Gecko [ paroquia-rio-de-mouro.pt ]

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__pycache__	[ DIR ]	drwxr-xr-x	2021-12-04 13:17
__init__.py	1.4 KB	-rw-r--r--	2021-03-19 15:37
cc_apk_configure.py	9.35 KB	-rw-r--r--	2021-03-19 15:37
cc_apt_configure.py	39.92 KB	-rw-r--r--	2021-03-19 15:37
cc_apt_pipelining.py	2.44 KB	-rw-r--r--	2021-03-19 15:37
cc_bootcmd.py	3.53 KB	-rw-r--r--	2021-03-19 15:37
cc_byobu.py	3.13 KB	-rw-r--r--	2021-03-19 15:37
cc_ca_certs.py	6.37 KB	-rw-r--r--	2021-03-19 15:37
cc_chef.py	23.6 KB	-rw-r--r--	2021-03-19 15:37
cc_debug.py	3.08 KB	-rw-r--r--	2021-03-19 15:37
cc_disable_ec2_metadata.py	1.59 KB	-rw-r--r--	2021-03-19 15:37
cc_disk_setup.py	33.08 KB	-rw-r--r--	2021-03-19 15:37
cc_emit_upstart.py	2 KB	-rw-r--r--	2021-03-19 15:37
cc_fan.py	2.85 KB	-rw-r--r--	2021-03-19 15:37
cc_final_message.py	2.37 KB	-rw-r--r--	2021-03-19 15:37
cc_foo.py	2.07 KB	-rw-r--r--	2021-03-19 15:37
cc_growpart.py	11.63 KB	-rw-r--r--	2021-03-19 15:37
cc_grub_dpkg.py	4.94 KB	-rw-r--r--	2021-03-19 15:37
cc_keys_to_console.py	2.79 KB	-rw-r--r--	2021-03-19 15:37
cc_landscape.py	3.96 KB	-rw-r--r--	2021-03-19 15:37
cc_locale.py	2.22 KB	-rw-r--r--	2021-03-19 15:37
cc_lxd.py	10.51 KB	-rw-r--r--	2021-03-19 15:37
cc_mcollective.py	5.08 KB	-rw-r--r--	2021-03-19 15:37
cc_migrator.py	3.07 KB	-rw-r--r--	2021-03-19 15:37
cc_mounts.py	17.75 KB	-rw-r--r--	2021-03-19 15:37
cc_ntp.py	21.59 KB	-rw-r--r--	2021-03-19 15:37
cc_package_update_upgrade_install.py	4.14 KB	-rw-r--r--	2021-03-19 15:37
cc_phone_home.py	4.03 KB	-rw-r--r--	2021-03-19 15:37
cc_power_state_change.py	7.48 KB	-rw-r--r--	2021-03-19 15:37
cc_puppet.py	8.86 KB	-rw-r--r--	2021-03-19 15:37
cc_refresh_rmc_and_interface.py	5.07 KB	-rw-r--r--	2021-03-19 15:37
cc_reset_rmc.py	4.15 KB	-rw-r--r--	2021-03-19 15:37
cc_resizefs.py	9.73 KB	-rw-r--r--	2021-03-19 15:37
cc_resolv_conf.py	3.45 KB	-rw-r--r--	2021-03-19 15:37
cc_rh_subscription.py	15.68 KB	-rw-r--r--	2021-03-19 15:37
cc_rightscale_userdata.py	3.75 KB	-rw-r--r--	2021-03-19 15:37
cc_rsyslog.py	14.12 KB	-rw-r--r--	2021-03-19 15:37
cc_runcmd.py	3.11 KB	-rw-r--r--	2021-03-19 15:37
cc_salt_minion.py	4.75 KB	-rw-r--r--	2021-03-19 15:37
cc_scripts_per_boot.py	1.2 KB	-rw-r--r--	2021-03-19 15:37
cc_scripts_per_instance.py	1.38 KB	-rw-r--r--	2021-03-19 15:37
cc_scripts_per_once.py	1.31 KB	-rw-r--r--	2021-03-19 15:37
cc_scripts_user.py	1.42 KB	-rw-r--r--	2021-03-19 15:37
cc_scripts_vendor.py	1.41 KB	-rw-r--r--	2021-03-19 15:37
cc_seed_random.py	4.57 KB	-rw-r--r--	2021-03-19 15:37
cc_set_hostname.py	3.39 KB	-rw-r--r--	2021-03-19 15:37
cc_set_passwords.py	8.53 KB	-rw-r--r--	2021-03-19 15:37
cc_snap.py	8.68 KB	-rw-r--r--	2021-03-19 15:37
cc_spacewalk.py	2.89 KB	-rw-r--r--	2021-03-19 15:37
cc_ssh.py	12.76 KB	-rw-r--r--	2021-03-19 15:37
cc_ssh_authkey_fingerprints.py	3.44 KB	-rw-r--r--	2021-03-19 15:37
cc_ssh_import_id.py	2.91 KB	-rw-r--r--	2021-03-19 15:37
cc_timezone.py	1.15 KB	-rw-r--r--	2021-03-19 15:37
cc_ubuntu_advantage.py	6.08 KB	-rw-r--r--	2021-04-21 00:05
cc_ubuntu_drivers.py	5.69 KB	-rw-r--r--	2021-03-19 15:37
cc_update_etc_hosts.py	3.33 KB	-rw-r--r--	2021-03-19 15:37
cc_update_hostname.py	1.58 KB	-rw-r--r--	2021-03-19 15:37
cc_users_groups.py	7.44 KB	-rw-r--r--	2021-03-19 15:37
cc_write_files.py	8.83 KB	-rw-r--r--	2021-03-19 15:37
cc_yum_add_repo.py	4.21 KB	-rw-r--r--	2021-03-19 15:37
cc_zypper_add_repo.py	7.58 KB	-rw-r--r--	2021-03-19 15:37
schema.py	19.05 KB	-rw-r--r--	2021-03-19 15:37

