To have Cockpit installed on Your Ubuntu 20.04 server you have to do only this simple step:
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# sudo apt install cockpit -y |
After that you can access your Ubuntu server via web browser:
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https://your-server-ip:9090 |
And this is it.
After reinstalling my daily laptop back to Kubuntu (20.10) I needed a software to “burn” ISO to USB stick.
The choice was simple – balenaEtcher.
So this is how I do it:
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echo "deb https://deb.etcher.io stable etcher" | sudo tee /etc/apt/sources.list.d/balena-etcher.list sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 379CE192D401AB61 sudo apt update sudo apt install -y balena-etcher-electron |
And that’s it
Recently I have had some issues with connecting from my laptop running Linux OS (Fedora 30, Xubuntu 19.04) from virt-manager to server running KVM. Virt-Manager keeps asking me for root password, which was very annoying.
The solution was simple – first I had to create ssh keys which then I needed to send to my CentOS(7) server running KVM
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# ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/home/username/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/username/.ssh/id_rsa. Your public key has been saved in /home/username/.ssh/id_rsa.pub. The key fingerprint is: SHA256:1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567 username@laptop The key's randomart image is: +---[RSA 2048]----+ | xxxxxxxxxxxx| | xxxxxxxxxx | | x x x x x x | | xxxxxxxxxx | | x x x x x | | xx xx xx x | | x x x x x x | | xxx x x x x | | xxxxxxxxxxxx | +----[SHA256]-----+ # ssh-copy-id root@192.168.200.50 /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys root@192.168.200.50's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'root@192.168.200.50'" and check to make sure that only the key(s) you wanted were added. |
After that I was able to use Virt-Manager without any asking for password.
Here is a quick install guide how I setup Cockpit on my CentOS 7 servers:
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yum update |
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yum install cockpit cockpit-machines cockpit-packagekit cockpit-dashboard cockpit-system cockpit-storaged -y |
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systemctl enable --now cockpit.socket firewall-cmd --permanent --zone=public --add-service=cockpit firewall-cmd --reload |
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http://your_server_ip:9090 |
And that’s all 😉
There are many instructions and how-to’s regarding installing MS SQL Server 2017 on CentOS 7 but here are my notes about it:
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/opt/mssql |
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/var/opt/mssql/.system /var/opt/mssql/data /var/opt/mssql/log /var/opt/mssql/secrets |
Here is how I have setup my CentOS 7 to work with MS SQL Server only
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yum update |
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yum install -y epel-release |
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curl -o /etc/yum.repos.d/mssql-server.repo https://packages.microsoft.com/config/rhel/7/mssql-server-2017.repo |
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yum install -y mssql-server |
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[root@echo ~]# /opt/mssql/bin/mssql-conf setup Locale pl_PL not supported. Using en_US. Choose an edition of SQL Server: 1) Evaluation (free, no production use rights, 180-day limit) 2) Developer (free, no production use rights) 3) Express (free) 4) Web (PAID) 5) Standard (PAID) 6) Enterprise (PAID) 7) Enterprise Core (PAID) 8) I bought a license through a retail sales channel and have a product key to enter. Details about editions can be found at https://go.microsoft.com/fwlink/?LinkId=852748 Use of PAID editions of this software requires separate licensing through a Microsoft Volume Licensing program. By choosing a PAID edition, you are verifying that you have the appropriate number of licenses in place to install and run this software. Enter your edition(1-8): 3 The license terms for this product can be found in /usr/share/doc/mssql-server or downloaded from: https://go.microsoft.com/fwlink/?LinkId=855862 The privacy statement can be viewed at: https://go.microsoft.com/fwlink/?LinkId=853010 Do you accept the license terms? [Yes/No]:Yes Choose the language for SQL Server: (1) English (2) Deutsch (3) Español (4) Français (5) Italiano (6) 日本語 (7) 한국어 (8) Português (9) Русский (10) 中文 – 简体 (11) 中文 （繁体） Enter Option 1-11: 1 Enter the SQL Server system administrator password: Confirm the SQL Server system administrator password: Configuring SQL Server... The licensing PID was successfully processed. The new edition is [Express Edition]. ForceFlush is enabled for this instance. ForceFlush feature is enabled for log durability. Created symlink from /etc/systemd/system/multi-user.target.wants/mssql-server.service to /usr/lib/systemd/system/mssql-server.service. Setup has completed successfully. SQL Server is now starting. [root@echo ~]# |
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firewall-cmd --zone=public --add-port=1433/tcp --permanent firewall-cmd --reload |
I think this is all … for now 😉 I will try to write something more after I will test it in production.
