Windows:
Double-click the WowzaStreamingEngine-4.5.0-windows-installer.exe installer file and follow the onscreen instructions.
To run Wowza™ Transcoder on Windows Server 2008 or 2012 the following components are required:
- .NET Framework 3.5.1
- Desktop Experience

Linux 64

sudo chmod +x WowzaStreamingEngine-4.5.0-linux-x64-installer.run sudo ./WowzaStreamingEngine-4.5.0-linux-x64-installer.run

follow Instruction

Linux 32

sudo chmod +x WowzaStreamingEngine-4.5.0-linux-installer.run sudo ./WowzaStreamingEngine-4.5.0-linux-installer.run

Crack installation:

1. Download the installer for Linux/Windows from Wowza website

2. Install as normal with trial key (just for get the installation done): ET1A4-CyFTr-erYEd-pAAwE-dzut4-BkNZZ-6fdJKYCMTUDV

3. Stop the Wowza Services:

3.1 Wowza Streaming Engine as described bellow

3.2 Wowza Streaming Engine Manager as described bellow

4. Download the crack file "wowza4.5.0_crack.zip ", unpack it. It does contains "wms-server.jar" file.

5. Replace wms-server.jar with original file at:

5.1 On Windows OS: "C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.5.0\lib"

5.2 On Linux OS: "/usr/local/WowzaStreamingEngine-4.5.0/lib/"

6. Add following lines to yor System hosts file (you need admin or root permissions)

6.1 On Windows OS: "C:\Windows\System32\drivers\etc\hosts"

6.2 On Linux OS: "/etc/hosts"

# Wowza 127.0.0.1 wowzalicense1.wowzamedia.com 127.0.0.1 wowzalicense2.wowzamedia.com 127.0.0.1 wowzalicense3.wowzamedia.com 127.0.0.1 wowzalicense4.wowzamedia.com

7. Start the Wowza Services:

7.1 Wowza Streaming Engine as described bellow

7.2 Wowza Streaming Engine Manager as described bellow

8. Open Streaming Engine Manager

http://SERVER_IP:8088/enginemanager/

9. Enjoy and Keep Private

Rabu, 08 Juni 2022

centos, debian, linux, samba, server

Samba Management User

Juni 08, 2022 No comments

Menambahkan User

# useradd cosinusteta

Menambahkan Password User

# passwd cosinusteta

Menambahkan Samba User

# smbpasswd -a cosinusteta

# New SMB password :

# Retype SMB password :

Merubah Password Samba User

# smbpasswd cosinusteta

# New SMB password :

# Retype SMB password :

Delete Samba User password

# smbpasswd -x cosinusteta

delete unix user(cosinusteta) by userdel

Menghapus User System

# userdel -r cosinusteta

Menambahkan User ke dalam Group

# sudo usermod -a -G namagrup username

Kamis, 27 Januari 2022

centos, database, fedora, linux, migration, rsync, server, server to server

server to server migration with rsync

Januari 27, 2022 No comments

What is rsync?

rsync is a way to transfer and synchronize files efficiently between one server and another and only different files are synced. The rsync command is very suitable to be used as a backup, because only different files will be synchronized, so it will save more time and resources.

How to Install rsync on server Linux

install rsync on server Debian/ Ubuntu

apt-get install rsync

install rsync on server Centos/ Fedora

yum install rsync

How to Use rsync

Transfer File Server to Server with RSYNC on port 22

for migration file

rsync filehosteko.zip root@xxx.xxx.xxx.xxx:/home/folder

for migration Directory/ Folder

rsync -avzh folderhost root@xxx.xxx.xxx.xxx:/home/folder

info:
folderhost: folrder you want to migrate/copy
xxx.xxx.xxx.xxx= destination IP server

Transfer File Server to Server with RSYNC with Custom port

for migration file

rsync -e 'ssh -p 1234' filehost.zip root@xxx.xxx.xxx.xxx:/home/folder

for migration Directory/ Folder

rsync -avzh -e 'ssh -p 1234' folderhost root@xxx.xxx.xxx.xxx:/home/folder

info:
folderhost= folder you want to migrate/copy

1234 = destination Port SSH

xxx.xxx.xxx.xxx= destination IP server

Senin, 09 November 2020

can't access phpmyadmin, centos, centos web panel, cwpsrv, error 404 not found, phpmyadmin

