racl101 + aws   299

Enable Access Logs for Your Classic Load Balancer - Elastic Load Balancing
TLDR: this is the page that demonstrates how to create a bucket in S3, give it the policies it needs for the Elastic Load Balancer service to write access logs to it.
amazon  aws  s3  howto  enable  load  balancer  access  logs  elb  logging  example  guide  reference  documentation  tutorial 
october 2018 by racl101
Running Commands on Your Linux Instance at Launch - Amazon Elastic Compute Cloud
In practice, this feature works for a few commands, like installing the SSM agent, but it doesn't work for a lot of commands, especially if they take time (are blocking). For that it's better to launch them with the bare minimum (install ssm agent, python) and then use an ansible playbook to install the rest.
aws  documentation  guide  reference  howto  run  shell  commands  linux  instance  launch  ansible  playbook 
august 2018 by racl101
Launching an Instance from a Launch Template - Amazon Elastic Compute Cloud
Launch templates actually work if you launch ec2 instances the same way every time. By 'same way', however, I mean same volume size, same volume type, same security groups, same subnet, etc. However, this service is not ideal for launching, say LAMP servers, with same configuration. For that you should either use an Ansible playbook or and/or create your own AMI and launch instances from that. In other words, don't use the User Data EC2 setting to run a bunch of commands as it is not reliable.
aws  documentation  guide  reference  howto  tutorial  launch  instance  ec2  from  template 
august 2018 by racl101
Boto 3 Documentation — Boto 3 Docs 1.7.80 documentation
Excellent library to use the AWS CLI but with a Python library wrapping it. If you hate using the Bash Shell script to work with AWS CLI and love Python 2.7 then use this library.

So far, I've tried it for the following services:

- EC2
- S3
- Scaling Groups
- SSM
boto3  python  python2.7  documentation  guide  reference  aws  cli  sdk  ec2  s3  library  module 
august 2018 by racl101
ansible - how to define ssh private key for servers fetched by dynamic inventory in files - Stack Overflow
if you don't want to have to create a file in group_vars with an odd name like tag_Name_server1.yml and you happen to know that all your AWS EC2 instances might share the same SSH keys you could do something like this: ansible -i ./inventory/ec2.py --limit "tag_Name_server1" -m ping all and then just create this file: ./inventory/group_vars/all.yml . So even though you're using all the --limit option filters the number of hosts to only those with the right tag/value combination.
stackoverflow  ansible  howto  define  ssh  private  key  aws  ec2  servers  hosts  fetched  from  dynamic  inventory  scripts  connection  interpreter  example  guide  reference  group  variables  group_vars 
july 2018 by racl101
Ansible dynamic inventory with AWS EC2 · Keep moving
Really good tutorial explaining how to actually use AWS EC2 dynamic inventory script (ec2.py) AND how to limit the instances you want to run your ansible commands or ansible playbooks on using the --limit option by leveraging EC2 tags.
blog  tutorial  howto  example  guide  reference  ansible  dynamic  inventory  script  python  aws  ec2  tags 
july 2018 by racl101
Working With Dynamic Inventory — Ansible Documentation
When working with AWS EC2 dynamic inventory script refer to this blog post tutorial which demonstrates how to use the --limit option when running the ansible / ansible-playbook commands in tandem with EC2 tags to target the hosts you want to run playbook on.

https://dhoeric.github.io/2017/ansible-with-aws
ansible  documentation  guide  reference  howto  dynamic  inventory  example  tutorial  amazon  aws  ec2  script 
july 2018 by racl101
Troubleshooting Systems Manager Run Command - AWS Systems Manager
If your instances don't show up on SSM service console check the following:

- If using non admin/account owner users (i.e. IAM users) check if they have the right policies attached to them.
- Do the EC2 instances in question have SSM Agent software installed on them
- Do the EC2 instances in question have the Role containing the policy named AmazonEC2RoleforSSM attached to it and, if so, has the instance been restarted after having the role attached to it?
- Is type of command that is being run available for the OS in question
aws  amazon  ssm  howto  troubleshoot  guide  reference  ec2  instance  role  policy  user  iam  fix  toread  tolearn  tounderstand 
july 2018 by racl101
Configuring Access to Systems Manager - AWS Systems Manager
To be able to use AWS SSM service on EC2 instances (which allows one to run shell scripts by having AWS invoke script execution directly) you need to configure the users invoking the ssm service directly with the right policies and configure the EC2 instances with the proper roles.
aws  documentation  guide  reference  ssm  systems  manager  prerequisite  toread  tolearn  tounderstand  configuration  policy  policies  roles  ec2  iam  users 
july 2018 by racl101
Using aws-cli --query Option To Simplify Output - Alestic.com
Nice little tutorial demonstrating how to capture AWS command output from Bash Shell scripts into variables to use in scripts.

e.g. Get the status of an RDS Instance e.g. started, stopped, starting, stopping, modifying that sort of thing. You can do it like this:

rds_instance_status=$(aws --profile my-profile rds describe-db-instances --db-instance-identifier helis-staging-rds-instance-1 --query 'DBInstances[0].DBInstanceStatus')

Note that the query option drills down the output, which, by default is returned as JSON text.
blog  tutorial  howto  example  guide  reference  capture  aws  cli  commandline  output  bash  shell  script  query  json  totry  tolearn  tounderstand 
july 2018 by racl101
RDS — Boto 3 Docs 1.7.50 documentation
E.g.

waiter = rds_client.get_waiter('db_instance_available')

waiter.wait(
DBInstanceIdentifier=rds_instance_identifier
boto3  aws  python  python2.7  library  module  documentation  guide  reference  rds  service  waiter  wait  classes 
july 2018 by racl101
RDS — Boto 3 Docs 1.7.50 documentation
e.g. response=rds_client.start_db_instance(DBInstanceIdentifier=rds_instance_identifier)
boto3  aws  python  python2.7  library  module  documentation  guide  reference  rds  service  client  commands 
july 2018 by racl101
How to use Python Boto3 to list Instances in Amazon AWS – Super Library of Solutions
Shows a simple example of how to begin using boto3 library for Python in the simplest of ways.

When reading through the library it's not very clear from the get go how to select a saved profile your ~/.aws/credentials directory which you create when you install the awscli tool into your development machine and configure with $ aws configure command. So here's how you quickly select a profile to create a session for boto3 and then create an s3 client for example.

session = boto3.Session(profile_name='my-profile-name')

s3_client = session.client('s3')

Now with your client you run commands. For example, to list all buckets run:

response=s3_client.list_buckets()
blog  tutorial  boto3  python  python2.7  aws  amazon  cli  script  howto  example  ec2  guide  reference  totry  tolearn  tounderstand 
july 2018 by racl101
Update Amazon RDS max_connections with Parameter Group · Issue #16 · jollygoodcode/jollygoodcode.github.io
This thread discussion might provide some insight into manually increasing the mysql max_connections option / setting manually and overriding Amazon's AWS "sensible" defaults.
github  forum  aws  amazon  howto  override  change  mysql  database  db  option  variable  max_connections  setting  totry  example  guide  reference 
april 2018 by racl101
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