[Bps-public-commit] app-aws-cloudwatch-monitor-check-fail2ban branch add-check-module created. 3c37ab20abf2f1e9a6b2fb5351e121c3b96eb041
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- Log -----------------------------------------------------------------
commit 3c37ab20abf2f1e9a6b2fb5351e121c3b96eb041
Author: Blaine Motsinger <blaine at bestpractical.com>
Date: Wed Jan 26 18:21:11 2022 -0600
Add README.md for display on GitHub
diff --git a/MANIFEST.SKIP b/MANIFEST.SKIP
index 60ea4b4..61c20fc 100644
--- a/MANIFEST.SKIP
+++ b/MANIFEST.SKIP
@@ -37,6 +37,8 @@ MYMETA\.json
MYMETA\.yml$
\.tar\.gz$$
+README.md
+
# Author tests and files
996_perl-tidy.t
997_perl-critic.t
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4c85d41
--- /dev/null
+++ b/README.md
@@ -0,0 +1,42 @@
+# NAME
+
+App::AWS::CloudWatch::Monitor::Check::Fail2Ban - gather fail2ban jail metrics
+
+# SYNOPSIS
+
+ my $plugin = App::AWS::CloudWatch::Monitor::Check::Fail2Ban->new();
+ my $metrics = $plugin->check();
+
+ aws-cloudwatch-monitor --check Fail2Ban
+
+# DESCRIPTION
+
+`App::AWS::CloudWatch::Monitor::Check::Fail2Ban` is a [App::AWS::CloudWatch::Monitor::Check](https://metacpan.org/pod/App::AWS::CloudWatch::Monitor::Check) module which gathers fail2ban jail metrics.
+
+# METRICS
+
+Data for this check is read from [fail2ban-client(1)](http://man.he.net/man1/fail2ban-client). The following metrics are returned.
+
+- fail2ban-CurrentlyBanned
+
+ The cumulative currently banned for all active jails.
+
+- fail2ban-TotalBanned
+
+ The cumulative total banned for all active jails.
+
+# METHODS
+
+- check
+
+ Gathers the metric data and returns an arrayref of hashrefs with keys `MetricName`, `Unit`, `RawValue`.
+
+# DEPENDENCIES
+
+`App::AWS::CloudWatch::Monitor::Check::Fail2Ban` depends on the external program, [fail2ban-client(1)](http://man.he.net/man1/fail2ban-client).
+
+# KNOWN ISSUES
+
+[fail2ban-client(1)](http://man.he.net/man1/fail2ban-client) requires root privileges to read the logfiles. This check must also be run with root privileges because of its dependency on [fail2ban-client(1)](http://man.he.net/man1/fail2ban-client).
+
+ Permission denied to socket: /var/run/fail2ban/fail2ban.sock, (you must be root)
commit b7c29727fdc282ce630ae85f20f8de18033c0ae5
Author: Blaine Motsinger <blaine at bestpractical.com>
Date: Fri Jan 21 14:31:44 2022 -0600
Add LICENSE
This commit adds the Apache 2.0 license.
