syslog-ng.conf.5 (2012 03)

syslog-ng.conf(5) syslog-ng.conf(5)
OPTIONS
You can specify several global options to syslog-ng in the options statement:
options { opt1; opt2; ... };
Where an option can be any of the following:
chain_hostnames(yes|no)
Enable or disable the chained hostname format.
long_hostnames(yes|no)
This is a deprecated alias for chain_hostnames().
keep_hostname(yes|no)
Specifies whether to trust hostname as it is included in the log message. If keep_hostname is yes
and there is a hostname in the message, it is not touched; otherwise it is always rewritten based on
the information where the message was received from.
use_dns(yes|no)
Enable or disable DNS usage. syslog-ng blocks on DNS queries, so enabling DNS may lead to a
Denial of Service attack. To prevent DoS, protect your syslog-ng network endpoint with firewall
rules, and make sure that all hosts, which may get to syslog-ng is resolvable.
use_fqdn(yes|no)
Add Fully Qualified Domain Name instead of short hostname.
check_hostname(yes|no)
Enable or disable whether the hostname contains valid characters.
bad_hostname(regex)
A regexp which matches hostnames which should not be taken as such.
dns_cache(yes|no)
Enable or disable DNS cache usage.
dns_cache_expire(n)
Number of seconds while a successful lookup is cached.
dns_cache_expire_failed(n)
Number of seconds while a failed lookup is cached.
dns_cache_size(n)
Number of hostnames in the DNS cache.
create_dirs(yes|no)
Enable or disable directory creation for destination files.
dir_owner(uid)
User id.
dir_group(gid)
Group id.
dir_perm(perm)
Permission value (octal mask).
owner(uid)
User id for created files.
group(gid)
Group id for created files.
perm(perm)
Permission value for created files.
gc_busy_threshold(n)
Sets the threshold value for the garbage collector, when syslog-ng is busy. GC phase starts when
the number of allocated objects reach this number. Default: 3000.
gc_idle_threshold(n)
Sets the threshold value for the garbage collector, when syslog-ng is idle. GC phase starts when
the number of allocated objects reach this number. Default: 100.
2 Hewlett-Packard Company − 2 − HP-UX 11i Version 3: March 2012