Rename

# (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.

"""
Refresh IPv6 interface and RMC
------------------------------
**Summary:** Ensure Network Manager is not managing IPv6 interface

This 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
- Refreshing RMC
- Disabling NetworkManager from handling IPv6 interface, as IPv6 interface
  is used for communication between RMC daemon and PowerVM hypervisor.

**Internal name:** ``cc_refresh_rmc_and_interface``

**Module frequency:** per always

**Supported distros:** RHEL

"""

from cloudinit import log as logging
from cloudinit.settings import PER_ALWAYS
from cloudinit import util
from cloudinit import subp
from cloudinit import netinfo

import errno

frequency = PER_ALWAYS

LOG = logging.getLogger(__name__)
# Ensure that /opt/rsct/bin has been added to standard PATH of the
# distro. The symlink to rmcctrl is /usr/sbin/rsct/bin/rmcctrl .
RMCCTRL = 'rmcctrl'

def handle(name, _cfg, _cloud, _log, _args):
    if not subp.which(RMCCTRL):
        LOG.debug("No '%s' in path, disabled", RMCCTRL)
        return

LOG.debug(
        'Making the IPv6 up explicitly. '
        'Ensuring IPv6 interface is not being handled by NetworkManager '
        'and it is  restarted to re-establish the communication with '
        'the hypervisor')

ifaces = find_ipv6_ifaces()

# Setting NM_CONTROLLED=no for IPv6 interface
    # making it down and up

if len(ifaces) == 0:
        LOG.debug("Did not find any interfaces with ipv6 addresses.")
    else:
        for iface in ifaces:
            refresh_ipv6(iface)
            disable_ipv6(sysconfig_path(iface))
        restart_network_manager()

def find_ipv6_ifaces():
    info = netinfo.netdev_info()
    ifaces = []
    for iface, data in info.items():
        if iface == "lo":
            LOG.debug('Skipping localhost interface')
        if len(data.get("ipv4", [])) != 0:
            # skip this interface, as it has ipv4 addrs
            continue
        ifaces.append(iface)
    return ifaces

def refresh_ipv6(interface):
    # IPv6 interface is explicitly brought up, subsequent to which the
    # RMC services are restarted to re-establish the communication with
    # the hypervisor.
    subp.subp(['ip', 'link', 'set', interface, 'down'])
    subp.subp(['ip', 'link', 'set', interface, 'up'])

def sysconfig_path(iface):
    return '/etc/sysconfig/network-scripts/ifcfg-' + iface

def restart_network_manager():
    subp.subp(['systemctl', 'restart', 'NetworkManager'])

def disable_ipv6(iface_file):
    # Ensuring that the communication b/w the hypervisor and VM is not
    # interrupted due to NetworkManager. For this purpose, as part of
    # this function, the NM_CONTROLLED is explicitly set to No for IPV6
    # interface and NetworkManager is restarted.
    try:
        contents = util.load_file(iface_file)
    except IOError as e:
        if e.errno == errno.ENOENT:
            LOG.debug("IPv6 interface file %s does not exist\n",
                      iface_file)
        else:
            raise e

if 'IPV6INIT' not in contents:
        LOG.debug("Interface file %s did not have IPV6INIT", iface_file)
        return

LOG.debug("Editing interface file %s ", iface_file)

# Dropping any NM_CONTROLLED or IPV6 lines from IPv6 interface file.
    lines = contents.splitlines()
    lines = [line for line in lines if not search(line)]
    lines.append("NM_CONTROLLED=no")

with open(iface_file, "w") as fp:
        fp.write("\n".join(lines) + "\n")

def search(contents):
    # Search for any NM_CONTROLLED or IPV6 lines in IPv6 interface file.
    return(
        contents.startswith("IPV6ADDR") or
        contents.startswith("IPADDR6") or
        contents.startswith("IPV6INIT") or
        contents.startswith("NM_CONTROLLED"))

def refresh_rmc():
    # To make a healthy connection between RMC daemon and hypervisor we
    # refresh RMC. With refreshing RMC we are ensuring that making IPv6
    # down and up shouldn't impact communication between RMC daemon and
    # hypervisor.
    # -z : stop Resource Monitoring & Control subsystem and all resource
    # managers, but the command does not return control to the user
    # until the subsystem and all resource managers are stopped.
    # -s : start Resource Monitoring & Control subsystem.
    try:
        subp.subp([RMCCTRL, '-z'])
        subp.subp([RMCCTRL, '-s'])
    except Exception:
        util.logexc(LOG, 'Failed to refresh the RMC subsystem.')
        raise