def start_cluster(self, cluster):
nn_instance = utils.get_instance(cluster, "namenode")
sm_instance = utils.get_instance(cluster, "master")
dn_instances = utils.get_instances(cluster, "datanode")
# Start the name node
with remote.get_remote(nn_instance) as r:
run.format_namenode(r)
run.start_processes(r, "namenode")
# start the data nodes
self._start_slave_datanode_processes(dn_instances)
LOG.info(_LI("Hadoop services in cluster %s have been started"),
cluster.name)
with remote.get_remote(nn_instance) as r:
r.execute_command("sudo -u hdfs hdfs dfs -mkdir -p /user/$USER/")
r.execute_command("sudo -u hdfs hdfs dfs -chown $USER "
"/user/$USER/")
# start spark nodes
if sm_instance:
with remote.get_remote(sm_instance) as r:
run.start_spark_master(r, self._spark_home(cluster))
LOG.info(_LI("Spark service at '%s' has been started"),
sm_instance.hostname())
LOG.info(_LI('Cluster %s has been started successfully'), cluster.name)
self._set_cluster_info(cluster)
def start_cluster(self, cluster):
nn_instance = utils.get_instance(cluster, "namenode")
sm_instance = utils.get_instance(cluster, "master")
dn_instances = utils.get_instances(cluster, "datanode")
# Start the name node
with remote.get_remote(nn_instance) as r:
run.format_namenode(r)
run.start_processes(r, "namenode")
# start the data nodes
self._start_slave_datanode_processes(dn_instances)
LOG.info("Hadoop services in cluster %s have been started" %
cluster.name)
with remote.get_remote(nn_instance) as r:
r.execute_command("sudo -u hdfs hdfs dfs -mkdir -p /user/$USER/")
r.execute_command(("sudo -u hdfs hdfs dfs -chown $USER "
"/user/$USER/"))
# start spark nodes
if sm_instance:
with remote.get_remote(sm_instance) as r:
run.start_spark_master(r, self._spark_home(cluster))
LOG.info("Spark service at '%s' has been started",
sm_instance.hostname())
LOG.info('Cluster %s has been started successfully' % cluster.name)
self._set_cluster_info(cluster)
def scale_cluster(self, cluster, instances):
master = utils.get_instance(cluster, "master")
r_master = remote.get_remote(master)
run.stop_spark(r_master, self._spark_home(cluster))
self._setup_instances(cluster, instances)
nn = utils.get_instance(cluster, "namenode")
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
self._start_slave_datanode_processes(instances)
run.start_spark_master(r_master, self._spark_home(cluster))
LOG.info(_LI("Spark master service at '%s' has been restarted"), master.hostname())
def scale_cluster(self, cluster, instances):
master = utils.get_instance(cluster, "master")
r_master = remote.get_remote(master)
run.stop_spark(r_master, self._spark_home(cluster))
self._setup_instances(cluster, instances)
nn = utils.get_instance(cluster, "namenode")
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
self._start_slave_datanode_processes(instances)
run.start_spark_master(r_master, self._spark_home(cluster))
LOG.info(_LI("Spark master service at '%s' has been restarted"),
master.hostname())
def scale_cluster(self, cluster, instances):
master = utils.get_instance(cluster, "master")
r_master = remote.get_remote(master)
run.stop_spark(r_master, self._spark_home(cluster))
self._setup_instances(cluster, instances)
nn = utils.get_instance(cluster, "namenode")
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
dn_instances = [instance for instance in instances if "datanode" in instance.node_group.node_processes]
self._start_datanode_processes(dn_instances)
run.start_spark_master(r_master, self._spark_home(cluster))
LOG.info(_LI("Spark master service has been restarted"))
def scale_cluster(self, cluster, instances):
master = utils.get_instance(cluster, "master")
r_master = remote.get_remote(master)
run.stop_spark(r_master, self._spark_home(cluster))
self._setup_instances(cluster, instances)
nn = utils.get_instance(cluster, "namenode")
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
dn_instances = [instance for instance in instances if
'datanode' in instance.node_group.node_processes]
self._start_datanode_processes(dn_instances)
swift_helper.install_ssl_certs(instances)
run.start_spark_master(r_master, self._spark_home(cluster))
LOG.info("Spark master service has been restarted")
def scale_cluster(self, cluster, instances):
master = utils.get_instance(cluster, "master")
r_master = remote.get_remote(master)
run.stop_spark(r_master, self._spark_home(cluster))
self._setup_instances(cluster, instances)
nn = utils.get_instance(cluster, "namenode")
run.refresh_nodes(remote.get_remote(nn), "dfsadmin")
dn_instances = [
instance for instance in instances
if 'datanode' in instance.node_group.node_processes
]
self._start_datanode_processes(dn_instances)
run.start_spark_master(r_master, self._spark_home(cluster))
LOG.info(
_LI("Spark master service at {host} has been restarted").format(
host=master.hostname()))
def decommission_sl(master, inst_to_be_deleted, survived_inst):
if survived_inst is not None:
slavenames = []
for slave in survived_inst:
slavenames.append(slave.hostname())
slaves_content = c_helper.generate_spark_slaves_configs(slavenames)
else:
slaves_content = "\n"
r_master = remote.get_remote(master)
run.stop_spark(r_master)
# write new slave file to master
files = {'/opt/spark/conf/slaves': slaves_content}
r_master.write_files_to(files)
# write new slaves file to each survived slave as well
for i in survived_inst:
with remote.get_remote(i) as r:
r.write_files_to(files)
run.start_spark_master(r_master)
def decommission_sl(master, inst_to_be_deleted, survived_inst):
if survived_inst is not None:
slavenames = []
for slave in survived_inst:
slavenames.append(slave.hostname())
slaves_content = c_helper.generate_spark_slaves_configs(slavenames)
else:
slaves_content = "\n"
cluster = master.cluster
sp_home = c_helper.get_config_value("Spark", "Spark home", cluster)
r_master = remote.get_remote(master)
run.stop_spark(r_master, sp_home)
# write new slave file to master
files = {os.path.join(sp_home, 'conf/slaves'): slaves_content}
r_master.write_files_to(files)
# write new slaves file to each survived slave as well
for i in survived_inst:
with remote.get_remote(i) as r:
r.write_files_to(files)
run.start_spark_master(r_master, sp_home)
def _start_spark(self, cluster, sm_instance):
with remote.get_remote(sm_instance) as r:
run.start_spark_master(r, self._spark_home(cluster))
LOG.info(_LI("Spark service has been started"))
def _start_spark(self, cluster, sm_instance):
with remote.get_remote(sm_instance) as r:
run.start_spark_master(r, self._spark_home(cluster))
LOG.info(
_LI("Spark service at {host} has been started").format(
host=sm_instance.hostname()))
def _start_spark(self, cluster, sm_instance):
with remote.get_remote(sm_instance) as r:
run.start_spark_master(r, self._spark_home(cluster))
LOG.info(_LI("Spark service has been started"))
def _start_spark(self, cluster, sm_instance):
with remote.get_remote(sm_instance) as r:
run.start_spark_master(r, self._spark_home(cluster))
LOG.info(_LI("Spark service at {host} has been started").format(
host=sm_instance.hostname()))
