Tag: Computer

Influxdb 2.0 lessons learned

Posted on by mario

I played a bit with influxdb version 2.0.0, telegraf client and two of my raspberry pies.
On my oldest pi  a 1 B+ the telegraf client caused too much performance issues on that light weight single CPU and 480 MB of usable RAM. So I chose a simple bash script with curl to send the CPU temperature to influxdb.

#!/bin/bash
timestamp=$(date +%s)
temp=$(vcgencmd measure_temp)
curl -XPOST \
"https://flux.example.com/api/v2/write?org=none&bucket=pihole&precision=s" \
--header "Authorization: Token asas==" \
--data-raw "cpu-temperature,host=pihole ${temp//\'C/} ${timestamp}"

At first I was running influxdbd by hand. But I didn’t want the usual port of 9999 of the alpha version and I also wanted SSL encryption when I log into the backend. Pretty easy with the already running apache on that server.

<VirtualHost *:443>
	ServerName flux.example.com
	DocumentRoot /var/www/empty

	<Directory /var/www/empty>
		Options Indexes FollowSymLinks
		AllowOverride None
		Require all granted
	</Directory>

	ProxyPass / http://localhost:9999/
	ProxyPassReverse / http://localhost:9999/

	SSLEngine on
	SSLCertificateFile  fullchain.pem
	SSLCertificateKeyFile privkey.pem
</VirtualHost>

so far so good. Starting the influxdb by hand after a reboot or failing isn’t an option.  So I created by on systemd service file

sudo $EDITOR /lib/systemd/system/influxdb2.service

[Unit]
Description=InfluxDB 2.0 service file.
Documentation=https://v2.docs.influxdata.com/v2.0/get-started/
After=network-online.target

[Service]
User=influx
Group=influx
ExecStart=/usr/local/bin/influxd
Restart=on-failure

[Install]
WantedBy=multi-user.target

Do not forget to enable it :D sudo systemctl enable influxdb2

 

So far I made one observation. The telegraf client is doing a lot of DNS requests through the network. If I’m not wrong it does it for every request. If you look at the graphic you see that the bottom a big blue line. That is the DNS requests from telegraf. At some point around 20:00 You see a drop. Well there I change the flush interval to 120 seconds. Later at round 7:30 I wrote the IP and host name into /etc/hosts and the “noise” was gone. That is something you maybe want to do in your devices, too to save some bandwidth and energy.

CISCO router password recovery

Posted on by mario

– Attach a terminal or PC with terminal emulation to the console port of the router.
Use these terminal settings:

* 9600 baud rate
* No parity
* 8 data bits
* 1 stop bit
* No flow control
– If you can access the router, type show version at the prompt, and record the configuration register setting. See Example of Password Recovery Procedure in order to view the output of a show version command
Note: The configuration register is usually set to 0x2102 or 0x102. If you can no longer access the router (because of a lost login or TACACS password), you can safely assume that your configuration register is set to 0x2102.

 

– Press **Break** (**Ctrl-Break** Windows XP) on the terminal keyboard within 60 seconds of power up in order to put the router into ROMMON.
– Type **confreg 0x2142** at the rommon 1> prompt in order to boot from Flash. This step bypasses the startup configuration where the passwords are stored.
– Type **reset** at the rommon 2> prompt. The router reboots, but ignores the saved configuration.
– Type **no** after each setup question, or press **Ctrl-C** in order to skip the initial setup procedure.
– Type **enable** at the Router> prompt. You are in enable mode and should see the Router# prompt.
– Type **configure memory** or **copy startup-config running-config** in order to copy the nonvolatile RAM (NVRAM) into memory. **Important**: Do not type **copy running-config startup-config** or **write**. These commands erase your startup configuration.
– Type **show running-config**. The **show running-config** command shows the configuration of the router. In this configuration, the **shutdown** command appears under all interfaces, which indicates all interfaces are currently shut down. In addition, the passwords (enable password, enable secret, vty, console passwords) are in either an encrypted or unencrypted format. You can reuse unencrypted passwords. You must change encrypted passwords to a new password.
– Type **configure terminal**.
– The hostname(config)# prompt appears.
– Type **enable secret <password>** in order to change the enable secret password. For example: hostname(config)#**enable secret cisco**
– Issue the **no shutdown** command on every interface that you use. If you issue a **show ip interface brief** command, every interface that you want to use should display up up.
– Type **config-register <configuration_register_setting>**. Where **configuration_register_setting** is either the value you recorded in step 2 or **0x2102** . For example: hostname(config)#**config-register 0x2102**
– Press **Ctrl-z** or **end** in order to leave the configuration mode. The hostname# prompt appears.
– Type **write memory** or **copy running-config startup-config** in order to commit the changes.

