS = exists $ENV{'ports'} ? split(' ', $ENV{'ports'}) : (443);
接下来我们有
if ( exists $ARGV[0] and $ARGV[0] eq "autoconf" )
{
if ($ret)
{
print "no ($ret)\n";
exit 1;
}
if ($ssl) {
print "no ($ssl)\n";
exit 1;
exit 1 会将您带出当前 shell。
假设您在子 shell 中进行更多分析...
这是有趣的代码。
rkielty@ubuntu:~$ foreach my $port (@PORT) {
bash: syntax error near unexpected token `('
清除地雷
rkielty@ubuntu:~$ push @badports, $port unless $response->is_success and $response->content =~ /^Total Accesses:/im;
The program 'push' is currently not installed. You can install it by typing:
sudo apt-get install heimdal-clients
现在您必须检查您是否有一个push 程序并查看它的作用。
运行 which push 然后 man 或 info push
rkielty@ubuntu:~$ print "no (no apache server-status or ExtendedStatus missing on ports @badports)\n";
Warning: unknown mime-type for "no (no apache server-status or ExtendedStatus missing on ports @badports)\n" -- using "application/octet-stream"
Error: no such file "no (no apache server-status or ExtendedStatus missing on ports @badports)\n"
所以这里我们受到了错误的保护。
从那里开始有两次 exit 调用。
看来你应该没问题。
注意事项是您需要确保系统上没有名为my 或push 的程序
我不确定目录是如何创建的，您可能应该进一步调查。请记住，它们可能不是由此引起的。
关于bash - 如果这些 Perl 命令在粘贴到 shell 中时被解释为 Bash 命令，是否有害？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10914814/