Cisco Prime Provisioning Administration Guide, 6.8

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Cisco Prime Provisioning Administration Guide, 6.8

Chapter Title

WatchDog Commands

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Updated:: December 1, 2014

Subcommand

WatchDog Commands

The WatchDog is responsible for bootstrapping Prime Provisioning and starting the necessary set of server processes. In addition, the WatchDog monitors the health and performance of each server to ensure it is functioning properly. In the event of a software error that causes a server to fail, the WatchDog automatically restarts the errant server.

The WatchDog is a background daemon process that is automatically installed as part of the installation procedure for Prime Provisioning. After the installation procedure has completed, WatchDog is started automatically. You can execute the startwd command to run the WatchDog after the installation. The WatchDog can be configured to automatically start any time the machine is rebooted.

In addition to the commands that are specified in this chapter, in the product you can choose Administration > Control Center > Hosts and from there you can start, stop, restart, and view log files for the individual Prime Provisioning servers.

This chapter provides the description, syntax, and arguments (listed alphabetically) for the following WatchDog commands:

startdb Command

This section provides the description and syntax for the startdb command.

Description

The startdb command starts the database.

Syntax

Go to PRIMEP_HOME and execute the following command:

./prime.sh startdb

The startdb command has no arguments and starts the database.

The location of startdb is: < Prime Provisioning Directory>/bin.

Note Do not run startdb in the background. Do not enter startdb &.

startns Command

This section provides the description and syntax for the startns command.

Description

The startns command starts the name server. The orbd process provides the name server functionality. orbd (from JDK) is required, but startwd starts it if it is not already running. The startns and stopns commands deal with orbd.

Syntax

Go to PRIMEP_HOME and execute the following command:

./prime.sh startns

The startns command has no arguments and starts the name server.

The location of startns is: < Prime Provisioning Directory>/bin.

startwd Command

This section provides the description and syntax for the startwd command.

Description

The startwd command starts the WatchDog and all Prime Provisioning processes. The startwd command includes the functionality of startdb (see the “startdb Command” section) and startns (see the “startns Command” section). Executing this command is a necessary procedure and occurs automatically as part of the installation. Use this startwd command after issuing a stopwd command to restart the WatchDog.

If for some reason the Prime Provisioning host is stopped, either inadvertently or by issuing the stopwd command, it can be restarted by using the startwd command.

Syntax

Go to PRIMEP_HOME and execute the following command:

./prime.sh startwd

The startwd command has no arguments and starts the WatchDog only for the machine where it is executed.

The location of startwd is: < Prime Provisioning Directory>/bin

Note Do not run startwd in the background. Do not enter startwd &.

stopall Command

This section provides the description and syntax for the stopall command.

Description

The stopall command stops the database, name server, and WatchDog on the machine on which it is run. The stopall command includes the functionality of stopdb -y (see the “stopdb Command” section), stopns -y (see the “stopns Command” section), and stopwd -y (see the “stopwd Command” section). Normally this is only necessary before installing a new version of Prime Provisioning.

Syntax

Go to PRIMEP_HOME and execute the following command:

Go to PRIMEP_HOME and execute the following command:

./prime.sh stopwd [ -y ]

where:

-y indicates not to prompt before shutdown. If -y is not specified, you are prompted with the following message: “Are you absolutely sure you want to stop the watchdog and all of its servers? Other users may be using this system as well. No activity (for example: collections, performance monitoring, provisioning) occurs until the system is restarted.” You are then prompted to reply yes or no .

The location of stopwd is: < Prime Provisioning Directory>/bin .

wdclient Command

Note Before running the wdclient command in Prime Provisioning, you need to source the environment variable with the following command: “source $PRIMEF_HOME/bin/vpnenv.sh”.

This section provides the description, syntax, and options (listed alphabetically) for the wdclient subcommands. These subcommands are diagnostic tools. This section also describes the column format of the output of each of the subcommands.

Note The location of wdclient is: <Prime Provisioning Directory>/bin.

The following are the wdclient subcommands:

– Information Produced: Name Column

– Information Produced: State Column

– Information Produced: Gen Column

– Information Produced: Exec Time Column

– Information Produced: Success Column

– Information Produced: Missed Column

wdclient stop Subcommand

The wdclient restart subcommand restarts one or more servers. Any dependent servers are also restarted.

Note It is not necessary to restart servers in a properly functioning system. The wdclient restart command should only be run under the direction of Cisco Support.

Syntax

wdclient restart [ all | <server_name> | group <group_name> ]

where you can choose one of the following arguments:

all is all servers. This is the default if no argument is specified.

