CentOS 7.0 - man page for nuxwdog (centos section 1)

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NUXWDOG(1)				    PKI Tools				       NUXWDOG(1)

       nuxwdog - Provides a simple watchdog process that can be used to start, stop, monitor, or
       reconfigure a server process.

       nuxwdog -f configuration_file [-i]

       nuxwdog is a watchdog daemon that builds on the uxwdog service that is part of the
       Netscape Enterprise Server (NES).  nuxwdog can start, stop, monitor, and reconfigure
       server programs, depending on the parameters passed to it in its configuration file.
       nuxwdog opens a Unix domain socket to accept requests from any server process it is
       managing. Optionally, nuxwdog can be configured to communicate only with clients that are
       descendants of the nuxwdog process, limiting an avenue of potential access to any servers
       managed by the watchdog.

       Some servers require a high-level of security to protect their data or operations, which
       means (for example) that they cannot store plaintext passwords in a password file to allow
       the server to be started automatically.	nuxwdog can be configured to prompt for server
       passwords when a server first starts and then caches those passwords so that nuxwdog can
       restart the server without intervention if the server crashes.

       To make it easy for clients to communicate with nuxwdog, a C/C++ shared library is
       provided with the nuxwdog source code (libnuxwdog.so). Additionally, nuxwdog provides JNI
       interfaces and Perl bindings to the libnuxwdog.so library, so that calls can be made from
       Java and Perl programs. For more information on this library and the client interfaces,
       see https://fedorahosted.org/nuxwdog/wiki/HOWTO.

       nuxwdog is used by Dogtag PKI to monitor and manage the subsystem server processes for
       Java, Tomcat, and Apache servers.

       -f configuration_file
	   Passes the configuration file for the service which runs the subsystem.  With Dogtag
	   PKI.  For the CA, OCSP, TKS, and DRM, this is for the Java process. For the TPS, this
	   is for the Apache process.

	   Runs the nuxwdog process in interactive mode and keeps nuxwdog open in the foreground
	   instead of running it as a daemon in the background.

	   Gives the full path to the executable to be started.

	   Passes any arguments to the executable. The first argument must be the full path to
	   the executable (the same as the value in ExeFile).

	   Gives the full path to the executable to be started.

	   Sets whether the child server process should only allow requests from a parent (where
	   nuxwdog is the parent).  nuxwdog checks the process ID for any client which sends a
	   request to the Unix domain socket and drops any message where the client is not a
	   descendant of the nuxwdog process. To allow any request, set this to 0; to allow only
	   parent or ancestor requests, sets this to 1.

	   Gives the file to write stdout for the server to be started.

	   Gives the file to write stderr for the server to be started.

	   Sets whether to run the server and the nuxwdog processes in the background in daemon
	   mode after the watchdog is initialized. Setting this to 1 enables daemon mode, while 0
	   keeps this in the foreground.

	   Gives the PID file to use to store the nuxwdog PID.

	   Gives the PID file to use to store the PID of the server process managed by nuxwdog.

	   Sets the SELinux context in which to start the server process.

       nuxwdog can be used to manage many types of server processes. For Dogtag PKI, it manages
       Java, Tomcat, and Apache servers. For the Dogtag PKI Certificate Authority, a Java-based
       subsystem with a Tomcat web service, the configuration file identifies the appropriate JRE
       and class paths, along with setting the output, error, and PID files. (The ExeArgs
       argument should be all on one line.)

	   ExeFile /usr/lib/jvm/jre/bin/java
	   ExeArgs /usr/lib/jvm/jre/bin/java
		   -classpath :/usr/lib/jvm/jre/lib/rt.jar
		   -Djava.io.tmpdir=/usr/share/tomcat5/temp org.apache.catalina.startup.Bootstrap
	   TmpDir /var/lib/pki-ca2/logs/pids
	   ChildSecurity 1
	   ExeOut /var/lib/pki-ca2/logs/catalina.out
	   ExeErr /var/lib/pki-ca2/logs/catalina.out
	   ExeBackground 1
	   PidFile /var/lib/pki-ca2/logs/wd-pki-ca2.pid
	   ChildPidFile /var/run/pki-ca2.pid

       For Dogtag PKI, the Token (smart card) Processing System uses an Apache-based server. This
       example also sets the SELinux context, pki_tps_t, used by the TPS subsystem processes.

	   ExeFile /usr/sbin/httpd.worker
	   ExeArgs /usr/sbin/httpd.worker -f /etc/pki-tps1/httpd.conf
	   TmpDir /var/lib/pki-tps1/logs/pids
	   PidFile /var/lib/pki-tps1/logs/wd-pki-tps1.pid
	   ExeContext pki_tps_t

       There is a more detailed how-to article, including information on available client calls
       for nuxwdog, at https://fedorahosted.org/nuxwdog/wiki/HOWTO.

       The nuxwdog server works in conjunction with the Dogtag PKI subsystems. The Dogtag PKI
       project wiki is at http://pki.fedoraproject.org/wiki/.

       For information specifically about nuxwdog, the nuxwdog project wiki is located at
       https://fedorahosted.org/nuxwdog/wiki/[1]. The nuxwdog relates directly to nuxwdog code
       changes and releases, rather than all PKI-related updates.

       Mailing lists: pki-devel@redhat.com and pki-users@redhat.com

       IRC: Freenode at #dogtag-pki

       The PKI tools were written and maintained by developers with Netscape and now with Red

       Authors: Ade Lee <alee@redhat.com>, Deon Lackey <dlackey@redhat.com>.

       (c) 2010, Red Hat, Inc. Licensed under the GNU Public License version 2.

	1. https://fedorahosted.org/nuxwdog/wiki/

nuxwdog 1				November 29, 2010			       NUXWDOG(1)
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