1e5ccb4c7d
We have some scripts that we deploy via tripleo that use inline python. For this we need to be able to find an available python on the system in order for it to work. This change adds a lookup function to the scripts to find a working version of python as /usr/bin/python may not exist. Change-Id: Ida7a7cbd064ebdb923f38c9102eb4b0771f9b273 Related-Blueprint: python3-support
120 lines
4.2 KiB
YAML
120 lines
4.2 KiB
YAML
heat_template_version: rocky
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description: >
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Configure os-net-config mappings for specific nodes
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Your environment file needs to look like:
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parameter_defaults:
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NetConfigDataLookup:
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node1:
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nic1: "00:c8:7c:e6:f0:2e"
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node2:
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nic1: "00:18:7d:99:0c:b6"
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node3:
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dmiString: 'system-uuid'
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id: 'A8C85861-1B16-4803-8689-AFC62984F8F6'
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nic1: em3
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# Dell PowerEdge
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nodegroup1:
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dmiString: "system-product-name"
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id: "PowerEdge R630"
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nic1: em3
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nic2: em1
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nic3: em2
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# Cisco UCS B200-M4"
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nodegroup2:
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dmiString: "system-product-name"
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id: "UCSB-B200-M4"
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nic1: enp7s0
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nic2: enp6s0
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This will result in the first node* entry where either:
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a) a mac matches a local device
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or b) a DMI String matches the specified id
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being written as a mapping file for os-net-config in
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/etc/os-net-config/mapping.yaml
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parameters:
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# Note this requires a liberty heat or newer in the undercloud due to
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# the 2015-10-15 (which is required to enable str_replace serializing
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# the json parameter to json, another approch with a string parameter
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# will be required for older heat versions)
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NetConfigDataLookup:
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type: json
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default: {}
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description: per-node configuration map
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resources:
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userdata:
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type: OS::Heat::MultipartMime
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properties:
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parts:
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- config: {get_resource: OsNetConfigMappings}
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OsNetConfigMappings:
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type: OS::Heat::SoftwareConfig
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properties:
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group: ungrouped
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config:
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str_replace:
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template: |
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#!/bin/sh
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eth_addr=$(cat /sys/class/net/*/address | tr '\n' ',')
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mkdir -p /etc/os-net-config
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# needed to handle where python lives
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function get_python() {
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command -v python3 || command -v python2 || command -v python || exit 1
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}
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# Create an os-net-config mapping file, note this defaults to
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# /etc/os-net-config/mapping.yaml, so we use that name despite
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# rendering the result as json
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echo '$node_lookup' | $(get_python) -c "
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import json
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import sys
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import copy
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from subprocess import PIPE, Popen
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import yaml
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def write_mapping_file(interface_mapping):
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with open('/etc/os-net-config/mapping.yaml', 'w') as f:
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yaml.safe_dump(interface_mapping, f, default_flow_style=False)
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# cast to lower case for MAC address match
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eth_addr='$eth_addr'.lower()
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input = sys.stdin.readline() or '{}'
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data = json.loads(input)
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for node in data:
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interface_mapping = {'interface_mapping':
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copy.deepcopy(data[node])}
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if 'dmiString' in interface_mapping['interface_mapping']:
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del interface_mapping['interface_mapping']['dmiString']
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if 'id' in interface_mapping['interface_mapping']:
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del interface_mapping['interface_mapping']['id']
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# Match on mac addresses first - cast all to lower case
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lc_interface_mapping = copy.deepcopy(interface_mapping)
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for key,x in lc_interface_mapping['interface_mapping'].items():
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lc_interface_mapping['interface_mapping'][key] = x.lower()
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if any(x in eth_addr.split(',') for x in lc_interface_mapping['interface_mapping'].values()):
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write_mapping_file(lc_interface_mapping)
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break
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# If data contain dmiString and id keys, try to match node(group)
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if 'dmiString' in data[node] and 'id' in data[node]:
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ps = Popen([ 'dmidecode',
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'--string', data[node].get('dmiString') ],
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stdout=PIPE)
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out, err = ps.communicate()
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if data[node].get('id') == out.rstrip():
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write_mapping_file(lc_interface_mapping)
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break
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"
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params:
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$node_lookup: {get_param: NetConfigDataLookup}
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outputs:
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OS::stack_id:
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value: {get_resource: userdata}
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