Control Update
Focus on PlanetLab integration and booting
Fred Kuhns
fredk@arl.wustl.edu
Applied Research Laboratory
Washington University in St. Louis
fredk@arl.wustl.edu
Washington
WASHINGTON UNIVERSITY IN ST LOUIS
Documents
• Control documentation
http://www.arl.wustl.edu/projects/techX/ppt/
– This presentation
• http://www.arl.wustl.edu/projects/techX/ppt/ControlUpdate.ppt
– SRM interface
• http://www.arl.wustl.edu/projects/techX/ppt/srm.ppt
– RMP interface
• http://www.arl.wustl.edu/projects/techX/ppt/rmp.ppt
– SCD interface (ingress, egress and npe)
• http://www.arl.wustl.edu/projects/techX/ppt/scd.ppt
• Datapath documentation
http://www.arl.wustl.edu/projects/techX/design/SPP/
– NAT overview (Interface??)
• http://www.arl.wustl.edu/projects/techX/design/SPP/SPP_V1_NAT_design.ppt
– FlowStats (Interface??)
• http://www.arl.wustl.edu/projects/techX/design/SPP/FlowStats_Control.ppt
Fred Kuhns - 3/24/2016
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2
Traditional View of a PlanetLab Node
•
•
Linux OS, vserver
System services
–
–
–
–
•
Planetlab node:
site, owner, model, ssh_host_key, groups
Host = XXX, Domain = YYY
IPAddress = A.B.C.D
pl_netflow
sirius: brokerage service
stork: environmental service
CoMon: monitoring and discovery
Resource model
Node
System
Manager Services
(“root” VM) (VMs)
– focused on PCs with single device
instances (CPU, NIC)
– standard Linux/UNIX tools to
measure utilization
– homogeneous environment with
single vmm to manage all vm
instances on a platform
– local node manager interface
through loopback interface
•
...
VMN
Virtual Machine Monitor (VMM)
Hardware Platform (General Purpose PC)
User requests slice on a set of
distributed nodes
Disk
– assigned VM instance on each node
– Fedora Linux environment
– per slice flowstats
Fred Kuhns - 3/24/2016
VM1
DRAM
CPU
NIC
host.domain
A.B.C.D
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Internet
3
An SPP Node
SPP/PlanetLab node:
site, owner, model
ssh_host_key, groups
Host = XXX
Domain = YYY
IPAddress = A.B.C.D
GPE1
GPE2
*Node *System
Manager Services
VM1
...
VMX-1
Virtual Machine Monitor (VMM)
Hardware Platform (General Purpose PC)
NICNIC
NIC
Disk DRAM CPU
CPU
CP
control
*Node *System
Manager Services
VMX
VMN
...
Virtual Machine Monitor (VMM)
Hardware Platform (General Purpose PC)
NICNIC
NIC
Disk DRAM CPU
CPU
data
data
control
HUB: 1GbE Control (Base); 10GbE Data (fabric)
data
data
NPE
Line Card
NAT
*Node *System
Manager Services
FwdDB/Filters
datapath
External Interface
spp_host.domain
A.B.C.D
Fred Kuhns - 3/24/2016
data
NPE
vmX-1:fast path1
vm1:fast path1
vmY:fast path2
vm1:fast path2
vmN:fast path1
vmX:fast path1
...
...
Internet
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4
Challenges
• Provide the standard PlanetLab slice environment
– configure and boot individual GPEs with standard planetlab
software and supporting the standard operational
environment
• Support standard interfaces
– boot manager
– node managers internal and external interfaces
– resource monitoring
• Create interface for allocating and managing fast-paths
– allocate/free NPE resources
– manage meta-interface mappings to externally visible IP
address and UDP port
– slice control of allocated fastpath resources
Fred Kuhns - 3/24/2016
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5
SPP Node
External Interfaces
IP
IP
... IP
1
2
RTM
PCI
SPI
PCI
interfaces
ntp
xscale
SPI
Fabric Ethernet Switch (10Gbps, data path)
Base Ethernet Switch (1Gbps, control)
Hub
FlowStats
xmlrpc
PLCAPI
proxy
System Resource Manager (SRM)
and node manager (GNM)
httpd
SLM
sliceDB
boot files
ingress
SCD
xscale
vnet
CP
PXE,
dhcpd
tftp
ntp
ntp
xscale
egress
SCD
NATD
NPU-B
xscale
NPU-B
ntp
TCAM
RMP
LC
TCAM
NMP
ingress
NPE
SCD
GPE
user slivers
GPE
10x1G/1x10G
NPU-A
NPE
pl_netflow
NPE
NPU-A
Boot Files:
dhcpd.conf
ethers
tftpboot:
bootcd.img
overlay_gpeX.img
pxelinux.0
pxelinux.cfg
C0A82031
C0A82041
overlay.img:
plnode.txt
plc_config
ethers
spp_conf.txt
spp_netinit.py
server*, certs
N
Resource DB
Slice DB
node DB
Fred Kuhns - 3/24/2016
nodeconf.xml
flowDB
sshd*
user info/
home dirs
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I2C
(IPMI)
/var/www/
ntpd
Shelf manager
6
Software Components
•
Control Processor (CP):
–
Boot and Configuration Control (BCC): Node configuration, management and local state management (DB)
•
•
•
–
System Resource Manager (SRM): Centralized resource management
•
•
–
–
–
–
–
•
System Node Manager (SNM, aka GNM): “top-half” of the PlanetLab node manager
Slice login manager (SLM) and ssh forwarding (modified sshd) -- Ritun
Flow Statistics (FS): aggregates pl_netflow data and translates NAT records
Set default (static) routes in line card
What about dynamic route management (BGP/OSPF/RIP)? For now assume single next hop router for all routes.