Wild card domain to localhost because development matters

Posted on by mario

I have an A record for *.local at my test domain to 127.0.0.1

For web development it is often required to have a domain name rather than a subfolder in localhost. A vhost for a (sub)domain is easy to set up on my local apache instllation. I can have even a free, valid SSL certificate for that vhost. Wait, what? How can I have a valid certificate for free for a local domain? I use Let’s encrypt with DNS chalange. Sure every time I have to update the certifacte I have to change a DNS txt record, but that is easy.

Another reason why I have a wild card record to 127.0.0.1 is that I can add as many vhosts for testing to apache and don’t have to add or change the DNS settings. Also I can use it on every computer as long as it can query the DNS server on the internet. I can even give my co worker my vhost config and it works without changes.

So *.local.apachehaus.de is free for development. But you can’t have a SSL certificate. If you want that, you can do the same trick with your domain.  Happy development.

How to change the timzone of all mailboxes / accounts in AzureAD

Posted on by mario

How to change the timzone of all mailboxes / accounts in AzureAD

run PowerShell as Adminsitrator (use this window for all steps)
1) Allow remote signed Scripts

Set-ExecutionPolicy RemoteSigned

2) Log into AzureAD with an Adminsitrator account

$session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://outlook.office365.com/powershell-liveid/" -Credential $cred -Authentication Basic -AllowRedirection

3) Import remote commands (ignore warnings)

Import-PSSession $session

4) get all mail boxes

get-mailbox

5) Set the timezone ( you could set the language, too)

example
get-mailbox | Set-MailboxRegionalConfiguration -Language  -TimeZone

In the Example below we will set all mailboxes in our Office 365 Tenant to the Language English (UK) and the GMT Time Zone.

get-mailbox | Set-MailboxRegionalConfiguration -Language 2057 -TimeZone "GMT Standard Time"

Get only the aliases with

select -expand emailaddresses alias

Final To German Timezone

get-mailbox | select -expand Alias | Set-MailboxRegionalConfiguration -TimeZone "W. Europe Standard Time"

