PagesNetwork Bonding Configuration With Foreman
This post is mostly a note to self. The snippets are kindly provided by user schewara who posted them to #theforeman IRC channel. Many thanks for sharing these snippets, they have saved me a lot of time, and hopefully will be usefull for other people as well!
What I was trying to achieve is multi-NIC with bonding configuration in Foreman/Puppet.
One way is to leave this configuration entirelly to Puppet. Another way is to configure the interfaces at the kicstart phase, which is a safer option.
So the snippets are below, verbatim, I will update the post if/when I change them.
Foreman kicstart bit (post install section):
..
..
SYSTEM_INFO=$(dmidecode -s system-manufacturer)
if [[ "$SYSTEM_INFO" == "HP" ]]; then
# remove ifcfg Files and udev rules if exist
rm -f /etc/sysconfig/network-scripts/ifcfg-eth*
rm -f /etc/udev/rules.d/70-persistent-net.rules
wget -P /etc/yum.repos.d -nc -nd -q http://yum.repo.somewhere/repofiles/3rdParty-hp-spp.repo
yum install -y -e 0 hpsmh hp-smh-templates hp-health hp-snmp-agents hpdiags hponcfg hpacucli cpqacuxe glibc.i686
modprobe hpilo
# Generate ILO
cat > /tmp/ilo-parser.py << EOF
<%= snippet("ILO-IFace-Parser") %>
EOF
<%= @osver <= 5 ? "python26" : "python" -%> /tmp/ilo-parser.py
# CLEAR the IML Log
hpasmcli -s "clear iml"
elif [[ "$SYSTEM_INFO" =~ "VMware" ]]; then
..
..
Snippet that handles bonding configuration (“ILO-IFacw-Parser”):
#!/usr/bin/env python
# WARNING: Doesn't work with python3
from xml.etree.ElementTree import parse
import sys
import re
import subprocess
import glob
def parse_ilo_interfaces(filename):
#===============================================================================
# Interfaces XML Snipped
# ...
# <SMBIOS_RECORD B64_DATA="0RQA0QADACJkmKx6AAUAImSYrHgAAA==" TYPE="209">
# <FIELD NAME="Subject" VALUE="Embedded NIC MAC Assignment" />
# <FIELD NAME="Port" VALUE="1" />
# <FIELD NAME="MAC" VALUE="00-22-64-98-AC-7A" />
# <FIELD NAME="Port" VALUE="2" />
# <FIELD NAME="MAC" VALUE="00-22-64-98-AC-78" />
# <FIELD NAME="Port" VALUE="iLO" />
# <FIELD NAME="MAC" VALUE="00-22-64-97-87-8A" />
# </SMBIOS_RECORD>
# ...
#===============================================================================
ifaces = {}
port = ""
tree = parse(filename)
for arecord in tree.findall("SMBIOS_RECORD"):
if arecord.attrib["TYPE"] == "209":
childs = arecord.getchildren()
for ch in childs:
if ch.attrib["NAME"] == "Port":
port = ch.attrib["VALUE"]
if ch.attrib["NAME"] == "MAC":
ifaces[port] = ch.attrib["VALUE"]
# remove iLo entry from the dict
del ifaces["iLO"]
#print(ifaces)
# fix index number and mac formatting
macp = re.compile('-')
for id, mac in ifaces.items():
ifaces[int(id) - 1] = macp.sub(':', mac).upper()
del ifaces[id]
#print(ifaces)
#print
return ifaces
def gen_config_params(type, ifacenr="0", ifacemac="", ip="", nm="", gw=""):
# TODO REFACTOR
if type == "eth":
cfg_settings = {
"DEVICE": type + ifacenr,
"HWADDR": ifacemac,
"ONBOOT": "yes",
"BOOTPROTO": "none",
"USERCTL": "no",
"NM_CONTROLLED": "no",
"SLAVE": "yes",
"MASTER": "bond0"
}
elif type == "bond":
cfg_settings = {
"DEVICE": type + ifacenr,
"ONBOOT": "yes",
"BOOTPROTO": "none",
"USERCTL": "no",
"NM_CONTROLLED": "no",
"BONDING_OPTS": "miimon=100 mode=1",
"IPADDR": ip,
"NETMASK": nm,
"GATEWAY": gw
}
return cfg_settings
def write_cfgfile(path, ifacelist):
# Write the file new
for ifaces in ifacelist:
print("writing: ifcfg-" + ifaces["DEVICE"])
with open(path + "ifcfg-" + ifaces["DEVICE"], 'w') as f:
for key, value in ifaces.items():
f.write(key + '="' + value + '"\n')
def get_ilo_hostinfo(ilooutfile):
xmlrequest="""<RIBCL version="2.21">
<LOGIN USER_LOGIN="adminname" PASSWORD="password">
<SERVER_INFO MODE="READ" >
<GET_HOST_DATA />
</SERVER_INFO>
</LOGIN>
</RIBCL>"""
subprocess.Popen(["hponcfg", "-i", "-l", ilooutfile], stdin=subprocess.PIPE, stdout=subprocess.PIPE).communicate(xmlrequest)
def parse_udev_interfaces():
sys_files = glob.glob('/sys/class/net/eth*/address')
maclist = []
for infile in sys_files:
with open(infile, 'r') as f:
maclist.append(f.read().rstrip().upper())
for mac in sorted(maclist):
if mac not in ifacedict.values():
ifacedict[len(ifacedict)] = mac
if __name__ == '__main__':
# TODO: call hponcfg and generate XML-File or parse XML Output directly
path = "/etc/sysconfig/network-scripts/"
ilooutfile = "/tmp/iloout.xml"
ifacedict = {}
ifacelist = []
# supplied by Foreman
ipaddr = '<%= @host.ip -%>'
netmask = '<%= @host.params["netmask"] -%>'
gateway = '<%= @host.params["gateway"] -%>'
# testing
#ipaddr = '192.168.0.10'
#netmask = '255.255.255.0'
#gateway = '192.168.0.254'
get_ilo_hostinfo(ilooutfile)
ifacedict = parse_ilo_interfaces(ilooutfile)
parse_udev_interfaces()
# Bonding Interface
cfg_params = gen_config_params("bond", "0", ip=ipaddr, nm=netmask, gw=gateway)
ifacelist.append(cfg_params)
# Ethernet Interfaces
for nr, mac in ifacedict.items():
cfg_params = gen_config_params("eth", str(nr), mac)
if len(ifacedict) == 4 and nr % 2:
del cfg_params["SLAVE"]
del cfg_params["MASTER"]
cfg_params["ONBOOT"] = "no"
ifacelist.append(cfg_params)
write_cfgfile(path, ifacelist)
As a side note, the HP SPP packages are available on HP site.