( C’est instable … sniff ) 

Installation de Munin Server sur MacOS.

Etape n°1 : Installation de MacPorts :

Le lien : https://www.macports.org/install.php pour le téléchargement : macOS High Sierra v10.13

Etape n°2 : Installation de la partie serveur :

Installation

# sudo port install munin +server
Password:
Warning: xcodebuild exists but failed to execute
Warning: Xcode does not appear to be installed; most ports will likely fail to build.
--->  Computing dependencies for munin
The following dependencies will be installed:
...
Continue? [Y/n]: Y
...
--->  Extracting munin
--->  Applying patches to munin
--->  Configuring munin
--->  Building munin
--->  Staging munin into destroot
###########################################################
# A startup item has been generated that will cause the
# Munin server to fetch data from all nodes every 5 mins.
# It is disabled by default, please execute the following
# command to enable:
#
# sudo launchctl load -w /Library/LaunchDaemons/org.macports.munin-cron.plist
###########################################################
--->  Creating launchd control script 'munin-node'
--->  Installing munin @1.4.7_6+server
--->  Activating munin @1.4.7_6+server
--->  Cleaning munin
--->  Updating database of binaries
--->  Updating database of C++ stdlib usage              
--->  Scanning binaries for linking errors
--->  No broken files found.
--->  No broken ports found.
--->  Some of the ports you installed have notes:
  libidn has the following notes:
    Please be aware that GNU libidn2 is the successor of GNU libidn. It comes
    with IDNA 2008  
    and TR46 implementations and also provides a compatibility layer for GNU
    libidn.
  munin has the following notes:
    To detect supported Munin plugins please use the following command:
    
    sudo -u munin munin-node-configure --suggest --shell | sudo sh

    A startup item has been generated that will aid in starting munin with
    launchd. It is disabled by default. Execute the following command to start
    it, and to cause it to launch at startup:
    
        sudo port load munin
  python27 has the following notes:
    To make this the default Python or Python 2 (i.e., the version run by the
    'python' or 'python2' commands), run one or both of:
    
        sudo port select --set python python27
        sudo port select --set python2 python27

# sudo port install munin
--->  Fetching distfiles for munin
--->  Verifying checksums for munin
--->  Extracting munin
--->  Applying patches to munin
--->  Configuring munin
--->  Building munin
--->  Staging munin into destroot
--->  Creating launchd control script 'munin-node'
--->  Installing munin @1.4.7_6
--->  Unloading startupitem 'munin-node' for munin
--->  Deactivating munin @1.4.7_6+server
--->  Cleaning munin
--->  Activating munin @1.4.7_6
--->  Cleaning munin
--->  Scanning binaries for linking errors
--->  No broken files found.
--->  No broken ports found.
--->  Some of the ports you installed have notes:
  munin has the following notes:
    To detect supported Munin plugins please use the following command:
    
    sudo -u munin munin-node-configure --suggest --shell | sudo sh

    A startup item has been generated that will aid in starting munin with launchd. It is disabled by default. Execute the following command to start
    it, and to cause it to launch at startup:
    
        sudo port load munin
# sudo -u munin munin-node-configure --suggest --shell 
# The following plugins caused errors:
# apache_processes:
# 	Non-zero exit during autoconf (255)
# if_:
# 	Timed out during suggest
# 	No valid suggestions
# if_err_:
# 	Timed out during suggest
# 	No valid suggestions
# mysql_:
# 	Non-zero exit during autoconf (2)
# slony_lag_:
# 	Non-zero exit during autoconf (2)
# varnish_:
# 	Non-zero exit during autoconf (255)

Je supprime le –shell :

