def send_info(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
local_hostname = hookenv.local_unit().replace('/', '-')
hdfs_port = hadoop.dist_config.port('namenode')
webhdfs_port = hadoop.dist_config.port('nn_webapp_http')
utils.update_kv_hosts(
{node['ip']: node['host']
for node in datanode.nodes()})
utils.manage_etc_hosts()
datanode.send_spec(hadoop.spec())
datanode.send_namenodes([local_hostname])
datanode.send_ports(hdfs_port, webhdfs_port)
datanode.send_ssh_key(utils.get_ssh_key('hdfs'))
datanode.send_hosts_map(utils.get_kv_hosts())
slaves = [node['host'] for node in datanode.nodes()]
if data_changed('namenode.slaves', slaves):
unitdata.kv().set('namenode.slaves', slaves)
hdfs.register_slaves(slaves)
hookenv.status_set(
'active', 'Ready ({count} DataNode{s})'.format(
count=len(slaves),
s='s' if len(slaves) > 1 else '',
))
set_state('namenode.ready')
def configure_hdfs(namenode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
utils.update_kv_hosts(namenode.hosts_map())
utils.manage_etc_hosts()
if not namenode.namenodes():
data = yaml.dump(
{
'relation_name': namenode.relation_name,
'conversations': {
conv.key: dict({'relation_ids': conv.relation_ids},
**conv.serialize(conv))
for conv in namenode.conversations()
},
'relation_data': {
rid: {
unit: hookenv.relation_get(unit=unit, rid=rid)
for unit in hookenv.related_units(rid)
}
for rid in hookenv.relation_ids(namenode.relation_name)
},
},
default_flow_style=False)
for line in data.splitlines():
hookenv.log(line)
hdfs.configure_hdfs_base(namenode.namenodes()[0], namenode.port())
set_state('hadoop.hdfs.configured')
def send_info(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
local_hostname = hookenv.local_unit().replace('/', '-')
hdfs_port = hadoop.dist_config.port('namenode')
webhdfs_port = hadoop.dist_config.port('nn_webapp_http')
utils.update_kv_hosts(datanode.hosts_map())
utils.manage_etc_hosts()
datanode.send_spec(hadoop.spec())
datanode.send_namenodes([local_hostname])
datanode.send_ports(hdfs_port, webhdfs_port)
datanode.send_ssh_key(utils.get_ssh_key('hdfs'))
datanode.send_hosts_map(utils.get_kv_hosts())
slaves = datanode.nodes()
if data_changed('namenode.slaves', slaves):
unitdata.kv().set('namenode.slaves', slaves)
hdfs.register_slaves(slaves)
hdfs.refresh_slaves()
hookenv.status_set('active', 'Ready ({count} DataNode{s})'.format(
count=len(slaves),
s='s' if len(slaves) > 1 else '',
))
set_state('namenode.ready')
def stop_datanode():
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.stop_datanode()
hdfs.stop_journalnode()
hadoop.close_ports('datanode')
remove_state('datanode.started')
def configure_hdfs(namenode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
utils.update_kv_hosts(namenode.hosts_map())
utils.manage_etc_hosts()
if not namenode.namenodes():
data = yaml.dump({
'relation_name': namenode.relation_name,
'conversations': {
conv.key: dict({'relation_ids': conv.relation_ids},
**conv.serialize(conv))
for conv in namenode.conversations()
},
'relation_data': {
rid: {
unit: hookenv.relation_get(unit=unit, rid=rid)
for unit in hookenv.related_units(rid)
} for rid in hookenv.relation_ids(namenode.relation_name)
},
}, default_flow_style=False)
for line in data.splitlines():
hookenv.log(line)
hdfs.configure_hdfs_base(
namenode.clustername(), namenode.namenodes(),
namenode.port(), namenode.webhdfs_port())
set_state('hadoop.hdfs.configured')
def send_info(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
local_hostname = hookenv.local_unit().replace("/", "-")
hdfs_port = hadoop.dist_config.port("namenode")
webhdfs_port = hadoop.dist_config.port("nn_webapp_http")
utils.update_kv_hosts({node["ip"]: node["host"] for node in datanode.nodes()})
utils.manage_etc_hosts()
datanode.send_spec(hadoop.spec())
datanode.send_namenodes([local_hostname])
datanode.send_ports(hdfs_port, webhdfs_port)
datanode.send_ssh_key(utils.get_ssh_key("hdfs"))
datanode.send_hosts_map(utils.get_kv_hosts())
slaves = [node["host"] for node in datanode.nodes()]
if data_changed("namenode.slaves", slaves):
unitdata.kv().set("namenode.slaves", slaves)
hdfs.register_slaves(slaves)
hookenv.status_set(
"active", "Ready ({count} DataNode{s})".format(count=len(slaves), s="s" if len(slaves) > 1 else "")
)
set_state("namenode.ready")
def update_zk_config(zookeeper):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