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..6b0b127
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,203 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+ 7. Disclaimer of Warranty. Unless required by applicable law or
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+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
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+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
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+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
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+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
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+
diff --git a/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm b/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
index c9b7566..5c43667 100644
--- a/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
+++ b/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
@@ -1,3 +1,17 @@
+# Copyright 2021 Best Practical Solutions, LLC <sales at bestpractical.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
package App::AWS::CloudWatch::Monitor::Check::Fail2Ban;
use strict;
commit 822f50112758bf49206ec8e0642fd3a3a8356eb7
Author: Blaine Motsinger <blaine at bestpractical.com>
Date: Fri Jan 21 14:28:56 2022 -0600
Add build scaffolding
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d711349
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,13 @@
+MYMETA.*
+blib/
+/nytprof.out*
+/.prove
+*~
+*.swp
+*.swo
+cover_db/
+Makefile
+Makefile.old
+MANIFEST.bak
+App-AWS-CloudWatch-Monitor-Check-Fail2Ban*
+pm_to_blib
diff --git a/Changes b/Changes
new file mode 100644
index 0000000..4b0bbd3
--- /dev/null
+++ b/Changes
@@ -0,0 +1,4 @@
+Revision history for perl module App::AWS::CloudWatch::Monitor::Check::Fail2Ban
+
+0.01 YYYY-MM-DD
+ - Initial version
diff --git a/MANIFEST b/MANIFEST
new file mode 100644
index 0000000..bd3c2c8
--- /dev/null
+++ b/MANIFEST
@@ -0,0 +1,8 @@
+Changes
+lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
+LICENSE
+Makefile.PL
+MANIFEST This list of files
+MANIFEST.SKIP
+README
+t/00_load.t
diff --git a/MANIFEST.SKIP b/MANIFEST.SKIP
new file mode 100644
index 0000000..60ea4b4
--- /dev/null
+++ b/MANIFEST.SKIP
@@ -0,0 +1,46 @@
+# Avoid version control files.
+\bRCS\b
+\bCVS\b
+\bSCCS\b
+,v$
+\B\.svn\b
+\B\.git\b
+\B\.gitignore\b
+\b_darcs\b
+
+# Avoid Makemaker generated and utility files.
+\bMANIFEST\.bak
+\bMakefile$
+\bblib/
+\bMakeMaker-\d
+\bpm_to_blib\.ts$
+\bpm_to_blib$
+\bblibdirs\.ts$ # 6.18 through 6.25 generated this
+
+# Avoid Module::Build generated and utility files.
+\bBuild$
+\b_build/
+
+# Avoid temp and backup files.
+~$
+\.old$
+\#$
+\b\.#
+\.bak$
+
+# Avoid Devel::Cover files.
+\bcover_db\b
+
+t/tmp/
+\.tagstagstags
+MYMETA\.json
+MYMETA\.yml$
+\.tar\.gz$$
+
+# Author tests and files
+996_perl-tidy.t
+997_perl-critic.t
+998_pod-checker.t
+999_pod-coverage.t
+perltidyrc
+perlcriticrc
diff --git a/Makefile.PL b/Makefile.PL
new file mode 100644
index 0000000..4822615
--- /dev/null
+++ b/Makefile.PL
@@ -0,0 +1,43 @@
+use ExtUtils::MakeMaker;
+
+WriteMakefile(
+ NAME => 'App::AWS::CloudWatch::Monitor::Check::Fail2Ban',
+ AUTHOR => 'Best Practical Solutions, LLC <modules at bestpractical.com>',
