I am creating a yaml file in GitHub Actions to install softwares on Linux servers created using terraform. Using the pipeline i am able to ssh into the linux servers. In one of the servers i am creating a .ssh directory and an id_rsa file (which contains the private key of the other server) which i intend to …
Tag: ssh
How to troubleshoot Vscode ssh could not establish connection to “hostname”?
I’m trying to connect to a host with Vscode ssh, but I keep getting “could not establish connection to ‘hostname’”. I’m confused because it was working perfectly fine and then it stopped working out of the blue. I did not change the hostname or any config related to ssh in vscode…
How to grep text patterns from remote crontabs using xargs through SSH?
I’m developping a script to search for patterns within scripts executed from CRON on a bunch of remote servers through SSH. For now I can’t get the correct output. Script on client machine This only gives me the paths of scripts from crontab, not the matched lines and line number plus the first li…
Chain SSH script
Let’s say I have 3 linux servers. I need a script that will login from s1 to s2 via ssh, then from s2 to s3 via ssh, then check, if there is already exists string in ~/.ssh/authorized_keys from s1 then do nothing otherwise do s1 and s2 are constant, s3 can be variable. ssh from s1 to s2 already settled
Environment variables not loaded when executing command via `ssh` on remote machine
I want to write a script that executes several commands on a remote server, which includes executing some applications. The .bashrc file on the remote machine defines the PATH variable so that these applications are under it. But when I tried to use ssh <host> <command> , it seems that .bashrc was…
Unable to connect to SSH on Google Cloud VM Instance
I have run into a problem today where I am unable to connect via SSH to my Google Cloud VM instance running debian-10-buster. SSH has been working until today when it suddenly lost connection while docker was running. I’ve tried rebooting the VM instance and resetting, but the problem still persists. Th…
How to SSH a curl command
env = GNU bash, version 4.2.46(2)-release (x86_64-redhat-linux-gnu) Situation: SystemA=No internet. SystemB=Yes internet. SystemA has a log file. SystemA wants SystemB to send a curl command for him. SystemA$ ssh SystemB curl -X POST -H “Content-type: application/json” -d “$data” $hook…
how to run complex awk command on remote machine
I am trying to capture the total used memory in % on remote machine as the following so we add backslash as before the “$” as but still with the same errors any advice how to fix this syntax? Answer You also have to escape the double quotes “:
How to tell SSH to setuid after PAM and not before to remap users
I am working on a radius authentication solution composed of a PAM module and an NSS module. The flow is like this: user ben login (via the login command) the user enters the username: ben my NSS module is queried with that username and returns a default non privileged user radius, same behavior as libnss-ato…
The best way to authorize ssh key of each node to all nodes in the cluster
I want to create a cluster infrastructure that each node communicates with others over shh. I want to use ansible to create a idempotent playbook/role that can be executed when cluster initialized or new nodes added to cluster. I was able to think of 2 scenarios to achieve this. First Scenario task 1 fetches…