Means to check if some process is running on "n" number of machines


Login or Register for Dates, Times and to Reply

 
Thread Tools Search this Thread
# 1  
Means to check if some process is running on "n" number of machines

Team,

I would like to know, if we have any command in Solaris to verify, if some process is listening on a port on a set of machines.

for eg: Wrote the below script, and found that when a process is listening on that port, then it just waits there and doesnt come out. Rather, I would like the script to verify, if some process is listening on that port on that machine and then come out with appropriate message and process to verify a port on the next machine.

telnet abc 33
telnet xyz 405
telnet bbb 54

Do we have any other alternative? Does lsof be useful? Please let me know on this.


Thanks
Sunil Kumar
# 2  
First exchange ssh keys with all those servers and then:
Code:
# ssh root@abc "netstat -a -f inet -P tcp | grep '.33 '" | awk '{print $NF}'
# ssh root@xyz "netstat -a -f inet -P tcp | grep '.405 '" | awk '{print $NF}'
# ssh root@bbb "netstat -a -f inet -P tcp | grep '.54 '" | awk '{print $NF}'

Above should return word "LISTEN"
Of course you can add some 'if' in script which will return true or false depends of what is the returned word.
# 3  
Can I exchange the keys using a script with multiple machines? If yes, then can you please tell me how?

I dont want to login to SSH, rather just check, if its running on the remote machine, since I am not aware of the user credentials.

Thanks
Sunil Kumar
# 4  
If you don't want to use ssh, then you can try nmap.
# 5  
Hi GP,

Can you please tell me as how to exchange ssh keys with all those servers using a script, without user intervention?

Thanks
Sunil Kumar
# 6  
Exchanging ssh keys is a one off exercise; there's no reason nor benefit for a script.
# 7  
Quote:
Originally Posted by msgforsunil
I would like the script to verify, if some process is listening on that port on that machine and then come out with appropriate message and process to verify a port on the next machine.

telnet abc 33
telnet xyz 405
telnet bbb 54

Do we have any other alternative?
Depending on the protocol, this might work:
Code:
read foo < /dev/tcp/abc/33  && echo port  33 is open on host abc
read foo < /dev/tcp/xyz/405 && echo port 405 is open on host xyz
read foo < /dev/tcp/bbb/54  && echo port  54 is open on host bbb

Login or Register for Dates, Times and to Reply

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

What does "force devmap reload" as in "multipath -r" means for my system and stability of my system?

Cannot present unpresented disks back again. On a test server tried this as a solution "multipath -r" and it worked. Too worried to try it in production before I know all the information. Any info would be appreciated! Also some links to the documentation on this specific issue could help a... (1 Reply)
Discussion started by: jsteppe
1 Replies

2. Shell Programming and Scripting

Checking running process status using "grep" on multiple servers in load sharing system.

Suppose i have 3 different servers say x,y and z. Im running some process say ABC and 40 instances for the same is being created. In load sharing suppose on server x, 20 instances are running server y, 10 instances are running server z, 10 instances are running. While checking the... (1 Reply)
Discussion started by: ankitknit
1 Replies

3. UNIX for Advanced & Expert Users

What does "__FD_PRN_" means in perl code ?

I have seen something like this in a perl code: $_ =~ s/__FD_PRN_/\\(/g What does this "__FD_PRN_" means. I have searched google but was not able to find any info regarding this. Appreciate if some one can refer to a link for these characters. From comments/code it used to substitue "(" with... (3 Replies)
Discussion started by: sarbjit
3 Replies

4. What is on Your Mind?

What does "Eris Free" means, from the acronym EFNET

Ok so I have searched google pretty exstensively to find this out, no luck so far . . . Basically I wanted to know what "Eris Free" means, from the acronym EFNET. I was thinking that Eris is generally to do with discordianism, but have so far only found it as a reference to... (2 Replies)
Discussion started by: U_C_Dispatj
2 Replies

5. Solaris

How to check number of "CPU physical and core"?

Hi All, How to check number of "CPU physical and core" ? my machine is T5240, T5440 I try to user prtdiag it show 128 CPUs ?? what real number for it? (5 Replies)
Discussion started by: arm_naja
5 Replies

6. Shell Programming and Scripting

What "-a" operator means in "if" statement

Hi I am trying to figure out what the following line does, I work in ksh88: ] && LIST="$big $LIST" Not sure what "-a" means in that case. Thanks a lot for any advice -A (1 Reply)
Discussion started by: aoussenko
1 Replies

7. Solaris

How to check "faulty" or "stalled" print queues - SAP systems?

Hi all, First off, sorry for a long post but I think I have no other option if I need to explain properly what I need help for. I need some advise on how best to check for "faulty" or "stalled/jammed' print queues. At the moment, I have three (3) application servers which also acts as print... (0 Replies)
Discussion started by: newbie_01
0 Replies

8. Red Hat

"service" , "process" and " daemon" ?

Friends , Anybody plz tell me what is the basic difference between "service" , "process" and " daemon" ? Waiting for kind reply .. .. (1 Reply)
Discussion started by: shipon_97
1 Replies

9. HP-UX

script running with "ksh" dumping core but not with "sh"

Hi, I have small script written in korn shell. When it is called from different script, its dumping core, but no core dump when we run it standalone. And its not dumping core if we run the script using "/bin/sh" instead of "ksh" Can some body please help me how to resolve this issue. ... (9 Replies)
Discussion started by: simhe02
9 Replies

10. Shell Programming and Scripting

Command to find out "count" of running process ?

Hello Experts, Can any one help me out to find the command to get "count" of number of processes running in system. Basically i want to write one crone job to kill some process which making my system hanged. so have to do following things. 1) Find out the number of processes is running.... (4 Replies)
Discussion started by: MITESH KOTHARI
4 Replies

Featured Tech Videos