Dell Ubuntu rfkill

By Carl | Published: June 28, 2011

Apparently the Fn-F7 option on the Lattitude 13 and other models causes breakage with Ubuntu 11.04 putting blocks on wireless.

So if you’re getting:

tail -f /var/log/syslog
Jun 28 11:58:43 latitude13 kernel: [42125.406612] iwlagn 0000:0c:00.0: RF_KILL bit toggled to enable radio.
Jun 28 11:58:45 latitude13 kernel: [42127.020863] iwlagn 0000:0c:00.0: RF_KILL bit toggled to disable radio.

You’ll be pleased to know if you can see the card:

lspci -nnk
0c:00.0 Network controller [0280]: Intel Corporation WiFi Link 5100 [8086:4232]
Subsystem: Intel Corporation WiFi Link 5100 AGN [8086:1321]
Kernel driver in use: iwlagn
Kernel modules: iwlagn

You can check the rf status:

rfkill list
0: dell-wifi: Wireless LAN
Soft blocked: yes
Hard blocked: no
1: dell-bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
2: dell-wwan: Wireless WAN
Soft blocked: yes
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes

Then unblock the spanner:

sudo rfkill unblock 3

Start back up Wireless:

sudo ifconfig wlan0 up

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Zabbix for XenServer (work in progress)

By Carl | Published: October 30, 2010

Using “xe host-data-source-list” and “xe host-data-source-query” I made some basic UserParameter for xenserver below.

UserParameter=xe.vmcountup,sudo /opt/xensource/bin/xe vm-list | grep running | wc -l
UserParameter=xe.vmcountdown,sudo /opt/xensource/bin/xe vm-list | grep halted | wc -l
UserParameter=xe.memory_total_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=memory_total_kib
UserParameter=xe.memory_free_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=memory_free_kib
UserParameter=xe.xapi_memory_usage_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_memory_usage_kib
UserParameter=xe.xapi_free_memory_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_free_memory_kib
UserParameter=xe.xapi_live_memory_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_live_memory_kib
UserParameter=xe.xapi_allocation_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_allocation_kib
UserParameter=xe.cpu3,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu3
UserParameter=xe.cpu2,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu2
UserParameter=xe.cpu1,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu1
UserParameter=xe.cpu0,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu0
UserParameter=xe.loadavg,sudo /opt/xensource/bin/xe host-data-source-query data-source=loadavg

I will try to write more for xe vm-data-source-list and xe vm-data-source-query and update here.

Update 20101030:

New UserParamaters:

UserParameter=xe.vmcountup,sudo /opt/xensource/bin/xe vm-list | grep running | wc -l
UserParameter=xe.vmcountdown,sudo /opt/xensource/bin/xe vm-list | grep halted | wc -l
UserParameter=xe.memory_total_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=memory_total_kib
UserParameter=xe.memory_free_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=memory_free_kib
UserParameter=xe.xapi_memory_usage_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_memory_usage_kib
UserParameter=xe.xapi_free_memory_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_free_memory_kib
UserParameter=xe.xapi_live_memory_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_live_memory_kib
UserParameter=xe.xapi_allocation_kib,sudo /opt/xensource/bin/xe host-data-source-query data-source=xapi_allocation_kib
UserParameter=xe.cpu3,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu3
UserParameter=xe.cpu2,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu2
UserParameter=xe.cpu1,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu1
UserParameter=xe.cpu0,sudo /opt/xensource/bin/xe host-data-source-query data-source=cpu0
UserParameter=xe.loadavg,sudo /opt/xensource/bin/xe host-data-source-query data-source=loadavg
UserParameter=xe.vmi[*],sudo /opt/xensource/bin/xe vm-data-source-query data-source=$1 uuid=$2

New Template_xen for importing with CPU and Memory Graph.