Hi,
Yesterday my client told that his Prestashop 1.6.x.x don’t send messages from the contact form. Here is what i have done to solve this:
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/themes/YOUR_THEME_NAME/contact-form.tpl |
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<div class="submit"> <button type="submit" name="submitMessage" id="submitMessage" class="button btn btn-default button-medium"><span>{l s='Send'}<i class="icon-chevron-right right"></i>$ </div> |
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<div class="submit"> <input class="hidden" name="url" type="text" value="" /> <input name="contactKey" type="hidden" value="{$contactKey}" /> <button type="submit" name="submitMessage" id="submitMessage" class="button btn btn-default button-medium"><span>{l s='Send'}<i class="icon-chevron-right right"></i>$ </div> |
Quick steps to set it up (I assume you have apache installed):
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# su |
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# nano /etc/httpd/conf.d/userdir.conf |
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# # UserDir: The name of the directory that is appended onto a user's home # directory if a ~user request is received. # # The path to the end user account 'public_html' directory must be # accessible to the webserver userid. This usually means that ~userid # must have permissions of 711, ~userid/public_html must have permissions # of 755, and documents contained therein must be world-readable. # Otherwise, the client will only receive a "403 Forbidden" message. # <IfModule mod_userdir.c> # # UserDir is disabled by default since it can confirm the presence # of a username on the system (depending on home directory # permissions). # #UserDir disabled # # To enable requests to /~user/ to serve the user's public_html # directory, remove the "UserDir disabled" line above, and uncomment # the following line instead: # UserDir public_html </IfModule> # # Control access to UserDir directories. The following is an example # for a site where these directories are restricted to read-only. # <Directory "/home/*/public_html"> AllowOverride FileInfo AuthConfig Limit Indexes Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec #Require method GET POST OPTIONS Require all granted </Directory> |
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# systemctl restart httpd.service |
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# mkdir /home/your_username/public_html # chmod 711 /home/your_username # chown your_username:your_username /home/your_username/public_html # chmod 755 /home/your_username/public_html |
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# setsebool -P httpd_enable_homedirs true # chcon -R -t httpd_sys_content_t /home/your_username/public_html |
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# nano /home/your_username/public_html/index.html |
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<html> <body> Hello! </body> </html> |
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# chmod 644 /home/your_username/public_html/index,html |
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http://localhost/~your_username/ |
and voila! 😉
First of all you have to shutdown VirtualBox machine that you wan’t to clone.
After that create new folder where you wan’t to clone existing vmdk machine to vdi
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$ mkdir new_vm |
After that run this command in terminal:
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$ VBoxManage clonehd --format VDI old_vm_machine.vmdk new_wm/new_vm_machine.vdi |
Wait until the job is done and… that’s all.
Today i have to connect to Windows share from CentOS 7. This is how I done it:
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# yum install samba samba-client cifs-utils |
then I have created directory in /mnt
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# cd /mnt # mkdir smb_share |
after that:
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# mount.cifs //ip_address/windows_share smb_share/ -v -o user=username,pass="secretpass",sec=ntlm |
That’s all 🙂
Recently I have been in the UK, in a company where many users are connecting to my company server data via VPN and they have told me, that they have problems with OpenVPN client running on Windows 10.
First problem was with OpenVPN client version because, the newest client requires Administrator rights to start. The working version in my case was 32bit and 64bit versions.
The second problem was that after one hour the connection was closing down. Solution for that was easy. I had to only add those two lines
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keepalive 10 60 ping-timer-rem |
to openvpn config file – and that’s it. After one hour the connection was still up and runnig !
Cheers!