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Linux server.a-j.media 5.14.0-570.44.1.el9_6.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Sep 17 10:32:11 EDT 2025 x86_64
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Cant read /etc/named.conf

File Name : 20-chrony-dhcp

#!/usr/bin/sh
# This is a NetworkManager dispatcher script for chronyd to update
# its NTP sources with servers from DHCP options passed by NetworkManager
# in the DHCP4_NTP_SERVERS and DHCP6_DHCP6_NTP_SERVERS environment variables.

export LC_ALL=C

interface=$1
action=$2

[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network
[ -f /etc/sysconfig/network-scripts/ifcfg-"${interface}" ] && \
    . /etc/sysconfig/network-scripts/ifcfg-"${interface}"

chronyc=/usr/bin/chronyc
server_options=${NTPSERVERARGS:-iburst}
server_dir=/run/chrony-dhcp

dhcp_server_file=$server_dir/$interface.sources
dhcp_ntp_servers="$DHCP4_NTP_SERVERS $DHCP6_DHCP6_NTP_SERVERS"

add_servers_from_dhcp() {
    rm -f "$dhcp_server_file"

# Don't add NTP servers if PEERNTP=no specified; return early.
    [ "$PEERNTP" = "no" ] && return

for server in $dhcp_ntp_servers; do
        # Check for invalid characters (from the DHCPv6 NTP FQDN suboption)
        len1=$(printf '%s' "$server" | wc -c)
        len2=$(printf '%s' "$server" | tr -d -c 'A-Za-z0-9:.-' | wc -c)
        if [ "$len1" -ne "$len2" ] || [ "$len2" -lt 1 ] || [ "$len2" -gt 255 ]; then
          continue
        fi

printf 'server %s %s\n' "$server" "$server_options" >> "$dhcp_server_file"
    done
    $chronyc reload sources > /dev/null 2>&1 || :
}

clear_servers_from_dhcp() {
    if [ -f "$dhcp_server_file" ]; then
        rm -f "$dhcp_server_file"
        $chronyc reload sources > /dev/null 2>&1 || :
    fi
}

mkdir -p $server_dir

case "$action" in
    up|dhcp4-change|dhcp6-change)
        add_servers_from_dhcp;;
    down)
        clear_servers_from_dhcp;;
esac

exit 0

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2026-08-04 10:07:40
..	dir	-	root/root	drwxr-xr-x	2026-08-04 10:07:33
no-wait.d	dir	-	root/root	drwxr-xr-x	2026-08-04 10:07:33
pre-down.d	dir	-	root/root	drwxr-xr-x	2026-08-04 10:07:33
pre-up.d	dir	-	root/root	drwxr-xr-x	2026-08-04 10:07:40
11-dhclient	text/x-shellscript	1.04 KB	root/root	-rwxr-xr-x	2026-04-09 12:58:17
20-chrony-dhcp	text/plain	1.61 KB	root/root	-rwxr-xr-x	2026-04-09 12:49:35
20-chrony-onoffline	text/plain	791 B	root/root	-rwxr-xr-x	2025-08-27 12:05:31