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Owl River Company

 
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These Owl River Company tips are in no particular order. If you find them useful, please link to this form of the page URL, http://www.owlriver.com/tips/ rather than directly to a sub-page, for we modify content over time, as we see new forms of the questions to be addressed in the various support mailing lists in which we participate.

News: We have added an announcement mailing list (very low volume) in response to reader requests for  Updated content  update notifications; it will also announce security issues which we determine are within the scope of our tips (but not general vendor advisories), and announcement of  New content  new content here monthly.
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Topic Description Keyword
mirror-setup.txt    mirror a anonymous FTP site    mirror
rsync-cookbook    rsync mass drive duplication of a live or pattern installation    rsync
partitioning-strategy    A 'thought' piece -- How should you carve up the shiny new hard drive? Accompanies rsync-cookbook    Opinion
sendmail-tip    Just like a guru: build sendmail.cf properly from sendmail.mc    m4
smtp-auth    Kick it a notch, and use that sendmail.mc knowledge to let your users rove and still use just one outbound mailserver with SMTP-AUTH    SMTP-AUTH
tcpdump-tech    tcpdump techniques    tcpdump, xxd
trace-sendmail        Track down that missing email ... using tcpdump to verify SMTP protocol conformance    RFC 2821
tcpflow-tutorial    Track down email retrieval problems ... using tcpflow to verify POP protocol conformance    RFC 1939,
tcpflow
smtp-rfc    Track down why that outbound email is still hanging around ... using dig and telnet to verify SMTP protocol conformance    RFC 2821
Data exchange    Receiving content from people using proprietary file format tools - part one    Proprietary to PostScript
Data exchange       Receiving content from people using proprietary file format tools - part two    PostScript to PDF
gdm-setup    Setting up the XDM chooser for the local network    XDMCP and GDM
maintenance    Setting up a Unix host for maintenance    sudo and single user mode
tftp-xinetd    tftp-server and xinetd, Red Hat Linux 8.0, and K12LTSP and LTSP    tftp-server and xinetd
zenworks    Novell ZENworks for Desktops drive visibility restriction    TID 10057048 and MSKB Q220955
internationalization    Internationalization and you -- Here is what you need to know about to ease the I18N transition.    i18n
rpm --nodeps    Just say 'No' to '--nodeps' -- It is almost never proper to use the RPM --nodeps option. Here's the whys and wherefores.    rpm --nodeps
PXE installs    'The network is the computer' is not just the Sun catch-phrase. It is the easy way to amplify speed and accuracy in building and managing computers. This cookbook will get you started.    PXE, TFTP, DHCP
Hands-off kickstart methods    But of course, time passes, and computers are at remote sites. Save the travel and upgrade it remotely with Kickstart    Kickstart, Grub
'Yum' for upgrades      With the maturity of the yum tool, the 'EOL' (End of Life) of Red Hat Linux 9, and in light of the stated short release cycle and unsuitability of the Fedora Project for production servers, we document an upgrade path, using yum to move from Red Hat Linux 9 9 to CentOS 3.1 (the premier community supported RHEL rebuild project)    Yum, CentOS
Setting up NTP      A person with more than one clock is said to be unsure what the correct time is. With NTP - the Network Time Protocol - that is needs to be longer true. We work through setting up /etc/ntp.conf    NTP
Control resolver setting under DHCP      Particularly in a broadband residential environment, it seems, the DNS servers offered are over-loaded. Circumvent this bottleneck by specifying your chosen resolvers.    DHCP client, DNS
Using a local 'upgradeany' to move from RHL 9, RHEL 3, RHAS 21, or cAos 1 to CentOS 4      We have used the 'upgradeany' kickstart option in CentOS 4, to migrate from RHL 9, RHEL 3, RHAS 21, or cAos 1 to CentOS 4. Here is how.    Anaconda, Kickstart
Using a custom kickstart config to yield a tiny CentOS 4 installation      We use a custom ks.cfg setup and some %post scripting to yield a CentOS 4 installation in under 350Meg    Anaconda, Kickstart
Building Source RPM as non-root under CentOS      We strongly believe in building for a system with the lowest possible level of privileges, and are often asked for a guide on doing so. In addition to our content at the old RPM site, we offer this.    RPM, non-root build, minimal build environment, rpmbuild
Adding a patch to SRPM packaged content      Updated content  Once one knows how to build as SRPMs non-root, the next step is to start patching against pristine sources to fix issues, testing the patch's effects, and placing the patches under the rpmbuild and .spec file discipline.    RPM, rpmbuild, patch, diff, sed
Transitioning to CentOS - a Minimal Installer methodology using Grub      An upgrade to CentOS can start with a 5 Meg download, and grub only    Grub, Anaconda, Kickstart
Broken System quick diagnosis process      We use a little bit of scripting and a couple of lesser known approaches on tools to guide a person who does not know how their RPM based system is broken    rpm, yum
Adding required modules for a Linux kernel initrd (Initial Ram Disk)      New content  We talk though adding (usually closed) modules to a Linux kernel    Linux, kernel, mkinitrd, grub, CentOS, upgrade
Fresh reinstallation of a MySQL server      New content  Staring afresh is easy to do with MySQL, once one knows the tricks.    MySQL server, rpm, yum, CentOS
... no more IPv6      New content  Sometimes we just want a 'feature' to go away    CentOS, IPv6
    
