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systemctl edit で書き込めない

Last updated at Posted at 2023-11-08

事象

systemctl edit firewalld.serviceにて最下部に設定値を書き込み、保存すると、下記エラーが出て書き込めない。

Editing "/etc/systemd/system/firewalld.service.d/override.conf" canceled: temporary file is empty.

なお、環境は以下の通り

# cat /etc/redhat-release
CentOS Stream release 9
# uname -r
5.14.0-234.el9.x86_64

原因

よくよく編集画面を見てみると、「 Lines below this comment will be discarded」(このコメント以下の行は破棄される)とある。
「### Anything between here and the comment below will become the new contents of the file」と「### Lines below this comment will be discarded」の間に記述する必要があったため、最下部に記入した設定値が無効となって、空判定されているのだった。

### Editing /etc/systemd/system/firewalld.service.d/override.conf
### Anything between here and the comment below will become the new contents of the file

<---ここに設定を記述する--->

### Lines below this comment will be discarded

### /usr/lib/systemd/system/firewalld.service
# [Unit]
# Description=firewalld - dynamic firewall daemon
# Before=network-pre.target
# Wants=network-pre.target
# After=dbus.service
# After=polkit.service
# Conflicts=iptables.service ip6tables.service ebtables.service ipset.service nftables.service
# Documentation=man:firewalld(1)
#
# [Service]
# EnvironmentFile=-/etc/sysconfig/firewalld

参考

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