BAFM – Page 2 – The rants of a not-so-crazy-sysadmin and his life

diskinfo

July 27, 2014July 27, 2014 Christian Leave a comment

Get a list of all disks and show the serial numbers

#!/bin/bash

if [ ! -x /usr/sbin/hdparm ] ; then
  echo "Missing hdparm"
  exit 1
fi

for disk in /dev/sd?; do
  echo "$disk: `hdparm -I $disk | grep "Serial Number:" | awk '{ print $3 }'`"
done

#!/bin/bash

if [ ! -x /usr/sbin/hdparm ] ; then

echo "Missing hdparm"

exit 1

for disk in /dev/sd?; do

echo "$disk: `hdparm -I $disk | grep "Serial Number:" | awk '{ print $3 }'`"

done

idle3 wrapper

July 27, 2014July 27, 2014 Christian Leave a comment

Another wrapper (like mdstat), that’ll look through my Western Digital disks and fix any disk not having the head parking timeout set to a configured value.

#!/bin/bash

FIRMWARE_TIMEOUT_SH=138

if [ ! -x /usr/sbin/idle3ctl ] ; then
  echo "idle3-tools is missing."
  exit 1
fi

for disk in /dev/sd?; do
  # idle time should be set to: 138 (300s)
  # 138-128=10
  # 10x30=300 seconds
  FIRMWARE_TIMEOUT_IS="$( /usr/sbin/idle3ctl -g $disk  | awk '{ print $5 }' )"

  if [ "$FIRMWARE_TIMEOUT_IS" -ne "$FIRMWARE_TIMEOUT_SH" ]; then
    /usr/sbin/idle3ctl -s$FIRMWARE_TIMEOUT_SH $disk
  fi
done

#!/bin/bash

FIRMWARE_TIMEOUT_SH=138

if [ ! -x /usr/sbin/idle3ctl ] ; then

echo "idle3-tools is missing."

exit 1

for disk in /dev/sd?; do

# idle time should be set to: 138 (300s)

# 138-128=10

# 10x30=300 seconds

FIRMWARE_TIMEOUT_IS="$( /usr/sbin/idle3ctl -g $disk | awk '{ print $5 }' )"

if [ "$FIRMWARE_TIMEOUT_IS" -ne "$FIRMWARE_TIMEOUT_SH" ]; then

/usr/sbin/idle3ctl -s$FIRMWARE_TIMEOUT_SH $disk

done

XBMC thumbnail generation

July 19, 2014July 27, 2014 Christian Leave a comment

Well, I have a few movies and series that ain’t represented in TMDB/TVDB. So here’s a little script, that will parse over any video files, check if a thumb file is already present, and if not generate one using ffmpegthumbnailer…

#!/bin/bash

find /srv/smb/tv/ -name "*.wmv" -o -name "*.avi" -o -name "*.mp4" \
  -o -name "*.mkv" | while read file; do
  if [ ! -f "${file%.*}-thumb.jpg" ] ; then
    fmpegthumbnailer -i $file -o "${file%.*}-thumb.jpg" -s 0 &>/dev/null
  fi
done

#!/bin/bash

find /srv/smb/tv/ -name "*.wmv" -o -name "*.avi" -o -name "*.mp4" \

-o -name "*.mkv" | while read file; do

if [ ! -f "${file%.*}-thumb.jpg" ] ; then

fmpegthumbnailer -i $file -o "${file%.*}-thumb.jpg" -s 0 &>/dev/null

done

Linux NAS optimizations

July 9, 2014July 10, 2014 Christian Leave a comment

Well, I recently had to flatten my archive NAS (well only the OS part … *wheeeh*). Since I didn’t have the chance to backup the old settings I had to do everything from scratch … And this time I decided, I wasn’t doing a script but rather the proper way.

I spent a while reading through the Internetz about the various settings until I stumbled upon a Frauenhofer Wiki entry. From there I ended up writing those udev-rules and the sysctl configs…

# Settings from http://www.fhgfs.com/wiki/StorageServerTuning

# Set an appropriate IO scheduler for file servers.
KERNEL=="sd[a-z]", ATTR{queue/scheduler}="deadline"
KERNEL=="sd[a-i][a-z]", ATTR{queue/scheduler}="deadline"

# Give the IO scheduler more flexibility by increasing the number of
# schedulable requests.
KERNEL=="sd[a-z]", ATTR{queue/nr_requests}="4096"
KERNEL=="sd[a-i][a-z]", ATTR{queue/nr_requests}="4096"