$ sudo -u munin munin-node-configure --suggest 
Plugin                     | Used | Suggestions                            
------                     | ---- | -----------                            
amavis                     | no   | no                                     
apache_accesses            | no   | no [LWP::UserAgent not found]          
apache_processes           | no   | no                                     
apache_volume              | no   | no [LWP::UserAgent not found]          
apc_envunit_               | no   | no [no units to monitor]               
courier_mta_mailqueue      | no   | no [spooldir not found]                
courier_mta_mailstats      | no   | no [could not find executable]         
courier_mta_mailvolume     | no   | no [could not find executable]         
cupsys_pages               | no   | no [logfile not found]                 
df                         | yes  | yes                                    
df_inode                   | yes  | yes                                    
exim_mailqueue             | no   | no [no exiqgrep]                       
exim_mailstats             | no   | no ['/usr/sbin/exim -bP log_file_path' returned an error]
fail2ban                   | no   | no [/usr/bin/fail2ban-client not found]
hddtemp_smartctl           | no   | no [smartctl not found]                
http_loadtime              | no   | no [need time and wget programs]       
if_                        | no   | yes                                    
if_err_                    | no   | yes                                    
jmx_                       | no   | no [connection to 127.0.0.1:5400 failed]
load                       | yes  | yes                                    
lpstat                     | yes  | yes                                    
munin_stats                | yes  | no [munin-update was not found at /opt/local/lib/munin/munin-update]
mysql_                     | no   | no                                     
netstat                    | yes  | yes                                    
nginx_request              | no   | no [LWP::UserAgent not found]          
nginx_status               | no   | no [LWP::UserAgent not found]          
ntp_kernel_err             | no   | no                                     
ntp_kernel_pll_freq        | no   | no                                     
ntp_kernel_pll_off         | no   | no                                     
ntp_offset                 | yes  | yes                                    
nvidia_                    | no   | no [no nvclock executable at /usr/bin/nvclock, please configure]
postfix_mailqueue          | yes  | yes                                    
postfix_mailvolume         | no   | no [logfile '/var/log/syslog' not found]
postgres_bgwriter          | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_cache_            | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_checkpoints       | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_connections_      | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_connections_db    | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_locks_            | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_querylength_      | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_scans_            | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_size_             | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_transactions_     | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_tuples_           | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_users             | no   | no [DBD::Pg not found, and cannot do psql yet]
postgres_xlog              | no   | no [DBD::Pg not found, and cannot do psql yet]
processes                  | yes  | yes                                    
ps_                        | no   | no                                     
qmailqstat                 | no   | no                                     
sendmail_mailqueue         | no   | no                                     
sendmail_mailstats         | no   | no [no mailstats command]              
sendmail_mailtraffic       | no   | no [no mailstats command]              
slapd_                     | no   | no [Net::LDAP not found]               
slapd_bdb_cache_           | no   | no [Can't execute db_stat file '/usr/bin/db4.6_stat']
slony_lag_                 | no   | no                                     
smart_                     | no   | no [smartmontools not found]           
snort_alerts               | no   | no [/var/snort/snort.stats not readable]
snort_bytes_pkt            | no   | no [/var/snort/snort.stats not readable]
snort_drop_rate            | no   | no [/var/snort/snort.stats not readable]
snort_pattern_match        | no   | no [/var/snort/snort.stats not readable]
snort_pkts                 | no   | no [/var/snort/snort.stats not readable]
snort_traffic              | no   | no [/var/snort/snort.stats not readable]
squeezebox_                | no   | no [no connection on localhost port 9090]
squid_cache                | no   | no [could not connect: Connection refused]
squid_objectsize           | no   | no [could not connect: Connection refused]
squid_requests             | no   | no [could not connect: Connection refused]
squid_traffic              | no   | no [could not connect: Connection refused]
tomcat_                    | no   | no                                     
users                      | yes  | yes                                    
varnish_                   | no   | no                                     
vmstat                     | no   | no [could not run "vmstat"]            
zimbra_                    | no   | no [No Text::CSV_XS]                   
# The following plugins caused errors:
# apache_processes:
# 	Non-zero exit during autoconf (255)
# if_:
# 	Timed out during suggest
# 	No valid suggestions
# if_err_:
# 	Timed out during suggest
# 	No valid suggestions
# mysql_:
# 	Non-zero exit during autoconf (2)
# slony_lag_:
# 	Non-zero exit during autoconf (2)
# varnish_:
# 	Non-zero exit during autoconf (255)


# sudo port install munin
Warning: xcodebuild exists but failed to execute
Warning: Xcode does not appear to be installed; most ports will likely fail to build.
--->  Computing dependencies for munin
--->  Cleaning munin
--->  Scanning binaries for linking errors
--->  No broken files found.

A noter l’avertissement suivant :

Il faut donc comprendre l’erreur avec Apache qui empêche de faire la configuration, c’est surement que je n’ai pas autoconf :

# brew install autoconf automake libtool
...
==> Caveats
In order to prevent conflicts with Apple's own libtool we have prepended a "g"
so, you have instead: glibtool and glibtoolize.
==> Summary
?  /usr/local/Cellar/libtool/2.4.6_1: 71 files, 3.7MB
==> Caveats
==> autoconf
Emacs Lisp files have been installed to:
  /usr/local/share/emacs/site-lisp/autoconf
==> libtool
In order to prevent conflicts with Apple's own libtool we have prepended a "g"
so, you have instead: glibtool and glibtoolize.