Get-User | Get-Mailbox

The Language ID is a number that corresponds to the correct language type. The following table shows you which number corresponds to which language.
Language (Locale)     Code
Arabic (Algeria)     5121
Arabic (Bahrain)     15361
Arabic (Egypt)     3073
Arabic (Iraq)     2049
Arabic (Jordan)     11265
Arabic (Kuwait)     13313
Arabic (Lebanon)     12289
Arabic (Libya)     4097
Arabic (Morocco)     6145
Arabic (Oman)     8193
Arabic (Qatar)     16385
Arabic (Saudi Arabia)     1025
Arabic (Syria)     10241
Arabic (Tunisia)     7169
Arabic (U.A.E.)     14337
Arabic (Yemen)     9217
Basque     1069
Bulgarian     1026
Catalan     1027
Chinese (Hong Kong S.A.R)     3076
Chinese (Macau S.A.R)     5124
Chinese (People’s Republic of China)     2052
Chinese (Singapore)     4100
Chinese (Taiwan)     1028
Croatian     1050
Czech     1029
Danish     1030
Dutch (Belgium)     2067
Dutch (Netherlands)     1043
English (Australia)     3081
English (Belize)     10249
English (Canada)     4105
English (Caribbean)     9225
English (Ireland)     6153
English (Jamaica)     8201
English (New Zealand)     5129
English (Republic of the Philippines)     13321
English (South Africa)     7177
English (Trinidad)     11273
English (United Kingdom)     2057
English (United States)     1033
English (Zimbabwe)     12297
Estonian     1061
Filipino (Philippines)     1124
Finnish     1035
French (Belgium)     2060
French (Canada)     3084
French (France)     1036
French (Luxembourg)     5132
French (Principality of Monaco)     6156
French (Switzerland)     4108
German (Austria)     3079
German (Germany)     1031
German (Liechtenstein)     5127
German (Luxembourg)     4103
German (Switzerland)     2055
Greek     1032
Hebrew     1037
Hindi     1081
Hungarian     1038
Icelandic     1039
Indonesian     1057
Italian (Italy)     1040
Italian (Switzerland)     2064
Japanese     1041
Kazakh     1087
Korean     1042
Latvian     1062
Lithuanian     1063
Malay     1086
Norwegian (Bokmål)     1044
Persian     1065
Polish     1045
Portuguese (Brazil)     1046
Portuguese (Portugal)     2070
Romanian     1048
Russian     1049
Serbian (Cyrillic)     3098
Serbian (Latin)     2074
Slovak     1051
Slovenian     1060
Spanish (Argentina)     11274
Spanish (Bolivia)     16394
Spanish (Chile)     13322
Spanish (Colombia)     9226
Spanish (Costa Rica)     5130
Spanish (Dominican Republic)     7178
Spanish (Ecuador)     12298
Spanish (El Salvador)     17418
Spanish (Guatemala)     4106
Spanish (Honduras)     18442
Spanish (Mexico)     2058
Spanish (Nicaragua)     19466
Spanish (Panama)     6154
Spanish (Paraguay)     15370
Spanish (Peru)     10250
Spanish (Puerto Rico)     20490
Spanish (International Sort)     3082
Spanish (Traditional Sort)     1034
Spanish (Uruguay)     14346
Spanish (Venezuela)     8202
Swedish (Finland)     2077
Swedish (Sweden)     1053
Thai     1054
Turkish     1055
Ukrainian     1058
Urdu     1056
Vietnamese     1066

The TimeZone consists of a String representing the time zone.  Use the value from the middle column of the table below:

