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saisp:labs:07:contents:02 [2013/11/11 00:46] 127.0.0.1 external edit |
saisp:labs:07:contents:02 [2014/04/14 11:41] (current) alexandru.carp |
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| - | ==== 02. Lorem ipsum ==== | + | ==== 02. [20p] Interactiunea cu containerele ==== |
| + | Masina virtuala **saisp-vm-1** contine un container deja creat, cu numele ''ct1''. | ||
| + | |||
| + | Folosind comanda ''lxc-start'', vom porni containerul: | ||
| + | <code bash> | ||
| + | root@saisp-vm-1:~# lxc-start -n ct1 | ||
| + | |||
| + | INIT: version 2.88 booting | ||
| + | Using makefile-style concurrent boot in runlevel S. | ||
| + | Cleaning up ifupdown.... | ||
| + | Setting up networking.... | ||
| + | Activating lvm and md swap...done. | ||
| + | Checking file systems...fsck from util-linux-ng 2.17.2 | ||
| + | done. | ||
| + | Mounting local filesystems...done. | ||
| + | Activating swapfile swap...done. | ||
| + | Cleaning up temporary files.... | ||
| + | Setting kernel variables ...done. | ||
| ... | ... | ||
| + | Cleaning up temporary files.... | ||
| + | INIT: Entering runlevel: 3 | ||
| + | Using makefile-style concurrent boot in runlevel 3. | ||
| + | Starting OpenBSD Secure Shell server: sshd. | ||
| + | |||
| + | Debian GNU/Linux 6.0 ct1 console | ||
| + | |||
| + | ct1 login: | ||
| + | </code> | ||
| + | |||
| + | Observam ca terminalul este atasat la container, acesta fiind pornit in **foreground**. | ||
| + | |||
| + | Pentru a va loga in container, folositi credentialele **root** / **root**. | ||
| + | |||
| + | Vom opri containerul din interiorul acestuia, ca pe orice statie Linux, folosind ''halt'': | ||
| + | <code bash> | ||
| + | root@ct1:~# halt | ||
| + | |||
| + | Broadcast message from root@ct1 (console) (Sun Apr 13 18:22:16 2014): | ||
| + | |||
| + | The system is going down for system halt NOW! | ||
| + | INIT: Switching to runlevel: 0 | ||
| + | INIT: Sending processes the TERM signal | ||
| + | root@ct1:~# Using makefile-style concurrent boot in runlevel 0. | ||
| + | mount: / is busy | ||
| + | root@saisp-vm-1:~# | ||
| + | </code> | ||
| + | |||
| + | O varianta mai comoda este pornirea containerului in **background**. Vom adauga parametrul ''-d'' la comanda ''lxc-start'': | ||
| + | <code bash> | ||
| + | root@saisp-vm-1:~# lxc-start -n ct1 -d | ||
| + | </code> | ||
| + | |||
| + | Verificam starea containerului folosind ''lxc-info'': | ||
| + | <code bash> | ||
| + | root@saisp-vm-1:~# lxc-info -n ct1 | ||
| + | state: RUNNING | ||
| + | pid: 8269 | ||
| + | </code> | ||
| + | |||
| + | Pentru a putea interactiona cu un container pornit in background, trebuie sa ne conectam la consola acestuia. Folosim comanda ''lxc-console'': | ||
| + | <code bash> | ||
| + | root@saisp-vm-1:~# lxc-console -n ct1 | ||
| + | |||
| + | Type <Ctrl+a q> to exit the console, <Ctrl+a Ctrl+a> to enter Ctrl+a itself | ||
| + | |||
| + | Debian GNU/Linux 6.0 ct1 tty1 | ||
| + | ct1 login: | ||
| + | </code> | ||
| + | Apoi, ne putem deconecta, fara a opri containerul, folosind combinatie de taste **CTRL+A, Q**. | ||