# brew install rrdtool
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
==> Updated Formulae
cromwell              fn                    glide                 kubernetes-helm       llnode                nifi-registry         pre-commit

==> Installing dependencies for rrdtool: gettext, libffi, pcre, glib, libpng, freetype, fontconfig, pixman, cairo, fribidi, graphite2, icu4c, harfbuzz, pango
...
?  /usr/local/Cellar/rrdtool/1.7.0_1: 155 files, 3MB
==> Caveats
==> gettext
gettext is keg-only, which means it was not symlinked into /usr/local,
because macOS provides the BSD gettext library & some software gets confused if both are in the library path.

If you need to have gettext first in your PATH run:
  echo 'export PATH="/usr/local/opt/gettext/bin:$PATH"' >> ~/.bash_profile

For compilers to find gettext you may need to set:
  export LDFLAGS="-L/usr/local/opt/gettext/lib"
  export CPPFLAGS="-I/usr/local/opt/gettext/include"

==> libffi
libffi is keg-only, which means it was not symlinked into /usr/local,
because some formulae require a newer version of libffi.

For compilers to find libffi you may need to set:
  export LDFLAGS="-L/usr/local/opt/libffi/lib"

For pkg-config to find libffi you may need to set:
  export PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig"

==> icu4c
icu4c is keg-only, which means it was not symlinked into /usr/local,
because macOS provides libicucore.dylib (but nothing else).

If you need to have icu4c first in your PATH run:
  echo 'export PATH="/usr/local/opt/icu4c/bin:$PATH"' >> ~/.bash_profile
  echo 'export PATH="/usr/local/opt/icu4c/sbin:$PATH"' >> ~/.bash_profile

For compilers to find icu4c you may need to set:
  export LDFLAGS="-L/usr/local/opt/icu4c/lib"
  export CPPFLAGS="-I/usr/local/opt/icu4c/include"

For pkg-config to find icu4c you may need to set:
  export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"


$ sudo -u munin munin-node-configure --suggest --shell 
# The following plugins caused errors:
# apache_processes:
# 	Non-zero exit during autoconf (255)
# if_:
# 	Timed out during suggest
# 	No valid suggestions
# if_err_:
# 	Timed out during suggest
# 	No valid suggestions
# mysql_:
# 	Non-zero exit during autoconf (2)
# slony_lag_:
# 	Non-zero exit during autoconf (2)
# varnish_:
# 	Non-zero exit during autoconf (255)

Si je regarde la liste des plugins :

$ ls -l /opt/local/etc/munin/plugins/*
lrwxr-xr-x  1 root  admin  31 26 sep 17:19 /opt/local/etc/munin/plugins/df -> /opt/local/lib/munin/plugins/df
lrwxr-xr-x  1 root  admin  37 26 sep 17:19 /opt/local/etc/munin/plugins/df_inode -> /opt/local/lib/munin/plugins/df_inode
lrwxr-xr-x  1 root  admin  33 26 sep 17:19 /opt/local/etc/munin/plugins/load -> /opt/local/lib/munin/plugins/load
lrwxr-xr-x  1 root  admin  35 26 sep 17:19 /opt/local/etc/munin/plugins/lpstat -> /opt/local/lib/munin/plugins/lpstat
lrwxr-xr-x  1 root  admin  40 26 sep 17:19 /opt/local/etc/munin/plugins/munin_stats -> /opt/local/lib/munin/plugins/munin_stats
lrwxr-xr-x  1 root  admin  36 26 sep 17:19 /opt/local/etc/munin/plugins/netstat -> /opt/local/lib/munin/plugins/netstat
lrwxr-xr-x  1 root  admin  39 26 sep 17:19 /opt/local/etc/munin/plugins/ntp_offset -> /opt/local/lib/munin/plugins/ntp_offset
lrwxr-xr-x  1 root  admin  46 26 sep 17:19 /opt/local/etc/munin/plugins/postfix_mailqueue -> /opt/local/lib/munin/plugins/postfix_mailqueue
lrwxr-xr-x  1 root  admin  38 26 sep 17:19 /opt/local/etc/munin/plugins/processes -> /opt/local/lib/munin/plugins/processes
lrwxr-xr-x  1 root  admin  34 26 sep 17:19 /opt/local/etc/munin/plugins/users -> /opt/local/lib/munin/plugins/users

Je supprime lpstat & ntp_offset:

$ sudo /opt/local/etc/munin/plugins/lpstat 
Password:
lpstat: No destinations added.
lpstat: No destinations added.
$ sudo rm /opt/local/etc/munin/plugins/lpstat
$ sudo /opt/local/etc/munin/plugins/ntp_offset 
ntpq: read: Connection refused
delay.value U
offset.value U
jitter.value U
$ sudo rm /opt/local/etc/munin/plugins/ntp_offset

Ensuite il faut lancer Apache :

# sudo apachectl -k restart

Il suffit de faire le test suivant : http://127.0.0.1/ .

