def send_principal_yarn_info(principal, resourcemanager):
"""Send YARN data when the resourcemanager becomes ready."""
principal.set_installed(get_hadoop_version())
principal.set_yarn_ready(
resourcemanager.resourcemanagers(), resourcemanager.port(),
resourcemanager.hs_http(), resourcemanager.hs_ipc())
set_state('apache-bigtop-plugin.yarn.ready')
def send_principal_yarn_info(principal, resourcemanager):
"""Send YARN data when the resourcemanager becomes ready."""
principal.set_installed(get_hadoop_version())
principal.set_yarn_ready(resourcemanager.resourcemanagers(),
resourcemanager.port(), resourcemanager.hs_http(),
resourcemanager.hs_ipc())
set_state('apache-bigtop-plugin.yarn.ready')
def start_datanode(namenode):
hookenv.status_set('maintenance', 'starting datanode')
# NB: service should be started by install, but we want to verify it is
# running before we set the .started state and open ports. We always
# restart here, which may seem heavy-handed. However, restart works
# whether the service is currently started or stopped. It also ensures the
# service is using the most current config.
started = host.service_restart('hadoop-hdfs-datanode')
if started:
# Create a /user/ubuntu dir in HDFS (this is safe to run multiple times).
bigtop = Bigtop()
if not bigtop.check_hdfs_setup():
try:
utils.wait_for_hdfs(30)
bigtop.setup_hdfs()
except utils.TimeoutError:
# HDFS is not yet available or is still in safe mode, so we can't
# do the initial setup (create dirs); skip setting the .started
# state below so that we try again on the next hook.
hookenv.status_set('waiting', 'waiting on hdfs')
return
# HDFS is ready. Open ports and set .started, status, and app version
for port in get_layer_opts().exposed_ports('datanode'):
hookenv.open_port(port)
set_state('apache-bigtop-datanode.started')
hookenv.status_set('maintenance', 'datanode started')
hookenv.application_version_set(get_hadoop_version())
else:
hookenv.log('DataNode failed to start')
hookenv.status_set('blocked', 'datanode failed to start')
remove_state('apache-bigtop-datanode.started')
for port in get_layer_opts().exposed_ports('datanode'):
hookenv.close_port(port)
def start_namenode():
hookenv.status_set('maintenance', 'starting namenode')
# NB: service should be started by install, but this may be handy in case
# we have something that removes the .started state in the future. Also
# note we restart here in case we modify conf between install and now.
host.service_restart('hadoop-hdfs-namenode')
for port in get_layer_opts().exposed_ports('namenode'):
hookenv.open_port(port)
set_state('apache-bigtop-namenode.started')
hookenv.application_version_set(get_hadoop_version())
hookenv.status_set('maintenance', 'namenode started')
def start_namenode():
hookenv.status_set('maintenance', 'starting namenode')
# NB: service should be started by install, but this may be handy in case
# we have something that removes the .started state in the future. Also
# note we restart here in case we modify conf between install and now.
host.service_restart('hadoop-hdfs-namenode')
for port in get_layer_opts().exposed_ports('namenode'):
hookenv.open_port(port)
set_state('apache-bigtop-namenode.started')
hookenv.application_version_set(get_hadoop_version())
hookenv.status_set('maintenance', 'namenode started')
def start_resourcemanager(namenode):
hookenv.status_set('maintenance', 'starting resourcemanager')
# NB: service should be started by install, but this may be handy in case
# we have something that removes the .started state in the future. Also
# note we restart here in case we modify conf between install and now.
host.service_restart('hadoop-yarn-resourcemanager')
host.service_restart('hadoop-mapreduce-historyserver')
for port in get_layer_opts().exposed_ports('resourcemanager'):
hookenv.open_port(port)
set_state('apache-bigtop-resourcemanager.started')
hookenv.application_version_set(get_hadoop_version())
hookenv.status_set('maintenance', 'resourcemanager started')
def start_resourcemanager(namenode):
hookenv.status_set('maintenance', 'starting resourcemanager')
# NB: service should be started by install, but this may be handy in case
# we have something that removes the .started state in the future. Also
# note we restart here in case we modify conf between install and now.
host.service_restart('hadoop-yarn-resourcemanager')
host.service_restart('hadoop-mapreduce-historyserver')
for port in get_layer_opts().exposed_ports('resourcemanager'):
hookenv.open_port(port)
set_state('apache-bigtop-resourcemanager.started')
hookenv.application_version_set(get_hadoop_version())
hookenv.status_set('maintenance', 'resourcemanager started')
def install_hadoop_client_hdfs(principal, namenode):
"""Install if the namenode has sent its FQDN.
We only need the namenode FQDN to perform the plugin install, so poll for
namenodes() data whenever we have a namenode relation. This allows us to
install asap, even if 'namenode.ready' is not set yet.
