Difference between revisions of "Lentil"

Latest revision as of 15:11, 12 March 2015

General Information

Lentil performs backups. Its autofs is configured to mount harddrives labeled npg-daily-XX onto /mnt/npg-daily/XX where XX is a label number. Its backup script needs further investigation to determine exactly how it works.

As of Feb. 15, 2015 Lentil is mounted with the following which will last us awhile:

/dev/sdd1 mounted at /mnt/npg-daily/51; A filled 2TB hard drive
/dev/sda1 mounted at /mnt/npg-daily/52; A 4TB hard drive
/dev/sdc1 mounted at /mnt/npg-daily/53; A 4TB hard drive
/dev/sdb1 as the root file system. Don't hot swap this.

Hardware Information

 Motherboard: Asus P5QL-CM
   Specifications: Specifications
   User Manual: V2.pdf Users Manual
 Memory: 2 GB DDR2

Authentication

Lentil authenticates against the LDAP server running on Einstein, by connecting to einstein.farm.physucs.unh.edu using sssd. Previously, Lentil went on the UNH network to einstein.unh.edu, but this is blocked (I think by ip-tables). The farm network is the better choice anyhow.

Network Configuration

Currently connected to farm networks via our switch and a direct port to UNH network. Note: Previously, lentil went through the switch and a VLAN network. New network policy at UNH makes this not possible.

eth0
  Hostname: lentil.farm.physics.unh.edu
  HWaddr 00:30:48:63:BB:40
  IP:10.0.0.250
eth1
  Hostname: lentil.unh.edu
  HWaddr 00:30:48:63:BB:41
  IP:132.177.88.254

Access Configuration

 /etc/security/access.conf
 Any valid user can log into lentil from any machine on the Internet.

Backup Configuration

Location of Backups

/mnt/npg-daily-current
/mnt/npg-daily/xx/

All backup related scripts are:

 /etc/auto.npg-daily
 /usr/local/bin/rsync_backup.py
 /etc/cron.daily/0rsync_backup
 /usr/sbin/vgcfgbackup
 /etc/rsync-backup.conf

SNMP Configuration

 /etc/snmp/snmpd.conf
 Copied from Pepper.

Smartd Configuration

The configuration file is at /etc/smartd.conf. The smartd.conf does a silent check, which only emails reports if the SMART health status comes back as failed. This smartd.conf will look different from alot of the other computers because it doesn't have a RAID card installed, so each disk is mounted seperately for backups.

SMARTD Smartd setup and configuration

rc.local Configuration

This script is modified to run commands when the system is done powering on.

This will send the boot.log to npg-admins everytime the pc is started.

 mail -s "$HOSTNAME Started, Here is the boot.log" npg-admins@physics.unh.edu < /var/log/boot.log

If Lentil isn't sending e-mails

Sometimes after a reboot Lentil won't send its regular e-mail reports. To fix this you simply need to restart sendmail. Be aware that it has saved all of those messages it didn't send, and once sendmail is working you'll get all of them at once.

Wake On LAN

This is used so we can shutdown the server and remotely turn it back on. Wake On Lan Command:

 sudo ether-wake 00:1e:4f:9b:13:90

Fixes

Kernel Crash Fix (2/24/2009)
- Hardware Issues History

Hard Drive Enclosure Replacement (12/19/2009)
- Hardware Issues History

Important Note:

 If this appears while booting:
   request_module: runaway loop modprobe binfmt-464c
 This is an indication that a drive (in the supermicro hot swap bay) is plugged in that 
 can't be mounted, like a drive with a software raid setup on it, so just pull the drive 
 and reboot and it should boot properly.