Error 404 Not Found cwpsrv phpmyadmin - Centos Web Panel

November 09, 2020 No comments

solving problem Error 404 cwpsrv phpmyadmin - Centos Web Panel
1. login to root account via putty / terminal

2. update yum server

yum -y update

3. update phpmyadmin

sh /scripts/mysql_phpmyadmin_update

Sabtu, 02 Mei 2020

centos, firewalls, port, ssh

Change SSH port in CWP

Mei 02, 2020 No comments

CWP comes with the OpenSSH server. This is using by default port 22. CWP doesn’t modify this at installation time but notifies you to change it as soon as possible. The message looks like:

WARNING: Security vulnerability! Your server is using default SSH Port 22, to make your server more secure change SSH port in config file /etc/ssh/sshd_config and in CSF firewall ! After changes are done don’t forget to restart SSH and CSF Firewall.

To modify the SSH port on CentOs Web Panel:

Login to CWP at https://domainname.com:2087 (port 2087 is for a secure connection)
Go to Services Config->SSH Configuration
This will open for editing the file /etc/ssh/sshd_config
Look for the line:

#Port 22

and change the port number to something else, like 2211; also remove the # character from the beginning of the line. In the end, you will have:

Port 2211

Click the Save changes button
Go to the Dashboard and restart the SSH server.
Go to Security->CSF Firewall, click the Firewall Configuration button
Look for the # Allow incoming TCP ports section and add your port number to the list.
Click the Save changes button
Go to Security->CSF Firewall, click the Firewall Restart button
Now you will be able to connect to the server via SSH using the new port number
The short video tutorial for this KB article:

sumber : plothost.com

if the login fault, try this

semanage port -l | grep ssh

and if output is 22

semanage port -a -t ssh_port_t -p tcp 2222

than, finally

semanage port -l | grep ssh

and show the port used ssh_port_t

Kamis, 16 April 2020

centos, firewalls, port

default ports on the CentOS servers

April 16, 2020 No comments

List of mostly used default ports on the CentOS servers

Port Number - Name
20 - FTP
21 - FTP
22 - SSH
25 - SMTP/EMAIL
26 - SMTP
43 - WHOIS
53 - BIND/DNS
80 - HTTP / Apache Web server
110 - POP3/EMAIL
143 - IMAP
443 - HTTPS / Apache Web server SSL
465 - SMTP/EMAIL SSL/TLS
873 - RSYNC
993 - IMAP/EMAIL SSL
995 - POP3/EMAIL SSL
2030 - CWP Admin
2031 - CWP Admin SSL
2082 - CWP User Panel
2083 - CWP User Panel SSL
2086 - CWP Admin (same as 2030)
2087 - CWP Admin SSL (same as 2031)
2304 - CWP External API SSL (https, only for api access like whmcs )
3306 - MYSQL

sumber : wiki.centos

Senin, 30 Maret 2020

centos, memory, swap

How To Add Swap on CentOS 7

Maret 30, 2020 No comments

Introduction

One of the easiest ways to make your server more responsive, and guard against out-of-memory errors in your application, is to add some swap space. Swap is an area on a storage drive where the operating system can temporarily store data that it can no longer hold in memory.

This gives you the ability to increase the amount of information that your server can keep in its working memory, with some caveats. Reading from and writing to swap is slower than using memory, but it can provide a good safety net for when your server is low on memory.

Without swap, a server that runs out of memory may start killing applications to free up memory, or even crash. This can cause you to lose unsaved data or experience downtime. To ensure reliable data access, some applications require swap to function.

In this guide, we will cover how to create and enable a swap file on a CentOS 7 server.

Note



Although swap is generally recommended for systems utilizing traditional spinning hard drives, using swap with SSDs can cause issues with hardware degradation over time. Due to this consideration, we do not recommend enabling swap on DigitalOcean or any other provider that utilizes SSD storage. Doing so can impact the reliability of the underlying hardware for you and your neighbors.



If you need to improve the performance of your server, we recommend upgrading your Droplet. This will lead to better results in general and will decrease the likelihood of contributing to hardware issues that can affect your service.

