Home > 備忘録 > 時刻同期 > ntp のインストール( 65 )
Feora18にntpをインストールすることに関する記録です。chrony が起動していると ntp が自動起動しないので chrony を停止することからはじめる
[root@server]# systemctl stop chrony.service[root@server]# systemctl disable chrony.service[root@server]# yum -y install ntp[root@server]# vi /etc/ntp.conf
# For more information about this file, see the man pages
# ntp.conf(5), ntp_acc(5), ntp_auth(5), ntp_clock(5), ntp_misc(5), ntp_mon(5).
driftfile /var/lib/ntp/drift
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.1
restrict -6 ::1
# Hosts on local network are less restricted.
restrict 192.168.172.0 mask 255.255.255.0 nomodify notrap ←内部からの時刻同期を許可する範囲
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#server 0.fedora.pool.ntp.org iburst ←以下4行をコメントアウトする
#server 1.fedora.pool.ntp.org iburst
#server 2.fedora.pool.ntp.org iburst
#server 3.fedora.pool.ntp.org iburst
server ntp1.jst.mfeed.ad.jp ←ここにntpサーバーを追記する(3行追加)
server ntp2.jst.mfeed.ad.jp
server ntp3.jst.mfeed.ad.jp
#broadcast 192.168.1.255 autokey # broadcast server
#broadcastclient # broadcast client
#broadcast 224.0.1.1 autokey # multicast server
#multicastclient 224.0.1.1 # multicast client
#manycastserver 239.255.254.254 # manycast server
#manycastclient 239.255.254.254 autokey # manycast client
# Enable public key cryptography.
#crypto
includefile /etc/ntp/crypto/pw
# Key file containing the keys and key identifiers used when operating
# with symmetric key cryptography.
keys /etc/ntp/keys
# Specify the key identifiers which are trusted.
#trustedkey 4 8 42
# Specify the key identifier to use with the ntpdc utility.
#requestkey 8
# Specify the key identifier to use with the ntpq utility.
#controlkey 8
# Enable writing of statistics records.
#statistics clockstats cryptostats loopstats peerstats[root@server]# ntpdate ntp1.jst.mfeed.ad.jp
20 Feb 10:48:51 ntpdate[10942]: adjust time server 210.173.160.27 offset -0.005203 sec[root@server]# systemctl start ntpd.service[root@server]# systemctl enable ntpd.service[root@server]# systemctl status ntpd.service[root@server]# ntpq -p