# To improve throughput for sequential reads, increase the maximum amount of
# read-ahead data. The actual amount of read-ahead is adaptive, so using a
#  high value here won't harm performance for small random access.
KERNEL=="sd[a-z]", ATTR{queue/read_ahead_kb}="73728"
KERNEL=="sd[a-i][a-z]", ATTR{queue/read_ahead_kb}="73728"
KERNEL=="sd[a-z]", RUN+="/sbin/blockdev --setra 73728 /dev/%n"
KERNEL=="sd[a-i][a-z]", RUN+="/sbin/blockdev --setra 73728 /dev/%n"

SUBSYSTEM=="block", KERNEL=="md[0-9]*", RUN+="/sbin/blockdev --setra 663552 /dev/%n"
SUBSYSTEM=="block", KERNEL=="md[0-9]*", ATTR{md/stripe_cache_size}="9216"

# Optimal performance for hardware RAID systems often depends on large IOs
# being sent to the device in a single large operation. Please refer to your
# hardware storage vendor for the corresponding optimal size of
# /sys/block/sdX/max_sectors_kb.
# It is typically good if this size can be increased to at least match your
# RAID stripe set size (i.e. chunk_size x number_of_disks):
KERNEL=="sd[a-z]", ATTR{queue/max_sectors_kb}="512"
KERNEL=="sd[a-i][a-z]", ATTR{queue/max_sectors_kb}="512"

KERNEL=="sd[a-z]", ATTR{device/queue_depth}="1"
KERNEL=="sd[a-i][a-z]", ATTR{device/queue_depth}="1"

# Settings from http://www.fhgfs.com/wiki/StorageServerTuning

# Set an appropriate IO scheduler for file servers.

KERNEL=="sd[a-z]", ATTR{queue/scheduler}="deadline"

KERNEL=="sd[a-i][a-z]", ATTR{queue/scheduler}="deadline"

# Give the IO scheduler more flexibility by increasing the number of

# schedulable requests.

KERNEL=="sd[a-z]", ATTR{queue/nr_requests}="4096"

KERNEL=="sd[a-i][a-z]", ATTR{queue/nr_requests}="4096"

# To improve throughput for sequential reads, increase the maximum amount of

# read-ahead data. The actual amount of read-ahead is adaptive, so using a

# high value here won't harm performance for small random access.

KERNEL=="sd[a-z]", ATTR{queue/read_ahead_kb}="73728"

KERNEL=="sd[a-i][a-z]", ATTR{queue/read_ahead_kb}="73728"

KERNEL=="sd[a-z]", RUN+="/sbin/blockdev --setra 73728 /dev/%n"

KERNEL=="sd[a-i][a-z]", RUN+="/sbin/blockdev --setra 73728 /dev/%n"

SUBSYSTEM=="block", KERNEL=="md[0-9]*", RUN+="/sbin/blockdev --setra 663552 /dev/%n"

SUBSYSTEM=="block", KERNEL=="md[0-9]*", ATTR{md/stripe_cache_size}="9216"

# Optimal performance for hardware RAID systems often depends on large IOs

# being sent to the device in a single large operation. Please refer to your

# hardware storage vendor for the corresponding optimal size of

# /sys/block/sdX/max_sectors_kb.

# It is typically good if this size can be increased to at least match your

# RAID stripe set size (i.e. chunk_size x number_of_disks):

KERNEL=="sd[a-z]", ATTR{queue/max_sectors_kb}="512"

KERNEL=="sd[a-i][a-z]", ATTR{queue/max_sectors_kb}="512"

KERNEL=="sd[a-z]", ATTR{device/queue_depth}="1"

KERNEL=="sd[a-i][a-z]", ATTR{device/queue_depth}="1"

# Settings taken from http://www.fhgfs.com/wiki/StorageServerTuning

# To avoid long IO stalls (latencies) for write cache flushing in a production
# environment with very different workloads, you will typically want to limit
# the kernel dirty (write) cache size.

vm.dirty_background_ratio = 5
vm.dirty_ratio = 10

# Assigning slightly higher priority to inode caching helps to avoid disk seeks
# for inode loading
vm.vfs_cache_pressure = 50

# Buffering of file system data requires frequent memory allocation. Raising the
# amount of reserved kernel memory will enable faster and more reliable memory
# allocation in critical situations. Raise the corresponding value to 64MB if
# you have less than 8GB of memory, otherwise raise it to at least 256MB
vm.min_free_kbytes = 262144