Posted in code snippets, geek, servers & tech | 4 Comments

Zabbix Agent RPM on XenServer 5.6 Dom0

By Carl | Published: October 30, 2010

Grab Zabbix RPM for CentOS 5 from http://download.opensuse.org/repositories/home:/ericgearhart:/zabbix/CentOS_CentOS-5/ for your architecture.

wget http://download.opensuse.org/repositories/home:/ericgearhart:/zabbix/CentOS_CentOS-5/i386/zabbix-1.8.3-12.1.i386.rpm
wget http://download.opensuse.org/repositories/home:/ericgearhart:/zabbix/CentOS_CentOS-5/i386/zabbix-agent-1.8.3-12.1.i386.rpm
#installs fine
rpm -Uv zabbix-1.8.3-12.1.i386.rpm
#openssl-devel needed for zabbix_agentd
rpm -Uv zabbix-agent-1.8.3-12.1.i386.rpm
warning: zabbix-agent-1.8.3-12.1.i386.rpm: Header V3 DSA signature: NOKEY, key ID a8022b27
error: Failed dependencies:
	openssl-devel >= 0.9.7d is needed by zabbix-agent-1.8.3-12.1.i386
#try and install openssl-devel
yum --enablerepo=base install openssl-devel
Loaded plugins: fastestmirror
Excluding Packages from CentOS-5 - Base
Finished
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package openssl-devel.i386 0:0.9.8e-12.el5_4.6 set to be updated
--> Processing Dependency: zlib-devel for package: openssl-devel
--> Processing Dependency: krb5-devel for package: openssl-devel
--> Running transaction check
---> Package krb5-devel.i386 0:1.6.1-36.el5_4.1 set to be updated
--> Processing Dependency: e2fsprogs-devel for package: krb5-devel
--> Processing Dependency: keyutils-libs-devel for package: krb5-devel
--> Processing Dependency: libselinux-devel for package: krb5-devel
---> Package zlib-devel.i386 0:1.2.3-3 set to be updated
--> Running transaction check
---> Package e2fsprogs-devel.i386 0:1.39-23.el5 set to be updated
--> Processing Dependency: e2fsprogs-libs = 1.39-23.el5 for package: e2fsprogs-devel
---> Package keyutils-libs-devel.i386 0:1.2-1.el5 set to be updated
---> Package libselinux-devel.i386 0:1.33.4-5.5.el5 set to be updated
--> Processing Dependency: libsepol-devel >= 1.15.2-1 for package: libselinux-devel
--> Running transaction check
---> Package e2fsprogs-devel.i386 0:1.39-23.el5 set to be updated
--> Processing Dependency: e2fsprogs-libs = 1.39-23.el5 for package: e2fsprogs-devel
---> Package libsepol-devel.i386 0:1.15.2-3.el5 set to be updated
--> Processing Dependency: libsepol = 1.15.2-3.el5 for package: libsepol-devel
--> Running transaction check
---> Package e2fsprogs-devel.i386 0:1.39-23.el5 set to be updated
--> Processing Dependency: e2fsprogs-libs = 1.39-23.el5 for package: e2fsprogs-devel
---> Package libsepol.i386 0:1.15.2-3.el5 set to be updated
--> Finished Dependency Resolution
e2fsprogs-devel-1.39-23.el5.i386 from base has depsolving problems
  --> Missing Dependency: e2fsprogs-libs = 1.39-23.el5 is needed by package e2fsprogs-devel-1.39-23.el5.i386 (base)
Error: Missing Dependency: e2fsprogs-libs = 1.39-23.el5 is needed by package e2fsprogs-devel-1.39-23.el5.i386 (base)
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
                        package-cleanup --dupes
                        rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.

So we need to work-around the custom e2fsprogs-devel in xenserver 5.6:

#enable the base repo for this run and install yum-utils
yum --enablerepo=base install yum-utils

#enable the base repo for this run and download new rpm for e2fsprogs-devel
yumdownloader --enablerepo=base e2fsprogs-devel

#install new e2fsprogs-devel
rpm --nodeps -Uvh e2fsprogs-devel*.rpm

#install openssl devel
yum --enablerepo=base install openssl-devel

You now have zabbix binaries on xenserver:

which zabbix_agent
/usr/sbin/zabbix_agent
which zabbix_agentd
/usr/sbin/zabbix_agentd

Check versions:

/usr/sbin/zabbix_agent -V
Zabbix Agent v1.8.3 (revision 13928) (16 August 2010)
Compilation time: Aug 21 2010 01:53:45
/usr/sbin/zabbix_agentd -V
Zabbix Agent (daemon) v1.8.3 (revision 13928) (16 August 2010)
Compilation time: Aug 21 2010 01:53:45
Posted in code snippets, geek, servers & tech | Leave a comment

find and awk for httpd owned files (with count and average)

By Carl | Published: July 25, 2010

These are not very efficient (two sorts in one line for example) but for my needs work fine (improvements welcomed).

