def check_nifi_process_status(self, pid_file):
"""
Function checks whether process is running.
Process is considered running, if pid file exists, and process with
a pid, mentioned in pid file is running
If process is not running, will throw ComponentIsNotRunning exception
@param pid_file: path to service pid file
"""
if not pid_file or not os.path.isfile(pid_file):
raise ComponentIsNotRunning()
try:
lines = [line.rstrip('\n') for line in open(pid_file)]
pid = int(lines[2].split('=')[1]);
except:
Logger.warn("Pid file {0} does not exist".format(pid_file))
raise ComponentIsNotRunning()
code, out = shell.call(["ps","-p", str(pid)])
if code:
Logger.debug("Process with pid {0} is not running. Stale pid file"
" at {1}".format(pid, pid_file))
raise ComponentIsNotRunning()
pass
def resolve_ambari_config():
config_path = os.path.abspath(AmbariConfig.getConfigFile())
try:
if os.path.exists(config_path):
agent_config.read(config_path)
else:
raise Exception("No config found at %s" % str(config_path))
except Exception, err:
Logger.warn(err)
def resolve_ambari_config():
config_path = os.path.abspath(AmbariConfig.getConfigFile())
try:
if os.path.exists(config_path):
agent_config.read(config_path)
else:
raise Exception("No config found at %s" % str(config_path))
except Exception, err:
Logger.warn(err)
def start(self, env):
import params
env.set_params(params)
self.configure(env, action = 'start')
start_cmd = format("{ams_grafana_script} start")
Execute(start_cmd,
user=params.ams_user,
not_if = params.grafana_process_exists_cmd,
)
pidfile = format("{ams_grafana_pid_dir}/grafana-server.pid")
if not sudo.path_exists(pidfile):
Logger.warn("Pid file doesn't exist after starting of the component.")
else:
Logger.info("Grafana Server has started with pid: {0}".format(sudo.read_file(pidfile).strip()))
# Create datasource
create_ams_datasource()
# Create pre-built dashboards
create_ams_dashboards()
def __dump_db(self, command, type, is_db_here):
dump_dir = "/etc/hive/dbdump"
dump_file = format(
"{dump_dir}/hive-{stack_version_formatted}-{type}-dump.sql")
if is_db_here:
if not os.path.exists(dump_dir):
Directory(dump_dir)
Execute(format(command), user="******")
Logger.info(
format(
"Hive Metastore database backup created at {dump_file}"))
else:
Logger.warn(
format(
"Hive Metastore is using an external {hive_metastore_db_type} database, the connection url is {hive_jdbc_connection_url}."
))
Logger.warn(
format(
"Please log in to that host, and create a db backup manually by executing the following command: \"{command}\", then click on 'IGNORE AND PROCEED'"
))
raise Fail()