# Settings taken from http://www.fhgfs.com/wiki/StorageServerTuning

# To avoid long IO stalls (latencies) for write cache flushing in a production

# environment with very different workloads, you will typically want to limit

# the kernel dirty (write) cache size.

vm.dirty_background_ratio = 5

vm.dirty_ratio = 10

# Assigning slightly higher priority to inode caching helps to avoid disk seeks

# for inode loading

vm.vfs_cache_pressure = 50

# Buffering of file system data requires frequent memory allocation. Raising the

# amount of reserved kernel memory will enable faster and more reliable memory

# allocation in critical situations. Raise the corresponding value to 64MB if

# you have less than 8GB of memory, otherwise raise it to at least 256MB

vm.min_free_kbytes = 262144

For now, I’m rather pleased with the results …

root:(charon.ka.heimdaheim.de) PWD:/
Wed Jul 09, 15:02:08 [0] > mdadm --detail /dev/md127
/dev/md127:
        Version : 1.2
  Creation Time : Sat Jan 26 18:35:19 2013
     Raid Level : raid5
     Array Size : 15626121216 (14902.23 GiB 16001.15 GB)
  Used Dev Size : 1953265152 (1862.78 GiB 2000.14 GB)
   Raid Devices : 9
  Total Devices : 10
    Persistence : Superblock is persistent

    Update Time : Wed Jul  9 15:03:28 2014
          State : clean
 Active Devices : 9
Working Devices : 10
 Failed Devices : 0
  Spare Devices : 1

         Layout : left-symmetric
     Chunk Size : 512K

           Name : charon:aggr1  (local to host charon)
           UUID : 6d11820f:04847070:2725c434:9ee39718
         Events : 11186

    Number   Major   Minor   RaidDevice State
       0       8      129        0      active sync   /dev/sdi1
       1       8       33        1      active sync   /dev/sdc1
       2       8       49        2      active sync   /dev/sdd1
       4       8       65        3      active sync   /dev/sde1
       5       8       17        4      active sync   /dev/sdb1
      10       8       97        5      active sync   /dev/sdg1
       9       8       81        6      active sync   /dev/sdf1
       8       8      161        7      active sync   /dev/sdk1
       7       8      145        8      active sync   /dev/sdj1

       6       8      113        -      spare   /dev/sdh1

root:(charon.ka.heimdaheim.de) PWD:/

Wed Jul 09, 15:02:08 [0] > mdadm --detail /dev/md127

/dev/md127:

Version : 1.2

Creation Time : Sat Jan 26 18:35:19 2013

Raid Level : raid5

Array Size : 15626121216 (14902.23 GiB 16001.15 GB)

Used Dev Size : 1953265152 (1862.78 GiB 2000.14 GB)

Raid Devices : 9

Total Devices : 10

Persistence : Superblock is persistent

Update Time : Wed Jul 9 15:03:28 2014

State : clean

Active Devices : 9

Working Devices : 10

Failed Devices : 0

Spare Devices : 1

Layout : left-symmetric

Chunk Size : 512K

Name : charon:aggr1 (local to host charon)

UUID : 6d11820f:04847070:2725c434:9ee39718

Events : 11186

Number Major Minor RaidDevice State

0 8 129 0 active sync /dev/sdi1

1 8 33 1 active sync /dev/sdc1

2 8 49 2 active sync /dev/sdd1

4 8 65 3 active sync /dev/sde1

5 8 17 4 active sync /dev/sdb1

10 8 97 5 active sync /dev/sdg1

9 8 81 6 active sync /dev/sdf1

8 8 161 7 active sync /dev/sdk1

7 8 145 8 active sync /dev/sdj1

6 8 113 - spare /dev/sdh1

And here’s the dd output:

root:(charon.ka.heimdaheim.de) PWD:/
Wed Jul 09, 14:57:32 [0] > dd if=/dev/zero of=/srv/smb/tmp bs=1G count=100 \
   oflag=direct
100+0 records in
100+0 records out
107374182400 bytes (107 GB) copied, 257.341 s, 417 MB/s

root:(charon.ka.heimdaheim.de) PWD:/

Wed Jul 09, 14:57:32 [0] > dd if=/dev/zero of=/srv/smb/tmp bs=1G count=100 \

oflag=direct

100+0 records in

100+0 records out

107374182400 bytes (107 GB) copied, 257.341 s, 417 MB/s

Nexus 5000: Configure CEST

June 24, 2014June 24, 2014 Christian Leave a comment

Since I’m living and working in Germany, most of my hardware is using timezone configuration for CEST (or Europe/Berlin).

