CNID_METAD(8) | Netatalk 2.2 | CNID_METAD(8) |
NAME¶
cnid_metad - start cnid_dbd daemons on requestSYNOPSIS¶
cnid_metad
[-l loglevel [-f filename]] [-d]
[-h hostname] [-p port] [-u user]
[-g group] [-s cnid_dbdpathname]
cnid_metad -v | -V
DESCRIPTION¶
cnid_metad waits for requests from afpd to start up instances of the cnid_dbd daemon. It keeps track of the status of a cnid_dbd instance once started and will restart it if necessary. cnid_metad is normally started at boot time from /etc/rc or equivalent and runs until shutdown. afpd needs to be configured with the -cnidserver option in afpd.conf in order to access cnid_metad. It is possible to run more than one instance of cnid_metad on the same machine if different values for the interface and/or port are specified with the -h and -p options.OPTIONS¶
-l <loglevel> [-f <filename>]Specify that any message of a loglevel up to
the given loglevel should be logged to the given file. If the filename
is ommited the loglevel applies to messages passed to syslog. Default is logs
to syslog with a default logging setup of "log_note".
Note: cnid_metad passes this to cnid_dbd which will in turn
use this for its logging setup.
loglevels: LOG_SEVERE, LOG_ERROR, LOG_WARN, LOG_NOTE, LOG_INFO, LOG_DEBUG,
LOG_DEBUG6, LOG_DEBUG7, LOG_DEBUG8, LOG_DEBUG9, LOG_MAXDEBUG
Example. Useful default config
Example. Debugging config
-d
-l log_info -f /var/log/afpd.log
-l log_maxdebug -f /var/log/afpd.log
cnid_metad will remain in the foreground
and will also leave the standard input, standard output and standard error
file descriptors open. Useful for debugging.
-h hostname
Use hostname as the network interface
for requests as opposed to the default localhost. The network address
may be specified either in dotted-decimal format for IPv4 or in hexadecimal
format for IPv6.
-p port
Use port as the port number for
reqests. Default is 4700.
-u user
Switch to the userid of user before
serving requests. This userid will be inherited by all cnid_dbd daemon
processes started.
-g group
Switch to the groupid of group before
serving requests. This groupid will be inherited by all cnid_dbd daemon
processes started. Both user and group must be specified as
strings.
-s cnid_dbd pathname
Use cnid_dbd pathname as the pathname
of the executeable of the cnid_dbd daemon. The default is
/usr/sbin/cnid_dbd.
-v, -V
Show version and exit.
CAVEATS¶
The number of cnid_dbd subprocecesses is currently limited to 512. cnid_metad does not block or catch any signals apart from SIGPIPE. It will therefore exit on most signals received. This will also cause all instances of cnid_dbd´s started by that cnid_metad to exit gracefully. Since state about and IPC access to the subprocesses is only maintained in memory by cnid_metad this is desired behaviour. As soon as cnid_metad is restarted afpd processes will transparently reconnect.SEE ALSO¶
cnid_dbd(8), afpd(8), dbd(1)01 Jan 2012 | Netatalk 2.2 |