We are going to install ClockworkMod Recovery on the Galaxy Tab 2 10.1 (GT-P5100) with heimdall. After that you can root your stock image or install CyanogenMod on your tab. If you have another version of Galaxy Tab 2 you will need other images for it, for links take a look at the links at the bottom.

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We are going to create a simple cron job to dump the DBs, so you can save this dumps on the regular way with your backup software.

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If you running some php web applications with heavy load you should use some accelerators like APC or eAccelerator for PHP. I noticed that official build instructions in readme’s and official homepages are not completely usable to get it working.

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You may need custom recovery if you want to do nandroid backups of flash some zip files. I will use Linux to flash it.

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If you are going to create the VMFS partition on the some mew local hdd or hardware raid volume, you can get in trouble with a message “Failed to update the disk partition information”. The reason for it is a broken/missing dos label on the device.

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If you get degraded DRBD with log messages like “Split-Brain detected but unresolved, dropping connection!”, you have to manually resolve split brain situation.

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Install everything

  • Install freetds for your distribution, you can find RH packages at atrpms.net.
  • Depending on your distribution you will need to install libtdsodbc
  • Install php odbc extension

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We are going to implement authentication with One-Time-Passwords generated via the HOTP/OATP algoritm(see RFC) with Apache. We will use mod_authn_otp for it.

This example is for Gentoo.

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This article is about implementing One-Time-Password authentication with PAM, so you can use it with ssh and other pam enabled services.

We will use oath-toolkit for it. So install it, gentoo ebuild for it is provided in my overlay.

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If you are going to use CPU frequency scaling on P4 you will probably use p4-clockmod and get in trouble with ondemand governor like me. If you try to switch to the ondemand governor you can see following message in dmesg:

ondemand governor failed, too long transition latency of HW, fallback to performance governor

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