Local Boot Manager (LBM): Modified PlanetLab BootManager running on the GPEs
Resource Manager Proxy (RMP)
Node Manager Proxy (NMP), lower-half of PlanetLab’s node manage
Network Processor Element (NPE)
–
Substrate Control Daemon (SCD):
•
–
–
•
manages all NPE resources and provides mappings form slice to global name spaces
Kernel module to read/write memory locations (wumod)
Command interpreter for configuring NPU memory (wucmd)
Line Card, Ingress
–
Substrate Control Daemon (scd_ingress)
•
•
•
–
•
responsible for all resource allocation decisions and maintaining dynamic system state
delegates local operations to individual board-level managers
General purpose Processing Element (GPE)
–
–
–
•
httpd, dhcpd, tftp and PXE server for GPE and NPE boards; maintain config files
Boot CD and distribution file management (overlay images, RPM and tar files) for GPEs and CP
PLCAPI proxy (plc_api) and system level BootManager (part of gnm)
implements interface to srm
manage tcam access for ingress and egress
reads/writes scratch rings for NATD
Network Address Translation daemon (NATD), port only
Line Card Egress:
–
Substrate Control Daemon (scd_egress)
•
•
implements interface to srm
reads/writes scratch rings and communicates with the FS and NATD.
Fred Kuhns - 3/24/2016
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7
Boot and Configuration Control
•
Read node configuration DB: currently this is an xml file
– Allocate IP subnets and addresses for all boards
– Assign external IP addresses to GPE fabric interfaces with default VLAN id
– Create per GPE configuration DB: currently this is written to files.
•
Create dhcp configuration file and start dhcpd, httpd and system sshd
– assigns control IP subnets and addresses; assigns internal substrate IP subnet on fabric
Ethernet
•
Start PLCAPI proxy (plc_api) server and system node manager
– read node DB for initialization data: currently use static configuration data and/or re-read
xml file
– Create GPE overlay images: currently this is done manually
– Currently the SNM is split between the plc_api server and srm due to not having a DB and
not wanting to implement transaction-like interface for the snm.
– begin periodic slice updates and gpe assignments, maintain DB
•
Start SRM and bring up boards as they “report in”
– Initialize Line Card to forward “default” (i.e. ssh and icmp) to CP
– Initialize Hub: base and fabric switches; Initialize any switches not within the chassis
•
Start SLM and the ssh daemon
– Remove the SLM configuration file for slices, may contain old mappings
Fred Kuhns - 3/24/2016
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8
Booting SPP1: Example Configuration
Line Card (Slot 6)
Ingress XScale
scd
the ARL network
drn05.arl.wustl.edu
128.252.153.209
vlan 2
lc_b1a = 192.168.32.97/20
eth2.2
128.252.153.31
eth0:0
128.252.153.31
eth0
lc1_data = 171.16.1.6/26
...
Egress XScale
eth0
128.252.153.78
natd
b1a
CP
/tftpboot/
ramdisk.gz
fs zImage.ppm10
httpd
bootcd.img
overlay_gpe1.img
gnm*
/var/www/html/boot/
overlay_gpe2.img
index.html
plc_api pxelinux.0
bootmanager.sh
pxelinux.cfg/
bootstrapfs-planetlab-i386.tar.bz2
C0A82031
C0A82041
eth2 cp_ctrl
b1
/etc/
dhcpd.conf
ethers
f1/0
eth0
srm
eth0 cp_data = 171.16.1.1/26
b1b
GPE1 (Slot 4)
eth1:0
192.168.32.2
b1
IP Routing
proxy arp for drn05
myPLC
drn06.arl.wustl.edu
Ebony
f1/0
NPE (Slot 5)
XScale A
f1/1
scd
lc_b1a = 192.168.32.81/20
eth0
lc1_data = 171.16.1.5/26
...
XScale B
b1a
f1/0
b1
f1/0
eth0
b1b
f1/1
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rmp
b2
f2/0
f2/1
nm
eth2 gpe1_ctrl = 192.168.32.65/20
noarp
vlan 2 eth0.2 dnr05.arl.wustl.edu
eth0 gbe1_data = 171.16.1.3/26
eth1 gpe1_int = 172.16.1.65/26
GPE2 (Slot 3)
scd
lc_b1b = 192.168.32.82/20
dhcpd
192.168.32.1/20
noarp
vlan 2 eth0.2 dnr05.arl.wustl.edu
f1/0
scd
lc_b1b = 192.168.32.98/20
192.168.32.17
Hub
rmp
b2
f2/0
f2/1
nm
eth2 gpe2_ctrl = 192.168.32.49/20
noarp
vlan 2 eth0.2 dnr05.arl.wustl.edu
eth0 gbe2_data = 171.16.1.4/26
eth1 gpe2_int = 172.16.1.66/26
9
Example Configuration, SPP3
Line Card (Slot 6)
Ingress XScale
scd
the ARL network
myPLC
drn06.arl.wustl.edu
spp3.arl.wustl.edu
128.252.153.3
vlan 2
lc_b1a = 192.168.0.97/20
eth2.2
128.252.153.39
eth0
lc1_data = 171.16.1.6/26
...
Egress XScale
eth0
128.252.153.34
natd
b1a
/tftpboot/
ramdisk.gz
fs zImage.ppm10
httpd
bootcd.img
overlay_gpe1.img
gnm*
/var/www/html/boot/
overlay_gpe2.img
index.html
plc_api pxelinux.0
bootmanager.sh
pxelinux.cfg/
bootstrapfs-planetlab-i386.tar.bz2
C0A82031
C0A82041
eth2 cp_ctrl
b1
/etc/
dhcpd.conf
ethers
eth0
srm
eth0 cp_data = 171.16.1.1/26
b1b
GPE1 (Slot 3)
eth1:0
b1
192.168.0.2
f1/0
NPE (Slot 5)
XScale A
f1/1
scd
cp5.arl.wustl.edu
lc_b1a = 192.168.0.81/20
eth0
lc1_data = 171.16.1.5/26
...
