Find centOS version:
cat /etc/centos-releaseRHEL:
cat /etc/redhat-releaseiperf test
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iPerf3 from iPerf.fr:
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iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, buffers and protocols (TCP, UDP, SCTP with IPv4 and IPv6).
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For each test it reports the bandwidth, loss, and other parameters. This is a new implementation that shares no code with the original iPerf and also is not backwards compatible.
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iPerf was orginally developed by NLANR/DAST. iPerf3 is principally developed by ESnet / Lawrence Berkeley National Laboratory. It is released under a three-clause BSD license.
Install iperf Debian
apt-get install iperf3Starting a local server is not necessary if testing to a remote server.Example test server:
iperf -c ping.online.net -i 2 -t 20 -r
Start iperf server
To start Iperf in server mode, use the below command.
iperf -s
Start server in daemon mode
Running the server without daemon mode keeps the process running in the terminal. Use the -D switch to run it as a daemon in the background.
iperf -s -D
Connecting to server from client
Iperf needs to run on the local host in client mode, as well as in server mode on the remote host. To connect to the remote host, add it’s IP address after the -c switch.
iperf -c <ip or host/domain name>Bi-directional simultaneous (test the speed both ways at the same time)
Use the -d switch to test in the network bandwidth in both directions. This will perform two tests; one from local host to remote host, and another from the remote host to the local host.
iperf -c <ip or host/domain name> -d
Bi-directional testing (test the speed both one after another)
Use the -r switch to test in the network bandwidth in both directions. This is similar to -d except the tests will be performed in sequence; first from local host to remote host, and another from the remote host to the local host.
iperf -c <ip or host/domain name> -rChange the window size
The TCP window size can be changed using the -w switch followed by the number of bytes to use. the below example shows a window size of 2KB. This can be used on either the server or the client.
iperf -c <ip or host/domain name> -w 2048 iperf -s -w 2048
Change the port
You must use the same port on both the client and the server for the two processes to communicate with each other. Use the -p switch followed by the port number to use on both the local and remote host.
iperf -c <ip or host/domain name> -p 9000 iperf -s -p 9000
Change the test duration
The default test duration of Iperf is 10 seconds. You can override the default with the -t switch followed by the time in seconds the test should last.
iperf -s -t 60
UDP instead of TCP
The default protocol for Iperf to use is TCP. You can change this to UDP with the -u switch. You will need to run both the client and server in UDP mode to perform the tests.
iperf -s -u iperf -c -uThe result will have an extra metric for the packet loss which should be as low as possible, otherwise the packets will have to be re-transmitted using more bandwidth.
Run multiple threads
Iperf can spawn multiple threads to simultaneously send and receive data. Use the -P switch followed by the number of threads to use.
iperf -c -P 4
Check the version of Iperf
Use the -v switch to see the version of Iperf you have installed.
iperf -v
See the full list of arguments
Use the -h switch to see the full list of arguments supported by Iperf.
iperf -hA nice list of iPerf servers can be found at iPerf.fr
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755 - Owner has all permissions, and Group and Other can read and execute 700 - Owner has all permissions 644 - Owner can read and write, and Group and Other can read 600 - Owner can read and write 775 - Owner can read and write, and Group and Other can read 770 - Owner and Group have all, and Other can read and execute 750 - Owner has all permissions, and Group can read and execute 664 - Owner and Group can read and write, and Other can just read 660 - Owner and Group can read and write 640 - Owner can read and write, and Group can read
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Re: Find or Locate a file or extension command line
Install locate command linux: Use your sudo command!
apt install mlocateOR:
apt-get install mlocateOR:
yum install mlocateUpdate the database:
updatedbDepending on the size of the complete filesystem this could take a few minutes
After the database has been populated:
locate mariadbWhere mariadb is the word your looking for
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These commands are if you are in the scripts directory! Changing permissions can be done from anywhere in the structure.
Such as :
chmod +x /opt/so-elastic-agent_linux_amd64Terminal chmod to executable :
Permissions prior to chmod :
chmod +x so-elastic-agent_linux_amd64
Permissions following chmod :
Then execute :
./so-elastic-agent_linux_amd64Insure you are acting as the user you just gave permissions to (the file owner) or at least have sudo privileges
To make the script un-executable:
chmod -x so-elastic-agent_linux_amd64
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sudo apt install lsb-release ca-certificates curl -y
GPG key and repo for php 7.4
sudo curl -sSLo /usr/share/keyrings/deb.sury.org-php.gpg https://packages.sury.org/php/apt.gpg sudo sh -c 'echo "deb [signed-by=/usr/share/keyrings/deb.sury.org-php.gpg] https://packages.sury.org/php/ $(lsb_release -sc) main" > /etc/apt/sources.list.d/php.list'Update the system with the new repository in place
sudo apt updateInstall the dependencies for OwnCloud (LAMP ect) Certbot, or LetsEncrypt is being installed as well, if you are using this installation in a public domain
sudo apt install apache2 mariadb-server imagemagick certbot python3-certbot-apache smbclient redis-server unzip rsync libapache2-mod-php7.4 php7.4 php7.4-intl php7.4-mysql php7.4-mbstring php7.4-imagick php7.4-igbinary php7.4-gmp php7.4-bcmath php7.4-curl php7.4-gd php7.4-zip php7.4-imap php7.4-ldap php7.4-bz2 php7.4-ssh2 php7.4-common php7.4-json php7.4-xml php7.4-dev php7.4-apcu php7.4-redis libsmbclient-dev php-pear php-phpseclibEnable apache2 and then verify it’s status
sudo systemctl is-enabled apache2 sudo systemctl status apache2
sudo systemctl is-enabled mariadb sudo systemctl status mariadb
Enable MariaDB and verify status
sudo systemctl is-enabled redis sudo systemctl status redis
Enable Redis and verify status
Configure default php version
sudo update-alternatives --config php
Configure php OwnCloud dependencies
sudo update-alternatives --set phar /usr/bin/phar7.4 sudo update-alternatives --set phar.phar /usr/bin/phar.phar7.4 sudo update-alternatives --set phpize /usr/bin/phpize7.4 sudo update-alternatives --set php-config /usr/bin/php-config7.4Upgrade Pear to OwnCloud4 requirements
sudo mkdir -p /tmp/pear/cache sudo pear upgrade --force --alldeps http://pear.php.net/get/PEAR-1.10.13
sudo pear clear-cache sudo pear update-channels sudo pear upgrade --force sudo pear upgrade-all
Verify Pear version
pear version
Configure MariaDB
sudo mariadb-secure-installation
Log into MariaDB
sudo mariadb -u root -pCreate the OwnCloud database:
This is where many go wrong, we do not use ‘password’ we replace password, with our own password.
