realtechtalk.com


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realtechtalk.com (RealTechTalk (RTT) - Linux/Server Administration/Related We have years of knowledge with technology, especially in the IT (Information Technology)industry. realtechtalk.com will always have fresh and useful information on a variety of subjects from Graphic Design, Server Administration, Web Hosting Industry and much more. This site will specialize in unique topics and problems faced by web hosts, Unix/Linux administrato) was registered first at 2004-07-01 04:52:08. DNS looks Active and website looks Accessable. Domain Moz Rank is 4.3 and SEMRush Rank is 2,048,120. According to Google, website speed score is 74/100 and AVERAGE. Website looks safe for children. We detected the website language as en.
realtechtalk.com


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Title:
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Description:
RealTechTalk (RTT) - Linux/Server Administration/Related We have years of knowledge with technology, especially in the IT (Information Technology)industry. realtechtalk.com will always have fresh and useful information on a variety of subjects from Graphic Design, Server Administration, Web Hosting Industry and much more. This site will specialize in unique topics and problems faced by web hosts, Unix/Linux administrato
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External Links:
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realtechtalk.com Domain & Whois Details

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Domain Create Date:
2004-07-01 04:52:08
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21 years, 0 months, 1 days
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2024-07-01T04:52:08Z
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2024-07-01T04:52:08Z
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PHP/5.3.3
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Nameservers:
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Hosting Location:
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IP:
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realtechtalk.com Backlinks & Rankings

Moz Rank:
4.3
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Moz DA:
29
Moz Domain Authority (DA) is a search engine ranking score developed by Moz that predicts how well a website will rank on search engine result pages. Domain Authority scores range from one to 100, with higher scores corresponding to greater likelihood of ranking.
Moz PA:
43
Moz Page Authority (PA) is Page Authority (PA) is a score developed by Moz that predicts how well a specific page will rank on search engine result pages (SERP). Page Authority scores range from one to 100, with higher scores corresponding to a greater ability to rank.
MOZ Total Links:
24,432
Number of total links (equity or nonequity or not, internal or external) to the URL.
MOZ External Links:
4,566
Number of external equity links to the URL.
SEMRush Rank:
2,048,120
Semrush Rank is a proprietary score that lets you find the domains that are getting the most traffic from organic search.
SEMRush Traffic:
266
Number of users expected to visit the website during the following month.
SEMRush Costs:
26
Estimated price of organic keywords in Google AdWords.
SEMRush URL Links:
592
Number of links to URL according to SemRush.
SEMRush Website Links:
13,521
Number of links to the website according to SemRush.
SEMRush Domain Links:
13,692
Number of links to SemRush Domain.
SEMRush Keywords In Top 100:
2,654
Number of keywords where site in Google's organic search top 100.

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realtechtalk.com Website Speed (Desktop)

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Overall Category:
AVERAGE
The human readable speed "category"
Speed Index:
74
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric].
Cumulative Layout Shift (CLS):
0.05 (FAST)
The Cumulative Layout Shift (CLS) metric measures how much unexpected layout shifts affect the user experience on a page. These layout shifts occur when content moves around without prior user input. CLS
First Contentful Paint (FCP):
2.465 s (AVERAGE)
FCP (First Contentful Paint) measures the time from a user’s navigation to when the browser renders the first bit of content from the DOM. In other words, FCP marks the time at which the first text or image is painted for the user. According to PageSpeed Insights, FCP should occur in under 2 seconds. FCP
Total Size:
12922 KB
Total Size. Large network payloads cost users real money and are highly correlated with long load times.
Server Response Time:
151 ms
Initial server response time. Keep the server response time for the main document short because all other requests depend on it. [Learn more about the Time to First Byte metric](https://developer.chrome.com/docs/lighthouse/performance/time-to-first-byte/).
Final Url:
http://realtechtalk.com/
Canonicalized and final URL for the document, after following page redirects (if any).
Last Date Checked:
7/16/2023 7:32:22 AM
The last time we checked this website.

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realtechtalk.com Website Safety

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Last Check Date:
6/16/2023 4:38:12 AM
Fortiguard:
Shopping
Mcafee Category:
Technical Information
OpenDNS:
BeFirst
Cloudflare DNS:
OK
MyWot Child Safety:
99

