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AH00526: Syntax error on line 55 of /etc/apache2/apache2.conf: Invalid command ‘LockFile’, perhaps misspelled or defined by a module not included in the server configuration Action ‘start’ failed. Solutions: Replacing this line LockFile ${APACHE_LOCK_DIR}/accept.lock with this one Mutex file:${APACHE_LOCK_DIR} default in /etc/apache2/apache2.conf solved the problem.Read More →

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AH00526: Syntax error on line 5 of /etc/apache2/sites-enabled/awstats.conf: Either all Options must start with + or -, or no Option may. Action ‘start’ failed. The Apache error log may have more information. Solution: Add “+” in front of the options, for example: Options ExecCGI -MultiViews +SymLinksIfOwnerMatch   ==> Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch  Read More →

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apex, bare domain ( domain without www) and www.domain.com should point to the same IP. In amazon load balance or some of the cloud solution, they do not provide us a static IP, they provide us a name and asks us to point our domain to their domain. There is no problem with www.domain.com , but we can’t point apex domain (domain.com) to a cname record, it ‘s because the current DNS RFC does not allow this. There are many dns hosting providers customized their DNS to support this feature. If you are using Route53, you can use the script below to monitor the differenceRead More →

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I recently had to clone a very large repository through SSH, every time i did i got this error   Cloning into ‘large-repository’… remote: Counting objects: 20248, done. remote: Compressing objects: 100% (10204/10204), done. error: RPC failed; curl 18 transfer closed with outstanding read data remaining fatal: The remote end hung up unexpectedly fatal: early EOF fatal: index-pack failed I could be the connection is bad , i finally fixed by using the commands below: $ git clone [email protected]:large-repository –depth 1 $ cd large-repository $ git fetch –unshallowRead More →

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By default Apache only allows upto 150 connections, if the number is over, you will be in the queue. It will look like the server is down. The limit for server is usually configured in the following files: /etc/apache2/apache2.conf /etc/apache2/mods-available/mpm_worker.conf /etc/apache2/mods-available/mpm_prefork.conf This is the content to update:   ServerLimit 600 StartServers 10 MinSpareThreads 75 MaxSpareThreads 250 ThreadLimit 64 ThreadsPerChild 32 MaxRequestWorkers 600 MaxConnectionsPerChild 800  Read More →

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This is a bit gnarly. If you have a better method of updating the password without triggering a warning about PASSWORD being deprecated, I’m all ears. # Stop MySQL sudo service mysql stop # Make MySQL service directory. sudo mkdir /var/run/mysqld # Give MySQL user permission to write to the service directory. sudo chown mysql: /var/run/mysqld # Start MySQL manually, without permission checks or networking. sudo mysqld_safe –skip-grant-tables –skip-networking & # Log in without a password. mysql -uroot mysql Update the password for the root user. UPDATE mysql.user SET authentication_string=PASSWORD(‘YOURNEWPASSWORD’), plugin=’mysql_native_password’ WHERE User=’root’ AND Host=’%’; EXIT; # Turn off MySQL. sudo mysqladmin -S /var/run/mysqld/mysqld.sock shutdownRead More →

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On Redhat, run this command lsblk You will see this NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sr0 11:0 1 1024M 0 rom sda 8:0 0 100G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 99G 0 part ├─rootvg-swaplv (dm-0) 253:0 0 8G 0 lvm [SWAP] ├─rootvg-rootlv (dm-1) 253:1 0 14G 0 lvm / ├─rootvg-homelv (dm-2) 253:2 0 6G 0 lvm /home ├─rootvg-varlv (dm-3) 253:3 0 8G 0 lvm /var └─rootvg-tmplv (dm-4) 253:4 0 8G 0 lvm /tmp sdb 8:16 0 250G 0 diskRead More →