+ ABSTRACT_FROM => 'lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm',
+ VERSION_FROM => 'lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm',
+ LICENSE => 'apache_2_0',
+ META_MERGE => {
+ 'meta-spec' => { version => 2 },
+ resources => {
+ repository => {
+ type => 'git',
+ url => 'https://github.com/bestpractical/app-aws-cloudwatch-monitor-check-fail2ban.git',
+ web => 'https://github.com/bestpractical/app-aws-cloudwatch-monitor-check-fail2ban',
+ },
+ },
+ },
+
+ MIN_PERL_VERSION => '5.10.1',
+ BUILD_REQUIRES => {
+ 'ExtUtils::MakeMaker' => '6.64', # for TEST_REQUIRES
+ },
+ CONFIGURE_REQUIRES => {
+ 'ExtUtils::MakeMaker' => '6.64',
+ },
+ TEST_REQUIRES => {
+ 'FindBin' => 0,
+ 'File::Find' => 0,
+ 'File::Spec' => 0,
+ 'Test::More' => '0.98', # for subtest()
+ },
+ PREREQ_PM => {
+ 'parent' => 0,
+ 'strict' => 0,
+ 'warnings' => 0,
+ 'App::AWS::CloudWatch::Monitor' => 0,
+ },
+
+ test => {
+ TESTS => 't/*.t',
+ },
+);
commit c636150254ec219312e4f25d6b60c13238ff09f4
Author: Blaine Motsinger <blaine at bestpractical.com>
Date: Fri Jan 21 14:26:03 2022 -0600
Add load and author tests
diff --git a/t/00_load.t b/t/00_load.t
new file mode 100644
index 0000000..ec56611
--- /dev/null
+++ b/t/00_load.t
@@ -0,0 +1,37 @@
+use strict;
+use warnings;
+
+use FindBin;
+use File::Find ();
+use File::Spec ();
+use Test::More;
+
+foreach my $module (find_all_perl_modules()) {
+ use_ok($module) or BAIL_OUT;
+}
+
+done_testing();
+
+sub find_all_perl_modules {
+ my $base = "$FindBin::RealBin/../";
+
+ my @modules;
+ File::Find::find(
+ sub {
+ my $file = $File::Find::name;
+ return unless $file =~ /\.pm$/;
+ return if $file =~ /Test/;
+
+ my $rel_path = File::Spec->abs2rel( $file, $base );
+ return if $rel_path =~ /^blib/;
+ $rel_path =~ s/^[t\/]*lib\///;
+ $rel_path =~ s/\//::/g;
+ $rel_path =~ s/\.pm$//;
+
+ push( @modules, $rel_path );
+ },
+ $base,
+ );
+
+ return @modules;
+}
diff --git a/t/996_perl-tidy.t b/t/996_perl-tidy.t
new file mode 100644
index 0000000..d4a8a51
--- /dev/null
+++ b/t/996_perl-tidy.t
@@ -0,0 +1,22 @@
+use strict;
+use warnings;
+
+use FindBin;
+use Test::More;
+
+unless ( $ENV{TEST_AUTHOR} ) {
+ my $msg = 'Author test. Set $ENV{TEST_AUTHOR} to a true value to run.';
+ plan( skip_all => $msg );
+}
+
+eval { require Test::PerlTidy; };
+
+if ($@) {
+ my $msg = 'Test::PerlTidy required to criticise code';
+ plan( skip_all => $msg );
+}
+
+Test::PerlTidy::run_tests(
+ path => "$FindBin::RealBin/../lib",
+ perltidyrc => "$FindBin::RealBin/perltidyrc",
+);
diff --git a/t/997_perl-critic.t b/t/997_perl-critic.t
new file mode 100644
index 0000000..40637c2
--- /dev/null
+++ b/t/997_perl-critic.t
@@ -0,0 +1,23 @@
+use strict;
+use warnings;
+
+use FindBin;
+use File::Spec;
+use Test::More;
+
+unless ( $ENV{TEST_AUTHOR} ) {
+ my $msg = 'Author test. Set $ENV{TEST_AUTHOR} to a true value to run.';
+ plan( skip_all => $msg );
+}
+
+eval { require Test::Perl::Critic; };
+
+if ($@) {
+ my $msg = 'Test::Perl::Critic required to criticise code';
+ plan( skip_all => $msg );
+}
+
+my $rcfile = File::Spec->catfile( 't', 'perlcriticrc' );
+Test::Perl::Critic->import( -profile => $rcfile );
+
+all_critic_ok("$FindBin::RealBin/../lib");
diff --git a/t/998_pod-checker.t b/t/998_pod-checker.t
new file mode 100644
index 0000000..503ec4d
--- /dev/null
+++ b/t/998_pod-checker.t