Prerequisites

Before you begin with this guide, there are a few steps that need to be completed first.

You will need a CentOS 7 server installed and configured with a non-root user that has sudo privileges. If you haven’t done this yet, you can run through steps 1-4 in the CentOS 7 initial server setup guide to create this account.

Once you have your non-root user, you can use it to SSH into your CentOS server and continue with the installation of your swap file.

Check the System for Swap Information
Before we begin, we should take a look at our server’s storage to see if we already have some swap space available. While we can have multiple swap files or swap partitions, one should generally be enough.

We can see if the system has any configured swap by using swapon, a general-purpose swap utility. With the -s flag, swapon will display a summary of swap usage and availability on our storage device:

swapon -s

If nothing is returned by the command, then the summary was empty and no swap file exists.

Another way of checking for swap space is with the free utility, which shows us the system’s overall memory usage. We can see our current memory and swap usage (in megabytes) by typing:

free -m

              total       used       free     shared    buffers     cached
Mem:          3953        315       3637          8         11        107
-/+ buffers/cache:        196       3756
Swap:            0          0       4095

As you can see, our total swap space in the system is 0. This matches what we saw with swapon.

Check Available Storage Space

The typical way of allocating space for swap is to use a separate partition that is dedicated to the task. However, altering the partition scheme is not always possible due to hardware or software constraints. Fortunately, we can just as easily create a swap file that resides on an existing partition.

Before we do this, we should be aware of our current drive usage. We can get this information by typing:

df -h

Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        59G  1.5G   55G   3% /
devtmpfs        2.0G     0  2.0G   0% /dev
tmpfs           2.0G     0  2.0G   0% /dev/shm
tmpfs           2.0G  8.3M  2.0G   1% /run
tmpfs           2.0G     0  2.0G   0% /sys/fs/cgroup

Note: the -h flag simply tells dh to output drive information in a human-friendly reading format. For example, instead of outputting the raw number of memory blocks in a partition, df -h will tell us the space usage and availability in M (for megabytes) or G (for gigabytes).

As you can see on the first line, our storage partition has 59 gigabytes available, so we have quite a bit of space to work with. Keep in mind that this is on a fresh, medium-sized VPS instance, so your actual usage might be very different.

Although there are many opinions about the appropriate size of a swap space, it really depends on your application requirements and your personal preferences. Generally, an amount equal to or double the amount of memory on your system is a good starting point.

Since my system has 4 gigabytes of memory, and doubling that would take a larger chunk from my storage space than I am willing to part with, I will create a swap space of 4 gigabytes to match my system’s memory.

Create a Swap File

Now that we know our available storage space, we can go about creating a swap file within our filesystem. We will create a file called swapfile in our root (/) directory, though you can name the file something else if you prefer. The file must allocate the amount of space that we want for our swap file, and it should be created in one contiguous block.

The best way to do this is to use the dd utility. This command will create a 4 gigabyte file:

sudo dd if=/dev/zero of=/swapfile count=4096 bs=1MiB

After entering your password to authorize sudo privileges, the swap file will be created. This can take a few moments, then the prompt will be returned to you. We can verify that the correct amount of space was reserved for swap by using ls:

ls -lh /swapfile

-rw-r--r-- 1 root root 4.0G Oct 30 11:00 /swapfile

As you can see, our swap file was created with the correct amount of space set aside.

Enable a Swap File

Right now, our file is created, but our system does not know that this is supposed to be used for swap. We need to tell our system to format this file as swap and then enable it.

Before we do that, we should adjust the permissions on our swap file so that it isn’t readable by anyone besides the root account. Allowing other users to read or write to this file would be a huge security risk. We can lock down the permissions with chmod:

sudo chmod 600 /swapfile

This will restrict both read and write permissions to the root account only. We can verify that the swap file has the correct permissions by using ls -lh again:

ls -lh /swapfile

-rw------- 1 root root 4.0G Oct 30 11:00 /swapfile

Now that our swap file is more secure, we can tell our system to set up the swap space for use by typing:

sudo mkswap /swapfile

Setting up swapspace version 1, size = 4194300 KiB
no label, UUID=b99230bb-21af-47bc-8c37-de41129c39bf

Our swap file is now ready to be used as a swap space. We can begin using it by typing:

sudo swapon /swapfile

To verify that the procedure was successful, we can check whether our system reports swap space now:

swapon -s

Filename                Type        Size    Used    Priority
/swapfile               file        4194300 0     -1

This output confirms that we have a new swap file. We can use the free utility again to corroborate our findings:

free -m

             total       used       free     shared    buffers     cached
Mem:          3953        315       3637          8         11        107
-/+ buffers/cache:        196       3756
Swap:         4095          0       4095

Our swap has been set up successfully, and our operating system will begin to use it as needed.