XScale B
b1a
f1/0
b1
f1/0
eth0
b1b
f1/1
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rmp
b2
f2/0
f2/1
nm
eth2 gpe1_ctrl = 192.168.0.49/20
noarp
vlan 2 eth0.2 spp3.arl.wustl.edu
eth0 gbe1_data = 171.16.1.3/26
eth1 gpe1_int = 172.16.1.65/26
GPE2 (Slot 4)
scd
lc_b1b = 192.168.0.82/20
dhcpd
192.168.0.1/20
noarp
vlan 2 eth0.2 spp3.arl.wustl.edu
f1/0
eth0:0
128.252.153.39
IP Routing
proxy arp for drn05
CP
f1/0
scd
lc_b1b = 192.168.0.98/20
192.168.0.17
Hub
rmp
b2
f2/0
f2/1
nm
eth2 gpe2_ctrl = 192.168.0.65/20
noarp
vlan 2 eth0.2 spp3.arl.wustl.edu
eth0 gbe2_data = 171.16.1.4/26
eth1 gpe2_int = 172.16.1.66/26
10
bootcd file system
/
bin/
dev/
home/
lib/
...
etc/
init.d/
pl_boot pl_netinit pl_validateconf pl_sysinit pl_hwinit
...
...
root/
selinux/
sys/
usr/
• pl_boot: modified to not use ssl or pgp to retrieve BootManager script from the cp
• pl_netinit: sets boot_server to reference the cp
• pl_validateconf: added SPP specific variables
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11
overlay image
/
etc/{issue, passwd}
kargs.txt
pl_version
usr/
isolinux
boot/
spp_netinit.py ethers spp_conf.txt
boot_server boot_server_port boot_server_path
plnode.txt cacert.pem plc_config pubring.gpg
backup/
boot_server boot_server_path boot_server_port cacert.pem
pubring.gpg
bootme/
BOOTPORT BOOTSERVER BOOTSERVER_IP ID
cacert/drn06.arl.wustl.edu/cacert.pem
• Changed to list cp as boot server and port as 81
• Added SPP initialization script and config files
• Changed plnode.txt to list this GPEs mac address for control interface
Fred Kuhns - 3/24/2016
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12
GPE Configuration file: spp_conf.txt
# Config name: spp1.txt
[ nserv ]
ctrl_ipaddr=192.168.32.1
ctrl_hwaddr=00:1E:C9:FE:76:22
data_ipaddr=172.16.1.1
data_hwaddr=00:1E:C9:FE:76:23
[ domain ]
hostname=drn05
domain=arl.wustl.edu
dns1=128.252.133.45
dns2=128.252.120.1
gateway=128.252.153.31
[ hosts ]
nserv_f1.0=172.16.1.1
nserv=192.168.32.1
nserv_gbl=192.168.48.1
shmgr=192.168.48.2
hub=192.168.32.17
hub1_f1.0=172.16.1.2
hub1_m.0=192.168.48.17
gpe1_f1.0=172.16.1.3
gpe1_f1.1=172.16.1.65
gpe1_b1.0=192.168.32.65
gpe2_f1.0=172.16.1.4
gpe2_f1.1=172.16.1.66
gpe2_b1.0=192.168.32.49
npe1_f1.0=172.16.1.5
npe1_b1.0=192.168.32.81
npe1_m.0=192.168.48.81
npe1_b1.1=192.168.32.82
lc_f1.0=172.16.1.6
lc_b1.0=192.168.32.97
lc_m.0=192.168.48.97
lc_b1.1=192.168.32.98
drn05.arl.wustl.edu=128.252.153.209
Fred Kuhns - 3/24/2016
[ iface ]
__name__=eth0
dev=eth0
name=gpe1_f1.0
hwaddr=00:0e:0c:85:e4:40
type=data
lanid=fabric1
port=0
vlan=0
ipaddr=172.16.1.3
ipnet=172.16.1.0
ipbcast=172.16.1.63
ipmask=255.255.255.192
arp=no
enable=yes
[ iface ]
__name__=eth0.2
dev=eth0.2
name=gpe1_f1.0
hwaddr=00:0e:0c:85:e4:40
vlan=2
type=data
lanid=fabric1
port=0
ipaddr=128.252.153.209
ipnet=128.252.0.0
ipbcast=128.252.255.255
ipmask=255.255.0.0
arp=no
enable=yes
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[ iface ]
__name__=eth1
dev=eth1
name=gpe1_f1.1
hwaddr=00:0e:0c:85:e4:42
type=data
lanid=fabric1
port=1
vlan=0
ipaddr=172.16.1.65
ipnet=172.16.1.64
ipbcast=172.16.1.127
ipmask=255.255.255.192
arp=no
enable=yes
[ iface ]
__name__=eth2
dev=eth2
name=gpe1_b1.0
hwaddr=00:0e:0c:85:e4:3e
type=control
lanid=base1
port=0
vlan=0
ipaddr=192.168.32.65
ipnet=192.168.32.0
ipbcast=192.168.39.255
ipmask=255.255.248.0
arp=yes
enable=yes
13
ethers
# ---------------------------------------------------------------------# Board Type cp, Name cp1, Slot 0
# nserv_f1.0
fabric1/0
00:1E:C9:FE:76:23
172.16.1.1
# nserv
base1/0
00:1E:C9:FE:76:22
192.168.32.1
# nserv_gbl
maint/0
00:10:18:32:00:76
192.168.48.1
# ---------------------------------------------------------------------# Board Type shmgr, Name shmgr1, Slot 0
# shmgr
maint/0
00:50:C2:3F:D2:74
192.168.48.2
# ---------------------------------------------------------------------# Board Type hub, Name hub1, Slot 1
# hub
base1/0
00:00:50:3D:10:6B
192.168.32.17
# hub1_f1.0
fabric1/0
00:00:50:3D:10:B0
172.16.1.2
# hub1_m.0
maint/0
00:00:50:3D:10:6C
192.168.48.17
# ---------------------------------------------------------------------# Board Type gpe, Name gpe1, Slot 4
# gpe1_f1.0
fabric1/0
00:0e:0c:85:e4:40
172.16.1.3
# gpe1_f1.1
fabric1/1
00:0e:0c:85:e4:42
172.16.1.65
# gpe1_b1.0
base1/0
00:0e:0c:85:e4:3e
192.168.32.65
# ----------------------------------------------------------------------
Fred Kuhns - 3/24/2016
# ---------------------------------------------------------------------# Board Type gpe, Name gpe2, Slot 3
# gpe2_f1.0
fabric1/0
00:0E:0C:85:E6:08
172.16.1.4
# gpe2_f1.1
fabric1/1
00:0E:0C:85:E6:0A
172.16.1.66
# gpe2_b1.0
base1/0
00:0E:0C:85:E6:06
192.168.32.49
# ---------------------------------------------------------------------# Board Type npe, Name npe1, Slot 5
# npe1_f1.0
fabric1/0
00:00:00:00:00:00
172.16.1.5
# npe1_b1.0
base1/0
00:00:50:3d:07:3e
192.168.32.81
# npe1_m.0
maint/0
00:00:50:3D:07:3C
192.168.48.81
# npe1_b1.1
base1/1
00:00:50:3D:07:3D
192.168.32.82
# ---------------------------------------------------------------------# Board Type lc, Name lc1, Slot 6
# lc_f1.0
fabric1/0