@@ -0,0 +1,19 @@
+use strict;
+use warnings;
+
+use FindBin;
+use Test::More;
+
+unless ( $ENV{TEST_AUTHOR} ) {
+ my $msg = 'Author test. Set $ENV{TEST_AUTHOR} to a true value to run.';
+ plan( skip_all => $msg );
+}
+
+eval { require Test::Pod; };
+
+if ($@) {
+ my $msg = 'Test::Pod required to criticise code';
+ plan( skip_all => $msg );
+}
+
+Test::Pod::all_pod_files_ok( Test::Pod::all_pod_files("$FindBin::RealBin/../lib") );
diff --git a/t/999_pod-coverage.t b/t/999_pod-coverage.t
new file mode 100644
index 0000000..77ab714
--- /dev/null
+++ b/t/999_pod-coverage.t
@@ -0,0 +1,18 @@
+use strict;
+use warnings;
+
+use Test::More;
+
+unless ( $ENV{TEST_AUTHOR} ) {
+ my $msg = 'Author test. Set $ENV{TEST_AUTHOR} to a true value to run.';
+ plan( skip_all => $msg );
+}
+
+eval { require Test::Pod::Coverage; };
+
+if ($@) {
+ my $msg = 'Test::Pod::Coverage required to criticise code';
+ plan( skip_all => $msg );
+}
+
+Test::Pod::Coverage::all_pod_coverage_ok();
diff --git a/t/perlcriticrc b/t/perlcriticrc
new file mode 100644
index 0000000..b410ee0
--- /dev/null
+++ b/t/perlcriticrc
@@ -0,0 +1,204 @@
+### PERLCRITIC OPTIONS
+color = 1
+verbose = %m at %f line %l [%p]\n
+severity = 2
+force = 1
+
+
+### POLICY SETTINGS
+# we don't unpack @_ right away as we mostly use named vars with defaults
+[-Subroutines::RequireArgUnpacking]
+
+# errstr for DBI is okay, and probably others since I like that convention.
+[-Variables::ProhibitPackageVars]
+#packages = DBI
+
+# HEREDOC doesn't adhere to my tidy eye
+[-ValuesAndExpressions::ProhibitImplicitNewlines]
+
+# don't require extended format for shortish regex
+# keeping this in here for documentation purposes
+[-RegularExpressions::RequireExtendedFormatting]
+#minimum_regex_length_to_complain_about = 60
+
+# don't require Carp
+[-ErrorHandling::RequireCarping]
+
+# postfix is okay, unless it's really weird
+[-ControlStructures::ProhibitPostfixControls]
+
+# needless ruleset for modern Perl versions
+[-ValuesAndExpressions::ProhibitInterpolationOfLiterals]
+
+# don't use backticks
+[InputOutput::ProhibitBacktickOperators]
+only_in_void_context = 1
+
+# 3 arg open is modern Perl
+[InputOutput::ProhibitTwoArgOpen]
+
+# close filehandles as soon as possible after opening them.
+[InputOutput::RequireBriefOpen]
+lines = 17
+
+# forbid a bare `## no critic'
+# shouldn't be turning off critic anyway
+[Miscellanea::ProhibitUnrestrictedNoCritic]
+
+# Minimize complexity in code that is outside of subroutines.
+[-Modules::ProhibitExcessMainComplexity]
+max_mccabe = 28
+
+# write `require Module' instead of `require 'Module.pm''.
+[Modules::RequireBarewordIncludes]
+
+# end each module with an explicitly `1;' instead of some funky expression.
+# sorry Charles ;)
+[Modules::RequireEndWithOne]
+
+# always make the 'package' explicit.
+[Modules::RequireExplicitPackage]
+
+# package declaration must match filename.
+[Modules::RequireFilenameMatchesPackage]
+
+# Give every module a `$VERSION' number.
+[Modules::RequireVersionVar]
+
+# don't use vague variable or subroutine names like 'last' or 'record'.
+[NamingConventions::ProhibitAmbiguousNames]
+forbid = last left right no abstract contract record second close
+
+# write `@{ $array_ref }' instead of `@$array_ref'.
+# consistency mostly. I don't really care either way, but should be consistent.