Index     Name of Time Zone     Time
000     Dateline Standard Time     (GMT-12:00) International Date Line West
001     Samoa Standard Time     (GMT-11:00) Midway Island, Samoa
002     Hawaiian Standard Time     (GMT-10:00) Hawaii
003     Alaskan Standard Time     (GMT-09:00) Alaska
004     Pacific Standard Time     (GMT-08:00) Pacific Time (US and Canada); Tijuana
010     Mountain Standard Time     (GMT-07:00) Mountain Time (US and Canada)
013     Mexico Standard Time 2     (GMT-07:00) Chihuahua, La Paz, Mazatlan
015     U.S. Mountain Standard Time     (GMT-07:00) Arizona
020     Central Standard Time     (GMT-06:00) Central Time (US and Canada
025     Canada Central Standard Time     (GMT-06:00) Saskatchewan
030     Mexico Standard Time     (GMT-06:00) Guadalajara, Mexico City, Monterrey
033     Central America Standard Time     (GMT-06:00) Central America
035     Eastern Standard Time     (GMT-05:00) Eastern Time (US and Canada)
040     U.S. Eastern Standard Time     (GMT-05:00) Indiana (East)
045     S.A. Pacific Standard Time     (GMT-05:00) Bogota, Lima, Quito
050     Atlantic Standard Time     (GMT-04:00) Atlantic Time (Canada)
055     S.A. Western Standard Time     (GMT-04:00) Caracas, La Paz
056     Pacific S.A. Standard Time     (GMT-04:00) Santiago
060     Newfoundland and Labrador Standard Time     (GMT-03:30) Newfoundland and Labrador
065     E. South America Standard Time     (GMT-03:00) Brasilia
070     S.A. Eastern Standard Time     (GMT-03:00) Buenos Aires, Georgetown
073     Greenland Standard Time     (GMT-03:00) Greenland
075     Mid-Atlantic Standard Time     (GMT-02:00) Mid-Atlantic
080     Azores Standard Time     (GMT-01:00) Azores
083     Cape Verde Standard Time     (GMT-01:00) Cape Verde Islands
085     GMT Standard Time     (GMT) Greenwich Mean Time: Dublin, Edinburgh, Lisbon, London
090     Greenwich Standard Time     (GMT) Casablanca, Monrovia
095     Central Europe Standard Time     (GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague
100     Central European Standard Time     (GMT+01:00) Sarajevo, Skopje, Warsaw, Zagreb
105     Romance Standard Time     (GMT+01:00) Brussels, Copenhagen, Madrid, Paris
110     W. Europe Standard Time     (GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna
113     W. Central Africa Standard Time     (GMT+01:00) West Central Africa
115     E. Europe Standard Time     (GMT+02:00) Bucharest
120     Egypt Standard Time     (GMT+02:00) Cairo
125     FLE Standard Time     (GMT+02:00) Helsinki, Kiev, Riga, Sofia, Tallinn, Vilnius
130     GTB Standard Time     (GMT+02:00) Athens, Istanbul, Minsk
135     Israel Standard Time     (GMT+02:00) Jerusalem
140     South Africa Standard Time     (GMT+02:00) Harare, Pretoria
145     Russian Standard Time     (GMT+03:00) Moscow, St. Petersburg, Volgograd
150     Arab Standard Time     (GMT+03:00) Kuwait, Riyadh
155     E. Africa Standard Time     (GMT+03:00) Nairobi
158     Arabic Standard Time     (GMT+03:00) Baghdad
160     Iran Standard Time     (GMT+03:30) Tehran
165     Arabian Standard Time     (GMT+04:00) Abu Dhabi, Muscat
170     Caucasus Standard Time     (GMT+04:00) Baku, Tbilisi, Yerevan
175     Transitional Islamic State of Afghanistan Standard Time     (GMT+04:30) Kabul
180     Ekaterinburg Standard Time     (GMT+05:00) Ekaterinburg
185     West Asia Standard Time     (GMT+05:00) Islamabad, Karachi, Tashkent
190     India Standard Time     (GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi
193     Nepal Standard Time     (GMT+05:45) Kathmandu
195     Central Asia Standard Time     (GMT+06:00) Astana, Dhaka
200     Sri Lanka Standard Time     (GMT+06:00) Sri Jayawardenepura
201     N. Central Asia Standard Time     (GMT+06:00) Almaty, Novosibirsk
203     Myanmar Standard Time     (GMT+06:30) Yangon Rangoon
205     S.E. Asia Standard Time     (GMT+07:00) Bangkok, Hanoi, Jakarta
207     North Asia Standard Time     (GMT+07:00) Krasnoyarsk
210     China Standard Time     (GMT+08:00) Beijing, Chongqing, Hong Kong SAR, Urumqi
215     Singapore Standard Time     (GMT+08:00) Kuala Lumpur, Singapore
220     Taipei Standard Time     (GMT+08:00) Taipei
225     W. Australia Standard Time     (GMT+08:00) Perth
227     North Asia East Standard Time     (GMT+08:00) Irkutsk, Ulaanbaatar
230     Korea Standard Time     (GMT+09:00) Seoul
235     Tokyo Standard Time     (GMT+09:00) Osaka, Sapporo, Tokyo
240     Yakutsk Standard Time     (GMT+09:00) Yakutsk
245     A.U.S. Central Standard Time     (GMT+09:30) Darwin
250     Cen. Australia Standard Time     (GMT+09:30) Adelaide
255     A.U.S. Eastern Standard Time     (GMT+10:00) Canberra, Melbourne, Sydney
260     E. Australia Standard Time     (GMT+10:00) Brisbane
265     Tasmania Standard Time     (GMT+10:00) Hobart
270     Vladivostok Standard Time     (GMT+10:00) Vladivostok
275     West Pacific Standard Time     (GMT+10:00) Guam, Port Moresby
280     Central Pacific Standard Time     (GMT+11:00) Magadan, Solomon Islands, New Caledonia
285     Fiji Islands Standard Time     (GMT+12:00) Fiji Islands, Kamchatka, Marshall Islands
290     New Zealand Standard Time     (GMT+12:00) Auckland, Wellington
300     Tonga Standard Time     (GMT+13:00) Nuku’alofa