00:00:50:3d:0b:d4
172.16.1.6
# lc_b1.0
base1/0
00:00:50:3D:08:26
192.168.32.97
# lc_m.0
maint/0
00:00:50:3D:08:24
192.168.48.97
# lc_b1.1
base1/1
00:00:50:3D:08:25
192.168.32.98
# ---------------------------------------------------------------------# Gateway for drn05 (128.252.153.209), VLAN 2
00:00:50:3d:0b:d4
128.252.153.31
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BootAPI calls made by the BootManager
• PLCAPI/BootAPI calls
1. GetSession(node_id, auth, node_ip)
returns new session key for node
2. BootCheckAuthentication(Session)
returns true if Session id is valid
3. GetNodes(Session, node_id,
[‘nodegroup_ids’,‘nodenetwork_ids’,‘model’,‘site_id’])
returns the indicated parameters for this node (ie. node_id).
4. GetNodeNetworks(Session, node_id, nodenetwork_ids)
returns list of interfaces
[ broadcast, network, ip, dns1, dns2, hostname, netmask, gateway, nodenetwork_id,
method, mac, node_id, is_primary, type, bwlimit, nodenetwork_settings_ids ]
5. GetNodes(Session, node_id, ‘nodegroup_ids’)
returns list of group ids associated with this node
6. GetNodeGroups(Session, nodegroup_id, ‘name’)
returns the name string for each node group (in out case ‘SPP’)
7. GetNodeNetworkSettings()
8. BootUpdateNode(Session, boot_state)
Sets node’s boot state at PLC
9. BootNotifyOwners(Session, “event”, params)
causes email to be sent to the list of node owners.
10.BootUpdateNode(Session, ssh_host_key)
records the latest ssh public key for node.
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15
Other PLC/Server interactions
• HTTP/HTTPS
– Upload alpina boot logs:
BOOT_SERVER_URL += /alpina-logs/upload.php
– Compatibility step (we don’t use)
BOOT_SERVER_URL +=/alpina-BootLVM.tar.gz
BOOT_SERVER_URL +=/alpina-PartDisk.tar.gz
– Download file system tar file containing basic plab node
environment
BOOT_SERVER_URL +=
/boot/bootstrapfs-”group”-”arch”.tar.bz2
– If not in config file get node id
BOOT_SERVER_URL += /boot/getnodeid.php
– Get yum update configuration file:
BOOT_SERVER_URL += /PlanetLabConf/yum.conf.php
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16
System Initialization: Stage 1
• Use PXE boot and download pxelinux and config file:
– boot using basic initial ramdisk, overlay and kernel
– Use dhcp, tftp and pxe server on the cp, files stored in the
tfptboot directory.
pxelinux.o, pxelinux.cfg/<GPE_IPADDR>
bootcd.img, overlay_gpeX.img, kernel
– The overlay image is modified for each GPE to include it’s
configuration file, modified planetlab config files and an spp
node python script.
• Currently this is a manual step but ultimate (long term) plan is for the
gnm daemon to create the individual images
• The overlay image contains several files that identify the node and
provide the name and address for the PLC and Boot servers. I have
modified these to point o the cp.
• Just before booting the final kernel I change these values to refer to
the “real” plc/api servers.
Fred Kuhns - 3/24/2016
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17
System initialization: Stage 2
• Boot into basic, intermediate environment
• Initial configuration information obtained from the overlay
image
–
–
–
–
–
Includes spp_conf.txt defines gpe interfaces
Includes ethers file contains mac addresses for static arp entries
Updated plnode.txt with GPE’s control interface mac address
Modified bootserver files listing the cp as the bootserver
Includes spp_netinit.py, a python script to configure the interfaces
and update system configuration files.
• Enables “primary” interface and key network configuration
files such as resolv.conf
• Downloads BootManager source from the “boot_server”
– In our case we download from the CP
– I explicitly disable the use of ssl and certs (the certifictes on the
overlay image are for the PLC server and not the CP)
– Our assumption is that the control (base) network is “secure” plus
within an SPP node we don’t have to worry about authentication
issues.
Fred Kuhns - 3/24/2016
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WASHINGTON UNIVERSITY IN ST LOUIS
18
BootManager
• Opens connection to PLCAPI on bootserver
– Opens connection to our proxy plcapi/bootapi server running on the CP
• Get node session key: GetSession(node_id, auth, node_ip)
– Since each call to create a session invalidates any existing keys we intercept this
call on the cp and use a common session key for all gpes.
• Determines node’s configuration
– reads plnode.txt for node_id, node_key and the primary interface settings
• we use DHCP to configure the control interface but I do not define a dns server
– if node_id is not found then reads URL=BootServer/boot/getnodeid.php
• Call BootCheckAuthentication(Session) to verify session key
• Calls GetNodes to get the boot_state, node_groups, model, site_id
• Calls GetNodeNetworks to get configuration information for all interfaces
– in our case the call would return the externally visible network parameters, which
differ from how each GPE is configured
– long term, we can intercept this call and return GPE specific interface config info.