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Motherboard Support
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Ready Made Solutions
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References
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Here is the easiest solution way to set your CPU governor to performance to enable turbo mode:
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How can you check your current CPU frequency?
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The easiest way for the current running kernel is:
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1.) Setup Kernel
h3
2.) Setup initrd
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3.) Now Boot
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1.) Stop Docker
h3
2.) Move /var/lib/docker
h3
3.) Edit the Docker daemon file
h3
4.) Restart Docker
h3
Chain FORWARD (policy DROP) target     prot opt source               destination         
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Here is how to fix everything:
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Delete the Docker chains
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What Docker did to our machine with iptables:
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Which Systems/Motherboards/Servers are Supported?
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Solution Just use lscpi -v which will often reveal it in the DeviceName
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Default Dell iDRAC Login Information
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Reset Password Didn't Work and You Can't Login to DRAC still?
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Manual Edit Cannot Disable
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The Host Only Networking Solution
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Step 1 - Enable IP Forwarding + Routing
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Step 2 - Delete the hostonly DHCP server
h3
Step 3 - Enable DNS
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Final Setup Steps  
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Be very careful about what filename you specify in dhcpd.conf if you get an error like this:
h3
Latest Articles
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1.) Backup your /etc/apt/sources.list
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2.) Update to Debian 11
h3
3.) Reboot
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Just use apt-cache policy to find the repo of a package:
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Or use apt show
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# If you have an issue compiling with GCC 10, then try this.
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Solution - Step 1: Install Firmware/Other Stuff We Need
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Step 2 - Compile RTL8821AU Driver
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Final Step
h3
Solution
h3
It's fixed
h3
add nouveau/other driver to blacklist
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i915 Errors
h3
Here is how I fixed it on a Mint/Ubuntu install
h3
1.) First download the latest AMDGPU-Pro driver from here:
h3
2.) Download the installer
h3
3.) Install amdgpu-pro
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4.) Install xorg input
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Errors during amdgpu install
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How an unmounted ecryptfs home directory looks
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How would we backup our ecryptfs system then?
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Ecryptfs Success
h3
Solution, we "run" the array
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Adding a default route is very simple with this command
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How can you delete this default route if you messed it up?
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# If you have an issue compiling with GCC 10, then try this.
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If you are not using secureboot do this:
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Format your EFI/ESP partition
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1.) Install mdadm:
h3
2.) Edit /etc/default grub like this
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rd.auto=1
h3
3.) Update your grub.cfg file
h3
4.) Update your /etc/dracut.conf
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5.) Update the existing initramfs files
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If you've done something wrong configuring your CentOS 7 8 mdadm RAID array you'll see something lik
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If using two NICs on the OpenVPN Server you will need to enable proxy_arp for the arp entry to appea
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One more important tricky thing to remember!
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Network Option 1.)
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Network Option 2.)
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We will use the handy utilities from easy-rsa that were installed above when we installed OpenVPN:
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Use init-pki to get started
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Generate our DH (Diffie Helman) Exchange Key
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Create CA Signing Authority
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Generate CSR (Certificate Signing Request) based on our CA above
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Create our Server Key
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Let's copy these created key/cert files to /etc/openvpn/:
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type
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Now run this command:
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For remote SSH host (you need pub key auth for it to open without a password)
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or for local directory:
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How does this work?
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What if we forget what Container is Mapped to which Port?
h3
Docker Frozen/Won't Restart Solution
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Docker Stops/Crashes
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Docker Container Cannot Run/Start
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Docker Push Timeout
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1.) Create A Docker swarm
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How can we get / create a token for the Swarm to add a new Worker or Manager later on?
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Check out our swarm!
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Create Our First Docker swarm Enabled Container
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How do we attach ourselves to the console of a Docker swarm Container?
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How to Check/inspect our running Docker swarm service containers
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How To "Scale Up" our Docker Service Container
h3
How To Update Docker Swarm Services Memory and other Options
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How To Delete a Docker swarm Service Container
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Do you need an insecure registry? 
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Use the "commit" command to create your custom image!
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You can add a tag at the same time as committing:
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How To Add The Tag After Committing Already:
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How Can We Backup Our Image and Restore / Move Our Image To Other Docker Nodes/Machines?
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Let's get an httpd (Apache) Docker Image running in a Container and see what happens....
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How can we attach to a container that was created without an interactive terminal?
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Install dbus-x11
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Did that fix it?
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How can we leave, exit detach or disconnect from the console of a container without killing it?
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An example of how efficient Docker is (500 Docker Containers vs 500 VMs)
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If you are using live-build and don't need the security packages you can just disable it with:
