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Checking nagios logs

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Special Forums UNIX and Linux Applications Infrastructure Monitoring Checking nagios logs
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Old 12-18-2012
You could write a wrapper or watcher daemon script to catch that. The configuration files can be watched for any change, or even opened for write using fuser (not a fast command). Now, determining "who" is a question of who logged in where as who before arriving to modify the config file. Someone could even scp in a new version of a file. However, catching SIGHUP being sent to nagios to make it see the new config would require a modified nagios.
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LEARN ABOUT CENTOS

nagios_services_plugin_selinux

nagios_services_plugin_selinux(8)		       SELinux Policy nagios_services_plugin			 nagios_services_plugin_selinux(8)

NAME

       nagios_services_plugin_selinux - Security Enhanced Linux Policy for the nagios_services_plugin processes

DESCRIPTION

       Security-Enhanced Linux secures the nagios_services_plugin processes via flexible mandatory access control.

       The nagios_services_plugin processes execute with the nagios_services_plugin_t SELinux type. You can check if you have these processes run-
       ning by executing the ps command with the -Z qualifier.

       For example:

       ps -eZ | grep nagios_services_plugin_t

ENTRYPOINTS

       The nagios_services_plugin_t SELinux type can be entered via the nagios_services_plugin_exec_t file type.

       The default entrypoint paths for the nagios_services_plugin_t domain are the following:

       /usr/lib/nagios/plugins/check_ntp.*,    /usr/lib/nagios/plugins/check_snmp.*,	/usr/lib/nagios/plugins/check_nt,    /usr/lib/nagios/plug-
       ins/check_dig,	     /usr/lib/nagios/plugins/check_dns,        /usr/lib/nagios/plugins/check_rpc,	/usr/lib/nagios/plugins/check_tcp,
       /usr/lib/nagios/plugins/check_sip,     /usr/lib/nagios/plugins/check_ssh,     /usr/lib/nagios/plugins/check_ups,      /usr/lib/nagios/plug-
       ins/check_dhcp,	     /usr/lib/nagios/plugins/check_game,      /usr/lib/nagios/plugins/check_hpjd,      /usr/lib/nagios/plugins/check_http,
       /usr/lib/nagios/plugins/check_icmp,    /usr/lib/nagios/plugins/check_ircd,    /usr/lib/nagios/plugins/check_ldap,     /usr/lib/nagios/plug-
       ins/check_nrpe,	     /usr/lib/nagios/plugins/check_ping,      /usr/lib/nagios/plugins/check_real,      /usr/lib/nagios/plugins/check_time,
       /usr/lib/nagios/plugins/check_smtp,   /usr/lib/nagios/plugins/check_dummy,    /usr/lib/nagios/plugins/check_fping,    /usr/lib/nagios/plug-
       ins/check_mysql,     /usr/lib/nagios/plugins/check_pgsql,    /usr/lib/nagios/plugins/check_breeze,    /usr/lib/nagios/plugins/check_oracle,
       /usr/lib/nagios/plugins/check_radius, /usr/lib/nagios/plugins/check_cluster, /usr/lib/nagios/plugins/check_mysql_query

PROCESS TYPES

       SELinux defines process types (domains) for each process running on the system

       You can see the context of a process using the -Z option to ps

       Policy governs the access confined processes have to files.  SELinux nagios_services_plugin policy is very flexible allowing users to setup
       their nagios_services_plugin processes in as secure a method as possible.

       The following process types are defined for nagios_services_plugin:

       nagios_services_plugin_t

       Note:  semanage	permissive  -a	nagios_services_plugin_t can be used to make the process type nagios_services_plugin_t permissive. SELinux
       does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

BOOLEANS

       SELinux policy is customizable based on least access required.  nagios_services_plugin policy is extremely flexible and has  several  bool-
       eans that allow you to manipulate the policy and run nagios_services_plugin with the tightest access possible.

