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Friday, April 28, 2017

AzureRM - Powershell Notes

Run POWERSHELL as admin

Get Verison of PowerShellGet

Get-Module PowerShellGet -list | Select-Object Name,Version,Path

What is PowerShellGet
https://blogs.msdn.microsoft.com/mvpawardprogram/2014/10/06/package-management-for-powershell-modules-with-powershellget/

I had to use –allowclobber to force the install.

Install-Module AzureRM (–allowclobber)

Load the module

Import-Module AzureRM

Login to azure

Login-AzureRmAccount

Get-AzureRmSubscription

Set-AzureRmContext -SubscriptionName "Example Subscription Two"

New-AzureRmResourceGroup -Name TestRG1 -Location "South Central US"

Get-AzureRmResourceGroup -ResourceGroupName TestRG1

Get-AzureRmResourceGroup
(returns all ResourceGroups)

References:

https://docs.microsoft.com/en-us/powershell/azure/install-azurerm-ps?view=azurermps-3.8.0

https://docs.microsoft.com/en-us/powershell/azure/overview?view=azurermps-3.8.0

https://docs.microsoft.com/en-us/azure/azure-resource-manager/powershell-azure-resource-manager


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Tuesday, April 25, 2017

Setting up DNS on openwrt on TL-WDR4300

Found a couple of articles that helped, referenced below. Had to connect to router via SSH, as luci does not have the interface for the added packages.

Note: I was unable to install the dhcp server  in the article, although I did manage to install another dhcp package. This said I do not use dhcp and I didnot test whether dhcp worked.

This did not install

opkg install isc-dhcp-server-ipv4

I was able to install the following package from the openwrt site.

opkg install https://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/packages/dhcpcd_6.4.3-1_ar71xx.ipk

We remove the dnsmasq service which is a combined DHCP and DNS (forwarder) server and replace this with separate DNS and DHCP services.

I then followed the article

https://maroskukan.wordpress.com/2015/02/24/openwrt-spinning-up-authoritative-dns-server/

Changing values where needed (examples below)

I used the following acl in the named.conf file, note two ip ranges as my router is setup as a bridging client.

acl "trusted" {
     192.168.75.0/24;
     172.75.75.0/24;
     localhost;
     localnets;
};

options {
        directory "/tmp";
        recursion yes;
        allow-recursion { trusted; };
        allow-transfer { trusted; };
        allow-query-cache { trusted; };
        // If your ISP provided one or more IP addresses for stable
        // nameservers, you probably want to use them as forwarders.
        // Uncomment the following block, and insert the addresses replacing
        // the all-0's placeholder.

        forwarders {
                192.168.75.1;
        };

        auth-nxdomain no;    # conform to RFC1035
};

Created folder to hold the zone files

mkdir /etc/zones
using existing zone files as templates.
cp /etc/bind/db.local /etc/bind/zones/db.homedomain.local
for reverse lookup (two zones as I have created two subnets)
cp /etc/bind/db.127 /etc/bind/zones/db.75.168.192
cp /etc/bind/db.127 /etc/bind/zones/db.75.75.172
Then edited the files for my needs

;
; BIND data file for reverse look up of 192.168.75/24
;
$TTL    604800
@       IN      SOA     homedomain.local. root.homedomain.local. (
                             10         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@      IN      NS      router.homedomain.local.
11     IN      PTR     machine1.homedomain.local.
18     IN      PTR     router.homedomain.local.
110    IN      PTR     machine3.homedomain.local.

;
; BIND data file for reverse look up of 172.75.75/24
;
$TTL    604800
@       IN      SOA     homedomain.local. root.homedomain.local. (
                             10         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      router.homedomain.local.
1       IN      PTR     router.homedomain.local.
2       IN      PTR     machine4.homedomain.local.
10      IN      PTR     machine5.homedomain.local.

 

;
; BIND data file for homedomain.local zone
;
$TTL    604800
@       IN      SOA     homedomain.local. root.homedomain.local. (
                             10         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      router.homedomain.local.
@       IN      A       192.168.75.18
router  IN      A       192.168.75.18
machine4        IN      A       172.75.75.2
machine5        IN      A       172.75.75.10
machine3        IN      A       192.168.75.110
machine1        IN      A       192.168.75.11


https://wiki.openwrt.org/doc/howto/dns.bind

https://maroskukan.wordpress.com/2015/02/24/openwrt-spinning-up-authoritative-dns-server/

http://blog.differentpla.net/blog/2013/10/30/replacing-dnsmasq-on-openwrt

https://kb.isc.org/article/AA-00269/0/What-has-changed-in-the-behavior-of-allow-recursion-and-allow-query-cache.html


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