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Use libguestfs-tools "virt-sparsify" to fix it, as using qemu-img to copy it does not really help in
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1.) Create the swapfile and allocate the size you want for it (eg. 1G, 10G etc..)
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2.) We then change permissions so only the root user can read and write to it.
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3.) Now turn the "swapfle" into an actual swapspace partition.
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4.) Enable the swap file
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5.) Make it permanent by adding it to /etc/fstab
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6.) Confirm the /etc/fstab is good and does not throw any errors.  
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If your audio is not working and you got this in your syslog:
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Solution:
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Notes before getting started:
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Explanation of bonding in /etc/network/interfaces
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Step 1 - Install Gluster on All Nodes:
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Step 2 - Start Glusterd on All Nodes
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Step 3 - Connect Gluster Nodes
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Step 3 - Create your first Gluster Volume aka Make Bricks!
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Step 4 - Start The Volume
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Step 5 - Let's use our gluster volume!
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Making it permanent / automounting the Gluster Volume upon Boot
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1. Install lxd:
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 2. Configure lxd
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3.) List Available Images for LXC
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4.) Create our first Debian 10 container!
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5.) Working with lxc
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How to Make Config Changes to LXC Containers?
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Issues installing lxd?
h3
Manually install with snap like this to fix it/solution:
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I wondered why an old file played OK and checked using the "file tool":
h3
Then I took an example of some files that didn't play:
h3
Let's remove the ID3 2.4 tag or convert to another version
h3
 An error occurred
h3
Solution
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To fix this issue just run this command:
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Solution:
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How To Enable HA in Proxmox
h3
 Test Your HA
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If you get a 401 ticket error and cannot see your disks, this appears to be an issue in newer versio
h3
If you need to delete your cluster it is easier to start fresh this way:
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Cluster Issues - Node Joined and shows under pvecm status and under "Datacenter" but not under Clust
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Cluster Join Address Has Wrong IP?
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Proxmox Same Certificate Error:
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When I restart a node, another goes down or reboots itself.
h3
Ceph Issues
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Mute / Unmute Fix
h3
Here is the relevant CLI that makes this audio config happen that gets passed to QEMU:
h3
You will get pulseaudio errors like this:
h3
How To Install Ceph
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Let's Create an OSD on a Spare Disk (/dev/sdb on our case) and then Create a Ceph Pool that we can i
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Now let's install a VM on the Ceph Pool we created
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This doesn't work, why not?
h3
You need to do add the drive but without attaching it instead:
h3
Now we can hot add the drive to the OS by referencing the id which we defined as rtt:
h3
Solution
h3
Two Ways To Delete The iptables Rule
h3
1. Let's work from an environment where we can install Ansible on.
h3
Setup Ansible Hosts File
h3
Setup ssh root Username for "lamp" group
h3
Let's make sure things work, let's just ping all hosts (we only have 1 so far)
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More on become from the Ansible documentation:
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Check the uptime or run other shell commands from host1:
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What Is An Ansible Play/PlayBook And How Does It Work?
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What Does A Valid .YAML Play Look Like?
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How do we execute a playbook? (use ansible-playbook)
h3
Format Quiz
h3
Stick To The Facts
h3
Expanding To A Playbook, Let's install the full LAMP stack with a custom index.html!
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Expand Our Playbook To Install Wordpress
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Full Playbook To Install LAMP + Wordpress in Ansible on a Debian/Mint/Ubuntu Based Target
h3
Make It 'More Fancy'
h3
Could we be more efficient?
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What Happens If There Is An Error On A Task?
h3
But wait, don't we need to restart apache to make PHP work, how do we do that?
h3
Fun Stuff, Random ASCII art (cowsay cows):
h3
References:
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Let's check the sudoers file to see the problem.
h3
To fix this the easier way is to run this command as root:
h3
References:
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1. Click on the 3 bars on the top left and then click "Security"
h3
2. Click "Internal users" on the left and then "Create internal user"
h3
3. Enter Details of The Internal user
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4. Scroll to the Bottom right and click "Create"
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Can't See Agent After Adding It:
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1.) Use /var/ossec/agentless/register_host.sh
h3
If you are using pub key authentication run this:
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2.) Edit ossec.conf and add the agentless rule you want
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Note that the agentless XML below will be inside of an ossec_config
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3.) Restart wazuh-manager
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4.) Observe it
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Check the log file:
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View the Agent On The Manager:
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Install the GPG Key and the repo
h3
Install Wazuh with the Specified Manager IP
h3
Enable and Start the Wazuh Agent
h3
Install gnupg to solve the public key error in the install script and run it again
h3
Error: Wazuh Kibana Plugin Could Not Be Installed
h3
Take HE's ping from Hong Kong to Mainland China and Dubai UAE, vs Techrich's pings:
h3
Now compare the screenshots from Techrich to the same IPs which are 117 ms to UAE and 9 ms to China:
h3
Another indicator is the smart variable "Command Timeout":
h3
Hong Kong's World-Class Power
h3
Thanks/Credits:
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Our tests were provided by trusted local Hong Kong VPS Dedicated Server Provider Techrich
h3
Some of the most popular foreign Cloud Providers in Hong Kong include:
h3
Why you should avoid foreign Hong Kong Cloud Providers
h3
Singapore is smaller than Hong Kong
h3
Singapore Typhoons in the Future?
h3
Singapore Sinking/Sea Level Rise
h3
Heat Comparison betweeen Hong Kong and Singapore IDCs (Datacenters)
h3
Singapore Halts New Datacenter Builds
h3
Switzerland Lost Its Banking Privacy, How About Data Privacy?
h3
Europol had Switzerland/Swiss Servers Seized:
h3
Can't connect to OpenVPN server even though we can ping and telnet to the OpenVPN Server
h3
OpenVPN Cannot Find Keys
h3
In newer distros including Debian the config file for the server is stored here:
h3
Let's describe the key elements that server.conf will need to act as a server based on the specs we
h3
This is based on the client we created above which was named "realtechtalk.com" so there will be a .
h3
How To Generate an OpenVPN Client Config File
h3
Resulting OpenVPN Config
h3
Click on advanced to specify the following things:
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Sitemap
h4
About realtechtalk.com


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