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DSTV Now on Amazon Fire TV Stick

Hopefully this tutorial will help others in South Africa get DSTV now running on a Fire TV Stick. The latest version of DSTV Now requires a newer version of Google Play Services to work.  Im not 100% sure whether this too requires the Google Playstore to operate, but Ive included links to a newer version of this as well. There are a number of ways of installing apk files on the fire sticks.  Ive found the simplest is by using the adb options built into the fire stick tv.  Another simple way is to get the downloader app installed on your device and install the packages one by one.  In order to get the system ready for adb following the tutorial supplied by amazon here .  Once ready download the adblink software from here    There are clients for windows mac and inux. Goolge Account Manager 5.1.1743759 Short Link:   http://bit.ly/2bMbGEg Long Link :  http://www.apkmirror.com/apk/google-inc/google-account-manager/google-account-manager-5-1-1743759-release/google-account-manage
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ElasticSearch - Useful commands

Below is a list of command that may / may not help for running / troubleshooting your elasticsearch cluster. replace localhost with the ip address of your elasticsearch hosts if its not listening on localhost. ClusterHealth curl -XGET 'http://localhost:9200/_cluster/health?pretty' Delete an Index curl -XDELETE 'localhost:9200/index_name*?pretty' -d ' {   "acknowledged" : true } Find unassigned shards curl -XGET localhost:9200/_cat/shards?h=index,shard,prirep,state,\ unassigned.reason| grep UNASSIGNED   I'll add more as and when I come across them.        
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Zabbix - Monitoring VSphere Server

I found the best way to monitor a vsphere host is the following. First create a readonly user on vsphere. Logon to vshere with root or another administrator account. Click on Inventory Click on Local Users & Group Right click and Select Add Enter the Login:  User Name: and Password Credentails. Once the user has been created click on the Permissions tab. Right click and select Add Permission Click the Add button and select your newly created user. click on Ok to save. Test the read only account by logging out and using the credentials to log onto vsphere. Next we need the sphere UUID to ensure that our zabbix template works as expected. Access the following url https://{vsphere_server_ip}/mob/?moid=ha-host&doPath=hardware.systemInfo enter the readonly credentais when prompted. copy the uuid string from within the displayed data. Within Zabbix - go to Configuration->Hosts and click on Create Host Under the host name paste the copied uuid from
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Zabbix - adding apt update checks

Theres a number of articles on the internet on adding checks to package updates for Zabbix and Nagios.  I found the simplest way of doing this on Ubuntu is to use the update-notifier app-check application.   If you run /usr/lib/update-notifier/apt-check it will output the number of packages requiring updates as well as the number of security updates requiring updates. To apply this check to Zabbix add the following to a conf file within your zabbix_agentd.d directory. cd /etc/zabbix/zabbix_agentd.d vi apt_updates.conf  or something meaningfule  add the following content UnsafeUserParameters=1 Timeout=10 UserParameter=apt.available.updates,updates=$(/usr/lib/update-notifier/apt-check 2>&1);echo $updates | cut -d ";" -f 1 UserParameter=apt.security.updates,updates=$(/usr/lib/update-notifier/apt-check 2>&1);echo $updates | cut -d ";" -f 2 restart your zabbix agent The Timeout=10 is required as the script runs for a couple of seconds
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Raspberry PI - Temperature monitoring with Zabbix

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A raspberry pi is a good cheap way of getting temperature monitoring in your data centre or home.  You will need a raspberry pi, temperature sensor (DS18B20) and a  4.7k Ω (ohm) resistor . After adding the sensor you need to load the necessary kernel modules. modprobe w1_gpio modprobe w1_therm First make sure the kernel has the correct parameters to read the sensor on boot. cd /boot vi config.txt add dtoverlay=w1-gpio,gpiopin=4 save the file reboot After rebooting you should now have a new directory under /sys/bus/w1/devices. The directory will contain a number of files, but the one we are looking for is w1_slave. If you cat the file the contents look something similar to this b1 01 4b 46 7f ff 0f 10 8d : crc=8d YES b1 01 4b 46 7f ff 0f 10 8d t=27062 The last line contains the temperature t=27062 in degrees celcius multiplied by 1000. Below is a simple script that will read the time from the file divide it by 1000 and output the current temperature. /bin/cat
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Zabbix for Monitoring and More

After a year of using Sensu to monitor our infrastructure,  Ive reverted back to using the old faithful Zabbix, sensu worked but wasnt as simple and problem free as zabbix was.  We are doing a few things different this time.  We are not running Zabbix on a pc or dedicated hardware, but rather running it on a virtual server running within our Vcentre cluster and backed up by Veeam 9 .  We therefor do not need to worry about hardware failures or performance issues, we can easily increase memory or cpu if required.  We are also using zabbix proxies to monitor the remote branches, this works significantly better than it did the last time and updates etc are filtered back even if the link between the branch offices is interupted. Below is a simple howto to get a distributed zabbix monitoring system up and running. Feel free to add comments or suggestions on how to improve this howto. Master Node Install ubuntu 16.04lts     Make sure you update your newly installed system with the
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Location: South Africa
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Update Openvas Feeds

To ensure openvas 9 is kept up to date and running the latest tests,  you need to sync the nvt, scap and cert data.  The best way to do this is to create a script that sync's the necessary data. Create a script under /usr/local/bin called update-openvas vi /usr/local/bin/update-openvas add the following contents to the file /usr/sbin/greenbone-nvt-sync /usr/sbin/greenbone-certdata-sync /usr/sbin/greenbone-scapdata-sync /usr/sbin/openvasmd --update --verbose --progress /etc/init.d/openvas-manager restart /etc/init.d/openvas-scanner restart save the file and make it executeable chmod a+x /usr/local/bin/update-openvas run the script to make sure it works and that there are no errors /usr/local/bin/update-openvas add the script to cron to run daily crontab -e add the following contents 1 1 * * * /usr/local/bin/update-openvas 1>/dev/null 2>/dev/null  the above cronjob will be run at 1 minute past 1 every day
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