zk_nodes = sorted(zookeeper.zookeepers(), key=itemgetter('host'))
zk_started = is_state('namenode.zk.started')
hdfs.configure_zookeeper(zk_nodes)
if zk_started and data_changed('namenode.zk', zk_nodes):
hdfs.restart_zookeeper()
def start_datanode(namenode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
update_config(namenode) # force config update
hdfs.start_datanode()
hdfs.start_journalnode()
hadoop.open_ports('datanode')
set_state('datanode.started')
def update_slaves(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
slaves = datanode.nodes()
if data_changed('namenode.slaves', slaves):
unitdata.kv().set('namenode.slaves', slaves)
hdfs.register_slaves(slaves)
hdfs.reload_slaves()
set_state('namenode.ready')
def start_datanode(namenode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.configure_datanode(namenode.namenodes()[0], namenode.port())
utils.install_ssh_key('hdfs', namenode.ssh_key())
utils.update_kv_hosts(namenode.hosts_map())
utils.manage_etc_hosts()
hdfs.start_datanode()
hadoop.open_ports('datanode')
set_state('datanode.started')
def start_zookeeper(zookeeper):
local_hostname = hookenv.local_unit().replace('/', '-')
if local_hostname not in get_cluster_nodes():
# can't run zkfc on a non-cluster node
return
update_zk_config(zookeeper) # ensure config is up to date
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.restart_namenode()
hdfs.start_zookeeper()
set_state('namenode.zk.started')
def configure_namenode():
local_hostname = hookenv.local_unit().replace('/', '-')
private_address = hookenv.unit_get('private-address')
ip_addr = utils.resolve_private_address(private_address)
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.configure_namenode()
hdfs.format_namenode()
hdfs.start_namenode()
hdfs.create_hdfs_dirs()
hadoop.open_ports('namenode')
utils.update_kv_hosts({ip_addr: local_hostname})
set_state('namenode.started')
def configure_namenode():
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.configure_namenode(get_cluster_nodes())
hdfs.format_namenode()
hdfs.start_namenode()
hdfs.create_hdfs_dirs()
hadoop.open_ports('namenode')
utils.initialize_kv_host()
utils.manage_etc_hosts()
set_state('namenode.started')
def configure_namenode():
local_hostname = hookenv.local_unit().replace("/", "-")
private_address = hookenv.unit_get("private-address")
ip_addr = utils.resolve_private_address(private_address)
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.configure_namenode()
hdfs.format_namenode()
hdfs.start_namenode()
hdfs.create_hdfs_dirs()
hadoop.open_ports("namenode")
utils.update_kv_hosts({ip_addr: local_hostname})
set_state("namenode.started")
def init_ha_standby(datanode, cluster):
"""
Once initial HA setup is done, any new NameNode is started as standby.
"""
local_hostname = hookenv.local_unit().replace('/', '-')
if local_hostname not in get_cluster_nodes():
# can't even bootstrapStandby if not in the list of chosen nodes
return
update_ha_config(datanode) # ensure the config is written
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
update_ha_config(datanode)
hdfs.bootstrap_standby()
hdfs.start_namenode()
cluster.standby_ready()
set_state('namenode.standby')
hadoop.open_ports('namenode')
set_state('namenode.started')
def unregister_datanode(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
slaves = unitdata.kv().get('namenode.slaves', [])
slaves_leaving = datanode.nodes() # only returns nodes in "leaving" state
hookenv.log('Slaves leaving: {}'.format(slaves_leaving))
slaves_remaining = list(set(slaves) - set(slaves_leaving))
unitdata.kv().set('namenode.slaves', slaves_remaining)
hdfs.register_slaves(slaves_remaining)
hdfs.reload_slaves()
utils.remove_kv_hosts(slaves_leaving)
utils.manage_etc_hosts()
if not slaves_remaining:
remove_state('namenode.ready')
datanode.dismiss()
def update_ha_config(datanode):
cluster_nodes = get_cluster_nodes()
jn_nodes = sorted(datanode.nodes())
jn_port = datanode.jn_port()
started = is_state('namenode.started')
new_cluster_config = data_changed('namenode.cluster-nodes', cluster_nodes)
new_jn_config = data_changed('namenode.jn.config', (jn_nodes, jn_port))
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.configure_namenode(cluster_nodes)
hdfs.register_journalnodes(jn_nodes, jn_port)
if started and new_cluster_config:
hdfs.restart_namenode()
elif started and new_jn_config:
hdfs.reload_slaves() # is this actually necessary?