This here is the simple configuration for our Nexus 5000’s:

conf t
clock timezone CET 1 0
clock summer-time CEST 5 Sun Mar 02:00 5 Sun Oct 03:00 60
exit
copy running-config startup-config

conf t

clock timezone CET 1 0

clock summer-time CEST 5 Sun Mar 02:00 5 Sun Oct 03:00 60

exit

copy running-config startup-config

Migrating from XenServer to ESXi

February 13, 2014February 14, 2014 Christian 3 Comments

For the past two months we’ve been trying to migrate a bunch (90 or so) VMs from XenServer to ESXi … However for some reason on some of them, the Converter Service would crash.

VMware Converter crashing due to rsintcor32.dll

Up till Monday, I had no idea why. I decided to look into the error once again, and this time decided just to Google the failing module… And guess what ? Out came this Citrix forum post regarding the failing module. So, after knowing that rsintcor32.dll belongs to the Citrix System Monitoring Agent service (well, I could have guessed that from the DLLs path :P) I decided to simply stop the service.

And now, we can migrate the remaining VMs to ESXi and get rid of XenServer!

NetScaler: Generate a simple usage statistic per Vserver

November 21, 2013November 21, 2013 Christian Leave a comment

One of my co-workers recently approached me, that he needed a simple shell script which would generate a simple report about a Vserver’s current connections. After ironing out a few things with him (he had the intention of it being on a CIFS share on our file-server – which I changed to a simple HTML page) I went to work.

Out came two scripts. One is the collection instance, and the other is the processing instance. First the collection script runs, finds the current HA master node and then collects the Vserver’s current connections. After that script has dumped the information (date, time, current connections) into a file, the processing script will go and create a simple HTML page that’ll show exactly those informations.

You’ll also need to have configured the public key authentification on both HA nodes, since entering a password in combination with scripting is a bit lame.

#!/bin/bash

IDENTITY_FILE="/root/.ssh/netscaler"
NS_USER="nsroot"
NS_HOST="$1"
NS_VSERVER="$2"

if [ -z "$2" ] ; then
	echo "Usage: ns-gather-connections.sh <IP/HOSTNAME> <VSERVER_NAME>"
	echo ""
	echo "    o IP/HOSTNAME     -  IP or Hostname of the NetScaler"
	echo "    o VSERVER_NAME    -  Name of the NetScaler vServer"
	echo ""
	exit 1
fi

ns_ssh() {
	COMMANDS="$@"
	ssh -i $IDENTITY_FILE $NS_USER@$NS_HOST $COMMANDS
}

# Get HA information from the NetScaler and check if the current IP is the Master
NS_NODE_STATUS="$( ns_ssh sh ha node | egrep -A2 "IP:.*$NS_HOST" | grep Master | \
	awk '{ print $3 }' )"

if [ "$NS_NODE_STATUS" != "Primary" ] ; then
	# Search for the Primary node
	NS_MASTER_NODE="$( ns_ssh sh ha node | egrep -B2 "Master State: Primary" | \
		grep "IP: " | awk '{ print $2 }' )"
	NS_HOST=$NS_MASTER_NODE

elif [ "$NS_NODE_STATUS" == "Primary" ] ; then
	NS_MASTER_NODE="$NS_HOST"
	NS_HOST=$NS_MASTER_NODE
fi

# Check the connection table
NS_CONNTABLE="$( ns_ssh "sh ns connectiontable \"VSVRNAME = ${NS_VSERVER}\" -detail LINK" | grep 'ESTABLISHED' | wc -l )"

echo "`date '+%F_%R'`;$NS_CONNTABLE" >> /srv/www/${NS_VSERVER}_conntable.log

#!/bin/bash

IDENTITY_FILE="/root/.ssh/netscaler"

NS_USER="nsroot"

NS_HOST="$1"