+[References::ProhibitDoubleSigils]
+
+## REGEX
+[RegularExpressions::ProhibitUnusedCapture]
+[RegularExpressions::ProhibitUnusualDelimiters]
+[-RegularExpressions::RequireDotMatchAnything]
+[-RegularExpressions::RequireLineBoundaryMatching]
+[-RegularExpressions::ProhibitEnumeratedClasses]
+[-RegularExpressions::ProhibitFixedStringMatches]
+
+# don't name things the same as other things
+[Subroutines::ProhibitBuiltinHomonyms]
+
+# too many arguments
+[Subroutines::ProhibitManyArgs]
+
+# don't write `sub my_function (@@) {}'.
+[Subroutines::ProhibitSubroutinePrototypes]
+
+# prevent unused private subroutines.
+[Subroutines::ProhibitUnusedPrivateSubroutines]
+
+# prevent access to private subs in other packages.
+[Subroutines::ProtectPrivateSubs]
+
+# end every path through a subroutine with an explicit `return' statement.
+[Subroutines::RequireFinalReturn]
+
+# shouldn't be turning these off or not defining these
+[TestingAndDebugging::ProhibitNoStrict]
+[TestingAndDebugging::ProhibitNoWarnings]
+[TestingAndDebugging::RequireUseStrict]
+[TestingAndDebugging::RequireUseWarnings]
+
+# unless is okay sometimes
+[-ControlStructures::ProhibitUnlessBlocks]
+
+# don't require constants inplace of magic variables
+# I'm still on the fence about this
+[-ValuesAndExpressions::ProhibitMagicNumbers]
+
+# don't prohibit constant pragma
+[-ValuesAndExpressions::ProhibitConstantPragma]
+
+# don't prohibit long numbers
+[-ValuesAndExpressions::RequireNumberSeparators]
+
+# don't require check of close
+[-InputOutput::RequireCheckedClose]
+
+# allow error strings from syscalls
+[Variables::ProhibitPunctuationVars]
+allow = $! $0
+
+# don't care about noisy quotes
+[-ValuesAndExpressions::ProhibitNoisyQuotes]
+
+# don't care about empty quotes
+[-ValuesAndExpressions::ProhibitEmptyQuotes]
+
+# set sub complexity to 30
+[Subroutines::ProhibitExcessComplexity]
+max_mccabe = 30
+
+# dont prohibit C style for loops
+[-ControlStructures::ProhibitCStyleForLoops]
+
+
+## TODO: re-evaluate these
+# when working on old modules, export is okay
+[-Modules::ProhibitAutomaticExportation]
+
+# Write ` !$foo && $bar || $baz ' instead of ` not $foo && $bar or $baz'.
+[ValuesAndExpressions::ProhibitMixedBooleanOperators]
+
+# Use `my' instead of `local', except when you have to.
+[Variables::ProhibitLocalVars]
+
+# Don't ask for storage you don't need.
+[Variables::ProhibitUnusedVariables]
+
+# don't use 'grep' in void contexts.
+[BuiltinFunctions::ProhibitVoidGrep]
+
+# don't use 'map' in void contexts.
+[BuiltinFunctions::ProhibitVoidMap]
+
+# don't use 'grep' in boolean context
+[BuiltinFunctions::ProhibitBooleanGrep]
+
+# Write `bless {}, $class;' instead of just `bless {};'.
+[ClassHierarchies::ProhibitOneArgBless]
+
+# Use spaces instead of tabs.
+[CodeLayout::ProhibitHardTabs]
+
+# Don't use whitespace at the end of lines.
+[CodeLayout::ProhibitTrailingWhitespace]
+
+# Use the same newline through the source.
+[CodeLayout::RequireConsistentNewlines]
+
+# Must run code through perltidy.
+[CodeLayout::RequireTidyCode]
+
+# Put a comma at the end of every multi-line list declaration, including the last one.
+[CodeLayout::RequireTrailingCommas]
+
+# Don't write long "if-elsif-elsif-elsif-elsif...else" chains.