<server_name> is the name of a server chosen from the list displayed by the wdclient status command. See Table 6-1 , “ Servers and Their Functions ,” for server descriptions.

group <group_name> where, <group_name> is the name of a server group chosen from the list displayed by the wdclient groups command.

wdclient start Subcommand

This section provides the description and syntax for the wdclient start subcommand.

Description

The wdclient start subcommand starts one or more servers. Other servers that depend on the specified server(s) might also start.

Note It is not necessary to stop and start servers in a properly functioning system. The wdclient start command should only be run under the direction of Cisco Support.

Syntax

wdclient start [ all | <server_name> | group <group_name> ]

where you can choose one of the following arguments:

all is all servers. This is the default if no argument is specified.

<server_name> is the name of a server chosen from the list displayed by the wdclient status command. See Table 6-1 , “ Servers and Their Functions ,” for server descriptions.

group <group_name> where, <group_name> is the name of a server group chosen from the list displayed by the wdclient groups command.

wdclient status Subcommand

This section provides the description, syntax, and information produced for the wdclient status subcommand.

Description

The wdclient status subcommand lists all the servers and their states. See Table 6-1, “ Servers and Their Functions ,” for server descriptions. See Table 6-2, “ Valid States ,” for the list of all the states.

Syntax

wdclient [ -poll <seconds> ] status

where:

-poll <seconds> is an optional parameter. <seconds> is the number of seconds. A number other than zero indicates that when new status data is available it is displayed every <seconds> seconds, where <seconds> is the specified number of seconds. The default -poll value is zero (0), which shows the status just once.

Information Produced: Name Column

The Name column provides the name of each of the servers. Table 6-1 provides a list of the servers and a description of the function that each server provides.

Table 6-1 Servers and Their Functions
Server	Function
dbpoller	Monitors database server.
discovery	Devices and Service Discovery Engine.
httpd	Web server.
nspoller	Monitors name service.
rgserver	Executes various Prime Provisioning traffic engineering computations, such as tunnel repairing.

Note The processes that no longer exist includes dispatcher, lockmanager, scheduler, and worker.

Information Produced: State Column

The State column provides the current state of the server. Table 6-2 provides a description of each of the states in normal progression order.

Table 6-2 Valid States
State	Description
start_depends	This server has been asked to start, but is waiting for servers it depends on to start. After all dependent servers have started, this server transitions to the state of starting.
starting	This server is currently starting. After a successful heartbeat occurs, this server transitions to the state of started.
started	This server is currently started and running.
stop_depends	This server is supposed to be stopped, but it is waiting for servers it depends on to be stopped first.
stopping_gently	This server is in the process of stopping in a gentle fashion. That is, it was notified that it is to stop.
stopping_hard	This server is in the process of being killed because either it did not have a way to stop gently or because the gentle stop took too long.
stopped	This server is stopped. The WatchDog either starts it again or disables it if it has been frequently dying.
disabled_dependent	This server is disabled because one or more servers it depends on are disabled. If all servers it depends on are started, this server automatically starts.
disabled	This server is disabled and must be manually restarted.
restart_delay	This server is delaying before restarting. There is a short delay after a server stops and before it is restarted again.

Information Produced: Gen Column

The Gen column provides the generation of the server. Each time the server is started, the generation is incremented by 1.

Information Produced: Exec Time Column

The Exec Time column provides the date and time the server was last started.

Information Produced: Success Column

The Success column provides the number of successful heartbeats since the server was last started. Heartbeats are used to verify that servers are functioning correctly.

Information Produced: Missed Column

The Missed column provides the number of missed heartbeats since the server was last started.

A few missed heartbeats could simply indicate the system was busy. However, more than a couple of missed heartbeats per day could indicate a problem. See the logs to diagnose the reason.

Three missed heartbeats in a row is the default for restarting the server.

wdclient stop Subcommand

This section provides the description and syntax for the wdclient stop subcommand.

Description

The wdclient stop subcommand stops one or more servers. Other servers that depend on the specified servers also stop.

Note It is not necessary to stop servers in a properly functioning system. The wdclient stop command should only be run under the direction of Cisco Support.

Syntax

wdclient stop [ all | <server_name> | group <group_name> ]

where you can choose one of the following arguments.

all is all servers. This is the default if no argument is specified.

<server_name> is the name of a server chosen from the list displayed by the wdclient status command. See Table 6-1 , “ Servers and Their Functions ,” for server descriptions.

group <group_name> is the name of a server group chosen from the list displayed by the wdclient groups command.

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