Category Archives: Linux Maintenance

By April 06, 2019

Enable EPEL: yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm Install yum-utils if it is not already installed. yum install yum-utils Enable the Remo repository for PHP 7.2: yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm yum-config-manager –enable remi-php72 Once you are done with these steps, you can go ahead and install PHP 7.2 2. Install PHP 7.2 on CentOS 7 To install PHP 7.2


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By March 26, 2019

As of 2018 , Docker-Ce will cause a core dump on older Pi zero’s and Raspberry pi’s. Reference https://github.com/moby/moby/issues/38175 The fix for this is downgrade Docker CE to 18.06 sudo apt-get install docker-ce=18.06.1~ce~3-0~raspbian


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By March 07, 2019

Network Time Service. setting up a time server is pretty straight forward once you have some understanding. Being a linux user , it pretty hard to find a reliable public time server. Most of them are slow and hard to reach.  I decided to setup a private time server for my internal and external servers.  


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By November 11, 2018

Centos 7X Enable FTP TLS Reference https://linuxconfig.org/setup-secure-proftpd-server-on-centos-7-with-tls Set the port range in /etc/proftpd.conf echo “PassivePorts 49152 65534″ >> /etc/proftpd.conf Open the Firewall ports firewall-cmd –add-port=49152-65534/tcp –permanent firewall-cmd –reload Validation firewall-cmd –list-ports Update the options in /etc/sysconfig/proftpd From PROFTPD_OPTIONS=”” To PROFTPD_OPTIONS=”-DTLS” Verify TLS has been setup in /etc/proftpd.conf TLSEngine on TLSRequired on TLSRSACertificateFile /etc/pki/tls/certs/proftpd.pem TLSRSACertificateKeyFile /etc/pki/tls/certs/proftpd.pem


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By November 11, 2018

Error: Mailbox access error: Panic: file mail-index-sync-keywords.c: assertion failed Cause Corrupted Dovecot index file. Resolution Connect to the server using SSH. Move the file /var/qmail/mailnames/example.com/john.doe/Maildir/dovecot.index: # cd /var/qmail/mailnames/example.com/john.doe/Maildir/ # mv dovecot.index{,.back}


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