       If  you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the authlo-
       gin_nsswitch_use_ldap boolean. Disabled by default.

       setsebool -P authlogin_nsswitch_use_ldap 1

       If you want to deny any process from ptracing or debugging any other processes, you must  turn  on  the	deny_ptrace  boolean.  Enabled	by
       default.

       setsebool -P deny_ptrace 1

       If you want to allow all domains to use other domains file descriptors, you must turn on the domain_fd_use boolean. Enabled by default.

       setsebool -P domain_fd_use 1

       If  you	want  to  allow  all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean. Disabled by
       default.

       setsebool -P domain_kernel_load_modules 1

       If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.

       setsebool -P fips_mode 1

       If you want to enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.

       setsebool -P global_ssp 1

       If you want to allow confined applications to run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.

       setsebool -P kerberos_enabled 1

       If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

       setsebool -P nis_enabled 1

       If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled by default.

       setsebool -P nscd_use_shm 1

NSSWITCH DOMAIN

       If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server for the  nagios_services_plug-
       in_t, you must turn on the authlogin_nsswitch_use_ldap boolean.

       setsebool -P authlogin_nsswitch_use_ldap 1

       If  you	want  to  allow confined applications to run with kerberos for the nagios_services_plugin_t, you must turn on the kerberos_enabled
       boolean.

       setsebool -P kerberos_enabled 1

FILE CONTEXTS

       SELinux requires files to have an extended attribute to define the file type.

       You can see the context of a file using the -Z option to ls

       Policy governs the access confined processes have to these files.  SELinux nagios_services_plugin policy is very flexible allowing users to
       setup their nagios_services_plugin processes in as secure a method as possible.

       STANDARD FILE CONTEXT

       SELinux	defines  the  file context types for the nagios_services_plugin, if you wanted to store files with these types in a diffent paths,
       you need to execute the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.

       semanage fcontext -a -t nagios_services_plugin_exec_t '/srv/nagios_services_plugin/content(/.*)?'
       restorecon -R -v /srv/mynagios_services_plugin_content

       Note: SELinux often uses regular expressions to specify labels that match multiple files.

       The following file types are defined for nagios_services_plugin:

       nagios_services_plugin_exec_t

       - Set files with the nagios_services_plugin_exec_t type, if you want to transition an executable to the nagios_services_plugin_t domain.

       Paths:
	    /usr/lib/nagios/plugins/check_ntp.*,  /usr/lib/nagios/plugins/check_snmp.*,  /usr/lib/nagios/plugins/check_nt,   /usr/lib/nagios/plug-
	    ins/check_dig,	/usr/lib/nagios/plugins/check_dns,	/usr/lib/nagios/plugins/check_rpc,	/usr/lib/nagios/plugins/check_tcp,
	    /usr/lib/nagios/plugins/check_sip,	 /usr/lib/nagios/plugins/check_ssh,    /usr/lib/nagios/plugins/check_ups,    /usr/lib/nagios/plug-
	    ins/check_dhcp,	/usr/lib/nagios/plugins/check_game,	/usr/lib/nagios/plugins/check_hpjd,    /usr/lib/nagios/plugins/check_http,
	    /usr/lib/nagios/plugins/check_icmp,  /usr/lib/nagios/plugins/check_ircd,   /usr/lib/nagios/plugins/check_ldap,   /usr/lib/nagios/plug-
	    ins/check_nrpe,	/usr/lib/nagios/plugins/check_ping,	/usr/lib/nagios/plugins/check_real,    /usr/lib/nagios/plugins/check_time,
	    /usr/lib/nagios/plugins/check_smtp,  /usr/lib/nagios/plugins/check_dummy,  /usr/lib/nagios/plugins/check_fping,  /usr/lib/nagios/plug-
	    ins/check_mysql,   /usr/lib/nagios/plugins/check_pgsql,   /usr/lib/nagios/plugins/check_breeze,  /usr/lib/nagios/plugins/check_oracle,
	    /usr/lib/nagios/plugins/check_radius, /usr/lib/nagios/plugins/check_cluster, /usr/lib/nagios/plugins/check_mysql_query

       Note: File context can be temporarily modified with the chcon command.  If you want to permanently change the file context you need to  use
       the semanage fcontext command.  This will modify the SELinux labeling database.	You will need to use restorecon to apply the labels.

COMMANDS

       semanage fcontext can also be used to manipulate default file context mappings.

       semanage permissive can also be used to manipulate whether or not a process type is permissive.

       semanage module can also be used to enable/disable/install/remove policy modules.

       semanage boolean can also be used to manipulate the booleans

       system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR

       This manual page was auto-generated using sepolicy manpage .

SEE ALSO

       selinux(8), nagios_services_plugin(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8)

nagios_services_plugin						     14-06-10					 nagios_services_plugin_selinux(8)