SYSTEMD

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SYSTEMD-RESOLVE

NAME
SYNOPSIS
æè¿°
éé¡¹
ä¾å
åè§
NOTES
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NAME

systemd-resolve - è§£æä¸»æºåãIPå°åãååãDNSèµæºè®°å½ãæå¡

SYNOPSIS

	systemd-resolve [OPTIONS...] HOSTNAME...
	systemd-resolve [OPTIONS...] ADDRESS...
	systemd-resolve [OPTIONS...] --type=TYPE DOMAIN...
	systemd-resolve [OPTIONS...] --service [[NAME] TYPE] DOMAIN
	systemd-resolve [OPTIONS...] --openpgp USER@DOMAIN
	systemd-resolve [OPTIONS...] --tlsa DOMAIN[:PORT]
	systemd-resolve [OPTIONS...] --statistics
	systemd-resolve [OPTIONS...] --reset-statistics

æè¿°

systemd-resolve å©ç¨ systemd-resolved.service(8) ç³»ç»æå¡è§£æä¸»æºåãIPå°åãååãDNSèµæºè®°å½ãæå¡ã é»è®¤æåµä¸ï¼åæ°åè¡¨å°è¢«è§ä¸ºåå/ä¸»æºåçåè¡¨ï¼ç¨åºçè¾åºå°æ¯å®ä»¬æå¯¹åºç IPv4 æ IPv6 å°åã å¦æåæ°ç¬¦å IPv4 æ IPv6 æ ¼å¼ï¼é£ä¹è¡¨ç¤ºåè§£æIPå°åæå¯¹åºçä¸»æºåã

--type= ç¨äºæå®ä»æ¥è¯¢ç¹å®ç±»åçDNSèµæºè®°å½(A, AAAA, SOA, MX, ...)ï¼ èä¸æ¯é»è®¤çå°åè§£æ/åè§£æã ç¹æ®å¼ "help" å¯ç¨äºååºææå¯ç¨çè®°å½ç±»åã

--openpgp ç¨äºæ¥è¯¢åå¨å¨DNSç OPENPGPKEY [3] ç±»åçèµæºè®°å½ä¸ç PGP å¬é¥ã éè¦æå®è³å°ä¸ä¸ªEmailå°åã

--tlsa ç¨äºæ¥è¯¢åå¨å¨DNSç TLSA [4] ç±»åçèµæºè®°å½ä¸ç TLS å¬é¥ã éè¦æå®è³å°ä¸ä¸ªååã

--statistics ç¨äºæ¾ç¤ºè§£æç»è®¡ï¼ åæ¬ DNSSEC éªè¯æåä¸å¤±è´¥çæ°éã

--reset-statistics ç¨äºéç½®åç§è§£æç»è®¡çè®¡æ°å¨ï¼ åæ¬ææ --statistics è¾åºçç»è®¡æ°æ®ãæ¤æä½éè¦è¶çº§ç¨æ·æéã

éé¡¹

-4, -6

-i INTERFACE, --interface=INTERFACE

-p PROTOCOL, --protocol=PROTOCOL

æå®æ¥è¯¢æç¨çåè®®ãå¯ä»¥è®¾ä¸ºä¸ååä¸ªå¼ä¹ä¸ï¼ "dns"(ç»å¸çåæDNS)ã "llmnr"(Link-Local Multicast Name Resolution [5] )ã "llmnr-ipv4" ã "llmnr-ipv6" ã é»è®¤ä½¿ç¨ææéåçåè®®ã å¯ä»¥å¤æ¬¡ä½¿ç¨æ- ¤éé¡¹ä»¥æå®å¤ä¸ªæ¥è¯¢åè®®ã æ³¨æï¼(1)è®¾ç½® "llmnr" çä»·äºåæ¶è®¾ç½® "llmnr-ipv4" ä¸ "llmnr-ipv6" ã(2)æ¤éé¡¹å¹¶ä¸å¼ºå¶ systemd-resolved.service(8) å¿é¡»ä½¿ç¨æå®çæ¥è¯¢åè®®ï¼å ä¸ºæä¸ªå¿éçç½ç»æ¥å£ä¸ç¸åºçéç½®å¯è½ä¸åå¨ã (3)ç¹æ®å¼ "help" å¯ç¨äºååºææå¯ç¨çåè®®ã

-t TYPE, --type=TYPE, -c CLASS, --class=CLASS

æå®æ¥æ¾çDNSèµæºè®°å½ç type(A, AAAA, MX, ...) ä¸ class(IN, ANY, ...)ã å¦æä½¿ç¨äºæ¤éé¡¹ï¼é£ä¹ä»æ¥è¯¢ä¸æå®ç type/class å¹éçDNSèµæºè®°å½ã å¦æä»æå®äº type çè¯ï¼é£ä¹ class çé»è®¤å¼æ¯"IN"ã ç¹æ®å¼ "help" å¯ç¨äºååºææå¯ç¨çå¼ã

--service

æ ¹æ®æå®çåæ°åè¡¨ï¼å¼å¯ DNS-SD ä¸ ç®å SRV æå¡è§£æã è¯¦è§åæã

--service-address=BOOL

--service-txt=BOOL

é»è®¤å¼ yes è¡¨ç¤ºå¨ä½¿ç¨ --service æ¥æ¾ DNS-SD æå¡æ¶ï¼åæ¶ä¹è§£æ TXT æå¡åæ°æ®è®°å½ã