– Short term we use a configuration file in the overlay image with similarly
formatted information. I have replaced the BootManager code that reads the
config info and configures the interfaces.
– I had to add support for VLANs and our internal interfaces.
Fred Kuhns - 3/24/2016
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19
BootManager Continued
• Download the nodes final filesystem image from the boot_server
– in our case this is the CP, http://CP/boot/bootstrap-planetlab-i386-tar.bz2
• Download yum config file
– I am not currently downloading, http://CP/PlanetLabConf/yum.conf
• Call BootUpdateNode with new boot_state
– we will need to intercept this call and both report and set node state based on all
GPEs.
• Call BootNotifyOwners with new state
– forward to PLC
• Update network configuration in new “sysimg”
– downloads //BootServer/ PlanetLabConf/plc_config file
• In our case I have copied onto the overlay image in the /usr/boot directory.
– calls GetNodeNetworkSettings for a list of any additional interface attributes
then creates various configuration files: hosts, resolv.conf, network, ifcfg-eth*
• I have replaced this step with our own script spp_netinit.py and configuration file
spp_conf.txt which I use to create the same config files in both the current
environment and the new sysimg.
– updates devices and creates the initrd image used for the next stage
– finally boots a new kernel using the bootstrap file system
Fred Kuhns - 3/24/2016
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20
Boot States
• The list of boot states
is changing as I write
this
• In our version of the
plc the states are
shown on the right
State
Description
install verified -> rins new instal: verify install
with user.
error->dbg
install verified -> rins
Install: same as new
error->dbg
reinstall: reformat disk
success->boot
and reinstall all software
error->dbg
and files.
boot
boot: boot using existing
partitions
error -> dbg
Success: same as boot
debug: boot node
Fail: bootcd image
diagnostics: bootcd
user controlled
image
new
inst
rins
boot
dbg
diag
disable
Fred Kuhns - 3/24/2016
Next state
user controlled
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disable: bootcd image
21
PLC Database
• The PlanetLab central database keeps a database describing
all nodes, slices and users/people.
• Slice data base keeps track of all slices and their node
bindings
• The Node database includes externally visible properties and
the ability to associate general attributes with these properties
– the current (or next) node state (boot_state)
– node identifier (node_id)
– list of interface configuration parameters
• ip address information, mac address, generic list of attributes
– node’s owner
– node’s site identifier (site_id)
– model, can be used to specify a set of attributes forthe node. For
example: minhw, smp
– current ssh host key (ssh_host_key)
– node groups: I believe this is being depricated in favor of associate a
generic set of attributes with a node or its interfaces.
Fred Kuhns - 3/24/2016
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22
SPP Specific Information
• On an SPP node the resource manager needs to know what kind of board is
inserted in each slot and its I/O characteristics
• Needs to associate interface MAC addresses with boards and interfaces. Or
with standalone system connected to an RTM or front panel (for example
the CP).
• Also need to know which interfaces are connected to the base and which to
the fabric switch when bringing up general purpose systems.
• There is not a convenient mechanism for determining this at run time so I
have a configuration file.
• Also need to know what resources are available on each board and
allocation policies.
• Must also have a list of external links, their addresses and the address of
any peers (Ethernet).
• Need to keep track of current nodes state (as kept by PLC) as well as the
state of each individual board.
• Need to share state between different daemons
Fred Kuhns - 3/24/2016
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23
Node Configuration File
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<spp>
<code_options>
<IPv4 sram="fixed" queues="variable" id="0" fltrs="variable"> <sram> 1024 </sram> </IPv4>
<I3 sram="fixed" queues="variable" id="1" fltrs="variable"> <sram> 1024 </sram> </I3> </code_options>
<components>
<cp name="cp1" slot="0" cat="host" alias="nserv">
<interface name="nserv_f1.0" dev="GigE" lanid="fabric1" assoc="" port="0"> ... </interface> ... </cp>
<shmgr name="shmgr1" slot="0" cat="atca" alias="shmgr1">
<interface name="shmgr" dev="GigE" lanid="maint" assoc="" port="0"> ... </interface> ... </shmgr>
<hub name="hub1" slot="1" cat="atca" alias="hub1">
<switch lanid="base1"> </switch> <switch lanid="fabric1"> <bw> 10000000000 </bw> </switch>
<interface name="hub" dev="GigE" lanid="base1" assoc="" port="0"> ... </interface> ... </hub>
<gpe name="gpe1" slot="4" cat="atca" alias="gpe1">
<interface name="gpe1_f1.0" dev="GigE" lanid="fabric1" assoc="" port="0"> ... </interface> ... </gpe>
<npe name="npe1" slot="5" cat="atca" alias="npe1">
<product> Radisys_7010 </product> <model> NPEv1 </model>
<interface name="npe1_f1.0" dev="10GigE" lanid="fabric1" assoc="" port="0"> ... </interface> ... </npe>
<lc name="lc1" slot="6" cat="atca" alias="lc">
<product> Radisys_7010 </product>
<model> LCv1 </model>
<interface name="lc_f1.0" dev="10GigE" lanid="fabric1" assoc="" port="0"> ... </interface> ...
<interface name="drn05" dev="GigE" lanid="external" port="0"> ...
