Author Archives: Hermann Maurer

Skyline of Frankfurt City at night I shot the image while staying on the new bridge in Frankfurt named "Osthafenbrücke". The large house at left side of the picture is one of designed and built by a very famous Austrian architecture F.Hundertwasser.Skyline of Frankfurt City at night I shot the image while staying on the new bridge in Frankfurt named "Osthafenbrücke". The large house at left side of the picture is one of designed and built by a very famous Austrian architecture F.Hundertwasser.
Skyline of Frankfurt City at night I shot the image while staying on the new bridge in Frankfurt named "Osthafenbrücke". The large house at left side of the picture is one of designed and built by a very famous Austrian architecture F.Hundertwasser.30-Aug-2014 22:16, OLYMPUS IMAGING CORP. E-P5, 2.8, 36.0mm, 2 sec, ISO 200
View at Picasa
 

Notes on usage of Check_MK Multisite with LDAPS

Leave a reply

I had to configure OMD/Check_MK version 1.2.4p3 to use LDAPS to connect to Windows domain controller. The operating system on the host running OMD/Check_MK is CentOS 6.5 x64.

Continue reading →

Postfix in Internet, Relay in LAN

Leave a reply

Assume the following scenario:

Your Postfix MTA is located in the Internet (having a public IP address) and you have configured an external DNS server there to be used for DNS requests.  But you are going to send mails using an internal mail server as mail relay. In this case the private IP address of the internal mail relay cannot be re-solved by the external DNS server. In this situation Postfix cannot use the mail relay and shows an error message like this below in the log file:

Aug 26 12:49:12 myclient postfix/error[28425]: B35AF34B: to=<me@company.local>, relay=none, delay=0.14, delays=0.09/0/0/0.04, dsn=4.3.5, status=deferred (delivery temporarily suspended: Host or domain name not found. Name service error for name=mailrelay.company.local type=AAAA: Host not found)

To re-solve the issue you have to add the following statement to main.cf

disable_dns_lookups = yes

and re-load postfix:

service postfix reload

Use the appropriate command to enforce delivery of queued mails.

 

Some useful postfix commands

1 Reply

To re-try delivering of queued mails:

postqueue -f

To remove all deferred mails:

postsuper -d ALL deferred

To remove all mails

postsuper -d ALL

Insufficient system resources (in reply to MAIL FROM command)

Leave a reply

If you see an error like this while trying to send an email via your Exchange server

E32F1291C 5322 Tue Aug 26 09:15:08 MAILER-DAEMON
 (host yourexchangeserver.com[10.10.10.10] said: 452 4.3.1 Insufficient system resources (in reply to MAIL FROM command))

then the system partition of the Exchange server has become low on free space. I have been watching this, if the free space on the drive C: of my server becomes less then 6% of the whole partition size. These are still more than 3 GByte!

You don’t need to do anything on the Exchange server but to free some additional space.

 

OMD: If PNP4Nagios XML file has changed

Leave a reply

Assume the following situation:

You changed something on a service and the performance data format has changed as well. PNP4Nagios graphs that belong to the changed service will not be changed automatically. You have to remove the old XML file that belongs to the changed service and then re-start your OMD site completely like this:

OMD[mysite]:~$ rm var/pnp4nagios/perfdata/webserver35/Apache_127.0.0.1_80_Status.xml
OMD[mysite]:~$ omd restart

In a few minutes the XML file should be re-generated and graphs belonging to new performance data counters should appear. If NOT, I’m afraid that you have to remove all RRD-files that belong to the service (you can recognize it on the file name) and to hope that they will be re-created properly. In this case all the server statistic will be lost (you have been warned!).

Neues Fotoalbum von unserem Sommerurlaub in Frankreich

Leave a reply

Endlich ist es soweit und habe jede Menge Fotos auf PicaseWeb hochgeladen. Hier ist das neue Fotoalbum zu besichtigen:

Next »
Am Strand Crohot Noir / На пляже Кро'от Нуар
Am Strand Crohot Noir / На пляже Кро'от Нуар06-Aug-2014 19:05, OLYMPUS IMAGING CORP. E-P5, 4.5, 17.0mm, 0.003 sec, ISO 200
View at Picasa
Viktoiria auf einer Bank sitzend in Les Sables-d'Olonne / Виктория на скамейке в Ле-Сабль-Д'Олон
Viktoiria auf einer Bank sitzend in Les Sables-d'Olonne / Виктория на скамейке в Ле-Сабль-Д'Олон29-Jul-2014 15:56, OLYMPUS IMAGING CORP. E-P5, 4.5, 17.0mm, 0.017 sec, ISO 200
View at Picasa
Abend am Bassin d'Arcachon / Вечером на берегу Аркашонского залива
Abend am Bassin d'Arcachon / Вечером на берегу Аркашонского залива02-Aug-2014 22:02, OLYMPUS IMAGING CORP. E-P5, 2.8, 17.0mm, 0.017 sec, ISO 3200
View at Picasa
Viktoria am Felsendstrand während der Ebbe / Виктория на пляже во время отлива
Viktoria am Felsendstrand während der Ebbe / Виктория на пляже во время отлива30-Jul-2014 12:09, OLYMPUS IMAGING CORP. E-P5, 4.5, 21.0mm, 0.001 sec, ISO 200
View at Picasa
 
