Created
February 26, 2009 05:35
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# | |
# drbd.conf example | |
# | |
# parameters you _need_ to change are the hostname, device, disk, | |
# meta-disk, address and port in the "on <hostname> {}" sections. | |
# | |
# you ought to know about the protocol, and the various timeouts. | |
# | |
# you probably want to set the rate in the syncer sections | |
# | |
# NOTE common pitfall: | |
# rate is given in units of _byte_ not bit | |
# | |
# | |
# increase timeout and maybe ping-int in net{}, if you see | |
# problems with "connection lost/connection established" | |
# (or change your setup to reduce network latency; make sure full | |
# duplex behaves as such; check average roundtrip times while | |
# network is saturated; and so on ...) | |
# | |
skip { | |
As you can see, you can also comment chunks of text | |
with a 'skip[optional nonsense]{ skipped text }' section. | |
This comes in handy, if you just want to comment out | |
some 'resource <some name> {...}' section: | |
just precede it with 'skip'. | |
The basic format of option assignment is | |
<option name><linear whitespace><value>; | |
It should be obvious from the examples below, | |
but if you really care to know the details: | |
<option name> := | |
valid options in the respective scope | |
<value> := <num>|<string>|<choice>|... | |
depending on the set of allowed values | |
for the respective option. | |
<num> := [0-9]+, sometimes with an optional suffix of K,M,G | |
<string> := (<name>|\"([^\"\\\n]*|\\.)*\")+ | |
<name> := [/_.A-Za-z0-9-]+ | |
} | |
# | |
# At most ONE global section is allowed. | |
# It must precede any resource section. | |
# | |
global { | |
# By default we load the module with a minor-count of 32. In case you | |
# have more devices in your config, the module gets loaded with | |
# a minor-count that ensures that you have 10 minors spare. | |
# In case 10 spare minors are too little for you, you can set the | |
# minor-count exeplicit here. ( Note, in contrast to DRBD-0.7 an | |
# unused, spare minor has only a very little overhead of allocated | |
# memory (a single pointer to be exact). ) | |
# | |
# minor-count 64; | |
# The user dialog counts and displays the seconds it waited so | |
# far. You might want to disable this if you have the console | |
# of your server connected to a serial terminal server with | |
# limited logging capacity. | |
# The Dialog will print the count each 'dialog-refresh' seconds, | |
# set it to 0 to disable redrawing completely. [ default = 1 ] | |
# | |
# dialog-refresh 5; # 5 seconds | |
# You might disable one of drbdadm's sanity check. | |
# disable-ip-verification; | |
# Participate in DRBD's online usage counter at http://usage.drbd.org | |
# possilbe options: ask, yes, no. Default is ask. In case you do not | |
# know, set it to ask, and follow the on screen instructions later. | |
# usage-count yes; | |
usage-count no; | |
} | |
# | |
# The common section can have all the sections a resource can have but | |
# not the host section (started with the "on" keyword). | |
# The common section must precede all resources. | |
# All resources inherit the settings from the common section. | |
# Whereas settings in the resources have precedence over the common | |
# setting. | |
# | |
common { | |
protocol C; | |
syncer { | |
rate 10M; | |
al-extents 257; | |
} | |
startup { | |
wfc-timeout 0; | |
degr-wfc-timeout 15; | |
} | |
disk { | |
on-io-error detach; | |
} | |
net { | |
sndbuf-size 512k; | |
timeout 60; | |
connect-int 10; | |
ping-int 10; | |
ping-timeout 5; | |
max-buffers 8192; | |
max-epoch-size 8192; | |
cram-hmac-alg "sha1"; | |
shared-secret "appname-drbd"; | |
allow-two-primaries; | |
} | |
} | |
# | |
# this need not be r#, you may use phony resource names, | |
# like "resource web" or "resource mail", too | |
# | |
resource r0 { | |
on centos-primary { | |
disk /dev/hda3; | |
address 192.168.100.101:7788; | |
device /dev/drbd0; | |
meta-disk internal; | |
} | |
on centos-secondary { | |
disk /dev/hda3; | |
address 192.168.100.102:7788; | |
device /dev/drbd0; | |
meta-disk internal; | |
} | |
} |
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