+[ControlStructures::ProhibitCascadingIfElse]
+
+# Don't use operators like `not', `!~', and `le' within `until' and `unless'.
+[ControlStructures::ProhibitNegativeExpressionsInUnlessAndUntilConditions]
+
+# Don't write code after an unconditional `die, exit, or next'.
+[ControlStructures::ProhibitUnreachableCode]
+
+
+## POD
+# The `=head1 NAME' section should match the package.
+# [Documentation::RequirePackageMatchesPodName]
+
+# All POD should be after `__END__'.
+# [Documentation::RequirePodAtEnd]
+
+# Organize your POD into the customary sections.
+[-Documentation::RequirePodSections]
+
+# Don't require links to have text.
+# links to perl man pages are self explanatory.
+[-Documentation::RequirePodLinksIncludeText]
diff --git a/t/perltidyrc b/t/perltidyrc
new file mode 100644
index 0000000..4348b2a
--- /dev/null
+++ b/t/perltidyrc
@@ -0,0 +1,34 @@
+-l=140 # Max line width is 140 cols
+-i=4 # Indent level is 4 cols
+-ci=4 # Continuation indent is 4 cols
+-vt=4 # Maximal vertical tightness
+-cti=0 # No extra indentation for closing brackets
+-pt=1 # Medium parenthesis tightness
+-sbt=1 # Medium square bracket tightness
+-bt=1 # Medium brace tightness (for non-code blocks)
+-bbt=1 # Medium block brace tightness (for code blocks)
+--nospace-for-semicolon
+-nolq # Don't outdent long quoted strings
+ # Break before all operators:
+-wbb="% + - * / x != == >= <= =~ < > | & **= += *= &= <<= &&= -= /= |= >>= ||= .= %= ^= x="
+
+-fpsc=0 # Don't try to line up all comments to a fixed column
+-hsc # Align hanging side comments
+-bbs # Ensure a blank line before every sub definition (except one-liners)
+-bbb # Ensure a blank line before code blocks (for, while, if, ....)
+
+-bar # K&R style code braces
+-nolc # Long comments indented, even when this make the total line length "too long"
+-noll # Long lines indented, even when this make the total line length "too long"
+-nola # Don't treat labels as special cases when indenting
+
+-nst # Do NOT output to STDOUT (since we want to use -b)
+-b # Backup the input file to .bak and perform all tidying in the original file
+-se # Write errors to STDERR
+
+-it=4 # iterations
+--block-brace-vertical-tightness=1
+--nospace-terminal-semicolon
+--noadd-semicolons
+-nbl # --noopening-brace-on-new-line
+--backup-file-extension=/ # delete bak file
commit 78cb6f4624152e65180faa8104d1fd8b993a613a
Author: Blaine Motsinger <blaine at bestpractical.com>
Date: Fri Jan 21 14:18:53 2022 -0600
Update documentation
diff --git a/README b/README
index 835e0d4..d0155fc 100644
--- a/README
+++ b/README
@@ -10,11 +10,12 @@ SYNOPSIS
DESCRIPTION
"App::AWS::CloudWatch::Monitor::Check::Fail2Ban" is a
- "App::AWS::CloudWatch::Monitor::Check" module which gathers fail2ban
- jail metrics.
+ App::AWS::CloudWatch::Monitor::Check module which gathers fail2ban jail
+ metrics.
METRICS
- The following metrics are gathered and returned.
+ Data for this check is read from fail2ban-client(1). The following
+ metrics are returned.
fail2ban-CurrentlyBanned
The cumulative currently banned for all active jails.
@@ -28,13 +29,13 @@ METHODS
keys "MetricName", "Unit", "RawValue".
DEPENDENCIES
- <App::AWS::CloudWatch::Monitor::Check::Fail2Ban> depends on the external
- program, "fail2ban-client".
+ "App::AWS::CloudWatch::Monitor::Check::Fail2Ban" depends on the external
+ program, fail2ban-client(1).
