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Add get-slaves option analogous to get-master #5

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Add get-slaves option analogous to get-master #5

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11 changes: 10 additions & 1 deletion ec2/spark_ec2.py
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,7 @@ class UsageError(Exception):
# Configure and parse our command-line arguments
def parse_args():
parser = OptionParser(usage="spark-ec2 [options] <action> <cluster_name>"
+ "\n\n<action> can be: launch, destroy, login, stop, start, get-master",
+ "\n\n<action> can be: launch, destroy, login, stop, start, get-master, get-slaves",
add_help_option=False)
parser.add_option("-h", "--help", action="help",
help="Show this help message and exit")
Expand Down Expand Up @@ -761,6 +761,15 @@ def real_main():
(master_nodes, slave_nodes) = get_existing_cluster(conn, opts, cluster_name)
print master_nodes[0].public_dns_name

elif action == "get-slaves":
(master_nodes, slave_nodes) = get_existing_cluster(conn, opts, cluster_name)

for slave in slave_nodes:
if not slave.public_dns_name and not opts.private_ips:
print("Slave has no public DNS name. Maybe you meant to specify --private-ips?")
else:
print(get_dns_name(slave, opts.private_ips))

elif action == "stop":
response = raw_input("Are you sure you want to stop the cluster " +
cluster_name + "?\nDATA ON EPHEMERAL DISKS WILL BE LOST, " +
Expand Down