Make the Swap File Permanent

Our swap file is enabled at the moment, but when we reboot, the server will not automatically enable the file for use. We can change that by modifying the fstab file, which is a table that manages filesystems and partitions.

Edit the file with sudo privileges in your text editor:

sudo nano /etc/fstab

At the bottom of the file, you need to add a line that will tell the operating system to automatically use the swap file that you created:

/swapfile   swap    swap    sw  0   0

When you are finished adding the line, you can save and close the file. The server will check this file on each bootup, so the swap file will be ready for use from now on.

Tweak Your Swap Settings (Optional)

There are a few options that you can configure that will have an impact on your system’s performance when dealing with swap. These configurations are optional in most cases, and the changes that you make will depend on your application needs and your personal preference.

Swappiness

The swappiness parameter determines how often your system swaps data out of memory to the swap space. This is a value between 0 and 100 that represents the percentage of memory usage that will trigger the use of swap.

With values close to zero, the system will not swap data to the drive unless absolutely necessary. Remember, interactions with the swap file are “expensive” in that they are a lot slower than interactions with memory, and this difference in read and write speed can cause a significant reduction in an application’s performance. Telling the system not to rely on the swap as much will generally make your system faster.

Values that are closer to 100 will try to put more data into swap in an effort to keep more memory free. Depending on your applications’ memory profile, or what you are using your server for, this might be the better choice in some cases.

We can see the current swappiness value by reading the swappiness configuration file:

cat /proc/sys/vm/swappiness

CentOS 7 defaults to a swappiness setting of 30, which is a fair middle ground for most desktops and local servers. For a VPS system, we’d probably want to move it closer to 0.

We can set the swappiness to a different value by using the sysctl command. For instance, to set the swappiness to 10, we could type:

sudo sysctl vm.swappiness=10

vm.swappiness = 10

This setting will persist until the next reboot. To make the setting persist between reboots, we can add the outputted line to our sysctl configuration file:

sudo nano /etc/sysctl.conf

Add your swappiness setting to the bottom of the file:

vm.swappiness = 10

When you are finished adding the line, you can save and close the file. The server will now automatically set the swappiness to the value you declared on each bootup.

Cache Pressure

Another related value that you might want to modify is the vfs_cache_pressure. This setting affects the storage of special filesystem metadata entries. Constantly reading and refreshing this information is generally very costly, so storing it on the cache for longer is excellent for your system’s performance.

You can see the current value of this cache pressure by querying the proc filesystem again:

cat /proc/sys/vm/vfs_cache_pressure

As it is currently configured, our system removes inode information from the cache far too quickly. We can set this to a more conservative setting, like 50, by using sysctl:

sudo sysctl vm.vfs_cache_pressure=50

vm.vfs_cache_pressure = 50

Again, this is only valid for our current session. We can change that by adding it to our configuration file, like we did with our swappiness setting:

sudo nano /etc/sysctl.conf

At the bottom, add the line that specifies your new value:

vm.vfs_cache_pressure = 50

When you are finished adding the line, you can save and close the file. The server will now automatically set the cache pressure to the value you declared on each bootup.

Conclusion
By following the steps in this guide, you will have given your server some breathing room in terms of memory usage. Swap space is incredibly useful in avoiding some common problems.

If you are running into OOM (out of memory) errors, or if you find that your system is unable to use the applications that you need, the best solution is to optimize your application configurations or upgrade your server. However, configuring swap space can give you more flexibility and can help buy you time on a less powerful server.

sumber : DO

#Near Future

Learn to Knowledge

Jumat, 23 September 2022

Memperbaiki GDBus.Error:org.freedesktop.PolicyKit1

Kamis, 15 September 2022

WMS 4.5 on Centos 7