<link peering="true" primary="true" dev="GigE"> ... </link> ... </interface></lc>
</components>
</spp> Fred Kuhns - 3/24/2016
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24
CP Record
<!-- Interface parameters defined by user in original “xml” file -->
<cp name="cp1" slot="0" cat="host" alias="nserv">
<interface name="nserv_f1.0" dev="GigE" lanid="fabric1" assoc="" port="0">
<!-- All internal IP addrs assigned by configuration software based on runtime parameters -->
<ipaddr>172.16.1.1</ipaddr> <ipnet>172.16.1.0</ipnet>
<ipmask>255.255.255.192</ipmask> <ipbcast>172.16.1.63</ipbcast>
<!-- Device parameters and comment set by user in the original “xml” file -->
<device> eth0 </device> <hwaddr> 00:1E:C9:FE:76:23 </hwaddr>
<desc> Interface connected to HUB's fabric port </desc>
</interface>
<interface name="nserv" dev="GigE" lanid="base1" assoc="" port="0">
<ipaddr>192.168.32.1</ipaddr> <ipnet>192.168.32.0</ipnet>
<ipmask>255.255.248.0</ipmask> <ipbcast>192.168.39.255</ipbcast>
<device> eth1 </device> <hwaddr> 00:1E:C9:FE:76:22 </hwaddr>
<desc> System control processor's Base Ethernet connection </desc>
</interface>
<interface name="nserv_gbl" dev="GigE" lanid="maint" assoc="" port="0">
<ipaddr>192.168.48.1</ipaddr> <ipnet>192.168.48.0</ipnet>
<ipmask>255.255.248.0</ipmask> <ipbcast>192.168.55.255</ipbcast>
<device> eth2 </device> <hwaddr> 00:10:18:32:00:76 </hwaddr>
<desc> Connection to the maintenance ports </desc>
</interface>
</cp>
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25
GPE Record
<gpe name="gpe1" slot="4" cat="atca" alias="gpe1">
<interface name="gpe1_f1.0" dev="GigE" lanid="fabric1" assoc="" port="0">
-- IP Address Info -<device> eth0 </device> <hwaddr> 00:0e:0c:85:e4:40 </hwaddr> (Device Data)
<bw> 1000000000 </bw><share> 2 </share> (Resource Policy)
<desc> MAC=N+2, Fabric 1/0 or AMC Port 0 </desc></interface>
<interface name="gpe1_f1.1" dev="GigE" lanid="fabric1" assoc="" port="1">
-- IP Address Info -- <device> eth1 </device> <hwaddr> 00:0e:0c:85:e4:42 </hwaddr>
<desc> MAC=N+4, Fabric 1/1 or Maintenance Port 1 </desc></interface>
<interface name="gpe1_b1.0" dev="GigE" lanid="base1" assoc="" port="0">
-- IP Address Info -- <device> eth2 </device> <hwaddr> 00:0e:0c:85:e4:3e </hwaddr>
<desc> MAC=N, Base connection to Primary HUB </desc></interface>
<interface name="gpe1_b2.0" dev="GigE" lanid="base2" assoc="" port="0">
-- IP Address Info -- <device> eth3 </device> <hwaddr> 00:0e:0c:85:e4:3f </hwaddr>
<desc> MAC=N+1, Base connection to alternate HUB </desc></interface>
<interface name="gpe1_f2.0" dev="GigE" lanid="fabric2" assoc="" port="0">
-- IP Address Info -- <device> eth4 </device> <hwaddr> 00:0e:0c:85:e4:41 </hwaddr>
<desc> MAC=N+3, Fabric 2/0 or AMC Port 1 </desc></interface>
<interface name="gpe1_f2.1" dev="GigE" lanid="fabric2" assoc="" port="1">
-- IP Address Info -- <device> eth5 </device> <hwaddr> 00:0e:0c:85:e4:43 </hwaddr>
<desc> MAC=N+5, Fabric 2/1 or Maintenance Port 2 </desc></interface>
</gpe>
Fred Kuhns - 3/24/2016
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26
NPE Record
<npe name="npe1" slot="5" cat="atca" alias="npe1">
<product> Radisys_7010 </product> <model> NPEv1 </model>
<interface name="npe1_f1.0" dev="10GigE" lanid="fabric1" assoc="" port="0">
-- IP Address Info --- Device Data --- Resource Policy -<desc> Fabric interface used for both NPUs </desc></interface>
<interface name="npe1_b1.0" dev="GigE" lanid="base1" assoc="npua" port="0">
-- IP Address Info --- Device Data -<desc> Primary control interface associated with NPUA </desc></interface>
<interface name="npe1_m.0" dev="GigE" lanid="maint" assoc="npua" port="0">
-- IP Address Info --- Device Data -<desc> NPUA Front Maintenance Port </desc></interface>
<interface name="npe1_b1.1" dev="GigE" lanid="base1" assoc="npub" port="1">
-- IP Address Info --- Device Data -<desc> NPUB Front Maintenance Port -- But it's been patched to the Base switch </desc>
</interface>
</npe>
Fred Kuhns - 3/24/2016
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27
LC Record
<lc name="lc1" slot="6" cat="atca" alias="lc">
<product> Radisys_7010 </product> <model> LCv1 </model> (Model Data)
<interface name="lc_f1.0" dev="10GigE" lanid="fabric1" assoc="" port="0">
-- IP Address Info -- -- Device Data -- -- Resource Policy -- </interface>
<interface name="lc_b1.0" dev="GigE" lanid="base1" assoc="npua" port="0">
-- IP Address Info -- -- Device Data -- </interface>
<interface name="lc_m.0" dev="GigE" lanid="maint" assoc="npua" port="0">
-- IP Address Info -- -- Device Data -- </interface>
<interface name="lc_b1.1" dev="GigE" lanid="base1" assoc="npub" port="1">
-- IP Address Info -- -- Device Data --</interface>
<interface name="drn05" dev="GigE" lanid="external" port="0">
<hwaddr> 00:00:50:29:b1:46 </hwaddr>
<link peering="true" primary="true" dev="GigE">
-- Link IP Address Info -- -- Device Data -- -- Resource Policy -<domain> arl.wustl.edu </domain> <hostname> drn05 </hostname>
<dns1> 128.252.133.45 </dns1> <dns2> 128.252.120.1 </dns2>
<peerIP> 128.252.153.31 </peerIP> <peerMAC> 00:0F:B5:FB:D8:67 </peerMAC>
<vlan> 2 </vlan>
<port_pool> <!-- used for NAT -->
<udp count="500" start="30000"> </udp>
<tcp count="500" start="30000"> </tcp> </port_pool>
<desc> p2p link from drn05 to drn06, the plc </desc> </link></interface>
</lc>
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28
SRM Interface
NATD to SRM:
[egress_map, ingress_map]
get_sched_map(LinkIP, BoardMAC)
Depricated: original natd interface!
