def remove_ds_instance(dirsrv, force=False):
"""
This will delete the instance as it is define. This must be a local instance. This is
designed to raise exceptions quickly and often if *any* error is hit. However, this can
be run repeatedly, and only when the instance is truely removed, will this program fail
to run further.
:param dirsrv: A directory server instance
:type dirsrv: DirSrv
:param force: A psycological aid, for people who think force means do something, harder. Does
literally nothing in this program because state machines are a thing.
:type force: bool
"""
_log = dirsrv.log.getChild('remove_ds')
_log.debug("Removing instance %s" % dirsrv.serverid)
# Copy all the paths we are about to tamper with
remove_paths = {}
remove_paths['backup_dir'] = dirsrv.ds_paths.backup_dir
remove_paths['cert_dir'] = dirsrv.ds_paths.cert_dir
remove_paths['config_dir'] = dirsrv.ds_paths.config_dir
remove_paths['db_dir'] = dirsrv.ds_paths.db_dir
remove_paths['db_dir_parent'] = dirsrv.ds_paths.db_dir + "/../"
### WARNING: The changelogdb isn't removed. we assume it's in:
# db_dir ../changelogdb. So remove that too!
# abspath will resolve the ".." down.
remove_paths['changelogdb_dir'] = dirsrv.get_changelog_dir()
remove_paths['ldif_dir'] = dirsrv.ds_paths.ldif_dir
remove_paths['lock_dir'] = dirsrv.ds_paths.lock_dir
remove_paths['log_dir'] = dirsrv.ds_paths.log_dir
# remove_paths['run_dir'] = dirsrv.ds_paths.run_dir
remove_paths['inst_dir'] = dirsrv.ds_paths.inst_dir
remove_paths['etc_sysconfig'] = "%s/sysconfig/dirsrv-%s" % (
dirsrv.ds_paths.sysconf_dir, dirsrv.serverid)
tmpfiles_d_path = dirsrv.ds_paths.tmpfiles_d + "/dirsrv-" + dirsrv.serverid + ".conf"
# These are handled in a special way.
dse_ldif_path = os.path.join(dirsrv.ds_paths.config_dir, 'dse.ldif')
# Check the marker exists. If it *does not* warn about this, and say that to
# force removal you should touch this file.
_log.debug("Checking for instance marker at %s" % dse_ldif_path)
if not os.path.exists(dse_ldif_path):
_log.info("Instance configuration not found, no action will be taken")
_log.info("If you want us to cleanup anyway, recreate '%s'" %
dse_ldif_path)
return
_log.debug("Found instance marker at %s! Proceeding to remove ..." %
dse_ldif_path)
# Stop the instance (if running) and now we know it really does exist
# and hopefully have permission to access it ...
_log.debug("Stopping instance %s" % dirsrv.serverid)
dirsrv.stop()
_log.debug("Found instance marker at %s! Proceeding to remove ..." %
dse_ldif_path)
# Stop the instance (if running) and now we know it really does exist
# and hopefully have permission to access it ...
_log.debug("Stopping instance %s" % dirsrv.serverid)
dirsrv.stop()
### ANY NEW REMOVAL ACTION MUST BE BELOW THIS LINE!!!
# Remove these paths:
# for path in ('backup_dir', 'cert_dir', 'config_dir', 'db_dir',
# 'ldif_dir', 'lock_dir', 'log_dir', 'run_dir'):
for path_k in remove_paths:
_log.debug("Removing %s" % remove_paths[path_k])
shutil.rmtree(remove_paths[path_k], ignore_errors=True)
# Remove parent (/var/lib/dirsrv/slapd-INST)
shutil.rmtree(remove_paths['db_dir'].replace('db', ''), ignore_errors=True)
# We can not assume we have systemd ...
if dirsrv.ds_paths.with_systemd:
# Remove the systemd symlink
_log.debug("Removing the systemd symlink")
subprocess.check_call(
["systemctl", "disable", "dirsrv@{}".format(dirsrv.serverid)])
_log.debug("Removing %s" % tmpfiles_d_path)
shutil.rmtree(tmpfiles_d_path, ignore_errors=True)
# Nor can we assume we have selinux. Try docker sometime ;)
if dirsrv.ds_paths.with_selinux:
# Remove selinux port label
_log.debug("Removing the port labels")
selinux_label_port(dirsrv.port, remove_label=True)
# This is a compatability with ancient installs, all modern install have tls port
if dirsrv.sslport is not None:
selinux_label_port(dirsrv.sslport, remove_label=True)
# If this was the last instance, remove the ssca instance
insts = dirsrv.list(all=True)
if len(insts) == 0:
ssca = NssSsl(dbpath=dirsrv.get_ssca_dir())
ssca.remove_db()
### ANY NEW REMOVAL ACTIONS MUST BE ABOVE THIS LINE!!!
# Finally means FINALLY, the last thing, the LAST LAST thing. By doing this absolutely
# last, it means that we can have any failure above, and continue to re-run until resolved
# because this instance marker (dse.ldif) continues to exist!
# Move the config_dir to config_dir.removed
config_dir = dirsrv.ds_paths.config_dir
config_dir_rm = "{}.removed".format(config_dir)
if os.path.exists(config_dir_rm):
_log.debug("Removing previously existed %s" % config_dir_rm)
shutil.rmtree(config_dir_rm)
assert_c(not os.path.exists(config_dir_rm))
# That's it, everything before this MUST have suceeded, so now we can move the
# config dir (containing dse.ldif, the marker) out of the way.
_log.debug("Moving %s to %s" % (config_dir, config_dir_rm))
try:
shutil.move(config_dir, config_dir_rm)
except FileNotFoundError:
pass
# DO NOT PUT ANY CODE BELOW THIS COMMENT BECAUSE THAT WOULD VIOLATE THE ASSERTIONS OF THE
# ABOVE CODE.
# Done!
_log.debug("Complete")
def _remove_ssca_db(topology):
ssca = NssSsl(dbpath=topology[0].get_ssca_dir())
if ssca._db_exists():
return ssca.remove_db()
else:
return True
