[Pkg-monitoring-maintainers] Bug#866115: Bug#866115: dist-upgrade to Stretch broke ganglia-web

[Daniel Pocock]

On 29/06/17 08:49, Alois Schloegl wrote:
> 
> 
> On 2017-06-27 15:15, Daniel Pocock wrote:
>>
>>
>> On 27/06/17 14:58, Alois Schloegl wrote:
>>> Package: ganglia-web
>>>
>>>
>>> The following ganglia packages are installed:
>>>
>>> ganglia:~# dpkg -l|grep ganglia
>>> ii  ganglia-modules-linux                 1.3.6-2
>>>         amd64        Ganglia extra modules for Linux (IO, filesystems,
>>> multicpu)
>>> ii  ganglia-monitor                       3.6.0-7+b1
>>>         amd64        cluster monitoring toolkit - node daemon
>>> ii  ganglia-monitor-python                3.6.0-7
>>>         all          cluster monitoring toolkit - python modules
>>> ii  ganglia-webfrontend                   3.6.1-3
>>>         all          cluster monitoring toolkit - web front-end
>>> ii  libganglia1                           3.6.0-7+b1
>>>         amd64        cluster monitoring toolkit - shared libraries
>>>
>>>
>>> After dist-upgrading from Debian 8 to Debian 9, the ganglia web
>>> interface is not working anymore, it just shows this error message.
>>>
>>>
>>> === START-OF-MESSAGE ===
>>>
>>> Sorry, you do not have access to this resource.
>>> "); } try { $dwoo = new Dwoo($conf['dwoo_compiled_dir'],
>>> $conf['dwoo_cache_dir']); } catch (Exception $e) { print "
>>> There was an error initializing the Dwoo PHP Templating Engine: ".
>>> $e->getMessage() . "
>>>
>>> The compile directory should be owned and writable by the apache user.
>>
>>
>> On my system it is working, I see the following owner and permissions:
>>
>> $ ls -la /var/lib/ganglia-web/dwoo/
>> total 16
>> drwxr-xr-x 4 www-data root 4096 Jan 22  2015 .
>> drwxr-xr-x 4 root     root 4096 Jan 22  2015 ..
>> drwxr-xr-x 2 www-data root 4096 Apr  4  2014 cache
>> drwxrwxrwx 3 www-data root 4096 Mar 16  2015 compiled
>>
>>>
>>>
>>> Do you have any suggests for debugging this issue ?
>>>
>>
>> Please send the output of this command:
>>
>> $ ls -la /var/lib/ganglia-web/dwoo/
>>
> 
> 
> These permissions are the same at my machine.
> 
> ganglia:~#  ls -la /var/lib/ganglia-web/dwoo/
> insgesamt 16
> drwxr-xr-x 4 www-data root 4096 Jun 27 12:37 .
> drwxr-xr-x 4 root     root 4096 Jun 27 12:37 ..
> drwxr-xr-x 2 www-data root 4096 Jul  7  2016 cache
> drwxrwxrwx 3 www-data root 4096 Jul 27  2015 compiled
> 
> 
> I tried further, purging and reinstalling ganglia-web and apache did not
> help.
> What solved the problem was enabling all modules with
> 
>    a2enmod
> Your choices are: access_compat actions alias allowmethods asis
> auth_basic auth_digest auth_form auth_kerb authn_anon authn_core
> authn_dbd authn_dbm authn_file authn_socache authnz_fcgi authnz_ldap
> authz_core authz_dbd authz_dbm authz_groupfile authz_host authz_owner
> authz_user autoindex buffer cache cache_disk cache_socache cern_meta cgi
> cgid charset_lite data dav dav_fs dav_lock dbd deflate dialup dir
> dump_io echo env expires ext_filter file_cache filter gnutls headers
> heartbeat heartmonitor http2 ident imagemap include info
> lbmethod_bybusyness lbmethod_byrequests lbmethod_bytraffic
> lbmethod_heartbeat ldap log_debug log_forensic lua macro mime mime_magic
> mpm_event mpm_itk mpm_prefork mpm_worker negotiation perl php7.0 proxy
> proxy_ajp proxy_balancer proxy_connect proxy_express proxy_fcgi
> proxy_fdpass proxy_ftp proxy_hcheck proxy_html proxy_http proxy_http2
> proxy_scgi proxy_wstunnel ratelimit reflector remoteip reqtimeout
> request rewrite sed session session_cookie session_crypto session_dbd
> setenvif slotmem_plain slotmem_shm socache_dbm socache_memcache
> socache_shmcb speling ssl status substitute suexec unique_id userdir
> usertrack vhost_alias xml2enc
> 
> and enabling all of them solved the problem.
> 
> I'm not sure which of them I really need, but suspect that there is a
> missing dependency on either to php7 or gnutls module.
> 


On one of my systems running ganglia-web I see the following enabled:

$ sudo a2query -m
alias (enabled by unknown)
authz_groupfile (enabled by unknown)
authn_file (enabled by unknown)
deflate (enabled by unknown)
setenvif (enabled by unknown)
authz_user (enabled by unknown)
authz_core (enabled by maintainer script)
mpm_prefork (enabled by site administrator)
status (enabled by unknown)
php7.0 (enabled by site administrator)
env (enabled by unknown)
socache_shmcb (enabled by maintainer script)
access_compat (enabled by maintainer script)
cgi (enabled by unknown)
reqtimeout (enabled by unknown)
autoindex (enabled by unknown)
negotiation (enabled by unknown)
dir (enabled by unknown)
auth_basic (enabled by unknown)
authn_core (enabled by maintainer script)
rewrite (enabled by unknown)
authz_host (enabled by unknown)
filter (enabled by maintainer script)
ssl (enabled by unknown)
mime (enabled by unknown)


If anybody else encounters this problem, please run "a2query -m" and see
if you can identify if any module is missing and I'll update the
postinst script.

php7.0 and cgi are already included in the postinst[1]

Next time I build a fresh system running stretch I may trying installing
the package to see if the same problem appears.

Regards,

Daniel


1.
https://sources.debian.net/src/ganglia-web/3.6.1-3/debian/ganglia-webfrontend.postinst/