NS_VSERVER="$2"

if [ -z "$2" ] ; then

echo "Usage: ns-gather-connections.sh <IP/HOSTNAME> <VSERVER_NAME>"

echo ""

echo " o IP/HOSTNAME - IP or Hostname of the NetScaler"

echo " o VSERVER_NAME - Name of the NetScaler vServer"

echo ""

exit 1

ns_ssh() {

COMMANDS="$@"

ssh -i $IDENTITY_FILE $NS_USER@$NS_HOST $COMMANDS

}

# Get HA information from the NetScaler and check if the current IP is the Master

NS_NODE_STATUS="$( ns_ssh sh ha node | egrep -A2 "IP:.*$NS_HOST" | grep Master | \

awk '{ print $3 }' )"

if [ "$NS_NODE_STATUS" != "Primary" ] ; then

# Search for the Primary node

NS_MASTER_NODE="$( ns_ssh sh ha node | egrep -B2 "Master State: Primary" | \

grep "IP: " | awk '{ print $2 }' )"

NS_HOST=$NS_MASTER_NODE

elif [ "$NS_NODE_STATUS" == "Primary" ] ; then

NS_MASTER_NODE="$NS_HOST"

NS_HOST=$NS_MASTER_NODE

# Check the connection table

NS_CONNTABLE="$( ns_ssh "sh ns connectiontable \"VSVRNAME = ${NS_VSERVER}\" -detail LINK" | grep 'ESTABLISHED' | wc -l )"

echo "`date '+%F_%R'`;$NS_CONNTABLE" >> /srv/www/${NS_VSERVER}_conntable.log

#!/bin/bash

NS_VSERVER="$1"
HTML_FILE="/srv/www/htdocs/${NS_VSERVER}.html"

cat > $HTML_FILE << EOF
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
	"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<title>$NS_VSERVER - Anzahl Clients nach Datum</title>
	<style>
	.ns {
		margin:0px;padding:0px;
		width:100%;
		border:1px solid #000000;
		-moz-border-radius-bottomleft:0px;
		-webkit-border-bottom-left-radius:0px;
		border-bottom-left-radius:0px;
		-moz-border-radius-bottomright:0px;
		-webkit-border-bottom-right-radius:0px;
		border-bottom-right-radius:0px;
		-moz-border-radius-topright:0px;
		-webkit-border-top-right-radius:0px;
		border-top-right-radius:0px;
		-moz-border-radius-topleft:0px;
		-webkit-border-top-left-radius:0px;
		border-top-left-radius:0px;
	}.ns table{
		border-collapse: collapse;
		border-spacing: 0;
		width:100%;
		height:100%;
		margin:0px;padding:0px;
	}.ns th{
		font-size:14px;
		font-family:Verdana;
		font-weight:bold;
		border:1px solid #000000;
		border-width:0px 1px 1px 0px;
		text-align:left;
		padding:7px;
	}.ns tr:last-child td:last-child {
		-moz-border-radius-bottomright:0px;
		-webkit-border-bottom-right-radius:0px;
		border-bottom-right-radius:0px;
	}
	.ns table tr:first-child td:first-child {
		-moz-border-radius-topleft:0px;
		-webkit-border-top-left-radius:0px;
		border-top-left-radius:0px;
	}
	.ns table tr:first-child td:last-child {
		-moz-border-radius-topright:0px;
		-webkit-border-top-right-radius:0px;
		border-top-right-radius:0px;
	}.ns tr:last-child td:first-child{
		-moz-border-radius-bottomleft:0px;
		-webkit-border-bottom-left-radius:0px;
		border-bottom-left-radius:0px;
	}.ns tr:hover td{

	}
	.ns tr:nth-child(odd){ background-color:#aad4ff; }
	.ns tr:nth-child(even)    { background-color:#ffffff; }.ns td{
		vertical-align:middle;
		border:1px solid #000000;
		border-width:0px 1px 1px 0px;
		text-align:left;
		padding:7px;
		font-size:14px;
		font-family:Verdana;
		font-weight:normal;
		color:#000000;
	}.ns tr:last-child td{
		border-width:0px 1px 0px 0px;
	}.ns tr td:last-child{
		border-width:0px 0px 1px 0px;
	}.ns tr:last-child td:last-child{
		border-width:0px 0px 0px 0px;
	}
	.ns tr:first-child td{
			background:-o-linear-gradient(bottom, #005fbf 5%, #003f7f 100%);	background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #005fbf), color-stop(1, #003f7f) );
		background:-moz-linear-gradient( center top, #005fbf 5%, #003f7f 100% );
		filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#005fbf", endColorstr="#003f7f");	background: -o-linear-gradient(top,#005fbf,003f7f);
		background-color:#005fbf;
		border:0px solid #000000;
		text-align:center;
		border-width:0px 0px 1px 1px;
		font-size:14px;
		font-family:Verdana;
		font-weight:bold;
		color:#ffffff;
	}
	.ns tr:first-child:hover td{
		background:-o-linear-gradient(bottom, #005fbf 5%, #003f7f 100%);	background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #005fbf), color-stop(1, #003f7f) );
		background:-moz-linear-gradient( center top, #005fbf 5%, #003f7f 100% );
		filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#005fbf", endColorstr="#003f7f");	background: -o-linear-gradient(top,#005fbf,003f7f);
		background-color:#005fbf;
	}
	.ns tr:first-child td:first-child{
		border-width:0px 0px 1px 0px;
	}
	.ns tr:first-child td:last-child{
		border-width:0px 0px 1px 1px;
	}
	</style>
</head>
<body>