--openpgp

æ¥è¯¢åå¨å¨DNSç OPENPGPKEY ç±»åçèµæºè®°å½ä¸ç PGP å¬é¥(åè§åæ)ã æå®çEmailå°åå°è¢«è½¬æ¢ä¸ºå¯¹åºçDNSååï¼å¹¶æå°åºææ OPENPGPKEY å¬é¥ã

--tlsa

ä¸ºæ¯ä¸ä¸ªå¸¦æ port ä¸ family åç¼çåå ("_port._family.domain") æ¥è¯¢åå¨å¨DNSç TLSA ç±»åçèµæºè®°å½ä¸ç TLS å¬é¥(åè§åæ)ã ç«¯å£å·å¯ä»¥æç¡®çåå¨åå·(:)ä¹åï¼ å¦åå°ä½¿ç¨é»è®¤ç 443 ç«¯å£ã family å¯ä»¥ä½ä¸º --tlsa çåæ°æå®ï¼å¦åå°ä½¿ç¨é»è®¤å¼ tcp ã

--cname=BOOL

é»è®¤å¼ yes è¡¨ç¤ºè¿½è¸ª DNS ç CNAME æ DNAME éå®åã å¦åï¼å¨æ¥æ¶å° CNAME æ DNAME åºçåï¼ç´æ¥è¿åéè¯¯ã

--search=BOOL

--raw[=payload|packet]

--legend=BOOL

é»è®¤å¼ yes è¡¨ç¤ºæ¾ç¤ºåºçåå®¹çæ é¢å¤´ä¸åæ°æ®ã

--statistics

--reset-statistics

--flush-caches

å·æ°æ¬å°DNSèµæºè®°å½ç¼åã

--status

æ¾ç¤ºå¨å±DNSè®¾ç½®ãä»¥åéå¯¹æ¯ä¸ªè¿æ¥çDNSè®¾ç½®ã

-h, --help

æ¾ç¤ºç®ççå¸®å©ä¿¡æ¯å¹¶éåºã

--version

æ¾ç¤ºç®çççæ¬ä¿¡æ¯å¹¶éåºã

--no-pager

ä¸å°ç¨åºçè¾åºåå®¹ç®¡é(pipe)ç»åé¡µç¨åºã

ä¾å

Example 1. è§£æ "www.0pointer.net" ååæå¯¹åºçå°å

$ systemd-resolve www.0pointer.net
www.0pointer.net: 2a01:238:43ed:c300:10c3:bcf3:3266:da74
85.214.157.71

-- Information acquired via protocol DNS in 611.6ms.
-- Data is authenticated: no

Example 2. åè§£æ "85.214.157.71" å°åæå¯¹åºçåå

$ systemd-resolve 85.214.157.71
85.214.157.71: gardel.0pointer.net

-- Information acquired via protocol DNS in 1.2997s.
-- Data is authenticated: no

Example 3. æ¥æ¾ "0pointer.net" ååç MX è®°å½

$ systemd-resolve -t MX yahoo.com --legend=no
yahoo.com. IN MX 1 mta7.am0.yahoodns.net
yahoo.com. IN MX 1 mta6.am0.yahoodns.net
yahoo.com. IN MX 1 mta5.am0.yahoodns.net

Example 4. æ¥æ¾ä¸ä¸ª SRV æå¡

$ systemd-resolve --service _xmpp-server._tcp gmail.com
_xmpp-server._tcp/gmail.com: alt1.xmpp-server.l.google.com:5269 [priority=20, weight=0]
173.194.210.125
alt4.xmpp-server.l.google.com:5269 [priority=20, weight=0]
173.194.65.125
...

Example 5. æ¥æ¾ä¸ä¸ª PGP å¬é¥

$ systemd-resolve --openpgp zbyszek@fedoraproject.org
d08ee310438ca124a6149ea5cc21b6313b390dce485576eff96f8722._openpgpkey.fedoraproject.org. IN OPENPGPKEY
mQINBFBHPMsBEACeInGYJCb+7TurKfb6wGyTottCDtiSJB310i37/6ZYoeIay/5soJjlMyf
MFQ9T2XNT/0LM6gTa0MpC1st9LnzYTMsT6tzRly1D1UbVI6xw0g0vE5y2Cjk3xUwAynCsSs
...

Example 6. æ¥æ¾ä¸ä¸ª TLS å¬é¥ (å¯ä»¥çç¥ "=tcp" ä¸ ":443")

$ systemd-resolve --tlsa=tcp fedoraproject.org:443
_443._tcp.fedoraproject.org IN TLSA 0 0 1 19400be5b7a31fb733917700789d2f0a2471c0c9d506c0e504c06c16d7cb17c0
-- Cert. usage: CA constraint
-- Selector: Full Certificate
-- Matching type: SHA-256

åè§

systemd(1), systemd-resolved.service(8)

NOTES

SRV

https://tools.ietf.org/html/rfc2782

DNS-SD

https://tools.ietf.org/html/rfc6763

OPENPGPKEY

https://tools.ietf.org/html/draft-wouters-dane-openpgp-02

TLSA

https://tools.ietf.org/html/rfc6698

Link-Local Multicast Name Resolution

https://tools.ietf.org/html/rfc4795

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