Create a list of “filenames|size in bytes” of all httpd owned files sorted by reverse size:

find "/path/to/examine/" -user httpd -type f -printf '%p|%s\n' | sort -t \| +1 -2 > httpd.usage.txt

results:

/path/to/examine/some/user/files/file0.jpg|99995
/path/to/examine/some/user/files/file7.jpg|99994
/path/to/examine/some/user/files/file1.jpg|99993
/path/to/examine/some/user/files/file2.jpg|99991

Sum, average and count created file

awk -F\| '{ s += $2 } END { print "Sum: ", s,", Avg: ", s/NR, ", No.: ", NR }' httpd.usage.txt

results:

Sum:  10831638685 , Avg:  49539.2 , No.:  218648

Show top10 file counts by user:

cat httpd.usage.txt | awk -F\/ '{print$5}' | sort | uniq -c | sort -nrk 1,1 | head -n 10

results:

  61088 auser123
  35028 auser1435
  13907 auser124
   9952 auser1251
   9225 auser13516
   9181 auser1368
   8608 auser231
   7588 auser479
   6121 auser1338
   5844 auser666

Show bytes owned for a users files of specific user (from existing data):

cat httpd.usage.txt | grep USERNAME | awk -F\| '{print$2}' | awk '{  sum += $1 } END { print sum }'
2802473125

As your directory structures will probably differ from mine you must modify one or more of: +1, -2, $2 or $5

To-Do: Make size calculation automated from top10 list.

Posted in code snippets, geek, servers & tech | Leave a comment

Siemens Gigaset C475 handset <> handset transfer

By Carl | Published: May 20, 2010

There seems to be some problems transferring calls between Siemens Gigaset C467 handsets when on the same base station. It’s not a perfect fix but #3 does what we needed.

There are three ways to try transfer inbound calls on the Gigaset C475 handset:

1) Doesn’t work for transfers to/from handsets on same basestation:

options >
external call >
extentension number >
send >
hangup

2) Doesn’t work for transfers to/from handsets on same basestation:

# key >
extension number >
conf >
hangup

3) Does work for transfers to/from handsets on same basestation only:

left menu button >
base station extension >
call >
conf / convereference >
hangup
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Configure sendmail with saslauthd for SMTP AUTH

By Carl | Published: May 15, 2010

Install:

wget http://dag.wieers.com/rpm/packages/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
rpm -Uv rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
yum install sendmail sendmail-cf cyrus-sasl-plain
cd /etc/mail
vi sendmail.mc
	change from: DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
	change to:   DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
	add:		 define(`confAUTH_MECHANISMS’, `LOGIN PLAIN’)dnl
	add:		 TRUST_AUTH_MECH(`LOGIN PLAIN')dnl
make sendmail.cf -C /etc/mail
chkconfig sendmail on
chkconfig saslauthd on
/etc/init.d/sendmail start
/etc/init.d/saslauthd start
adduser someusername (the username to allow relay)
passwd someusername (the username to allow relay)
vi /etc/passwd
	change from: someusername:x:500:500::/home/relay170:/sbin/nologin
	change to: someusername:x:500:500::/home/relay170:/home/relay



Telent SMTP AUTH test:

carl@carld630:~$ telnet smtp.hostname.com 25

Trying 123.123.123.123…
Connected to 123.123.123.123.
Escape character is ‘^]’.
220 smtp.hostname.com ESMTP Sendmail 8.13.8/8.13.8; Sat, 15 May 2010 21:01:58 GMT

AUTH LOGIN

334 VXNlcm5hbWU6

base64 encoded username

334 UGFzc3dvcmQ6

base64 encoded password

235 2.0.0 OK Authenticated

mail from: something@adomain.com

250 2.1.0 something@adomain.com… Sender ok

rcpt to: something@adomain.com

250 2.1.5 something@adomain.com… Recipient ok

data

354 Enter mail, end with “.” on a line by itself

Subject: Testing Relay with Auth
Some body
.

