def render_filebeat_template():
"""Create the filebeat.yaml config file.
Renders the appropriate template for the major version of filebeat that
is installed.
"""
# kube_logs requires access to k8s-related filesystem data. If configured,
# don't try to start filebeat until that data is present.
if config().get('kube_logs') and not os.path.exists(KUBE_CONFIG):
status.maint('Waiting for: {}'.format(KUBE_CONFIG))
return
version = charms.apt.get_package_version('filebeat')[0]
cfg_original_hash = file_hash(FILEBEAT_CONFIG)
connections = render_without_context('filebeat-{}.yml'.format(version),
FILEBEAT_CONFIG)
cfg_new_hash = file_hash(FILEBEAT_CONFIG)
# Ensure ssl files match config each time we render a new template
manage_filebeat_logstash_ssl()
remove_state('beat.render')
if connections:
if cfg_original_hash != cfg_new_hash:
service('restart', 'filebeat')
status.active('Filebeat ready.')
else:
# Stop the service when not connected to any log handlers.
# NB: beat base layer will handle setting a waiting status
service('stop', 'filebeat')
def remove_filebeat():
"""Stop, purge, and remove all traces of filebeat."""
status.maint('Removing filebeat.')
service_stop('filebeat')
try:
os.remove(FILEBEAT_CONFIG)
except OSError:
pass
charms.apt.purge('filebeat')
remove_beat_on_boot('filebeat')
remove_state('filebeat.autostarted')
def update_status():
if service_running('update-conda-mirror.service'):
pkgs = [
pkg for d in os.walk(str(temp_dir)) for pkg in d[2]
if pkg.endswith('.tar.bz2')
]
status.maint(f'Updating mirror - {len(pkgs)} packages downloaded')
else:
pkgs = [
pkg for d in os.walk(str(target_dir)) for pkg in d[2]
if pkg.endswith('.tar.bz2')
]
status.active(f'Conda mirror ready - {len(pkgs)} packages available')
def install_elastic_pkgs():
for pkg in ELASTIC_PKGS:
status.maint(f'Installing {pkg} from elastic.co apt repos')
charms.apt.queue_install([pkg])
set_flag('elastic.pkgs.installed')
def install_filebeat():
# Our layer options will initially install filebeat, so just set a
# message while we wait for the apt layer to do its thing.
status.maint('Preparing to install filebeat.')
def change_filebeat_repo():
"""Set a flag when the apt repo changes."""
# NB: we can't check for new versions yet because we cannot be sure that
# the apt update has completed. Set status and a flag to check later.
status.maint('Pending scan for apt repo changes.')
set_state('filebeat.repo.changed')
