Munin Dynazoom无法在Ubuntu上运行

Question

I recently installed Munin on my machines. I got everything to work and the data is actually being drawn on the graphs! :)

But, for some reason, when I click on each individual graph, it brings me to the dynazoom page but it's all plain text with no images :(

Here is my apache.conf:

# Enable this for template generation
Alias /munin /var/cache/munin/www

# Enable this for cgi-based templates
#Alias /munin-cgi/static /var/cache/munin/www/static
#ScriptAlias /munin-cgi /usr/lib/munin/cgi/munin-cgi-html
#<Location /munin-cgi>
#       Order allow,deny
#       Allow from localhost 127.0.0.0/8 ::1
#       AuthUserFile /etc/munin/munin-htpasswd
#       AuthName "Munin"
#       AuthType Basic
#       require valid-user
#</Location>

<Directory /var/cache/munin/www>
        Order allow,deny
        # Allow from localhost 127.0.0.0/8 ::1
        Allow from all
        Options None
        AllowOverride None

        # This file can be used as a .htaccess file, or a part of your apache
        # config file.
        #
        # For the .htaccess file option to work the munin www directory
        # (/var/cache/munin/www) must have "AllowOverride all" or something 
        # close to that set.
        #

        AuthUserFile /etc/munin/munin-htpasswd
        AuthName "Munin"
        AuthType Basic
        require valid-user

        # This next part requires mod_expires to be enabled.
        #

        # Set the default expiration time for files to 5 minutes 10 seconds from
        # their creation (modification) time.  There are probably new files by
        # that time. 
        #

    <IfModule mod_expires.c>
        ExpiresActive On
        ExpiresDefault M310
    </IfModule>

</Directory>

# Enables fastcgi for munin-cgi-html if present
#<Location /munin-cgi>
#    <IfModule mod_fastcgi.c>
#        SetHandler fastcgi-script
#    </IfModule>
#</Location>

#<Location /munin-cgi/static>
#       SetHandler None
#</Location>

# Enables fastcgi for munin-cgi-graph if present
ScriptAlias /munin-cgi/munin-cgi-graph /usr/lib/munin/cgi/munin-cgi-graph
<Location /munin-cgi/munin-cgi-graph>
        Order allow,deny
        Allow from localhost 127.0.0.0/8 ::1
        # AuthUserFile /etc/munin/munin-htpasswd
        # AuthName "Munin"
        # AuthType Basic
        # require valid-user
        <IfModule mod_fcgid.c>
            SetHandler fcgid-script
        </IfModule>
        <IfModule !mod_fcgid.c>
            SetHandler cgi-script
        </IfModule>
</Location>

ScriptAlias /munin-cgi/munin-cgi-html /usr/lib/munin/cgi/munin-cgi-html
<Location /munin-cgi/munin-cgi-html>
        Order allow,deny
        Allow from localhost 127.0.0.0/8 ::1
        # AuthUserFile /etc/munin/munin-htpasswd
        # AuthName "Munin"
        # AuthType Basic
        # require valid-user
        <IfModule mod_fcgid.c>
            SetHandler fcgid-script
        </IfModule>
        <IfModule !mod_fcgid.c>
            SetHandler cgi-script
        </IfModule>
</Location>

Any reason why this could not be working? If I haven't given enough information, please let me know. Thank you

Answer 1

I had the same issue on Ubuntu 14.04.

By checking /var/log/apache2/error.log I found the script complaining about missing modules:

Can't locate CGI/Fast.pm in @INC (you may need to install the CGI::Fast module) (@INC contains: /etc/perl /usr/local/lib/perl/5.18.2 /usr/local/share/perl/5.18.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.18 /usr/share/perl/5.18 /usr/local/lib/site_perl) at /usr/lib/munin/cgi/munin-cgi-graph line 36.

I did install the CGI::Fast module to solve the issue:

sudo apt-get install libcgi-fast-perl

There is no need for any rewrite rule as indicated in another answer. Packages in Ubuntu 14.04 have the path names configured correctly.

