PGCon 2010 – schedule
The PGCon 2010 schedule has been announced. Have a read of our outstanding lineup, see where people come from to PGCon, and get your registration started.
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Open Source
HAST – High Availability Storage
HAST has just been added to FreeBSD: HAST allows to transparently store data on two physically separated machines connected over the TCP/IP network. Those two machines together will be called a cluster and each machine is one cluster node. HAST works in Primary-Secondary (Master-Backup, Master-Slave) configuration, which means that only one of the cluster nodes can be active at any given time. Active node will be called Primary node. This is the node
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Got ISO? Create USB boot image
The liveusb-creator is a cross-platform tool for easily installing live operating systems on to USB flash drives. It runs on various operating systems and allows you to create a bootable device from an ISO image. This could be useful for advocacy purposes.
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ZFS tuning
Interesting posts here on ZFS tuning, espcially posts #34 and #35. Post #37 has an interesting perl solution.
Tower Case with a cheaper faster CPU
I recently wrote about a tower case solution which sliced $500 off the cost. Last night we found an ASUS m/b for a Phenom II which supports ECC. This will be a cheaper faster solution. I will, however, have to buy a NIC. This NIC runs a Realtek chipset. No thanks. LIAN LI PC-A71F Black Aluminum ATX Full Tower Computer Case $240 (from mwave) Silencer 610 EPS12V from PC Power and Cooling for
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openvpn replay
I’ve started seeing these messages recently: openvpn[2688]: latens.example.org/10.99.36.17:60467 Authenticate/Decrypt packet error: bad packet ID (may be a replay): [ #999 ] — see the man page entry for –no-replay and –replay-window for more info or silence this warning with –mute-replay-warnings After reading the man page, I decided to add the following and restart openvpn: replay-window 64 20 We’ll see….
Bacula Configuration
Bacula uses flat text files for configuration. From time to time, people, usually new to the project, ask: why isn’t the configuration in the database? Bacula uses the database to store information about what files were backed up, from what client, and when. This information is useful when you need to know how if you have a copy of a file from last Tuesday before you wrote crap into it but after you
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Bacula Retention Periods
Bacula is a backup system with three different retention periods: Volume Job File I set all three to the same value. It is important to note that these values affect only the Catalog. It determines how long a given record is held in the database. For example, if you set File Retention to be 45 days, it means that there are no records in the database for any files backed up in any
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Graphing
I have about 14,000 data points collected from backups. I started in Oct 2007, but have not done anything with the data. I’d like your help. I have put the data into a PostgreSQL database and dumped it. The dump is here: http://langille.org/tmp/dlt_stats.sql.gz The table looks like: $ psql dan psql (8.4.2) Type “help” for help. dan=# \d dlt_stats Table “public.dlt_stats” Column | Type | Modifiers ————-+—————————–+——————————————————– id | integer | not null
Big storage
I’m thinking about creating a storage box. One with a lot of disk space. It will be used for backups and stuff. I will continue to backup to tape as well. I’m considering this case, which has 8xSATA hot-swap bays: http://www.newegg.com/Product/Product.aspx?Item=N82E16811192058 If I was buying a RAID card, I’d buy this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16816131002&Tpk=areca%201120 But I may go with ZFS instead of hardware RAID.