250 2.0.0 o4FL1wad003835 Message accepted for delivery

quit



Telnet Relay Denied Test:

telnet 89.248.50.170 25

Trying 123.123.123.123…
Connected to 123.123.123.123.
Escape character is ‘^]’.
220 smtp.hostname.com ESMTP Sendmail 8.13.8/8.13.8; Sat, 15 May 2010 21:03:25 GMT

mail from: something@adomain.com

250 2.1.0 something@adomain.com… Sender ok

rcpt to: something@adomain.com

550 5.7.1 something@adomain.com… Relaying denied. Proper authentication required.

quit
Posted in code snippets, geek, servers & tech | Leave a comment

roundcube add subject to smtp_log

By Carl | Published: April 17, 2010

vi program/steps/mail/func.inc

change:

if ($CONFIG['smtp_log']) {
write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
$RCMAIL->user->get_username(),
$_SERVER['REMOTE_ADDR'],
$mailto,
!empty($smtp_response) ? join('; ', $smtp_response) : ''));
}

to:

if ($CONFIG['smtp_log']) {
write_log('sendmail', sprintf("User %s [%s]; Message for %s; Subject: %s %s",
$RCMAIL->user->get_username(),
$_SERVER['REMOTE_ADDR'],
$mailto,
$headers['Subject'],
!empty($smtp_response) ? join('; ', $smtp_response) : ''));
}
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Install Dell OpenManage 6.1 / omsa / omreport into Citrix XenServer dom0

By Carl | Published: February 13, 2010

UPDATE 17/06/2010: Please also see the comment from David below and blog post about Dells supplemental package for XenServer 5.6 which may be a better method.

A quick guide to getting openmanage installed for RAID monitoring on a Xen node.

OM 6.2 has an error with “Error: Missing Dependency: libxslt.so.1″ which is with the Dell package.

***Use 6.1 if 6.2 doesn’t work for you (R710 for example)***
***UPDATE~***: As pointed out by digibyte in the comments, you may be able to use 6.2 by installing:

wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/libxslt-1.1.17-2.el5_2.2.i386.rpm
rpm -Uvh libxslt-1.1.17-2.el5_2.2.i386.rpm

1. wget -q -O – http://linux.dell.com/repo/hardware/OMSA_6.1/bootstrap.cgi | bash
2. yum install srvadmin-storage.i386
3. srvadmin-services.sh start

Now test:
omreport storage pdisk controller=0

Sending an email on degraded RAID using omreport:

1. wget ftp://ftp.pbone.net/mirror/archive.fedoraproject.org/fedora/linux/releases/8/Fedora/i386/os/Packages/mailx-8.1.1-46.fc7.i386.rpm
2. rpm -Uv mailx-8.1.1-46.fc7.i386.rpm
3. mkdir /root/scripts/
4. vi /root/scripts/check.raid.sh

#!/bin/sh
rm /tmp/check.raid.txt
omreport storage pdisk controller=0 | grep State | grep -v Online > /tmp/check.raid.txt
FILESIZE=$(stat -c%s "/tmp/check.raid.txt")
if [ $FILESIZE != 0 ];
then
	omreport storage pdisk controller=0 > /tmp/check.raid.txt
	cat /tmp/check.raid.txt | mail -s 'check RAID on XENxx' some@maildomain.ext
	echo "RAID - FAIL (mail sent)"
else
	echo "RAID - OK"
fi

5. chmod +x /root/scripts/check.raid.sh
6. crontab -e
*/5 * * * * /root/scripts/check.raid.sh >/dev/null 2>&1

7. Test /root/scripts/check.raid.sh

rpm -Uvh
Posted in geek, servers & tech | 4 Comments

Modifications to www.carlheaton.co.uk

By Carl | Published: January 13, 2010

I’ve been making a few modifications to *.carlheaton.co.uk like re-introducing the core Carl Heaton index page with a list of projects and other on-going ideas.

I will still post tutorials/dumps here where appropriate for code, server and electronics related things, but I’ll be posting no further ‘random links’ on this Slog because it’s too much of a pain to format and publish them vs. tweeting.

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Converting 32bit RRD to 64bit RRD (moving cacti between architectures)

By Carl | Published: October 3, 2009

While migrating cacti over to a new virtual machine I got “ERROR: This RRD was created on another architecture” in /var/log/httpd/error_log when the crontab ran resulting in blank graphs. Read More »

Posted in code snippets, geek, servers & tech | 6 Comments