Answer 2

启用apache2 cgi（或cgid）使dynazoom起作用。

sudo a2enmod cgi; sudo service apache2 restart

Answer 3

In addition to ermannob 's answer; my apache2 error.log reported

  AH01797: client denied by server configuration: /usr/lib/munin/cgi/munin-cgi-graph

which stopped me from messing around with file permissions within the OS and caused me to look at the apache config. All that was required was to change

<Location /munin-cgi/munin-cgi-graph>
    Order allow,deny
    Allow from localhost 127.0.0.0/8 ::1
    ...

in /etc/apache2/conf-enabled/munin.conf, to

<Location /munin-cgi/munin-cgi-graph>
    Require all granted
    Options FollowSymLinks SymLinksIfOwnerMatch

I did not need to install any fastcgi packages and followed the tutorial here . They suggest that configuration be added to the apache.conf file directly, however, relaxing the permissions in the conf-enabled/munin.conf file (for /munin, /munin-cgi/munin-cgi-graph and /munin-cgi/munin-cgi-html) was sufficient. I omitted the changes to apache.conf.

Answer 4

When running Ubuntu 14.04 I fixed this on my own servers by updating the apache config in /etc/apache2/conf-available/munin.conf from 2.2 style to 2.4

Example:

<Directory /var/cache/munin/www>
Order allow,deny
Allow from localhost 127.0.0.0/8 ::1
....
</Directory>

needs to be changed to

<Directory /var/cache/munin/www>
# Order allow,deny
# Allow from localhost 127.0.0.0/8 ::1
Require all granted
....
</Directory>

or you could do

Require host localhost

or

Require ip 127.0.0.0/8 ::8

see apache documentation about the changes here . By the time I realized this, I had already gone through and installed FastCGI and the perl module listed in this thread. This change would need to be done to all the location/directory areas you see in munin.conf.

Answer 5

I had the same problem on Debian 8. I've edited the file /etc/munin/apache24.conf like that:

Alias /munin /var/cache/munin/www
<Directory /var/cache/munin/www>
   Require all granted
   Options FollowSymLinks SymLinksIfOwnerMatch
</Directory>

ScriptAlias /munin-cgi/munin-cgi-graph /usr/lib/munin/cgi/munin-cgi-graph
<Location /munin-cgi/munin-cgi-graph>
    Require all granted
    Options FollowSymLinks SymLinksIfOwnerMatch
        <IfModule mod_fcgid.c>
            SetHandler fcgid-script
        </IfModule>
        <IfModule !mod_fcgid.c>
            SetHandler cgi-script
        </IfModule>
</Location>

Then I installed the libapache2-mod-fcgid as mentioned earlier.

After a munin-node restart, it's working correctly.

Answer 6

I had experienced the same behavior in Ubuntu 14.04 LTS. The reason was the image URL in the dynazoom page was incorrectly using /cgi-bin/munin-cgi-graph/ instead of /munin-cgi/munin-cgi/graph/ so instead of hunting down in the code to fix this bug I worked around it with a quick rewrite rule:

RewriteRule ^/cgi-bin/munin-cgi-graph/(.*) /$1

Hope this helps

Answer 7

You should change the configuration part about the munin-cgi-graph, setting the same permissions as the main section. Here's your configuration:

# Enables fastcgi for munin-cgi-graph if present
ScriptAlias /munin-cgi/munin-cgi-graph /usr/lib/munin/cgi/munin-cgi-graph
<Location /munin-cgi/munin-cgi-graph>
    Order allow,deny
    Allow from localhost 127.0.0.0/8 ::1
    # AuthUserFile /etc/munin/munin-htpasswd
    # AuthName "Munin"
    # AuthType Basic
    # require valid-user
    <IfModule mod_fcgid.c>
        SetHandler fcgid-script
    </IfModule>
    <IfModule !mod_fcgid.c>
        SetHandler cgi-script
    </IfModule>
</Location>

change it to this:

# Enables fastcgi for munin-cgi-graph if present
ScriptAlias /munin-cgi/munin-cgi-graph /usr/lib/munin/cgi/munin-cgi-graph
<Location /munin-cgi/munin-cgi-graph>
    Order allow,deny
    # Allow from localhost 127.0.0.0/8 ::1
    Allow from all
    AuthUserFile /etc/munin/munin-htpasswd
    AuthName "Munin"
    AuthType Basic
    require valid-user
    <IfModule mod_fcgid.c>
        SetHandler fcgid-script
    </IfModule>
    <IfModule !mod_fcgid.c>
        SetHandler cgi-script
    </IfModule>
</Location>

Additionally I had to install the libcgi-fast-perl package, doing this:

sudo apt-get install libcgi-fast-perl

Checking /var/log/apache2/error.log helped me a lot.

Answer 8

In my case following https://bugs.launchpad.net/ubuntu/+source/munin/+bug/1258026 and http://munin-monitoring.org/wiki/MuninConfigurationMasterCGI worked.

The only problematic part was where to put Apache virtual host configuration, it turned out that placing it at /etc/apache2/sites-enabled/001-munin.conf worked.