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Shell Programming and Scripting
FNG Question: Test if remote server has booted
Post 302342234 by vwgtiturbo on Saturday 8th of August 2009 03:15:33 AM
08-08-2009
FNG Question: Test if remote server has booted
Hello again, I have a script on my media server that wakes up my backup server, performs an 'rsync' backup, then shuts the backup server down. Currently, I have it send the Wake on LAN packet, and sleep for 5 minutes, just to give the backup server time to boot (of course it doesn't take that long, but just in case...). It occurred to me today that that isn't always going to cut it, in the sense that after so many days, the filesystem gets run through fsck (which takes a bit of time on these monster drives).
So, the question... Is it possible to include in a script, maybe a ping mechanism that can be run, then based on the results, determine if the remote server is booted or not? I did some reading on 'ping' (remember, I did use FNG in the title
) and the man page made a mention of using ping's exit status to determine if a server was up or not, but I honestly am not clear on exactly how I would implement that (i.e. if I used:
if [ ping remotehost ]
then blahblah
else blahblahblah
fi
would that necessarily be looking for the exit code 0 (successful), or am I just way out there? The example above seems to be missing something, but... Thanks again, you guys/girls are a great help!
So, the question... Is it possible to include in a script, maybe a ping mechanism that can be run, then based on the results, determine if the remote server is booted or not? I did some reading on 'ping' (remember, I did use FNG in the title
) and the man page made a mention of using ping's exit status to determine if a server was up or not, but I honestly am not clear on exactly how I would implement that (i.e. if I used:if [ ping remotehost ]
then blahblah
else blahblahblah
fi
would that necessarily be looking for the exit code 0 (successful), or am I just way out there? The example above seems to be missing something, but... Thanks again, you guys/girls are a great help!
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LEARN ABOUT SUNOS
ping-connection-pool
asadmin-ping-connection-pool(1AS) User Commands asadmin-ping-connection-pool(1AS) NAME
asadmin-ping-connection-pool, ping-connection-pool - tests that a connection pool is usable SYNOPSIS
ping-connection-pool --user admin_user [--password admin_password] [--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename] [--terse=false] [--echo=false] [--interactive=true] pool_name Tests that a connection pool is usable for both JDBC connection pools and connector connection pools. For example, if you create a new JDBC connection pool for use with an application that is expected to be deployed, before deploying the application, the previously created pool is tested with this command. This command is supported in remote mode only. OPTIONS
--user authorized domain application server administrative username. --password password to administer the domain application server. --host machine name where the domain application server is running. --port port number of the domain application server listening for administration requests. --secure if true, uses SSL/TLS to communicate with the domain application server. --passwordfile file containing the domain application server password. --terse indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well- formatted data for consumption by a script. Default is false. --echo setting to true will echo the command line statement on the standard output. Default is false. --interactive if set to true (default), only the required password options are prompted. OPERANDS
poolname name of the connection pool to be tested. Example 1: Using ping-connection-pool Before you can ping a connection pool, you must: o Create a connection pool with authentication. o Make sure the Enterprise Information Server (can be the database) is started. asadmin> ping-connection-pool --user admin1 --password adminadmin1 --host pigeon --port 5001 sampleConnectionPool Command ping-connection-pool executed successfully EXIT STATUS
0 command executed successfully 1 error in executing the command asadmin-create-connector-connection-pool(1AS), asadmin-delete-connector-connection-pool(1AS), asadmin-list-connector-connection-pool(1AS), asadmin-create-jdbc-connection-pool(1AS), asadmin-delete--jdbc-connection-pool(1AS)asadmin- list--jdbc-connection-pools(1AS) J2EE 1.4 SDK March 2004 asadmin-ping-connection-pool(1AS)