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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# (c) Copyright IBM Corp. 2020 All Rights Reserved # # Author: Aman Kumar Sinha # # This file is part of cloud-init. See LICENSE file for license information. """Reset RMC: Reset rsct node id""" import os from logging import Logger from cloudinit import log as logging from cloudinit import subp, util from cloudinit.cloud import Cloud from cloudinit.config import Config from cloudinit.config.schema import MetaSchema from cloudinit.distros import ALL_DISTROS from cloudinit.settings import PER_INSTANCE MODULE_DESCRIPTION = """\ 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. """ meta: MetaSchema = { "id": "cc_reset_rmc", "name": "Reset RMC", "title": "reset rsct node id", "description": MODULE_DESCRIPTION, "distros": [ALL_DISTROS], "frequency": PER_INSTANCE, "examples": [], "activate_by_schema_keys": [], } # This module is undocumented in our schema docs __doc__ = "" # 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: str, cfg: Config, cloud: Cloud, log: Logger, args: list ) -> None: # 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)