{fid, port} alloc_epmap(map)
status free_epmap(fid)
FS to SRM:
?? (map vlan to slice id)
RMP to SRM:
Interfaces (Line Card Links):
if_list get_interfaces(plabID)
ifn get_ifn(plabID, ipaddr)
if_entry get_ifattrs(plabID, ifn) :
ipaddr get_ifpeer(plabID, ifn) :
retcode resrv_fpath_ifbw(bw, ifn)
retcode reles_fpath_ifbw(bw, ifn)
To be implemented:
retcode resrv_slice_ifbw(plabID, bw, ifn)
retcode reles_slice_ifbw(plabID, bw, ifn)
Fred Kuhns - 3/24/2016
EndPoints (local IP and Port number):
NATD changes may have broken these
ep alloc_endpoint(PlabID, ep)
status free_endpoint(PlabID, ipaddr,
port, proto)
Fast Path:
fp_params alloc_fastpath(PlabID,
copt, bwspec,rcnts, mem)
status free_fastpath()
Fast-Path Meta-Interfaces:
[mi, ep] alloc_udp_tunnel(bw, ipaddr, port)
ep get_endpoint(mi)
status free_udp_tunnel(ipaddr, port)
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RMP Interface
Prototype completed:
To do:
19. ep alloc_endpoint(ep)
1. result noop()
20. status free_endpoint(ipaddr, port, proto)
2. version get_version()
21. -- alloc_tunnel -3. result add_slice(plabID, len, name)
22. -- free_tunnel -4. result rem_slice(plabID)
23. [mi, ep] alloc_udp_tunnel(fpid, bw, ip, port)
5. ret_t alloc_fastpath(copt, bw, rcnts, mem)
24. status free_udp_tunnel(ipaddr, port)
6. void free_fastpath()
25. ep get_endpoint(fpid, mi)
7. if_list get_interfaces()
26. retcode write_fltr(fpid, fid, fltr)
8. ifn get_ifn(ipaddr)
27. retcode update_result(fpid, fid, result)
9. if_entry get_ifattrs(ifn)
28. fltr_t get_fltr_bykey(fpid, key)
10. ipaddr get_ifpeer(ifn)
11. retcode alloc_pl_ifbw(ifn, bw)
29. fltr_t get_fltr_byfid(fpid, fid)
12. retcode reles_pl_ifbw(ifn, bw)
30. result lookup_fltr(fpid, key)
13. retcode alloc_fpath_ifbw(fpid, ifn, bw)
31. retcode rem_fltr_bykey(fpid, key)
14. retcode reles_fpath_ifbw(fpid, ifn, bw)
32. retcode rem_fltr_byfid(fpid, fid)
15. retcode bind_queue(fpid, miid, list_type, qids)
33. stats_t read_stats(fpid, sindx, flags)
16. actual_bw set_queue_params(fpid, qid,
34. result clear_stats(sindx)
threshold, bw)
35. handle create_periodic(fp,indx,P,cnt,flags)
36. retcode delete_periodic(fpid, handle)
17. [threshold, bw] get_queue_params(fpid, qid)
37. retcode set_callback(fpid, handle, xport)
18. [u32 Pkts, u32 Bytes] get_queue_len(fpid, qid)
38. stats_t get_periodic(fpid, handle)
39. retcode mem_write(fpid, offset[, len], data)
40. data mem_read(fpid, offset, len)
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30
NPE SCD Interface
SRM to SCD
status set_fastpath(fpid, copt, VLAN, params, mem)
status enable_fastpath(fpid)
status disable_fastpath(fpid)
status rem_fastpath(fpid)
status set_sched_params(sid, ifn, BWmax, BWmin)
status set_encap_cb(sid, srcIP, dMAC)
status set_fpmi_bw(fpid, sid, miid, bw)
status start_mes()
status stop_mes()
status set_encap_gpe(fpid, gpeIP, npeIP)
result write_mem(kpa, len, data)
data read_mem(kpa, len)
SRM & RMP to SCD
ret_t write_fltr(dbid, fid, key, mask, result)
ret_t update_result(dbid, fid, result)
fltr get_fltr_bykey(dbid, key)
fltr get_fltr_byfid(dbid, fid)
result lookup_fltr(dbid, key)
retcode rem_fltr_bykey(dbid, key);
retcode rem_fltr_byfid(dbid, fid)
Fred Kuhns - 3/24/2016
RMP to SCD
status set_gpe_info(exPort, ldPort,
exQID, ldQID)
u32 result bind_queue(u16 miid,
u8 list_type,
u16[] qid_list)
u32 bw set_queue_params(u16 qid,
u32 threshold, u32 bw)
{u32 threshold, u32 bw}
get_queue_params(u16 qid)
{u32 pktCnt, u32 byteCnt}
get_queue_len(u16 qid)
result write_sram(offset, len, data)
data read_sram(offset, len)
stats = read_stats(sindx, flags)
result = clear_stats(sindx)
handle
create_periodic(sindx, P, cnt, flags)
retcode del_periodic(handle)
retcode set_callback(handle, udp_port)
stats = get_periodic(handle)
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LC SCD Interface
SRM to SCD
status set_sched_params(sid, ifn, BWmax, BWmin)
status set_sched_mac(sid, MACdst, MACsrc)
u32 result set_queue_sched(u16 qid, u16 sid)
result write_mem(kpa, len, data)
RMP to SCD
data read_mem(kpa, len)
u32 actual_bw set_queue_params(u16 qid,
u32 threshold, u32 bw)
SRM and RMP to SCD:
{u32 threshold, u32 bw}
ret_t write_fltr(dbid, fid, key, mask, result)
get_queue_params(u16 qid)
ret_t update_result(dbid, fid, result)
{u32 pktCnt, u32 byteCnt}
fltr get_fltr_bykey(dbid, key)
get_queue_len(u16 qid)
fltr get_fltr_byfid(dbid, fid)
stats = read_stats(sindx, flags)
result lookup_fltr(dbid, key)
result = clear_stats(sindx)
retcode rem_fltr_bykey(dbid, key);
handle create_periodic(sindx, P, cnt, flags)
retcode rem_fltr_byfid(dbid, fid)
retcode del_periodic(handle)
retcode set_callback(handle, udp_port)
stats = get_periodic(handle)
Fred Kuhns - 3/24/2016
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32
Slice Example
• Get list of interfaces, their Ip addresses and available bandwidth
if_list = {if_entry, ...}
if_entry = {u16 ifn, // logical interface number
u16 type, // peering or multi-access
u32 ipaddr, // interface’s IP address
u32 linkBW, // Link’s native BW
u32 availBW} // BW available for allocation
struct epoint_t {u32 bw,
u32 ipaddr; // interface’s IP address
u16 port, // UDP port number for meta-interface
u32 bw;} // total BW required for meta-interface
iflist = get_interfaces(iflist); // return list of all available interfaces
• Estimate the computational complexity and memory bandwidth requirements on NPE.