def unregister_datanode(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
nodes_leaving = datanode.nodes() # only returns nodes in "leaving" state
slaves = unitdata.kv().get('namenode.slaves', [])
slaves_leaving = [node['host'] for node in nodes_leaving]
hookenv.log('Slaves leaving: {}'.format(slaves_leaving))
slaves_remaining = list(set(slaves) - set(slaves_leaving))
unitdata.kv().set('namenode.slaves', slaves_remaining)
hdfs.register_slaves(slaves_remaining)
utils.remove_kv_hosts(slaves_leaving)
utils.manage_etc_hosts()
if not slaves_remaining:
hookenv.status_set('blocked', 'Waiting for relation to DataNodes')
remove_state('namenode.ready')
datanode.dismiss()
def unregister_datanode(datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
nodes_leaving = datanode.nodes() # only returns nodes in "leaving" state
slaves = unitdata.kv().get("namenode.slaves", [])
slaves_leaving = [node["host"] for node in nodes_leaving]
hookenv.log("Slaves leaving: {}".format(slaves_leaving))
slaves_remaining = list(set(slaves) - set(slaves_leaving))
unitdata.kv().set("namenode.slaves", slaves_remaining)
hdfs.register_slaves(slaves_remaining)
utils.remove_kv_hosts(slaves_leaving)
utils.manage_etc_hosts()
if not slaves_remaining:
hookenv.status_set("blocked", "Waiting for relation to DataNodes")
remove_state("namenode.ready")
datanode.dismiss()
def ganglia_changed():
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
yarn = YARN(hadoop)
if is_state('namenode.started'):
hdfs.restart_namenode()
if is_state('datanode.started'):
hdfs.restart_datanode()
if is_state('journalnode.started'):
hdfs.restart_journalnode()
if is_state('resourcemanager.started'):
yarn.restart_resourcemanager()
if is_state('nodemanager.started'):
yarn.restart_nodemanager()
def ganglia_changed():
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
yarn = YARN(hadoop)
if is_state('namenode.started'):
hdfs.restart_namenode()
if is_state('datanode.started'):
hdfs.restart_datanode()
if is_state('journalnode.started'):
hdfs.restart_journalnode()
if is_state('resourcemanager.started'):
yarn.restart_resourcemanager()
if is_state('nodemanager.started'):
yarn.restart_nodemanager()
def configure_ha(cluster, datanode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
cluster_nodes = cluster.nodes()
jn_nodes = datanode.nodes()
jn_port = datanode.jn_port()
if data_changed('namenode.ha', [cluster_nodes, jn_nodes, jn_port]):
utils.update_kv_hosts(cluster.hosts_map())
utils.manage_etc_hosts()
hdfs.register_journalnodes(jn_nodes, jn_port)
hdfs.restart_namenode()
datanode.send_namenodes(cluster_nodes)
if not is_state('namenode.shared-edits.init'):
hdfs.init_sharededits()
set_state('namenode.shared-edits.init')
def init_ha_active(datanode, cluster):
"""
Do initial HA setup on the leader.
"""
local_hostname = hookenv.local_unit().replace('/', '-')
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.stop_namenode()
remove_state('namenode.started')
# initial cluster is us (active) plus a standby
set_cluster_nodes([local_hostname, cluster.nodes()[0]])
update_ha_config(datanode)
hdfs.init_sharededits()
hdfs.start_namenode()
leadership.leader_set({'ha-initialized': 'true'})
set_state('namenode.started')
def update_config(namenode):
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
utils.update_kv_hosts(namenode.hosts_map())
utils.manage_etc_hosts()
namenode_data = (
namenode.clustername(), namenode.namenodes(),
namenode.port(), namenode.webhdfs_port(),
)
if data_changed('datanode.namenode-data', namenode_data):
hdfs.configure_datanode(*namenode_data)
if is_state('datanode.started'): # re-check because for manual call
hdfs.restart_datanode()
hdfs.restart_journalnode()
if data_changed('datanode.namenode-ssh-key', namenode.ssh_key()):
utils.install_ssh_key('hdfs', namenode.ssh_key())
def stop_zookeeper():
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.stop_zookeeper()
remove_state('namenode.zk.started')
def format_zookeeper(zookeeper):
update_zk_config(zookeeper) # ensure config is up to date
hadoop = get_hadoop_base()
hdfs = HDFS(hadoop)
hdfs.format_zookeeper()
leadership.leader_set({'zk-formatted': 'true'})