KNOWN ISSUES
- "fail2ban-client" requires root privileges to read the logfiles. This
+ fail2ban-client(1) requires root privileges to read the logfiles. This
check must also be run with root privileges because of its dependency on
- "fail2ban-client".
+ fail2ban-client(1).
Permission denied to socket: /var/run/fail2ban/fail2ban.sock, (you must be root)
diff --git a/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm b/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
index 51a5d7d..c9b7566 100644
--- a/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
+++ b/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
@@ -91,11 +91,11 @@ App::AWS::CloudWatch::Monitor::Check::Fail2Ban - gather fail2ban jail metrics
=head1 DESCRIPTION
-C<App::AWS::CloudWatch::Monitor::Check::Fail2Ban> is a C<App::AWS::CloudWatch::Monitor::Check> module which gathers fail2ban jail metrics.
+C<App::AWS::CloudWatch::Monitor::Check::Fail2Ban> is a L<App::AWS::CloudWatch::Monitor::Check> module which gathers fail2ban jail metrics.
=head1 METRICS
-The following metrics are gathered and returned.
+Data for this check is read from L<fail2ban-client(1)>. The following metrics are returned.
=over
@@ -121,11 +121,11 @@ Gathers the metric data and returns an arrayref of hashrefs with keys C<MetricNa
=head1 DEPENDENCIES
-<App::AWS::CloudWatch::Monitor::Check::Fail2Ban> depends on the external program, C<fail2ban-client>.
+C<App::AWS::CloudWatch::Monitor::Check::Fail2Ban> depends on the external program, L<fail2ban-client(1)>.
=head1 KNOWN ISSUES
-C<fail2ban-client> requires root privileges to read the logfiles. This check must also be run with root privileges because of its dependency on C<fail2ban-client>.
+L<fail2ban-client(1)> requires root privileges to read the logfiles. This check must also be run with root privileges because of its dependency on L<fail2ban-client(1)>.
Permission denied to socket: /var/run/fail2ban/fail2ban.sock, (you must be root)
commit 1c6cbec2e3380798fdd6e6d7af29cb3dde4b259e
Author: Blaine Motsinger <blaine at bestpractical.com>
Date: Wed Nov 24 18:32:04 2021 -0600
Add initial check module
diff --git a/README b/README
index a5064e7..835e0d4 100644
--- a/README
+++ b/README
@@ -1,3 +1,40 @@
NAME
App::AWS::CloudWatch::Monitor::Check::Fail2Ban - gather fail2ban jail
metrics
+
+SYNOPSIS
+ my $plugin = App::AWS::CloudWatch::Monitor::Check::Fail2Ban->new();
+ my $metrics = $plugin->check();
+
+ aws-cloudwatch-monitor --check Fail2Ban
+
+DESCRIPTION
+ "App::AWS::CloudWatch::Monitor::Check::Fail2Ban" is a
+ "App::AWS::CloudWatch::Monitor::Check" module which gathers fail2ban
+ jail metrics.
+
+METRICS
+ The following metrics are gathered and returned.
+
+ fail2ban-CurrentlyBanned
+ The cumulative currently banned for all active jails.
+
+ fail2ban-TotalBanned
+ The cumulative total banned for all active jails.
+
+METHODS
+ check
+ Gathers the metric data and returns an arrayref of hashrefs with
+ keys "MetricName", "Unit", "RawValue".
+
+DEPENDENCIES
+ <App::AWS::CloudWatch::Monitor::Check::Fail2Ban> depends on the external
+ program, "fail2ban-client".
+
+KNOWN ISSUES
+ "fail2ban-client" requires root privileges to read the logfiles. This
+ check must also be run with root privileges because of its dependency on
+ "fail2ban-client".