@@ Line 1: / Line 1: @@
 == General Information ==
-Lentil performs [[backups]]. Its backup script needs further investigation to determine exactly how it works.
+Lentil performs [[backups]]. Its autofs is configured to mount harddrives labeled npg-daily-XX onto /mnt/npg-daily/XX where XX is a label number. Its backup script needs further investigation to determine exactly how it works.
-Hostnames: <code>lentil.unh.edu</code>, <code>lentil.farm.physics.unh.edu</code>
+As of Feb. 15, 2015 Lentil is mounted with the following which will last us awhile:
+*/dev/sdd1 mounted at /mnt/npg-daily/51; A filled 2TB hard drive
+*/dev/sda1 mounted at /mnt/npg-daily/52; A 4TB hard drive
+*/dev/sdc1 mounted at /mnt/npg-daily/53; A 4TB hard drive
+*/dev/sdb1 as the root file system. Don't hot swap this.
+== Hardware Information ==
+  Motherboard: Asus P5QL-CM
+    Specifications: [http://nuclear.unh.edu/wiki/pdfs/motherboards/16744.pdf Specifications]
+    User Manual: [http://nuclear.unh.edu/wiki/pdfs/motherboards/E4411_P5QL-CM V2.pdf Users Manual]
+  Memory: 2 GB DDR2
+== Authentication ==
+Lentil authenticates against the LDAP server running on Einstein, by connecting to einstein.farm.physucs.unh.edu using sssd.
+Previously, Lentil went on the UNH network to einstein.unh.edu, but this is blocked (I think by ip-tables). The farm network is the better choice anyhow.
 == Network Configuration ==
-Currently connected to the unh and farm networks via the switch and VLAN.
+Currently connected to farm networks via our switch and a direct port to UNH network.
-=== /etc/sysconfig/network-scripts/ifcfg-farm ===
+Note: Previously, lentil went through the switch and a VLAN network. New network policy at UNH makes this not possible.
-<pre>DEVICE=eth0
-BOOTPROTO=none
+<pre>
-HWADDR=00:0E:0C:4C:E1:52
+eth0
-IPADDR=10.0.0.250
+  Hostname: lentil.farm.physics.unh.edu
-NETMASK=255.255.252.0
+  HWaddr 00:30:48:63:BB:40
-ONBOOT=yes
+  IP:10.0.0.250
-TYPE=Ethernet
+eth1
-USERCTL=no
+  Hostname: lentil.unh.edu
-IPV6INIT=no
+  HWaddr 00:30:48:63:BB:41
-PEERDNS=yes
+  IP:132.177.88.254
-</pre>
-=== /etc/sysconfig/network-scripts/ifcfg-unh ===
-<pre># UNH network
-VLAN=yes
-DEVICE=eth0.2
-BOOTPROTO=none
-BROADCAST=132.177.91.255
-IPADDR=132.177.88.254
-NETMASK=255.255.252.0
-NETWORK=132.177.88.0
-ONBOOT=yes
-REORDER_HDR=no
-GATEWAY=132.177.88.1
-TYPE=Ethernet
-USERCTL=no
-IPV6INIT=no
-PEERDNS=yes
-</pre>
-=== /etc/sysconfig/network-scripts/ifcfg-lo ===
-<pre>DEVICE=lo
-IPADDR=127.0.0.1
-NETMASK=255.0.0.0
-NETWORK=127.0.0.0
-# If you're having problems with gated making 127.0.0.0/8 a martian,
-# you can change this to something else (255.255.255.255, for example)
-BROADCAST=127.255.255.255
-ONBOOT=yes
-NAME=loopback
 </pre>
 == Access Configuration ==
-=== /etc/security/access.conf ===
+  /etc/security/access.conf
+  Any valid user can log into lentil from any machine on the Internet.
+== Backup Configuration ==
+===Location of Backups ===
 <pre>
+/mnt/npg-daily-current
+/mnt/npg-daily/xx/
 </pre>
-Any valid user can log into lentil from any machine on the Internet.
+All backup related scripts are:
+  /etc/auto.npg-daily
+  /usr/local/bin/rsync_backup.py
+  /etc/cron.daily/0rsync_backup
+  /usr/sbin/vgcfgbackup
+  /etc/rsync-backup.conf
-== Backup Configuration ==
+== SNMP Configuration ==
-=== /etc/rsync-backup.conf ===
+  /etc/snmp/snmpd.conf
-<pre># Backups are 'pull' only.  Too bad there isn't a better way to enforce this.
+  Copied from [[Pepper]].
-read only       = yes
+== Smartd Configuration ==
+The configuration file is at /etc/smartd.conf.  The smartd.conf does a silent check, which only emails reports if the SMART health status comes back as failed.  This smartd.conf will look different from alot of the other computers because it doesn't have a RAID card installed, so each disk is mounted seperately for backups.
-# Oh for the ability to retain CAP_DAC_READ_SEARCH, and no other.
-#uid            = root
-# XXX There seems to be an obscure bug with pam_ldap and rsync whereby
-# getpwnam(3) segfaults when (and only when) archiving /etc.  Using a numeric
-# uid avoids this bug.  Only verified on Fedora Core 2.
-uid             = 0
-# There's not much point in putting the superuser in a chroot jail
-# use chroot    = yes
-# This isn't really an effective "lock" per se, since the value is per-module,
-# but there really ought never be more than one, and it would at least
-# ensure serialized backups.
-max connections = 1
-[usr_local]
-        path    = /usr/local
-        comment = unpackaged software
-[opt]
+[[SMARTD]] Smartd setup and configuration
-        path    = /opt
+== rc.local Configuration ==
-        comment = unpackaged software
+This script is modified to run commands when the system is done powering on.
-[etc]
+This will send the boot.log to npg-admins everytime the pc is started.
-        path    = /etc
+  mail -s "$HOSTNAME Started, Here is the boot.log" npg-admins@physics.unh.edu < /var/log/boot.log
-        comment = conf files
+== If Lentil isn't sending e-mails ==
+Sometimes after a reboot Lentil won't send its regular e-mail reports. To fix this you simply need to restart sendmail. Be aware that it has saved all of those messages it didn't send, and once sendmail is working you'll get all of them at once.
-[var]
+== Wake On LAN ==
-        path    = /var
+This is used so we can shutdown the server and remotely turn it back on.
-        comment = user and system storage
+Wake On Lan Command:
-</pre>
+  sudo ether-wake 00:1e:4f:9b:13:90
-== SNMP Configuration ==
-=== /etc/snmp/snmpd.conf ===
-Copied from [[Pepper]].
 == Fixes ==
 *Kernel Crash Fix (2/24/2009)
-**http://nuclear.unh.edu/wiki/index.php?title=Hardware_Issues_History#6.2F2007
+**[[Hardware Issues History]]
+*Hard Drive Enclosure Replacement (12/19/2009)
+**[[Hardware Issues History]]
+'''Important Note:'''
+  If this appears while booting:
+    request_module: runaway loop modprobe binfmt-464c
+  This is an indication that a drive (in the supermicro hot swap bay) is plugged in that
+  can't be mounted, like a drive with a software raid setup on it, so just pull the drive
+  and reboot and it should boot properly.

Difference between revisions of "Lentil"

Latest revision as of 15:11, 12 March 2015

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