Javascript getElmentsByClassName

Posted on by mario

If not having jquery this could be a solution

<script type="text/javascript">
function getElementsByClassName(classname, node)  {
    if(!node) node = document.getElementsByTagName("body")[0];
    var a = [];
    var re = new RegExp('\\b' + classname + '\\b');
    var els = node.getElementsByTagName("*");
    for(var i=0,j=els.length; i<j; i++){
        if(re.test(els[i].className)){
            a.push(els[i]);
        }
    }
    return a;
}
</script>

Install Tweetdeck on Ubuntu 10.04 64 bit

Posted on by mario

The worse thing about this is that there is only a 32 bit version of adobe air which is needed to run tweetdeck.

sudo apt-get install lib32asound2 lib32gcc1 lib32ncurses5 lib32stdc++6 lib32z1 libc6 libc6-i386 lib32nss-mdns
wget http://frozenfox.freehostia.com/cappy/getlibs-all.deb
sudo dpkg -i getlibs-all.deb
sudo getlibs -l libnss3.so.1d libnssutil3.so.1d libsmime3.so.1d libssl3.so.1d libnspr4.so.0d libplc4.so.0d \
libplds4.so.0d libgnome-keyring.so libgnome-keyring.so.0 libgnome-keyring.so.0.1.1
sudo ldconfig

Download the AdobeAIRInstaller.bin from http://get.adobe.com/de/air/otherversions/

chmod +x ~/Desktop/AdobeAIRInstaller.bin
sudo ~/Desktop/AdobeAIRInstaller.bin

Keept the /opt folder

goto http://www.tweetdeck.com/desktop/

Die schwierige Arbeit in einer IT-Hotline…

Posted on by mario

Anfrage von Anwenderin:

Wenn ich ein Film auf meine Diskette speichern möchte, kommt die Meldung, dass auf der Diskette nicht genügend Speicherplatz vorhanden ist.

Dann versuche ich mit -speichern Verknüpfung und dann ist Platz genug und Film ist auf der Diskette.

Problem ist aber, wenn ich diesen Film auf der Diskette auf einem anderen PC anschauen möchte.

Da kommt die Meldung: -nicht gefunden. Aber auf meinem PC funktioniert es. Was kann es sein?

Antwort IT-Hotline:

Sehr geehrte Anwenderin,

in Ihre Handtasche passt Ihr Pelzmantel einfach nicht rein. Ein Zettel mit Vermerk, dass Ihr Pelzmantel im Schrank hängt, passt in Ihre Handtasche rein. Also solange Sie diesen Zettel daheim lesen, finden Sie Ihren Pelzmantel im Schrank.

Schwieriger wird es, wenn Sie Ihre Freundin besuchen und dort Ihren Zettel lesen und erfahren, dass Ihr Pelzmantel im Schrank hängt. In dem Schrank von Ihrer Freundin können Sie suchen, so lange Sie wollen, Ihren Pelzmantel finden Sie dort bestimmt nicht…

Noch eine Hilfe:

Handtasche = Diskette
Pelzmantel = Film
Zettel = Verknüpfung
Schrank = PC
Motten im Schrank = PC Virus
Nachbar im Schrank = Hacker

…alles klar?!

neues DVD-Rom neue Aktivierung

Posted on by mario

Heute habe ich bei meinem Media PC mit XP Pro der an dem schönen 32″ Monitor angeschlossen ist das alte IDE DVD-Rom gegen einen SATA DVD Brenner getauscht. Dank des guten Gehäuses eine Sache von maximal 30 Sekunden. Jedoch bekam ich dann die Meldung von Windows, dass sich die Hardware grundlegend geändert hätte und ich solle Windows innerhalb der nächsten 3 Tage bitte neu aktivieren. Ich weiß zwar, dass XP nicht mehr das neuste Betriebssystem ist, aber für 20 Euro immer noch deutlich besser als Windows Virus und deutlich billiger als Fenster 7. Zum Filme gucken vollkommen ausreichend.

Jetzt frage ich mich allerdings, was M$ sich dabei denkt, dass wenn ich nur das DVD Laufwerk tausche ich den PC grundlegend geändert hätte. Hoffentlich wird das wenn ich Fenster 7, dass ich bis jetzt nur auf dem Laptop habe, auch auf dem PC installiere nicht so penetrant, wenn ich mal etwas auswechsel. ARGH!

Posts Tagged Computer

Archives by Month: