Ubuntu & RPi4 続き – 雑多に徒然と

日時が大きくずれていると apt update などが実行できない。まずは時刻確認。

http://manpages.ubuntu.com/manpages/focal/en/man1/date.1.html

date # 日時を表示

1	date # 日時を表示

NTPサーバを利用できない環境なのでちょっと設定を変更

sudo timedatectl set-ntp false
sudo timedatectl set-time "2022-03-25 13:35:45:00"

1 2	sudo timedatectl set-ntp false sudo timedatectl set-time "2022-03-25 13:35:45:00"

NTPサーバを利用するならまずは /etc/systemd/timesyncd.conf を編集する。

sudo nano /etc/systemd/timesyncd.conf

1	sudo nano /etc/systemd/timesyncd.conf

 GNU nano 4.8              /etc/systemd/timesyncd.conf
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See timesyncd.conf(5) for details.

[Time]
#NTP=
#FallbackNTP=ntp.ubuntu.com
#RootDistanceMaxSec=5
#PollIntervalMinSec=32
#PollIntervalMaxSec=2048
NTP=ntp.nict.jp
FallbackNTP=ntp1.jst.mfeed.ad.jp ntp.nttsl.mfeed.ne.jp

GNU nano 4.8 /etc/systemd/timesyncd.conf

# systemd is free software; you can redistribute it and/or modify it

# under the terms of the GNU Lesser General Public License as published by

# the Free Software Foundation; either version 2.1 of the License, or

# (at your option) any later version.

# Entries in this file show the compile time defaults.

# You can change settings by editing this file.

# Defaults can be restored by simply deleting this file.

# See timesyncd.conf(5) for details.

[Time]

#NTP=

#FallbackNTP=ntp.ubuntu.com

#RootDistanceMaxSec=5

#PollIntervalMinSec=32

#PollIntervalMaxSec=2048

NTP=ntp.nict.jp

FallbackNTP=ntp1.jst.mfeed.ad.jp ntp.nttsl.mfeed.ne.jp

FallbackNTPはNTPとうまくいかなかったときのため。timesyncdを再起動。そしてステータスを確認。

sudo systemctl restart systemd-timesyncd.service
sudo systemctl status systemd-timesyncd

1 2	sudo systemctl restart systemd-timesyncd.service sudo systemctl status systemd-timesyncd

● systemd-timesyncd.service - Network Time Synchronization
     Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; ve>
     Active: active (running) since Fri 2022-03-25 09:38:26 JST; 1min 47s ago
       Docs: man:systemd-timesyncd.service(8)
   Main PID: 1134 (systemd-timesyn)
     Status: "Connecting to time server 61.205.120.130:123 (ntp.nict.jp)."
      Tasks: 2 (limit: 9025)
     CGroup: /system.slice/systemd-timesyncd.service
             mq1134 /lib/systemd/systemd-timesyncd
...
lines 1-19/19 (END)

● systemd-timesyncd.service - Network Time Synchronization

Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; ve>

Active: active (running) since Fri 2022-03-25 09:38:26 JST; 1min 47s ago

Docs: man:systemd-timesyncd.service(8)

Main PID: 1134 (systemd-timesyn)

Status: "Connecting to time server 61.205.120.130:123 (ntp.nict.jp)."

Tasks: 2 (limit: 9025)

CGroup: /system.slice/systemd-timesyncd.service

mq1134 /lib/systemd/systemd-timesyncd

...

lines 1-19/19 (END)

Status 行のところに接続先が表示される。（[q]で終了）

IPアドレスの設定

そもそもネットワークに接続できているのか？ということでIPアドレスを表示

http://manpages.ubuntu.com/manpages/focal/en/man8/ip.8.html

ip a

ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo

valid_lft forever preferred_lft forever

inet6 ::1/128 scope host

valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000

link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff

3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000

link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff

おや。取れていない。（MACアドレス部分は**で伏せています。）

ひとまず、設定を確認。viの方が良いのでしょうけど、nanoで失礼。

sudo nano /etc/netplan/91_config.yaml

1	sudo nano /etc/netplan/91_config.yaml

# This file is generated from information provided by the datasource.  Changes
# to it will not persist across an instance reboot.  To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:

    version: 2
    wifis:
        renderer: networkd
        wlan0:
            access-points:
                ●●●●:
                    password: 502a7bf76ee24ee4dd4f7cc74c1722f351c156de110e891bf>
            dhcp4: true
            optional: true

# This file is generated from information provided by the datasource. Changes

# to it will not persist across an instance reboot. To disable cloud-init's

# network configuration capabilities, write a file

# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:

# network: {config: disabled}

network:

version: 2

wifis:

renderer: networkd

wlan0:

access-points:

●●●●:

password: 502a7bf76ee24ee4dd4f7cc74c1722f351c156de110e891bf>

dhcp4: true

optional: true

●●●●部分はSSID名。passwordはHash(暗号化)されているのでわからないけど、あってそうな気がする。パスワードを入力する場合は、「password:」半角スペースを空けてダブルクォーテーションで括ればOK。

nanoから抜けるには、キーボードで[ctrl]+[x]。

変更している場合は保存するか聞いてくるので[y]を入力して、ファイル名を入力して[Enter](50-colud-init.yaml は編集しないことを推奨されているので名前を付けて保存しましょう。この場合、先頭には50より大きな数値を指定し、拡張子をyamlにすればOK(例 60_wifi.yaml))

次のコマンドで設定を反映。

sudo netplan apply

1	sudo netplan apply

もう一度、IPアドレスを表示して確認（※すぐには取得できないのでしばらく待ってから[ip a]を打ち込む）

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff
    inet △△.△△.△△.△△/24 brd △△.△△.△△.255 scope global dynamic wlan0
       valid_lft 690138sec preferred_lft 690138sec
    inet6 xxxx::xxxx:xxxx:xxxx:xxxx/64 scope link
       valid_lft forever preferred_lft forever

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo

valid_lft forever preferred_lft forever

inet6 ::1/128 scope host

valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000

link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff

3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000

link/ether **:**:**:**:**:** brd ff:ff:ff:ff:ff:ff

inet △△.△△.△△.△△/24 brd △△.△△.△△.255 scope global dynamic wlan0

valid_lft 690138sec preferred_lft 690138sec

inet6 xxxx::xxxx:xxxx:xxxx:xxxx/64 scope link

valid_lft forever preferred_lft forever

IPアドレス、げっと(^o^)/

何はともあれupdate

http://manpages.ubuntu.com/manpages/focal/en/man8/apt-offline.8.html

sudo apt update

1	sudo apt update

続いてアップグレード。頭に「dist-」を付けると必要な分だけというイメージ。途中で確認してくるので[y]を打つ。

sudo apt dist-upgrade

1	sudo apt dist-upgrade

日本語化

続いて日本語化

sudo apt install -y language-pack-ja
sudo localectl set-locale LANG=ja_JP.UTF-8

1 2	sudo apt install -y language-pack-ja sudo localectl set-locale LANG=ja_JP.UTF-8

確認だ。

localectl list-locales

1	localectl list-locales

C.UTF-8
en_US.UTF-8
ja_JP.UTF-8

C.UTF-8

en_US.UTF-8

ja_JP.UTF-8

localectl status

1	localectl status

   System Locale: LANG=ja_JP.UTF-8
       VC Keymap: jp106
      X11 Layout: jp
       X11 Model: pc105

System Locale: LANG=ja_JP.UTF-8

VC Keymap: jp106

X11 Layout: jp

X11 Model: pc105

再起動すると日本語も表示されるようになるよ。