fedora-docs-l10n/fedora-coreos/master/pages/tutorial-containers — Chinese (Simplified) (zh_CN) @ Fedora Weblate: [Install] WantedBy=multi-user.target

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	Setting up SSH access and starting containers at boot
	Complete all the steps described in the xref:tutorial-setup.adoc[initial setup page] before starting this tutorial. Make sure you have create file `ssh-key.pub` following the instructions provided in the https://docs.fedoraproject.org/en-US/fedora-coreos/tutorial-setup/#_ssh_public_key[prerequisites] for the tutorial. We will use this key in the Butane configuration file that we are about to write.
	In this tutorial, we will set up SSH access and start a container at boot. Fedora CoreOS is focused on running applications/services in containers thus we recommend trying to run containers and avoid modifying the host directly. Running containers and keeping a pristine host layer makes automatic updates more reliable and allows for separation of concerns with the Fedora CoreOS team responsible for the OS and end-user operators/sysadmins responsible for the applications.
	As usual, we will set up console autologin, a hostname, systemd pager configuration, but we will also:
	Add an SSH Key for the `core` user from the local `ssh-key.pub` file.
	Add a systemd service (`failure.service`) that fails on boot.
	Add a running container via a Podman https://docs.podman.io/en/latest/markdown/podman-systemd.unit.5.html[quadlet systemd.unit container file].
	This `etcd-member.container` will then be associated with a `etcd-member.service` on the running system.
	`etcd-member.service` will launch and manage the lifecycle of the container using `podman`.
	Writing the Butane config and converting to Ignition
	Similarly to what we did in the second provisioning scenario, we will write the following Butane config in a file called `containers.bu`:
	Example with automatic serial console login, SSH key, and multiple systemd units
	variant: fcos version: {butane-latest-stable-spec} passwd: users: - name: core ssh_authorized_keys_local: - ssh-key.pub systemd: units: - name: serial-getty@ttyS0.service dropins: - name: autologin-core.conf contents: \| [Service] # Override Execstart in main unit ExecStart= # Add new Execstart with `-` prefix to ignore failure ExecStart=-/usr/sbin/agetty --autologin core --noclear %I $TERM TTYVTDisallocate=no - name: failure.service enabled: true contents: \| [Service] Type=oneshot ExecStart=/usr/bin/false RemainAfterExit=yes
	[Install] WantedBy=multi-user.target storage: files: - path: /etc/hostname mode: 0644 contents: inline: \| tutorial - path: /etc/profile.d/systemd-pager.sh mode: 0644 contents: inline: \| # Tell systemd to not use a pager when printing information export SYSTEMD_PAGER=cat - path: /etc/containers/systemd/etcd-member.container mode: 0644 contents: inline: \| [Unit] Description=Run a single node etcd After=network-online.target Wants=network-online.target
	[Container] ContainerName=etcd Image=quay.io/coreos/etcd:latest Network=host Volume=etcd-data:/etcd-data Exec=/usr/local/bin/etcd \ --name node1 --data-dir /etcd-data \ --initial-advertise-peer-urls http://127.0.0.1:2380 \ --listen-peer-urls http://127.0.0.1:2380 \ --advertise-client-urls http://127.0.0.1:2379 \ --listen-client-urls http://127.0.0.1:2379 \ --initial-cluster node1=http://127.0.0.1:2380
	[Install] WantedBy=multi-user.target
	Run Butane to convert that to an Ignition config:
	butane --pretty --strict --files-dir=./ containers.bu --output containers.ign
	Now let's provision it:
	# Setup the correct SELinux label to allow access to the config chcon --verbose --type svirt_home_t containers.ign
	# Start a Fedora CoreOS virtual machine virt-install --name=fcos --vcpus=2 --ram=2048 --os-variant=fedora-coreos-stable \ --import --network=bridge=virbr0 --graphics=none \ --qemu-commandline="-fw_cfg name=opt/com.coreos/config,file=${PWD}/containers.ign" \ --disk=size=20,backing_store=${PWD}/fedora-coreos.qcow2
	On the console you will see:
	Fedora CoreOS 38.20230709.3.0 Kernel 6.3.11-200.fc38.x86_64 on an x86_64 (ttyS0)
	SSH host key: SHA256:T5V4oXMZ0UJ7WRGzNiUOkggO7p5yojTVBUxa6N3vIoQ (ECDSA) SSH host key: SHA256:oBAvj2kaKKKK++gnchTbxpp/iphvX6EHr0EynwXZ19c (ED25519) SSH host key: SHA256:Yg2fdA7GC1eoHtIjawDA+WffTKTuNy5ZhQHUJx5GRHk (RSA) enp1s0: 192.168.124.119 fe80::9b5c:330d:2020:1c9e Ignition: ran on 2023/08/03 18:17:45 UTC (this boot) Ignition: user-provided config was applied Ignition: wrote ssh authorized keys file for user: core tutorial login: core (automatic login)
	Fedora CoreOS 38.20230709.3.0 [systemd] Failed Units: 1 failure.service [core@tutorial ~]$
	If you would like to connect via SSH, disconnect from the serial console by pressing `CTRL` + `]` and then use the reported IP address for the NIC from the serial console to log in using the `core` user via SSH:
	$ ssh core@192.168.124.119 The authenticity of host '192.168.124.119 (192.168.124.119)' can't be established. ED25519 key fingerprint is SHA256:oBAvj2kaKKKK++gnchTbxpp/iphvX6EHr0EynwXZ19c. This key is not known by any other names Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '192.168.124.119' (ED25519) to the list of known hosts. Fedora CoreOS 38.20230709.3.0 Tracker: https://github.com/coreos/fedora-coreos-tracker Discuss: https://discussion.fedoraproject.org/tag/coreos
	Last login: Thu Aug 3 18:18:06 2023 [systemd] Failed Units: 1 failure.service
	The `Failed Units` message is coming from the https://github.com/coreos/console-login-helper-messages[console login helper messages] helpers. This particular helper shows us when `systemd` has services that are in a failed state. In this case we made `failure.service` with `ExecStart=/usr/bin/false`, so we intentionally created a service that will always fail in order to illustrate the helper messages.
	Now that we’re up and don’t have any real failures we can check out the status of `etcd-member.service`, which was generated from our `etcd-member.container` file.
	[core@tutorial ~]$ systemctl status --full etcd-member.service ● etcd-member.service - Run a single node etcd Loaded: loaded (/etc/containers/systemd/etcd-member.container; generated) Drop-In: /usr/lib/systemd/system/service.d └─10-timeout-abort.conf Active: active (running) since Thu 2023-08-03 18:17:57 UTC; 2min 24s ago Main PID: 1553 (conmon) Tasks: 10 (limit: 2238) Memory: 86.5M CPU: 3.129s CGroup: /system.slice/etcd-member.service ├─libpod-payload-31af97b0ef902b3b3b3d717bd98947b209701b9585db2129ca53f4b33962415e │ └─1555 /usr/local/bin/etcd ... └─runtime └─1553 /usr/bin/conmon ...

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