Exemple #1
0
def config_restore_remote(infile_name, infile_obj):
    """
    Commandline options:
      * --request-timeout - timeout for HTTP requests
    """
    extracted = {
        "version.txt": "",
        "corosync.conf": "",
    }
    try:
        tarball = tarfile.open(infile_name, "r|*", infile_obj)
        while True:
            # next(tarball) does not work in python2.6
            tar_member_info = tarball.next()
            if tar_member_info is None:
                break
            if tar_member_info.name in extracted:
                tar_member = tarball.extractfile(tar_member_info)
                extracted[tar_member_info.name] = tar_member.read()
                tar_member.close()
        tarball.close()
    except (tarfile.TarError, EnvironmentError) as e:
        utils.err("unable to read the tarball: %s" % e)

    config_backup_check_version(extracted["version.txt"])

    node_list, report_list = get_existing_nodes_names(
        utils.get_corosync_conf_facade(
            conf_text=extracted["corosync.conf"].decode("utf-8")))
    if report_list:
        process_library_reports(report_list)
    if not node_list:
        utils.err("no nodes found in the tarball")

    err_msgs = []
    for node in node_list:
        try:
            retval, output = utils.checkStatus(node)
            if retval != 0:
                err_msgs.append(output)
                continue
            _status = json.loads(output)
            if (_status["corosync"] or _status["pacemaker"] or
                    # not supported by older pcsd, do not fail if not present
                    _status.get("pacemaker_remote", False)):
                err_msgs.append(
                    "Cluster is currently running on node %s. You need to stop "
                    "the cluster in order to restore the configuration." %
                    node)
                continue
        except (ValueError, NameError, LookupError):
            err_msgs.append("unable to determine status of the node %s" % node)
    if err_msgs:
        for msg in err_msgs:
            utils.err(msg, False)
        sys.exit(1)

    # Temporarily disable config files syncing thread in pcsd so it will not
    # rewrite restored files. 10 minutes should be enough time to restore.
    # If node returns HTTP 404 it does not support config syncing at all.
    for node in node_list:
        retval, output = utils.pauseConfigSyncing(node, 10 * 60)
        if not (retval == 0 or "(HTTP error: 404)" in output):
            utils.err(output)

    if infile_obj:
        infile_obj.seek(0)
        tarball_data = infile_obj.read()
    else:
        with open(infile_name, "rb") as tarball:
            tarball_data = tarball.read()

    error_list = []
    for node in node_list:
        retval, error = utils.restoreConfig(node, tarball_data)
        if retval != 0:
            error_list.append(error)
    if error_list:
        utils.err("unable to restore all nodes\n" + "\n".join(error_list))
Exemple #2
0
def config_restore_remote(infile_name, infile_obj):
    extracted = {
        "version.txt": "",
        "corosync.conf": "",
        "cluster.conf": "",
    }
    try:
        tarball = tarfile.open(infile_name, "r|*", infile_obj)
        while True:
            # next(tarball) does not work in python2.6
            tar_member_info = tarball.next()
            if tar_member_info is None:
                break
            if tar_member_info.name in extracted:
                tar_member = tarball.extractfile(tar_member_info)
                extracted[tar_member_info.name] = tar_member.read()
                tar_member.close()
        tarball.close()
    except (tarfile.TarError, EnvironmentError) as e:
        utils.err("unable to read the tarball: %s" % e)

    config_backup_check_version(extracted["version.txt"])

    node_list = utils.getNodesFromCorosyncConf(
        extracted["cluster.conf" if utils.is_rhel6() else "corosync.conf"].decode("utf-8")
    )
    if not node_list:
        utils.err("no nodes found in the tarball")

    err_msgs = []
    for node in node_list:
        try:
            retval, output = utils.checkStatus(node)
            if retval != 0:
                err_msgs.append(output)
                continue
            status = json.loads(output)
            if (
                status["corosync"]
                or
                status["pacemaker"]
                or
                status["cman"]
                or
                # not supported by older pcsd, do not fail if not present
                status.get("pacemaker_remote", False)
            ):
                err_msgs.append(
                    "Cluster is currently running on node %s. You need to stop "
                        "the cluster in order to restore the configuration."
                    % node
                )
                continue
        except (ValueError, NameError, LookupError):
            err_msgs.append("unable to determine status of the node %s" % node)
    if err_msgs:
        for msg in err_msgs:
            utils.err(msg, False)
        sys.exit(1)

    # Temporarily disable config files syncing thread in pcsd so it will not
    # rewrite restored files. 10 minutes should be enough time to restore.
    # If node returns HTTP 404 it does not support config syncing at all.
    for node in node_list:
        retval, output = utils.pauseConfigSyncing(node, 10 * 60)
        if not (retval == 0 or "(HTTP error: 404)" in output):
            utils.err(output)

    if infile_obj:
        infile_obj.seek(0)
        tarball_data = infile_obj.read()
    else:
        with open(infile_name, "rb") as tarball:
            tarball_data = tarball.read()

    error_list = []
    for node in node_list:
        retval, error = utils.restoreConfig(node, tarball_data)
        if retval != 0:
            error_list.append(error)
    if error_list:
        utils.err("unable to restore all nodes\n" + "\n".join(error_list))