CREATE DATABASE owncloud;We just created a database with the name owncloud
CREATE USER IF NOT EXISTS 'owncloud'@'localhost' IDENTIFIED BY 'password';We just created a database user called owncloud
GRANT ALL PRIVILEGES ON owncloud.* TO 'owncloud'@'localhost' WITH GRANT OPTION;We just allowed user owncloud, full privileges on database owncloud
FLUSH PRIVILEGES;Now verify what we have just done:
SHOW GRANTS FOR 'owncloud'@'localhost';You can see below I named this database ‘oc’ and the ‘oc’ user has privileges on database ‘owncloud’
quit;
wget the OwnCloud source
cd /var/www wget https://download.owncloud.com/server/stable/owncloud-complete-latest.tar.bz2Grab sha256 to verify the download
wget https://download.owncloud.com/server/stable/owncloud-complete-latest.tar.bz2.sha256BEFORE installing, verify if the download of OwnCloud matches what the OwnCloud team wanted you to have, this is important always.
sudo sha256sum -c owncloud-complete-latest.tar.bz2.sha256 < owncloud-complete-latest.tar.bz2Out put should say ‘OK’ if everything matches.
Change ownership of the directory to www-data user.
sudo chown -R www-data:www-data /var/www/owncloudConfigure Vhost for OwnCloud
This will open a new file in 'sites-available and name this file ‘owncloud.conf’
Change the ServerName and ServerAlias, as well as log file names, to whatever your domain is. There are many ways to do this keep in mind.
sudo nano /etc/apache2/sites-available/owncloud.conf <VirtualHost *:80> ServerName oc ServerAlias www.oc DocumentRoot /var/www/owncloud ErrorLog ${APACHE_LOG_DIR}/oc.io-error.log CustomLog ${APACHE_LOG_DIR}/oc.io-access.log combined Alias /owncloud "/var/www/owncloud/" <Directory /var/www/owncloud/> Options +FollowSymlinks AllowOverride All <IfModule mod_dav.c> Dav off </IfModule> SetEnv HOME /var/www/owncloud SetEnv HTTP_HOME /var/www/owncloud </Directory> </VirtualHost>Enable and verify the owncloud vhost
sudo a2ensite owncloud.conf sudo apachectl configtest
Now install OwnCloud
Change the database name, user, and password to whatever you named the OwnCloud database earlier;
Change the ‘admin user’ and ‘admin pass’ to whatever you want the new OwnCloud admin account to be.
sudo -u www-data /var/www/owncloud/occ maintenance:install \ --database "mysql" \ --database-name "owncloud" \ --database-user "owncloud"\ --database-pass "password" \ --admin-user "admin" \ --admin-pass "your new owncloud admin password"Edit the OwnCloud config file to add the domain you used earlier in the Apache2 vhost file:
sudo nano /var/www/owncloud/config/config.php 'trusted_domains' => array ( 0 => 'localhost', 1 => 'whatever your domain is goes here', ),Personally I restart the server at this point, which will restart all services. Then visit the domain / IP of your settings and you should see the OwnCloud login page. Use the credentials you setup for the admin user.
System cron setting:
sudo crontab -u www-data -e */15 * * * * /usr/bin/php -f /var/www/owncloud/occ system:cronMemcache with Redis we installed earlier:
sudo nano /var/www/owncloud/config/config.php 'filelocking.enabled' => true, 'memcache.local' => '\OC\Memcache\APCu', 'memcache.locking' => '\OC\Memcache\Redis', 'redis' => [ 'host' => 'localhost', 'port' => 6379, ],Go restart the server again and enjoy!
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Comment out in=>
/usr/lib/python3/dist-packages/middlewared/plugins/vm/vms.py # elif flags['intel_vmx']: # if vcpus > 1 and flags['unrestricted_guest'] is False: # verrors.add(f'{schema_name}.vcpus', 'Only one Virtual CPU is allowed in this system.') # elif flags['amd_rvi']: # if vcpus > 1 and flags['amd_asids'] is False: # verrors.add( # f'{schema_name}.vcpus', 'Only one virtual CPU is allowed in this system.' # )At this point we must comment out each time we update the system.