acsrujan

#To rotate file every 100kb, truncate the file and delete the older logs.
#This keeps only latest 100kb.
/var/logs/randomdump.log 
{
   size 100k
   copytruncate
   rotate 0
}

# Copytruncate avoids file delete and create new file.

acsrujan

---
- hosts: all
  tasks:
    - name: Installs homebrew if not already present
      command: brew -v
      register: brew_check
    - name: install homebrew with curl
      command: /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
      when: brew_check.stdout.find('command not found') > -1

acsrujan

---
#Updates sudo file on ubuntu with NOPASSWD for all users.
- hosts: all
  sudo: yes
  tasks:
    - name: Allow 'sudo' group to have passwordless sudo
      lineinfile:
        dest: /etc/sudoers
        state: present
        regexp: '^%sudo'

acsrujan

#!/bin/bash
START=`date +%s`
while [ $(( $(date +%s) - 30 )) -lt $START ]; do
	{ time nc -zw30 <host ip> <port>;} |& grep real | awk '{print $2}'
done

acsrujan

Download Repo in /var/www/ folder.

acsrujan

To find largest inode directory.
```for i in /*; do echo $i; find $i |wc -l; done```

acsrujan

#!/bin/bash
LOAD_BALANCER_NAME=$1
Instance_ids_str=`aws elb describe-load-balancers --load-balancer-name $LOAD_BALANCER_NAME --query "LoadBalancerDescriptions[*].{ID:LoadBalancerName,InstanceId:Instances[*].InstanceId}[*]. {ELB:ID,InstanceId:InstanceId[*]}" --output=json |jq -r ".[].InstanceId|@csv" |sed 's/\"//g'`
IFS=',' read -a Instance_ids_array <<< "$Instance_ids_str"
for INSTANCE_ID in ${Instance_ids_array[$RANDOM % ${#Instance_ids_array[@]}]}
do
  aws elb deregister-instances-from-load-balancer --load-balancer-name $LOAD_BALANCER_NAME  --instances $INSTANCE_ID
  aws elb register-instances-with-load-balancer --load-balancer-name $LOAD_BALANCER_NAME  --instances $INSTANCE_ID
done

acsrujan

arr=```grep -o "in.*ms" $LOG_FILE_NAME | awk '{if ($2-75000ms > 0) print $2}' | sort -r -n``` | for i in $arr; do grep -B 1 $i $LOG_FILE_NAME |awk '{print $2 FS $3}'; echo $i; done

acsrujan

import platform
import os
import multiprocessing

os_name = platform.system()
print ("os_name:"+os_name)
os_version = platform.version()
print ("os_version:"+os_version)

cpu_architecture = platform.architecture()[0]

acsrujan

$LOAD_BALANCER_NAME=""
Instance_ids=`aws elb describe-load-balancers --load-balancer-name $LOAD_BALANCER_NAME --query "LoadBalancerDescriptions[*].{ID:LoadBalancerName,InstanceId:Instances[*].InstanceId}[*]. {ELB:ID,InstanceId:InstanceId[*]}" --output=json |jq -r ".[].InstanceId|@csv"`
for $INSTANCE_ID in ${Instance_ids[@]}:
  do
    private_ip=`aws ec2 describe-instances --instance-id $id |jq -r '.Reservations[].Instances[] | .PrivateIpAddress'`
    aws elb deregister-instances-from-load-balancer --load-balancer-name $LOAD_BALANCER_NAME  --instances $INSTANCE_ID
    `ssh $username@$private_ip` < deployment_script.sh
    aws elb register-instances-with-load-balancer --load-balancer-name $LOAD_BALANCER_NAME  --instances $INSTANCE_ID
  done