Entries Categorized as 'Technology'
Author:
erics, May 21st, 2019
The Question Recently, a customer asked us: Why would Tungsten Replicator be slow to apply to MySQL? The Answer Performance Tuning 101 When you run trepctl status and see: appliedLatency : 7332.394 like this on a slave, it is almost always due to the inability for the target database to keep up with the applier. […]
Categories: Architecture, Mastering Tungsten Replicator, Multimaster, Multisite, Technology Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, May 10th, 2019
I was getting rsync errors from one source host: 1 2 Corrupted MAC on input. Disconnecting: Packet corrupt Corrupted MAC on input. Disconnecting: Packet corrupt Finally tracked it down to the application “Little Snitch”. Needed to fully uninstall it and reboot to get the problem solved.
Categories: How-To's, Technology Tags: corrupt, Corrupted MAC on input, howto, Little Snitch, MacOS, macosx, Packet corrupt, rsync, Snitch, Snow Leopard, tips
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Author:
erics, May 7th, 2019
The Question Recently, a customer asked us: If we move to using the INI configuration method instead of staging, would password-less SSH still be required? The Answer The answer is both “Yes” and “No” No, for installation and updates/upgrades specifically. Since INI-based configurations force the tpm command to act upon the local host only for […]
Categories: Architecture, Mastering Tungsten Clustering, Multimaster, Multisite, Technology Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, April 23rd, 2019
Overview The Skinny In this blog post we will discuss how to best integrate various Continuent-bundled cluster monitoring solutions with PagerDuty (pagerduty.com), a popular alerting service. Agenda What’s Here? Briefly explore the bundled cluster monitoring tools Describe the procedure for establishing alerting via PagerDuty Examine some of the multiple monitoring tools included with the Continuent […]
Categories: Architecture, Mastering Tungsten Clustering, Multimaster, Multisite, Technology Tags: HA, High Availability, monitoring, mysql, nagios, NRPE
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Author:
erics, April 16th, 2019
Problem: Trying to run a yum -y update as root aborts with the following error: 1 2 3 4 5 The GPG keys listed for the "Percona-Release YUM repository – x86_64" repository are already installed but they are not correct for this package. Check that the correct key URLs are configured for this repository. […]
Categories: How-To's, Technology Tags: GPG, howto, key, Keys, Percona, percona-release, release, tips, update, Yum, yum update
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Author:
erics, March 18th, 2019
git log {path_and_file} git checkout {commit_hash} — {path_and_file} git checkout 8c7eae3f518bb7fd98eb6e8344270f02065d83ee — myFile.txt
Categories: How-To's, Technology Tags: Checkout, commit, git, recover, Restore, Revert, specific
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Author:
erics, February 16th, 2019
As of Mac OS X Lion 10.7, Terminal provides Services for opening a new terminal window or tab at the selected folder in Finder. They also work with absolute pathnames selected in text (in any application). You can enable these services with System Preferences > Keyboard > Keyboard Shortcuts > Services. Look for “New Terminal […]
Categories: How-To's, Technology Tags: apple, Finder, howto, Keyboard, MacOS, macosx, Menu, Mojave, Open, Services, Terminal, tips, window
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Author:
erics, February 4th, 2019
Use the ssh-keygen command on a computer to which you’ve downloaded your private key .pem file; for example: First, ensure permissions will allow ssh-keygen to work: chmod 600 /path/to/the/file/your-key-pair.pem Then generate an RSA public key: ssh-keygen -y -f /path/to/the/file/your-key-pair.pem > your-key-pair.pub
Categories: How-To's, Technology Tags: .pem, .pub, Amazon, apple, AWS, cli, howto, key, key-pair, KeyPair, Linux, Mac, MacOS, macosx, Pubkey, public, Public Key, ssh-keygen, tips
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Author:
erics, January 11th, 2019
In the normal vim mode, typing gg=G will reindent the entire file. == will re-indent just the current line. http://vim.wikia.com/wiki/Fix_indentation
Categories: How-To's, Technology Tags: Auto-indent, Format, howto, Indent, perl, re-indent, Reformat, tips, vi, vim
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Author:
erics, January 9th, 2019
Execute the following command: $ sudo xcode-select -switch /Applications/Xcode.app
Categories: Technology Tags:
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