Here's one of my favorite techniques for lateral movement: SSH agent forwarding. Use a UNIX-domain socket to advance your presence on the network. No need for passwords or keys.
root@bastion:~# find /tmp/ssh-* -type s
/tmp/ssh-srQ6Q5UpOL/agent.1460
root@bastion:~# SSH_AUTH_SOCK=/tmp/ssh-srQ6Q5UpOL/agent.1460 ssh user@internal.company.tld
user@internal:~$ hostname -f
internal.company.tld
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• 45-minute systems interview, focus on responding to real world problems with an unhealthy service, such as a web server or database. The interview will start off at a high level troubleshooting a likely scenario, dig deeper to find the cause and some possible solutions for it. The goal is to probe your knowledge of systems at scale and under load, so keep in mind the challenges of the Facebook environment.
• Focus on things such as tooling, memory management and unix process lifecycle.
More specifically, linux troubleshooting and debugging. Understanding things like memory, io, cpu, shell, memory etc. would be pretty helpful. Knowing how to actually write a unix shell would also be a good idea. What tools might you use to debug something? On another note, this interview will likely push your boundaries of what you know (and how to implement it).
Interview is all about taking an ambiguous question of how you might build a system and letting
| #!/bin/bash | |
| # k8s_manual_cron - Run a configured cronjob now | |
| set -euo pipefail | |
| IFS=$'\n\t' | |
| # shellcheck disable=SC2155 | |
| main() { | |
| readonly cronjob_name="$1" | |
| local cronjob="$(kubectl get cronjob "$cronjob_name" -o json)" | |
| local jobTemplate="$(printf "%s" "$cronjob" | jq -c .spec.jobTemplate.spec)" |
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| #!/bin/bash | |
| set -o errexit | |
| echo "Removing exited docker containers..." | |
| docker ps -a -f status=exited -q | xargs -r docker rm -v | |
| echo "Removing dangling images..." | |
| docker images --no-trunc -q -f dangling=true | xargs -r docker rmi |
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| #!/bin/bash | |
| ## uploading to google | |
| ## rev: 22 Aug 2012 16:07 | |
| det=`date +%F` | |
| browser="Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:13.0) Gecko/20100101 Firefox/13.0.1" | |
| username="user@domain-apps.com" | |
| password="password" | |
| accountype="HOSTED" #gooApps = HOSTED , gmail=GOOGLE |
