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Fix failed Dask worker pod launch due to invalid username characters #928

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merged 2 commits into from
Jun 24, 2022
Merged

Fix failed Dask worker pod launch due to invalid username characters #928

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f855471
Fix failed Dask worker pod launch due to invalid username characters
jmettes Jun 24, 2022
aea242c
Close existing clusters
robbibt Jun 24, 2022
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17 changes: 15 additions & 2 deletions Tools/dea_tools/dask.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@
create_local_dask_cluster
create_dask_gateway_cluster

Last modified: March 2020
Last modified: June 2022

'''

Expand Down Expand Up @@ -111,9 +111,22 @@ def create_dask_gateway_cluster(profile='r5_L', workers=2):
"""
try:
gateway = Gateway()

# Close any existing clusters
cluster_names = gateway.list_clusters()
if len(cluster_names) > 0:
print("Cluster(s) still running:", cluster_names)
for n in cluster_names:
cluster = gateway.connect(n.name)
cluster.shutdown()

options = gateway.cluster_options()
options['profile'] = profile
options['jupyterhub_user'] = os.getenv('JUPYTERHUB_USER')

# limit username to alphanumeric characters
# kubernetes pods won't launch if labels contain anything other than [a-Z, -, _]
options['jupyterhub_user'] = ''.join(c if c.isalnum() else '-' for c in os.getenv('JUPYTERHUB_USER'))

cluster = gateway.new_cluster(options)
cluster.scale(workers)
return cluster
Expand Down