cnid_metad
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## Name

cnid_metad — start cnid_dbd daemons on request

## Synopsis

`cnid_metad` [-d] [ -h `hostname` ] [ -p `port` ] [ -u `user` ] [ -g `group` ] [ -s `cnid_dbdpathname` ]

## 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

`-d`

  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 .

`-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.

`-u` `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.

## CAVEATS

The number of cnid_dbd subprocecesses is currently limited to 128. This restriction will be lifted in the future.

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)

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