+
+ Permission denied to socket: /var/run/fail2ban/fail2ban.sock, (you must be root)
+
diff --git a/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm b/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
new file mode 100644
index 0000000..51a5d7d
--- /dev/null
+++ b/lib/App/AWS/CloudWatch/Monitor/Check/Fail2Ban.pm
@@ -0,0 +1,132 @@
+package App::AWS::CloudWatch::Monitor::Check::Fail2Ban;
+
+use strict;
+use warnings;
+
+use parent 'App::AWS::CloudWatch::Monitor::Check';
+
+our $VERSION = '0.01';
+
+sub check {
+ my $self = shift;
+
+ my @fail2ban_jails_command = ( '/usr/bin/fail2ban-client', 'status' );
+ my ( $exit, $stdout, $stderr ) = $self->run_command( \@fail2ban_jails_command );
+
+ if ($exit) {
+ die "$stderr\n";
+ }
+
+ return unless $stdout;
+
+ my @jails;
+ foreach my $line ( @{$stdout} ) {
+ next unless $line =~ qr/Jail list/;
+
+ # `- Jail list: http-one, http-two, http-three
+ $line =~ s/^`-\s+Jail\s+list:\s+//g;
+
+ # http-one, http-two, http-three
+ push @jails, split /,\s+/, $line;
+ }
+
+ my $currently_banned = 0;
+ my $total_banned = 0;
+ foreach my $jail (@jails) {
+ ( $exit, $stdout, $stderr ) = $self->run_command( [ @fail2ban_jails_command, $jail ] );
+
+ if ($exit) {
+ die "$stderr\n";
+ }
+
+ return unless $stdout;
+
+ foreach my $line ( @{$stdout} ) {
+ if ( $line =~ qr/Currently banned/ ) {
+
+ # |- Currently banned: 1485
+ if ( $line =~ /(\d+)$/ ) {
+ $currently_banned += $1;
+ }
+ }
+
+ if ( $line =~ qr/Total banned/ ) {
+
+ # |- Total banned: 3326
+ if ( $line =~ /(\d+)$/ ) {
+ $total_banned += $1;
+ }
+ }
+ }
+ }
+
+ return [
+ { MetricName => 'fail2ban-CurrentlyBanned',
+ Unit => 'Count',
+ RawValue => $currently_banned,
+ },
+ { MetricName => 'fail2ban-TotalBanned',
+ Unit => 'Count',
+ RawValue => $total_banned,
+ },
+ ];
+}
+
+1;
+
+__END__
+
+=pod
+
+=head1 NAME
+
+App::AWS::CloudWatch::Monitor::Check::Fail2Ban - gather fail2ban jail metrics
+
+=head1 SYNOPSIS
+
+ my $plugin = App::AWS::CloudWatch::Monitor::Check::Fail2Ban->new();
+ my $metrics = $plugin->check();
+
+ aws-cloudwatch-monitor --check Fail2Ban
+
+=head1 DESCRIPTION
+
+C<App::AWS::CloudWatch::Monitor::Check::Fail2Ban> is a C<App::AWS::CloudWatch::Monitor::Check> module which gathers fail2ban jail metrics.
+
+=head1 METRICS
+
+The following metrics are gathered and returned.
+
+=over
+
+=item fail2ban-CurrentlyBanned
+
+The cumulative currently banned for all active jails.
+
+=item fail2ban-TotalBanned
+
+The cumulative total banned for all active jails.
+
+=back
+
+=head1 METHODS
+
+=over
+
+=item check
+
+Gathers the metric data and returns an arrayref of hashrefs with keys C<MetricName>, C<Unit>, C<RawValue>.
+
+=back
+
+=head1 DEPENDENCIES
+
+<App::AWS::CloudWatch::Monitor::Check::Fail2Ban> depends on the external program, C<fail2ban-client>.
+
+=head1 KNOWN ISSUES
+
+C<fail2ban-client> requires root privileges to read the logfiles. This check must also be run with root privileges because of its dependency on C<fail2ban-client>.
+
+ Permission denied to socket: /var/run/fail2ban/fail2ban.sock, (you must be root)
+
+=cut
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