<h3>NetScaler Vserver $NS_VSERVER - sortiert nach Datum</h1>

<div class="ns">
	<table border="1">
		<tr>
			<th>Datum</th>
			<th>Zeit</th>
			<th>Anzahl Clients</th>
		</tr>
EOF

for line in $( tac /srv/www/${NS_VSERVER}_conntable.log ); do
	DATE="$( echo $line | cut -d\; -f1 | cut -d_ -f1 )"
	TIME="$( echo $line | cut -d\; -f1 | cut -d_ -f2 )"
	CONNECTIONS="$( echo $line | cut -d\; -f2 )"

	cat >> $HTML_FILE << EOF
		<tr>
			<td>$DATE</td>
			<td>$TIME</td>
			<td>$CONNECTIONS</td>
		</tr>
EOF
done

cat >> $HTML_FILE << EOF
</div>
</body>
</html>
EOF

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#!/bin/bash

NS_VSERVER="$1"

HTML_FILE="/srv/www/htdocs/${NS_VSERVER}.html"

cat > $HTML_FILE << EOF

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

"http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>$NS_VSERVER - Anzahl Clients nach Datum</title>

<style>

.ns {

margin:0px;padding:0px;

width:100%;

border:1px solid #000000;

-moz-border-radius-bottomleft:0px;

-webkit-border-bottom-left-radius:0px;

border-bottom-left-radius:0px;

-moz-border-radius-bottomright:0px;

-webkit-border-bottom-right-radius:0px;

border-bottom-right-radius:0px;

-moz-border-radius-topright:0px;

-webkit-border-top-right-radius:0px;

border-top-right-radius:0px;

-moz-border-radius-topleft:0px;

-webkit-border-top-left-radius:0px;

border-top-left-radius:0px;

}.ns table{

border-collapse: collapse;

border-spacing: 0;

width:100%;

height:100%;

margin:0px;padding:0px;

}.ns th{

font-size:14px;

font-family:Verdana;

font-weight:bold;

border:1px solid #000000;

border-width:0px 1px 1px 0px;

text-align:left;

padding:7px;

}.ns tr:last-child td:last-child {

-moz-border-radius-bottomright:0px;

-webkit-border-bottom-right-radius:0px;

border-bottom-right-radius:0px;

}

.ns table tr:first-child td:first-child {

-moz-border-radius-topleft:0px;

-webkit-border-top-left-radius:0px;

border-top-left-radius:0px;

}

.ns table tr:first-child td:last-child {

-moz-border-radius-topright:0px;

-webkit-border-top-right-radius:0px;

border-top-right-radius:0px;

}.ns tr:last-child td:first-child{

-moz-border-radius-bottomleft:0px;

-webkit-border-bottom-left-radius:0px;

border-bottom-left-radius:0px;

}.ns tr:hover td{

}

.ns tr:nth-child(odd){ background-color:#aad4ff; }

.ns tr:nth-child(even) { background-color:#ffffff; }.ns td{

vertical-align:middle;

border:1px solid #000000;

border-width:0px 1px 1px 0px;

text-align:left;

padding:7px;

font-size:14px;

font-family:Verdana;

font-weight:normal;

color:#000000;

}.ns tr:last-child td{

border-width:0px 1px 0px 0px;

}.ns tr td:last-child{

border-width:0px 0px 1px 0px;

}.ns tr:last-child td:last-child{

border-width:0px 0px 0px 0px;

}

.ns tr:first-child td{

background:-o-linear-gradient(bottom, #005fbf 5%, #003f7f 100%); background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #005fbf), color-stop(1, #003f7f) );

background:-moz-linear-gradient( center top, #005fbf 5%, #003f7f 100% );

filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#005fbf", endColorstr="#003f7f"); background: -o-linear-gradient(top,#005fbf,003f7f);

background-color:#005fbf;

border:0px solid #000000;

text-align:center;

border-width:0px 0px 1px 1px;

font-size:14px;

font-family:Verdana;

font-weight:bold;

color:#ffffff;

