I am running the bash files to make a Mongo dump on daily bases.But In local directory I am running a one bash file which connects to server terminal.And in server terminal I am running the other file which makes a Mongo dump.
But is it possible to make one file which connects to MongoDB server terminal and run the commands on the sever.
I tried with many commands but it was not possible to run the commands on the server terminal with one bash file, when the server terminal opens up then the left over commands does not execute.
Is it possible to do one bash file and execute the server commands on the server..?
Connect to your DB remotely using this command :
mongo --username username --password secretstuff --host YOURSERVERIP --port 28015
You can then automate this by including your pertaining commands ( including the above ) in a bash script that you can run from anywhere.
To solve the above problem, answer from Matias Barrios seems to be correct for me. You don't use a script on the server, but use tools on your local machine that connect to the server services and manage them.
Nevertheless, to execute a script on a distant server, you could use ssh. This is not the right solution in your case, but answer the question in your title.
ssh myuser#MongoServer ./script.sh param1
This can be used in a local script and execute script.sh on the server MongoServer (with param1 and) with system privileges of the user myuser.
Beforehand, don't forget to avoid password request with
ssh-copy-id myuser#MongoServer
This will copy your ssh public key in the myuser directory of the MongoServer
Related
What I am trying to do is to login to remote Linux server using SSH from my Windows machine by running a shell script via git bash.
I would like to write a script which will be used by an user with basic IT knowledge. This script will execute a bunch of commands on the remote machine, so it does need to establish a SSH connection.
What I have tried to write in this script so far is:
ssh username#ip <password>
EDIT: You should consider installing Jenkins on the remote system.
Running a command on a remote system can be done via:
ssh user#host command arg1 arg2
If you omit the password, a password prompt will appear, to get around the password prompt, you should consider setting passwordless SSH login. https://askubuntu.com/questions/46930/how-can-i-set-up-password-less-ssh-login
Rephrasing what you said, you want to write a script (namely script1.sh) which does the following (in this order):
Start a ssh connection with a remote
Execute some commands, possibly written in another script (namely script2.sh)
Close the connection / Keep it open for additional command line commands
If you want to put the remote commands on script2.sh instead of listing them in script1.sh, you need to consider that script2.sh must be on the remote server. If not, then you may consider to delegate to script1.sh the creation/copy of script2.sh on the remote machine. You may copy it in a temporary folder.
In this case, my suggestion is to write script1.sh as follows:
Copy of script2.sh with
scp /path/to/local/script2.sh user#host:/path/to/remote/script2.sh
Switch bash sheel to remote shell with
ssh user#host
Execution of script2.sh
sh /path/to/remote/script2.sh
Instead, if you prefer to list everything in just one script file, you may want to write:
Switch bash sheel to remote shell with
ssh user#host
Execution of commands
echo "This command has been executed on the remote server"
echo "This command has also been executed on the remote server"
..
Possibly closing the SSH connection to prevent that the user execute additional commands
You may consider to copy the ssh-keys on the remote server so to avoid password prompts. More information here.
My environment contains clusters with multiple hosts in each cluster and as such I tend to run similar or equivalent commands on the hosts in such a cluster.
Sometimes, I am ssh-ed into a cluster host and remember that I had run a certain command on another host in this cluster but I can't remember which host I ran it on, however I need to run that command again.
Since every host in the cluster has its own .bash_history, I have to log in to each and every one of them and look through the .bash_history file to locate that command.
However, if I could use one .bash_history file for all hosts in the cluster (e.g. named .bash_history.clusterX) then I would be able to search the command in the bash history (with CTRL+R) and execute it.
Is that possible?
In my setup shared home directory (via nfs, etc.) is not an option.
Another approach is to leave the relevant commands to execute in an executable file ('ssh_commands') in the home folder of each remote user on each machine.
Those ssh_commands will include the commands you need to execute on each server whenever you open an SSH session.
To call that file on each SSH session:
ssh remoteUser#remoteServer -t "/bin/bash --init-file <(echo 'source ssh_commands')"
That way, you don't have to look for the right commands to execute, locally or remotely: your SSH session opens and execute right away what you want.
I need to run a bash script that takes some parameters from server-1 and then from my local server where I ran the script with
ssh user#server-1 bash -s <script.sh
I then need to use those parameters to be executed with all kind of commands on my local server and also server-2 is involved. But the script will still be running on server-1 because of
ssh user#server-1 bash -s <script.sh
Maybe I can use 2 scripts but I want them to be only on local server. and putting in the script more commands after SSH doesn't seem to be working.
I would place the script on the remote server and remote execute it via SSH.
If the script should change over time, then break it up into 2-3 steps
1. gather any additional parameter from remote machine
2. copy script to remote machine using scp
3. ssh to "remote execute" script on remote machine
Am not sure what parameter you need from the remote system.
I would try to hand it over via command line options to the script in #3.
Otherwise "hack"/patch it in before #2.
I am very new in shell scripting , i want to download some files from linux remote server ,so how can i proceed for that.That remote server is ssh based .
first of all, ftp service is better choice to get files from remote server.
If only sshd service is available, then you may use ssh based command sftp or scp.
However, using sftp or scp commands will invoke an interactive password prompt, which is a problem in shell script --> You have to ask for help to expect command. see Automate scp file transfer using a shell script .
Besides expect, you may also set up trust relationship between two servers, then you may use scp without password. See http://www.linuxproblem.org/art_9.html
I'm trying to write a shell script using bash. I have multiple servers and each servers have multiple apps runnings on it. Each server also has specific app scripts to check/stop/start etc. All I want to do is that, do a ssh and connect to the remote server.
Which I'm also able to do sucessfully and exceute the commands also..
In some instance I need to check some process status on a remote machine, the app sepecific scripts already does that. But using my ssh when i try to execute that script I dont get any info ( it gets executed but no info is passed ). How do i get the information from the remote host and display on the local host here.
Any help on this is really appreciated.
Regards,
Senny
You can run remote commands and get results locally by passing the command as a string to ssh.
In your script, you can do:
CMD_OUT=$(ssh user#remote_host "/path/to/script argument")
The command will be run remotely and the output store in the CMD_OUT variable. You can then parse the output in your script to get the results you want.
To simplify usage of your script, you might want to set up passwordless ssh so you don't have to type your password each time the script tries to run a remote command.