Sou novo em contêineres e estou tentando entendê-los.
Não consigo descobrir como fazer login como usuário root no contêiner. Não consigo aceitar a senha temporária ou alterar a senha.
(Sim, tenho certeza de que digitei a senha corretamente, embora ela seja exibida apenas uma vez na saída a seguir. Digitei a senha temporária em mim mesmo, digitei outra e copiei e colei a senha temporária. E fiz tudo isso repetidamente. Excluo as outras tentativas de concisão.)
Alguém pode me ajudar a continuar?
Suspeito de um problema de permissões, mas não consegui descobrir quais são as permissões ...
sed: can't read /var/lib/lxc/centostest/rootfs/etc/init/tty.conf: No such file or directory
Storing root password in '/var/lib/lxc/centostest/tmp_root_pass'
chpasswd: cannot open /etc/passwd
Expiring password for user root.
passwd: Libuser error at line: 413 - Error replacing '/etc/passwd': Permission denied.
passwd: Error
Aqui está toda a saída do terminal da criação do contêiner por meio de tentativas de acesso root e tentativas de redefinição de senha ...
[root@centos01 ~]# lxc-create -n centostest -t centos
Host CPE ID from /etc/os-release: cpe:/o:centos:centos:7
Checking cache download in /var/cache/lxc/centos/x86_64/7/rootfs ...
Cache found. Updating...
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: linorg.usp.br
* extras: linorg.usp.br
* updates: linorg.usp.br
No packages marked for update
Loaded plugins: fastestmirror
Cleaning repos: base extras updates
0 package files removed
Update finished
Copy /var/cache/lxc/centos/x86_64/7/rootfs to /var/lib/lxc/centostest/rootfs ...
Copying rootfs to /var/lib/lxc/centostest/rootfs ...
sed: can't read /var/lib/lxc/centostest/rootfs/etc/init/tty.conf: No such file or directory
Storing root password in '/var/lib/lxc/centostest/tmp_root_pass'
chpasswd: cannot open /etc/passwd
Expiring password for user root.
passwd: Libuser error at line: 413 - Error replacing '/etc/passwd': Permission denied.
passwd: Error
sed: can't read /var/lib/lxc/centostest/rootfs/etc/rc.sysinit: No such file or directory
sed: can't read /var/lib/lxc/centostest/rootfs/etc/rc.d/rc.sysinit: No such file or directory
Container rootfs and config have been created.
Edit the config file to check/enable networking setup.
The temporary root password is stored in:
'/var/lib/lxc/centostest/tmp_root_pass'
The root password is set up as expired and will require it to be changed
at first login, which you should do as soon as possible. If you lose the
root password or wish to change it without starting the container, you
can change it from the host by running the following command (which will
also reset the expired flag):
chroot /var/lib/lxc/centostest/rootfs passwd
[root@centos01 ~]# vi /var/lib/lxc/centostest/tmp_root_pass
[root@centos01 ~]# lxc-start -n centostest -d
[root@centos01 ~]# lxc-console -n centostest -t 0
Connected to tty 0
Type <Ctrl+a q> to exit the console, <Ctrl+a Ctrl+a> to enter Ctrl+a itself
CentOS Linux 7 (Core)
Kernel 3.10.0-693.17.1.el7.x86_64 on an x86_64
centostest login: root
Password:
Login incorrect
centostest login: [root@centos01 ~]#
[root@centos01 ~]# lxc-stop -n centostest
[root@centos01 ~]# chroot /var/lib/lxc/centostest/rootfs passwd
Changing password for user root.
New password:
Retype new password:
passwd: Authentication token manipulation error
[root@centos01 ~]# lxc-start -n centostest -d
[root@centos01 ~]# lxc-console -n centostest -t 0
Connected to tty 0
Type <Ctrl+a q> to exit the console, <Ctrl+a Ctrl+a> to enter Ctrl+a itself
CentOS Linux 7 (Core)
Kernel 3.10.0-693.17.1.el7.x86_64 on an x86_64
centostest login: root
Password:
Login incorrect
Hardware ...
Mais tarde ...
Olhando em volta com top mostra systemd-journal a 100%. Quando encerro a instância do LXC que desaparece.
Então eu fui para journalctl . Isto é o que eu vejo quando eu journalctl -f quando eu inicio a instância ...
Feb 28 13:11:15 centos01.lan kernel: virbr3: port 2(vethGC75VP) entered blocking state
Feb 28 13:11:15 centos01.lan kernel: virbr3: port 2(vethGC75VP) entered disabled state
Feb 28 13:11:15 centos01.lan kernel: device vethGC75VP entered promiscuous mode
Feb 28 13:11:15 centos01.lan kernel: IPv6: ADDRCONF(NETDEV_UP): vethGC75VP: link is not ready
Feb 28 13:11:15 centos01.lan NetworkManager[3741]: <info> [1519841475.4600] manager: (veth5WRBVL): new Veth device (/org/freedesktop/NetworkManager/Devices/31)
Feb 28 13:11:15 centos01.lan NetworkManager[3741]: <info> [1519841475.4645] manager: (vethGC75VP): new Veth device (/org/freedesktop/NetworkManager/Devices/32)
Feb 28 13:11:15 centos01.lan kernel: IPv6: ADDRCONF(NETDEV_CHANGE): vethGC75VP: link becomes ready
Feb 28 13:11:15 centos01.lan kernel: virbr3: port 2(vethGC75VP) entered blocking state
Feb 28 13:11:15 centos01.lan kernel: virbr3: port 2(vethGC75VP) entered forwarding state
Feb 28 13:11:15 centos01.lan NetworkManager[3741]: <info> [1519841475.4936] device (vethGC75VP): link connected
O que não faz sentido para mim é que posso ver a instância do LXC puxando um IP na LAN.
Tags administrator lxc centos centos-7