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10/02/2024 07:52:55 PM
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__init__.py
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__pycache__
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cc_apk_configure.py
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cc_apt_configure.py
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cc_apt_pipelining.py
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cc_bootcmd.py
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cc_byobu.py
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cc_ca_certs.py
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cc_chef.py
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cc_debug.py
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cc_disable_ec2_metadata.py
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cc_disk_setup.py
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cc_emit_upstart.py
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cc_fan.py
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cc_final_message.py
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cc_foo.py
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cc_growpart.py
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cc_grub_dpkg.py
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cc_keys_to_console.py
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cc_landscape.py
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cc_locale.py
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cc_lxd.py
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cc_mcollective.py
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cc_migrator.py
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cc_mounts.py
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cc_ntp.py
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cc_package_update_upgrade_install.py
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cc_phone_home.py
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cc_power_state_change.py
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cc_puppet.py
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cc_refresh_rmc_and_interface.py
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cc_reset_rmc.py
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cc_resizefs.py
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cc_resolv_conf.py
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cc_rh_subscription.py
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cc_rightscale_userdata.py
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cc_rsyslog.py
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cc_runcmd.py
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cc_salt_minion.py
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cc_scripts_per_boot.py
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cc_scripts_per_instance.py
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cc_scripts_per_once.py
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cc_scripts_user.py
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cc_scripts_vendor.py
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cc_seed_random.py
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cc_set_hostname.py
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cc_set_passwords.py
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cc_snap.py
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cc_spacewalk.py
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cc_ssh.py
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cc_ssh_authkey_fingerprints.py
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cc_ssh_import_id.py
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cc_timezone.py
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cc_ubuntu_advantage.py
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cc_ubuntu_drivers.py
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cc_update_etc_hosts.py
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cc_update_hostname.py
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cc_users_groups.py
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cc_write_files.py
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cc_yum_add_repo.py
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cc_zypper_add_repo.py
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schema.py
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Editing: cc_reset_rmc.py
Close
# (c) Copyright IBM Corp. 2020 All Rights Reserved # # Author: Aman Kumar Sinha <amansi26@in.ibm.com> # # This file is part of cloud-init. See LICENSE file for license information. """ Reset RMC ------------ **Summary:** reset rsct node id Reset RMC module is IBM PowerVM Hypervisor specific Reliable Scalable Cluster Technology (RSCT) is a set of software components, that together provide a comprehensive clustering environment (RAS features) for IBM PowerVM based virtual machines. RSCT includes the Resource monitoring and control (RMC) subsystem. RMC is a generalized framework used for managing, monitoring, and manipulating resources. RMC runs as a daemon process on individual machines and needs creation of unique node id and restarts during VM boot. More details refer https://www.ibm.com/support/knowledgecenter/en/SGVKBA_3.2/admin/bl503_ovrv.htm This module handles - creation of the unique RSCT node id to every instance/virtual machine and ensure once set, it isn't changed subsequently by cloud-init. In order to do so, it restarts RSCT service. Prerequisite of using this module is to install RSCT packages. **Internal name:** ``cc_reset_rmc`` **Module frequency:** per instance **Supported distros:** rhel, sles and ubuntu """ import os from cloudinit import log as logging from cloudinit.settings import PER_INSTANCE from cloudinit import util from cloudinit import subp frequency = PER_INSTANCE # RMCCTRL is expected to be in system PATH (/opt/rsct/bin) # The symlink for RMCCTRL and RECFGCT are # /usr/sbin/rsct/bin/rmcctrl and # /usr/sbin/rsct/install/bin/recfgct respectively. RSCT_PATH = '/opt/rsct/install/bin' RMCCTRL = 'rmcctrl' RECFGCT = 'recfgct' LOG = logging.getLogger(__name__) NODE_ID_FILE = '/etc/ct_node_id' def handle(name, _cfg, cloud, _log, _args): # Ensuring node id has to be generated only once during first boot if cloud.datasource.platform_type == 'none': LOG.debug('Skipping creation of new ct_node_id node') return if not os.path.isdir(RSCT_PATH): LOG.debug("module disabled, RSCT_PATH not present") return orig_path = os.environ.get('PATH') try: add_path(orig_path) reset_rmc() finally: if orig_path: os.environ['PATH'] = orig_path else: del os.environ['PATH'] def reconfigure_rsct_subsystems(): # Reconfigure the RSCT subsystems, which includes removing all RSCT data # under the /var/ct directory, generating a new node ID, and making it # appear as if the RSCT components were just installed try: out = subp.subp([RECFGCT])[0] LOG.debug(out.strip()) return out except subp.ProcessExecutionError: util.logexc(LOG, 'Failed to reconfigure the RSCT subsystems.') raise def get_node_id(): try: fp = util.load_file(NODE_ID_FILE) node_id = fp.split('\n')[0] return node_id except Exception: util.logexc(LOG, 'Failed to get node ID from file %s.' % NODE_ID_FILE) raise def add_path(orig_path): # Adding the RSCT_PATH to env standard path # So thet cloud init automatically find and # run RECFGCT to create new node_id. suff = ":" + orig_path if orig_path else "" os.environ['PATH'] = RSCT_PATH + suff return os.environ['PATH'] def rmcctrl(): # Stop the RMC subsystem and all resource managers so that we can make # some changes to it try: return subp.subp([RMCCTRL, '-z']) except Exception: util.logexc(LOG, 'Failed to stop the RMC subsystem.') raise def reset_rmc(): LOG.debug('Attempting to reset RMC.') node_id_before = get_node_id() LOG.debug('Node ID at beginning of module: %s', node_id_before) # Stop the RMC subsystem and all resource managers so that we can make # some changes to it rmcctrl() reconfigure_rsct_subsystems() node_id_after = get_node_id() LOG.debug('Node ID at end of module: %s', node_id_after) # Check if new node ID is generated or not # by comparing old and new node ID if node_id_after == node_id_before: msg = 'New node ID did not get generated.' LOG.error(msg) raise Exception(msg)