}

.ns tr:first-child:hover td{

background:-o-linear-gradient(bottom, #005fbf 5%, #003f7f 100%); background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #005fbf), color-stop(1, #003f7f) );

background:-moz-linear-gradient( center top, #005fbf 5%, #003f7f 100% );

filter:progid:DXImageTransform.Microsoft.gradient(startColorstr="#005fbf", endColorstr="#003f7f"); background: -o-linear-gradient(top,#005fbf,003f7f);

background-color:#005fbf;

}

.ns tr:first-child td:first-child{

border-width:0px 0px 1px 0px;

}

.ns tr:first-child td:last-child{

border-width:0px 0px 1px 1px;

}

</style>

</head>

<body>

<h3>NetScaler Vserver $NS_VSERVER - sortiert nach Datum</h1>

<tr>

<th>Datum</th>

<th>Anzahl Clients</th>

</tr>

EOF

for line in $( tac /srv/www/${NS_VSERVER}_conntable.log ); do

DATE="$( echo $line | cut -d\; -f1 | cut -d_ -f1 )"

TIME="$( echo $line | cut -d\; -f1 | cut -d_ -f2 )"

CONNECTIONS="$( echo $line | cut -d\; -f2 )"

cat >> $HTML_FILE << EOF

<tr>

<td>$CONNECTIONS</td>

</tr>

EOF

done

cat >> $HTML_FILE << EOF

</div>

</body>

</html>

EOF

VMware templates: post-processing for SUSE Linux Enterprise Server and openSUSE

November 21, 2013November 21, 2013 Christian Leave a comment

Well, I’ve been fiddling around with SLES and openSUSE VMware templates. I know it’s a stupid idea when you have a PXE server from which you could install this in a matter of minutes (seriously the SLES PXE installation takes about 5 minutes).

However, when dealing with DMZ’s (yeah, they exist!) you usually don’t have any PXE servers there. So I decided to go with simple VMware templates (like we do with Windows already), but had to iron out a few kinks.

There’s no way to run a set of scripts after the deployment scripts from VMware have been run
The hostname isn’t changed everywhere (/etc/postfix/main.cf for example)

So of I went and wrote a short (70 line ..) init script, which will do exactly that.

#!/bin/sh
#
# /etc/init.d/template-deploy
#
### BEGIN INIT INFO
# Provides:             template-deploy
# Required-Start:       $sshd
# Should-Start:
# Required-Stop:        $sshd
# Should-Stop:
# Default-Start:        2 3 5
# Default-Stop:
# Short-Description:    Makes the final adjustments when deployed a template
# Description:          VMware has a few kinks when deploying a linux template.
#                       This init script will handle those kinks and
#                       incorporate the necessary changes to the final system
#                       after the VMware customizations are done.
### END INIT INFO

# Source LSB init functions
. /etc/rc.status

rc_reset

LOGFILES="/var/log/messages* /var/log/mail* /var/log/zypper.log /var/log/localmessages /var/log/warn /var/log/NetworkManager /var/log/zypp/history /var/log/clamd.log /var/log/cksquid.log /var/log/ftp-proxy.log* /var/log/apache2/*_log /var/log/squid/*.log /var/log/pbl.log"

case "$1" in
	start)
		# Read /etc/HOSTNAME and check it against /etc/template
		if [ -f /etc/HOSTNAME -a -f /etc/template ] ; then
			SYS_HOSTNAME="`cat /etc/HOSTNAME`"
			TPL_HOSTNAME="`cat /etc/template`"

			# Only if the hostname isn't like the template name
			# the script will actually run.
			if [ "$SYS_HOSTNAME" != "$TPL_HOSTNAME" ] ; then
				sed -i "s/$TPL_HOSTNAME/$SYS_HOSTNAME/g" \
					/etc/postfix/main.cf /etc/hosts \
					/etc/HOSTNAME

					bash /var/adm/autoinstall/scripts/configure_users.sh

					# Stop services for logfile deletion.
					systemctl stop postfix
					systemctl stop syslog

					# Remove log files
					for file in $LOGFILES; do
						rm -f $file
					done

					rm -f /var/log/YaST2/*
					rm -rf /var/log/vmware-imc

					# Remove the init script
					chkconfig -d template-deploy
					rm -f /etc/template
					rm -f /etc/init.d/template-deploy
				fi
			fi
			rc_status -v
			;;
        *)
			;;
esac
rc_exit