Fahrradfahrerinnen / Велосипедистки
Fahrradfahrerinnen / Велосипедистки27-Jul-2014 13:28, OLYMPUS IMAGING CORP. E-P5, 9.0, 40.0mm, 0.003 sec, ISO 200
View at Picasa
Felsen in Betignolles-sur-Mer / Скалы в Бретиньоль-сюр-Мер
Felsen in Betignolles-sur-Mer / Скалы в Бретиньоль-сюр-Мер27-Jul-2014 18:14, OLYMPUS IMAGING CORP. E-P5, 5.0, 40.0mm, 0.002 sec, ISO 200
View at Picasa
Abends in Arcachon / Вечером в Аркашоне
Abends in Arcachon / Вечером в Аркашоне05-Aug-2014 21:41, OLYMPUS IMAGING CORP. E-P5, 5.0, 17.0mm, 0.033 sec, ISO 6400
View at Picasa
Fallschirmspringer auf der Dune-du-Pilat / Парашютисты на Дюне Пила
Fallschirmspringer auf der Dune-du-Pilat / Парашютисты на Дюне Пила07-Aug-2014 15:30, OLYMPUS IMAGING CORP. E-P5, 5.3, 120.0mm, ISO 200
View at Picasa
 
Sicht auf eine Sandinsel von der Dune-du-Pilat / Вид на песчаный остров с Дюны Пила
Sicht auf eine Sandinsel von der Dune-du-Pilat / Вид на песчаный остров с Дюны Пила07-Aug-2014 15:15, OLYMPUS IMAGING CORP. E-P5, 5.0, 40.0mm, ISO 200
View at Picasa
Strand in Cap Ferre / На берегу в Кап Ферр
Strand in Cap Ferre / На берегу в Кап Ферр03-Aug-2014 15:14, OLYMPUS IMAGING CORP. E-P5, 5.6, 17.0mm, 0.001 sec, ISO 200
View at Picasa
Leerer und schöner Sandstrand Crohot Noir / Пустой замечательный пляж Кро'от Нуар
Leerer und schöner Sandstrand Crohot Noir / Пустой замечательный пляж Кро'от Нуар04-Aug-2014 17:46, OLYMPUS IMAGING CORP. E-P5, 8.0, 17.0mm, 0.002 sec, ISO 200
View at Picasa
Felsen in Betignolles-sur-Mer / Скалы в Бретиньоль-сюр-Мер
Felsen in Betignolles-sur-Mer / Скалы в Бретиньоль-сюр-Мер30-Jul-2014 12:13, OLYMPUS IMAGING CORP. E-P5, 7.1, 14.0mm, 0.002 sec, ISO 200
View at Picasa
 
Vera am Felsendstrand während der Ebbe / Вера на пляже во время отлива
Vera am Felsendstrand während der Ebbe / Вера на пляже во время отлива28-Jul-2014 15:07, OLYMPUS IMAGING CORP. E-P5, 5.0, 17.0mm, 0.002 sec, ISO 200
View at Picasa
Felsen in Betignolles-sur-Mer / Скалы в Бретиньоль-сюр-Мер
Felsen in Betignolles-sur-Mer / Скалы в Бретиньоль-сюр-Мер30-Jul-2014 12:33, OLYMPUS IMAGING CORP. E-P5, 5.0, 32.0mm, 0.001 sec, ISO 200
View at Picasa
Am Strand Crohot Noir / На пляже Кро'от Нуар
Am Strand Crohot Noir / На пляже Кро'от Нуар06-Aug-2014 19:11, OLYMPUS IMAGING CORP. E-P5, 4.5, 17.0mm, 0.003 sec, ISO 200
View at Picasa
Rathaus von Arcachon / Мэрия Аркашона
Rathaus von Arcachon / Мэрия Аркашона05-Aug-2014 19:44, OLYMPUS IMAGING CORP. E-P5, 8.0, 17.0mm, 0.01 sec, ISO 200
View at Picasa
 
Viktoria auf der Dune-du-Pilat mit dem unendlichen Pinienwald im Hintergrund / Виктория на Дюне Пила на фоне бесконечного пиниевого леса
Viktoria auf der Dune-du-Pilat mit dem unendlichen Pinienwald im Hintergrund / Виктория на Дюне Пила на фоне бесконечного пиниевого леса07-Aug-2014 15:42, OLYMPUS IMAGING CORP. E-P5, 5.0, 40.0mm, 0.001 sec, ISO 200
View at Picasa
Viktoria in La Rochelle / Виктория в Ла Рошели
Viktoria in La Rochelle / Виктория в Ла Рошели02-Aug-2014 14:43, OLYMPUS IMAGING CORP. E-P5, 3.2, 17.0mm, ISO 200
View at Picasa
Kirche in Betignolles-sur-Mer / Церковь в Бретиньоль-сюр-Мер
Kirche in Betignolles-sur-Mer / Церковь в Бретиньоль-сюр-Мер28-Jul-2014 18:57, OLYMPUS IMAGING CORP. E-P5, 5.0, 17.0mm, 0.003 sec, ISO 200
View at Picasa
Unterwegs zum Strand / По дороге на пляж
Unterwegs zum Strand / По дороге на пляж06-Aug-2014 16:50, OLYMPUS IMAGING CORP. E-P5, 4.5, 17.0mm, 0.002 sec, ISO 200
View at Picasa
 
Next »

Rosen aus meinem Garten

Leave a reply
Created by Hermann Maurer with Olympus E-P5 OLYMPUS M.40-150mm F4-5.6 R at 23.08.2014Created by Hermann Maurer with Olympus E-P5 OLYMPUS M.40-150mm F4-5.6 R at 23.08.2014
Created by Hermann Maurer with Olympus E-P5 OLYMPUS M.40-150mm F4-5.6 R at 23.08.201423-Aug-2014 16:15, OLYMPUS IMAGING CORP. E-P5, 4.9, 89.0mm, 0.006 sec, ISO 200
View at Picasa