"""
if namenode.namenodes():
hookenv.status_set('maintenance', 'installing plugin (hdfs)')
nn_host = namenode.namenodes()[0]
bigtop = Bigtop()
hosts = {'namenode': nn_host}
bigtop.render_site_yaml(hosts=hosts, roles='hadoop-client')
bigtop.trigger_puppet()
set_state('apache-bigtop-plugin.hdfs.installed')
hookenv.application_version_set(get_hadoop_version())
hookenv.status_set('maintenance', 'plugin (hdfs) installed')
else:
hookenv.status_set('waiting', 'waiting for namenode fqdn')
def install_hadoop_client_hdfs(principal, namenode):
"""Install if the namenode has sent its FQDN.
We only need the namenode FQDN to perform the plugin install, so poll for
namenodes() data whenever we have a namenode relation. This allows us to
install asap, even if 'namenode.ready' is not set yet.
"""
if namenode.namenodes():
hookenv.status_set('maintenance', 'installing plugin (hdfs)')
nn_host = namenode.namenodes()[0]
bigtop = Bigtop()
hosts = {'namenode': nn_host}
bigtop.render_site_yaml(hosts=hosts, roles='hadoop-client')
bigtop.trigger_puppet()
set_state('apache-bigtop-plugin.hdfs.installed')
hookenv.application_version_set(get_hadoop_version())
hookenv.status_set('maintenance', 'plugin (hdfs) installed')
else:
hookenv.status_set('waiting', 'waiting for namenode fqdn')
def start_nodemanager(namenode, resourcemanager):
hookenv.status_set('maintenance', 'starting nodemanager')
# NB: service should be started by install, but we want to verify it is
# running before we set the .started state and open ports. We always
# restart here, which may seem heavy-handed. However, restart works
# whether the service is currently started or stopped. It also ensures the
# service is using the most current config.
started = host.service_restart('hadoop-yarn-nodemanager')
if started:
for port in get_layer_opts().exposed_ports('nodemanager'):
hookenv.open_port(port)
set_state('apache-bigtop-nodemanager.started')
hookenv.status_set('maintenance', 'nodemanager started')
hookenv.application_version_set(get_hadoop_version())
else:
hookenv.log('NodeManager failed to start')
hookenv.status_set('blocked', 'nodemanager failed to start')
remove_state('apache-bigtop-nodemanager.started')
for port in get_layer_opts().exposed_ports('nodemanager'):
hookenv.close_port(port)
def start_namenode():
hookenv.status_set('maintenance', 'starting namenode')
# NB: service should be started by install, but we want to verify it is
# running before we set the .started state and open ports. We always
# restart here, which may seem heavy-handed. However, restart works
# whether the service is currently started or stopped. It also ensures the
# service is using the most current config.
started = host.service_restart('hadoop-hdfs-namenode')
if started:
for port in get_layer_opts().exposed_ports('namenode'):
hookenv.open_port(port)
set_state('apache-bigtop-namenode.started')
hookenv.status_set('maintenance', 'namenode started')
hookenv.application_version_set(get_hadoop_version())
else:
hookenv.log('NameNode failed to start')
hookenv.status_set('blocked', 'namenode failed to start')
remove_state('apache-bigtop-namenode.started')
for port in get_layer_opts().exposed_ports('namenode'):
hookenv.close_port(port)
def start_resourcemanager(namenode):
hookenv.status_set('maintenance', 'starting resourcemanager')
# NB: service should be started by install, but we want to verify it is
# running before we set the .started state and open ports. We always
# restart here, which may seem heavy-handed. However, restart works
# whether the service is currently started or stopped. It also ensures the
# service is using the most current config.
rm_started = host.service_restart('hadoop-yarn-resourcemanager')
if rm_started:
for port in get_layer_opts().exposed_ports('resourcemanager'):
hookenv.open_port(port)
set_state('apache-bigtop-resourcemanager.started')
hookenv.status_set('maintenance', 'resourcemanager started')
hookenv.application_version_set(get_hadoop_version())
else:
hookenv.log('YARN ResourceManager failed to start')
hookenv.status_set('blocked', 'resourcemanager failed to start')
remove_state('apache-bigtop-resourcemanager.started')
for port in get_layer_opts().exposed_ports('resourcemanager'):
hookenv.close_port(port)
hs_started = host.service_restart('hadoop-mapreduce-historyserver')
if not hs_started:
hookenv.log('YARN HistoryServer failed to start')
def send_principal_hdfs_info(principal, namenode):
"""Send HDFS data when the namenode becomes ready."""
principal.set_installed(get_hadoop_version())
principal.set_hdfs_ready(namenode.namenodes(), namenode.port())
set_state('apache-bigtop-plugin.hdfs.ready')
def send_principal_hdfs_info(principal, namenode):
"""Send HDFS data when the namenode becomes ready."""
principal.set_installed(get_hadoop_version())
principal.set_hdfs_ready(namenode.namenodes(), namenode.port())
set_state('apache-bigtop-plugin.hdfs.ready')