#!/bin/sh

# /etc/init.d/template-deploy

### BEGIN INIT INFO

# Provides: template-deploy

# Required-Start: $sshd

# Should-Start:

# Required-Stop: $sshd

# Should-Stop:

# Default-Start: 2 3 5

# Default-Stop:

# Short-Description: Makes the final adjustments when deployed a template

# Description: VMware has a few kinks when deploying a linux template.

# This init script will handle those kinks and

# incorporate the necessary changes to the final system

# after the VMware customizations are done.

### END INIT INFO

# Source LSB init functions

. /etc/rc.status

rc_reset

LOGFILES="/var/log/messages* /var/log/mail* /var/log/zypper.log /var/log/localmessages /var/log/warn /var/log/NetworkManager /var/log/zypp/history /var/log/clamd.log /var/log/cksquid.log /var/log/ftp-proxy.log* /var/log/apache2/*_log /var/log/squid/*.log /var/log/pbl.log"

case "$1" in

start)

# Read /etc/HOSTNAME and check it against /etc/template

if [ -f /etc/HOSTNAME -a -f /etc/template ] ; then

SYS_HOSTNAME="`cat /etc/HOSTNAME`"

TPL_HOSTNAME="`cat /etc/template`"

# Only if the hostname isn't like the template name

# the script will actually run.

if [ "$SYS_HOSTNAME" != "$TPL_HOSTNAME" ] ; then

sed -i "s/$TPL_HOSTNAME/$SYS_HOSTNAME/g" \

/etc/postfix/main.cf /etc/hosts \

/etc/HOSTNAME

bash /var/adm/autoinstall/scripts/configure_users.sh

# Stop services for logfile deletion.

systemctl stop postfix

systemctl stop syslog

# Remove log files

for file in $LOGFILES; do

rm -f $file

done

rm -f /var/log/YaST2/*

rm -rf /var/log/vmware-imc

# Remove the init script

chkconfig -d template-deploy

rm -f /etc/template

rm -f /etc/init.d/template-deploy

rc_status -v

;;

esac

rc_exit

You’ll also need to create a file (/etc/template), which’ll hold the template’s hostname and will be used for the comparison if VMware’s post-processing is already finished.

MDS9100 firmware updates – generating copy commands

October 20, 2013October 20, 2013 Christian Leave a comment

Well, I went to work today … yeah, I know it’s Sunday right ? I ended up updating two MDS9148 switches and I didn’t want to figure out everything all over again. So I put the system image and kickstart onto one of our FTP servers and ran a short bash loop on it:

root:(ftp.daheim.heimdaheim.de) PWD:~
Sun Oct 20, 08:57:24 [0] > for file in `ls /srv/ftp/firmware/mds9148/*6.2.3*`; do
echo "copy ftp://10.0.0.55/`echo $file | sed 's,/srv/ftp/,,'` bootflash:/`echo $file | sed 's,/srv/ftp/firmware/mds9148/,,'`"
done

root:(ftp.daheim.heimdaheim.de) PWD:~

Sun Oct 20, 08:57:24 [0] > for file in `ls /srv/ftp/firmware/mds9148/*6.2.3*`; do

echo "copy ftp://10.0.0.55/`echo $file | sed 's,/srv/ftp/,,'` bootflash:/`echo $file | sed 's,/srv/ftp/firmware/mds9148/,,'`"

done

Now that’ll generate me two lines, which in turn I can use on the MDS’n:

copy ftp://10.0.0.55/firmware/mds9148/m9100-s3ek9-kickstart-mz.6.2.3.bin bootflash:/m9100-s3ek9-kickstart-mz.6.2.3.bin
copy ftp://10.0.0.55/firmware/mds9148/m9100-s3ek9-mz.6.2.3.bin bootflash:/m9100-s3ek9-mz.6.2.3.bin

1 2	copy ftp://10.0.0.55/firmware/mds9148/m9100-s3ek9-kickstart-mz.6.2.3.bin bootflash:/m9100-s3ek9-kickstart-mz.6.2.3.bin copy ftp://10.0.0.55/firmware/mds9148/m9100-s3ek9-mz.6.2.3.bin bootflash:/m9100-s3ek9-mz.6.2.3.bin