bwSpec = {BWmax=totalBW, BWmin=0}; // fast path total BW requirement
• max general NPE resource counts for this example I just assume a max number but in
general it may be that a user scales it by the number of meta-interfaces they will use.
fpCounts = {FLTR_CNT, QID_CNT, BUFF_CNT, STATS_CNT};
• Request substrate to allocate a fastpath instance for the IPv4 code option, assume we will
use the default sram buffer sizes. Will also need to listen to returned sockes.
[fpid, sockets] = alloc_fastpath(ipv4_copt, bwSpec, fpCnts, {IPV4_SRAM_SZ, 0});
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33
Slice Example - Continued
• allocate one meta-interfaces for each external interface and assign
our default UDP port number and BW requirement
struct mi_t {uint_t mi; epoint_t rp;};
mi_t milist[iflist.len()];
for (indx = 0, mi = 0; indx < len(iflist); ++indx) {
if (miBW > iflist[indx].availBW) throw Error;
// allocate total BW required on this interface
if (alloc_fpath_ifbw(fpid, iflist[indx].ifn, miBW)==1)
throw Error;
// Allocate one meta-interface on this interface
milist[indx] = alloc_udp_tunnel(fpid, miBW,
iflist[indx].ipaddr,
myPort)
my_bind_queues(milist+indx);
my_add_routes(milist+indx);
}
Fred Kuhns - 3/24/2016
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34
Test SPP Node
keystone.arl.wustl.edu
128.252.153.81
scd
natd
0/6
lc_b1a = 192.168.64.97/20
the ARL network
128.252.153.*
vlan 2
eth2.2
128.252.153.XXX
eth0:0
128.252.153.XXX
eth1
eth0
lc1_data = 171.16.1.6/26
...
Egress XScale
eth0
128.252.153.YYY
Hub
Ingress XScale
b1a
0/6
FP
1/6
FP
1/7
eth0
b1b
“Router”
Issue
Mounting /opt/crossbuild/*
from ebony. Could export dirs
form the “Router” host. Or
could use ebony rather than
“Router”. In that case will
need an external switch
connecting line cards of spp?
to ebony’s eth2.2.
Fred Kuhns - 3/24/2016
b1
noarp
eth0.2 vlan 2
f1/0
gbe2_data = 171.16.1.5/26 eth0
keystone.arl.wustl.edu
0/5
2/1
f1/1
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eth0 cp_data = 171.16.1.1/26
b2
eth2 gpe1_ctrl = 192.168.64.33/20
noarp
vlan 2 eth0.2 keystone.arl.wustl.edu
eth0 gbe1_data = 171.16.1.2/26
f2/1*
eth1 gpe1_int = 172.16.1.66/26
GPE2 (Slot 3)
/etc/{ethers,hosts}
/etc/sysconfig/network-scripts/ifcfg-eth*
gpe2_int = 172.16.1.68/26 eth1
cp_ctrl = 192.168.64.1/20
f1/1*
GPE3 (Slot 4)
noarp
keystone.arl.wustl.edu eth0.2 vlan 2
f1/0
gbe2_data = 171.16.1.4/26 eth0
eth2
noarp
vlan 2 eth0.2 keystone.arl.wustl.edu
RTM
3/2
f1/1
b1
b1
/etc/{ethers,hosts}
/etc/sysconfig/network-scripts/ifcfg-eth*
0/5
gpe2_ctrl = 192.168.64.65/20 eth2
dhcpd
/tftpboot/
ramdisk.gz
zImage.ppm10
GPE1 (Slot 2)
/etc/{ethers,hosts}
/etc/sysconfig/network-scripts/ifcfg-eth*
gpe2_int = 172.16.1.69/26 eth1
/etc/
dhcpd.conf
ethers
hosts
f1/0
GPE4 (Slot 5)
gpe2_ctrl = 192.168.64.81/20 eth2
srm
RTM
3/1
FP
1/9
192.168.64.2
IP Routing
proxy arp for keystone
CP
f1/0
scd
lc_b1b = 192.168.64.98/20
192.168.64.17
Line Card (Slot 6)
0/4
0/3
0/4
0/3
/etc/{ethers,hosts}
/etc/sysconfig/network-scripts/ifcfg-eth*
b1
eth2 gpe2_ctrl = 192.168.64.49/20
noarp
vlan 2 eth0.2 keystone.arl.wustl.edu
f1/0
eth0 gbe2_data = 171.16.1.3/26
f1/1
eth1 gpe2_int = 172.16.1.67/26
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Test Bed Use
• Core platform issues:
– Can we use the second fabric port on the GPE boards?
– The hub does not display stats or mac fwd entries for the slots with GPEs. It
used to work.
– The radisys shelf manager
• does not reliably reset boards
• Base1 interface disabled on slot 2
• NAT/Line Card testing
– Overall reliability
– Add support for aging
– Specific issues (jdd)
• restarting line card (without reboot) occasionally results in data-path thinking
the scratch ring to the xscale is full.
• looping iperf test from cp occasionally stalls with no packets getting through LC
• Lookup needs fix to not use DONE bit to indicate a tcam lookup is done.
• GPE/Intel board testing
Fred Kuhns - 3/24/2016
Washington
WASHINGTON UNIVERSITY IN ST LOUIS
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