    
Next    sendmail TLS    TLS
Future    XDM sessions, PXE booting, TFTP servers, DHCP servers, DNS servers, FTP servers, HTTP servers, HTTPS servers, LDAP servers, RADIUS servers ...      

Elsewhere    Much of the ethic of the Open Source community is based on freely contributing to a community of like minded folks.

pre December 2006 RPM website
(Off Site)
   We maintained the former 'RPM -( RPM Package Manager )- packaging tool reference site for many years.    RPM
COLUG website
(Off Site)
   We maintain the Central Ohio Linux User Group site, and present there often.    COLUG
Training
(Off Site)
   ISSA 2005 November Super Training on 'Hardening Linux' presentation materials.    Central OH ISSA

Other Voices    If you do not know that you are a guru or wizard in matters of Open Source culture, or have not yet read, or indeed have not recently re-read these essays, you need to take the time to read the following well-spring standards and essays.

IETF STD 1
(Off Site)
also: here
   Standards are the well-spring permitting heterogeneous computer systems to inter-operate. The most recent versions of the RFC protocol summaries are compiled in Standard 1    local copy
(ESR prime is gone moved) Smart Questions
(Off Site)
   How To Ask Questions The Smart Way -- Eric Raymond, Rick Moen, Evelyn Mitchell and some other smart cookies jumpstart the learning and problem-solbing skills process    local copy
Reporting Bugs
(Off Site)
   How To Ask Report Bugs -- Simon Tatham    local copy

Archive    Knowledge has been disappearing due to entropy since at least the time the library burned in Alexandria (whichever legend: Augustus Caesar, 48 B.C.; Christian monks 391; Muslim zealots 642). We preserve some here.
prime    The issue of how one can safely and securely interoperate in a world of less security-conscious computer users is a challenge. We address the issue functionally here; Frank da Cruz, at the Columbia University kermit project offers: Safe Network Computing: Windows Desktop.    local copy
(prime is gone)    The release of a GCC fork as version gcc-2.96 by Red Hat drew a lot of heat, and not much light from some bystanders. Bero (Bernhard Rosenkraenzer) prepared a careful reply. Bero's site went dark when he left Red Hat in September 2002; Google's cache offered a copy.    local copy


     We sell support and development consulting services in a wide variety of server applications -- Big Iron Unix (Aix, HP-UX, Solaris), the Open Source *BSD and Linux variants, and the workgroup commercial variants (Novell, SCO, NT, XP, OS/2). If your organization needs such services, consider contacting us for a quote.

Disclaimer: Absent a prior formal support contract, presently in force, all of our content linked here on this page is provided without any warranty, express or implied -- If you assert that it broke your server, you get to keep the pieces. The content listed below is in process being authored: -- comment welcomed to info@owlriver.com, but does not represent a final, finished, or maintained document.
[ grub-cutover ] [ maillog-reading ] [ LTSP capacity-sampling ] [ Bootable CD, PXE and etherboot Linux installations ]
       

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Last modified: Fri, 06 Feb 2015 09:38:46 -0500
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