I still haven't had chance to read the entire Debian manual, which I promise I will do as soon as I can, and I will start putting info back into this forum.
However, for the mean time, could someone please help with a small script? I understand what I've got to do and how to do it, but I'm struggling with getting the syntax right.
I have a loads of nodes I need to connect to from time to time, but I'm never sure if they're alive. So instead of ssh'ing and waiting ages to either get a connection, or not, I'd sooner start with a ping, if there is a good response, set off the ssh. At this point I might have 10 terminal sessions open for different nodes, so I want to automate as much as possible.
#!/bin/bash
Strip ip from $1 to str-IP
Start loop from 1 to 10 (arbitrary):
Create a bln-Connection variable and set value = False
Start loop from 1 to 10 (Arbitrary)
--Ping the str-IP
--If response | grep includes ttl or time, or ms I guess:
----set bln-Connection = True
----exit the loop
If bln-Connection = True:
--ssh $1
else
--echo "The blooming thing is down again."
Something like that. I hope that's clear enough, and I know I'm using about 3 different languages, just none of it bash!
Many, many thanks.
Moderator's Comments:
edit by bakunin: Please use CODE-tags, even for Pseudo-code. Thank you.
I have a linux box build11 which can be pinged from build18 (Windows) box. And we can only login to the box (using SSH) from build18 box. Plz help to characterize the problem, network, DNS, DHCP, etc (or whatever which I am unsure)
Any idea what may be the reason ? :confused:
Thanks in... (4 Replies)
i have this SSH command which runs perfectly on command prompt in sunOS
ssh -o Port=${portno} ${uname}@${server} find ${dir_path} -name '***'
output : /usr/local/home/***
My problem is when i run same command in my script
#!/usr/bin/ksh
res=`ssh -o Port=${portno} ${uname}@${server}... (1 Reply)
Hi,
I have a solaris 8 machine.
I see ssh is running in the machine
sbnismwp2# ps -aef | grep ssh
root 947 945 0 04:34:45 ? 0:00 /export/opt/SSHtecagt/sbin/ssh-mgmt-sysmonitor
root 945 1 0 04:34:45 ? 0:00 /export/opt/SSHtecagt/sbin/ssh-mgmt-agent... (11 Replies)
Hi,
I am writing a script on Solaris 10 and want to execute a remote ssh command. Normally this command should just return the value 0000000000002356 but when using ssh it seems it is passing the result to the shell to execute.
ssh root@10.5.112.145 `/usr/bin/nawk -F\, '$1=="USG" && $2=="01"... (3 Replies)
I have a Solaris 9 server that does not return a ping. When I try to log in via SSH I eventually get in. I am logged in now.
I know this is a wide open question, but can you recommend some things I should check?
.
Thanks in advance,
~R (2 Replies)
Hi all,
I am using the below code to ping a code and print whehter the connection is successful or not.
use Net::Ping;
$p = Net::Ping->new();
my $host = "x.x.x.x";
# print "$host is alive.\n" if $p->ping($host);
if ($p->ping($host,3))
{
print... (0 Replies)
Hello all,
I am writing a script that pings various machines to check connectivity.
If a machine is available, the prompt returns a result immediately:
root@ops # ping 172.21.5.5
172.21.5.5 is alive
BUT
if a machine is Down , the reply takes a long time to come. The issue is I want to... (1 Reply)
I cant ping to some of my machines, but ping works.
I attach screenshots. Port is open and it is 22.
I can't figure out why i cant access.
https://www.unix.com/attachments/unix-for-advanced-and-expert-users/7492d1541541072-cant-ssh-but-ping-works-sshlisten-jpg... (17 Replies)
Discussion started by: tomislav91
17 Replies
LEARN ABOUT DEBIAN
cf-promises
cf-promises(8) System Manager's Manual cf-promises(8)NAME
cf-promises - cfengine's promise analyzer
SYNOPSIS :
cf-promises [options]
DESCRIPTION :
The promise agent is a validator and analysis tool for configuration files belonging to any of the components of Cfengine. Configurations
that make changes must be approved by this validator before being executed. cfengine is a self-healing configuration and change management
based system. You can think of cfengine as a very high level language, much higher level than Perl or shell. Asingle statement is called a
promise, and compliance can result in many hundreds of filesbeing created, or the permissions of many hundreds offiles being set. The idea
of cfengine is to create a one or more sets of configuration files which willclassify and describe the setup of every host in a network.
COMMAND LINE OPTIONS :
--help, -h
Print the help message
--bundlesequence, -b
Use the specified bundlesequence for verification
--debug, -d
Set debugging level 0,1,2,3
--verbose, -v
Output verbose information about the behaviour of the agent
--dry-run, -n
All talk and no action mode - make no changes, only inform of promises not kept
--version, -V
Output the version of the software
--file, -f
Specify an alternative input file than the default
--define, -D
Define a list of comma separated classes to be defined at the start of execution
--negate, -N
Define a list of comma separated classes to be undefined at the start of execution
--inform, -I
Print basic information about changes made to the system, i.e. promises repaired
--diagnostic, -x
Activate internal diagnostics (developers only)
--analysis, -a
Perform additional analysis of configuration
--reports, -r
Generate reports about configuration and insert into CFDB
AUTHOR
Mark Burgess and CFEngine AS
INFORMATION
Bug reports: http://bug.cfengine.com, .PP Community help: http://forum.cfengine.com
Community info: http://www.cfengine.com/pages/community
Support services: http://www.cfengine.com
This software is Copyright (C) 2008-2013 CFEngine AS.
Maintenance Commands cf-promises(8)
11-27-2018
