You need to run mount command on instance. 2 way for it. One is the sending command with a ssh connection like @mootmoot wrote. The other one is the sending command with AWS SSM service like @Mark B wrote. Here is the detailed SSM solution sample, you can ignore unnecessary parts for you:
Send bash command to instances using AWS SSM:
# Amazon EC2 Systems Manager requires
# 1. An IAM role for EC2 instances that will process commands. There should be a system manager role and the instance should use this role ! (Did it while creation instance)
# 2. And a separate role for users executing commands. Aws IAM user that has access and secret keys should have ssm permission. (i.e. AmazonSSMFullAccess)
# http://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-configuring-access-policies.html
def execute_commands_on_linux_instances(commands, instance_ids):
client = boto3.client('ssm', **conn_args) # Need your credentials here
all_ssm_enabled_instances, ssm_enabled_instances, not_worked_instances = [],[],[]
not_worked_instances = instance_ids.copy()
all_ssm_enabled_instances = list()
outputs = list({})
not_executed = list()
# Select only the Instances that have an active ssm agent.
if len(client.describe_instance_information()['InstanceInformationList']) > 0:
resp = client.describe_instance_information(MaxResults=20)['InstanceInformationList']
for ins in resp:
all_ssm_enabled_instances.append(ins['InstanceId'])
ssm_enabled_instances = list(set(all_ssm_enabled_instances).intersection(instance_ids))
not_worked_instances = list(set(instance_ids).difference(all_ssm_enabled_instances))
# Now, send the command !
resp = client.send_command(
DocumentName="AWS-RunShellScript",
Parameters={'commands': [commands]},
InstanceIds=ssm_enabled_instances,
)
# get the command id generated by the send_command
com_id = resp['Command']['CommandId']
# Wait until all the commands status are out of Pending and InProgress
list_comm = client.list_commands( CommandId=com_id)
while True:
list_comm = client.list_commands( CommandId=com_id)
if (list_comm['Commands'][0]['Status'] == 'Pending'or list_comm['Commands'][0]['Status'] == 'InProgress'):
continue
else:
# Commands on all Instances were executed
break
# Get the responses the instances gave to this command. (stdoutput and stderror)
# Althoug the command could arrive to instance, if it couldn't be executed by the instance (response -1) it will ignore.
for i in ssm_enabled_instances:
resp2 = client.get_command_invocation(CommandId=com_id, InstanceId=i)
if resp2['ResponseCode'] == -1:
not_executed.append(i)
else:
outputs.append({'ins_id': i, 'stdout': resp2['StandardOutputContent'],
'stderr': resp2['StandardErrorContent']})
# Remove the instance that couldn't execute the command ever, add it to not_worked_instances
ssm_enabled_instances = list(set(ssm_enabled_instances).difference(not_executed))
not_worked_instances.extend(not_executed)
return ssm_enabled_instances, not_worked_instances, outputs
else:
print("There is no any available instance that has a worked SSM service!")
return ssm_enabled_instances, not_worked_instances, outputs
Create Instances with required IAM Instance profile that has required role that has required policy. As a result of this instance creation, instances have running SSM agents:
def create_ec2_instance(node_type):
# define userdata to be run at instance launch
userdata = """#cloud-config
runcmd:
- cd /tmp
- sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm
"""
ec2_r = boto3.resource('ec2', **conn_args)
rolename = "amazonec2ssmrole"
i_pro_name = "ins_pro_for_ssm"
# Create an iam instance profile and add required role to this instance profile.
# Create a role and attach a policy to it if not exist.
# Instances will have this role to build ssm (ec2 systems manager) connection.
iam = boto3.resource('iam', **conn_args)
try:
response= iam.meta.client.get_instance_profile(InstanceProfileName=i_pro_name)
except:
iam.create_instance_profile(InstanceProfileName=i_pro_name)
try:
response = iam.meta.client.get_role(RoleName=rolename)
except:
iam.create_role(
AssumeRolePolicyDocument='{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"Service":["ec2.amazonaws.com"]},"Action":["sts:AssumeRole"]}]}',
RoleName=rolename)
role = iam.Role(rolename)
role.attach_policy(PolicyArn='arn:aws:iam::aws:policy/service-role/AmazonEC2RoleforSSM')
iam.meta.client.add_role_to_instance_profile(InstanceProfileName=i_pro_name, RoleName=rolename)
iam_ins_profile = {'Name': i_pro_name}
if node_type == "Medium":
instance = ec2_r.create_instances(
ImageId='ami-aa5ebdd2',
MinCount=1,
MaxCount=1,
UserData=userdata,
InstanceType='t2.medium',
KeyName=key_pair_name,
IamInstanceProfile=iam_ins_profile,
BlockDeviceMappings=[{"DeviceName": "/dev/xvda", "Ebs": {"VolumeSize": 20}}])
elif node_type == "Micro":
instance = ec2_r.create_instances(
ImageId='ami-aa5ebdd2',
MinCount=1,
MaxCount=1,
UserData=userdata,
InstanceType='t2.micro',
KeyName=key_pair_name,
IamInstanceProfile=iam_ins_profile,
BlockDeviceMappings=[{"DeviceName": "/dev/xvda", "Ebs": {"VolumeSize": 10}}])
else:
print("Node Type Error")
return -1
# Wait for the instance state, default --> one wait is 15 seconds, 40 attempts
print('Waiting for instance {0} to switch to running state'.format(instance[0].id))
waiter = ec2_r.meta.client.get_waiter('instance_running')
waiter.wait(InstanceIds=[instance[0].id])
instance[0].reload()
print('Instance is running, public IP: {0}'.format(instance[0].public_ip_address))
return instance[0].id
Don't forget giving ssm permission. (i.e. AmazonSSMFullAccess) to the Aws IAM user that has access and secret keys.
By the way, conn_args can be defined as follows:
conn_args = {
'aws_access_key_id': Your_Access_Key,
'aws_secret_access_key': Your_Secret_Key,
'region_name': 'us-west-2'
}