Attention sur mon installation j’ai déjà JAVA, XCODE, APACHE .

$ java -version
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
$ xcode-select -version
xcode-select version 2349.
$ apachectl -version
Server version: Apache/2.4.33 (Unix)
Server built:   Apr  3 2018 23:45:11

Pour information les fichiers de configuration sont :

• /opt/local/etc/munin/munin.conf
• /opt/local/etc/munin/munin-node.conf

Les donnes sont dans :

• /opt/local/var/munin

Le WWW pour afficher les données sont dans :

• /opt/local/www/munin/

Les fichiers de logs :

• /opt/local/var/log/munin/munin-node.log

Les binaires (en perl) :

• /opt/local/sbin/

Ensuite il faut donc modifier le fichier de configuration : /etc/apache2/httpd.conf

….

On fait un test manuel sur Munin :

$ telnet 127.0.0.1 4949
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
# munin node at XXXXXX.local
list
df df_inode load munin_stats netstat postfix_mailqueue processes users
fetch netstat
resets.value 0
failed.value 0
.

Pour faire un test en temps que root (déconseillé) :

$ sudo mkdir /plugins/
$ sudo ln -s /opt/local/lib/munin/plugins/plugin.sh /plugins/plugin.sh
$ sudo /opt/local/etc/munin/plugins/load 
load.value 1,59

Sinon on a l’erreur :

$ /opt/local/etc/munin/plugins/df
/opt/local/etc/munin/plugins/df: line 24: /plugins/plugin.sh: No such file or directory

La méthode plus propre est la suivante :

$ sudo /opt/local/sbin/munin-run df autoconf --debug
# Setting up environment
# About to run '/opt/local/etc/munin/plugins/df autoconf'
yes
$ sudo /opt/local/sbin/munin-run df config --debug
# Setting up environment
# About to run '/opt/local/etc/munin/plugins/df config'
graph_title Filesystem usage (in %)
graph_args --upper-limit 100 -l 0
graph_vlabel %
graph_scale no
_dev_disk1s1.label /
_dev_disk1s4.label /private/var/vm
$ sudo /opt/local/sbin/munin-run df --debug
# Setting up environment
# About to run '/opt/local/etc/munin/plugins/df'
_dev_disk1s1.value 92
_dev_disk1s4.value 6

A noter que pour l’instant ce n’est pas stable !!! J’ai du ma à comprendre.

Mes fichiers :

$ sudo cat /Library/LaunchDaemons/org.macports.munin-node.plist 
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd" >
<plist version='1.0'>
<dict>
<key>Label</key><string>org.macports.munin-node</string>
<key>ProgramArguments</key>
<array>
	<string>/opt/local/bin/daemondo</string>
	<string>--label=munin-node</string>
	<string>--start-cmd</string>
	<string>/opt/local/etc/LaunchDaemons/org.macports.munin-node/munin-node.wrapper</string>
	<string>start</string>
	<string>;</string>
	<string>--stop-cmd</string>
	<string>/opt/local/etc/LaunchDaemons/org.macports.munin-node/munin-node.wrapper</string>
	<string>stop</string>
	<string>;</string>
	<string>--restart-cmd</string>
	<string>/opt/local/etc/LaunchDaemons/org.macports.munin-node/munin-node.wrapper</string>
	<string>restart</string>
	<string>;</string>
	<string>--pid=none</string>
</array>
<key>Disabled</key><true/>
<key>KeepAlive</key><true/>
</dict>
</plist>

$ sudo cat /Library/LaunchDaemons/org.macports.munin-cron.plist 
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd" >
<plist version='1.0'>
    <dict>
        <key>Label</key>
        <string>org.macports.munin-cron</string>
        <key>UserName</key>
        <string>munin</string>
        <key>ProgramArguments</key>
        <array>
            <string>/opt/local/sbin/munin-run</string>
        </array>
        <key>LowPriorityIO</key>
        <true/>
        <key>Nice</key>
        <integer>1</integer>
        <key>StartInterval</key>
        <integer>300</integer>
    </dict>
</plist>