Difference between revisions of "Updating Debian template"
(→Update: Stop a VE, remove its IP) |
(I think the common abbreviation for Hardware Node is HN, not HW. Also why does it suddenly use VE0?) |
||
| Line 5: | Line 5: | ||
First, you need to create a VE based on the template you want to update. Here is an example: | First, you need to create a VE based on the template you want to update. Here is an example: | ||
| − | [ | + | [HN]# vzctl create 555 --ostemplate debian-4.0-i386-minimal |
Next, you want to specify an IP address and a nameserver: | Next, you want to specify an IP address and a nameserver: | ||
| − | [ | + | [HN]# vzctl set 555 --ipadd x.x.x.x --nameserver y.y.y.y --save |
You can get the value of nameserver from your /etc/resolv.conf. Your VE should have an Internet access, so you either supply a public IP, or see [[using NAT for VE with private IPs]] for information about how to use private IP and NAT. | You can get the value of nameserver from your /etc/resolv.conf. Your VE should have an Internet access, so you either supply a public IP, or see [[using NAT for VE with private IPs]] for information about how to use private IP and NAT. | ||
Finally, check that Internet is working from inside a VE: | Finally, check that Internet is working from inside a VE: | ||
| − | [ | + | [HN]# vzctl exec 555 ping -n 3 www.ru |
== Update == | == Update == | ||
Enter the VE: | Enter the VE: | ||
| − | [ | + | [HN]# vzctl enter 555 |
Update metadata and install updates: | Update metadata and install updates: | ||
| Line 37: | Line 37: | ||
Now, rename the existing template cache: | Now, rename the existing template cache: | ||
| − | [ | + | [HN]# mv /vz/template/cache/debian-4.0-i386-minimal.tar.gz{,-old} |
Now create a new tarball: | Now create a new tarball: | ||
| − | [ | + | [HN]# cd /vz/private/555 |
| − | [ | + | [HN]# tar czf /vz/template/cache/debian-4.0-i386-minimal.tar.gz . |
Clean up: | Clean up: | ||
| − | [ | + | [HN]# vzctl destroy 555 |
| − | [ | + | [HN]# rm -f /etc/vz/conf/555.conf.destroyed |
== Test new template cache == | == Test new template cache == | ||
First, compare the sizes of the old and the new template caches: | First, compare the sizes of the old and the new template caches: | ||
| − | [ | + | [HN]# ls -lh /vz/template/cache/debian-4.0-i386-minimal* |
-rw-r--r-- 1 root root 55M 2007-11-13 18:11 /vz/template/cache/debian-4.0-i386-minimal.tar.gz | -rw-r--r-- 1 root root 55M 2007-11-13 18:11 /vz/template/cache/debian-4.0-i386-minimal.tar.gz | ||
-rw-r--r-- 1 root root 53M 2007-08-31 02:46 /vz/template/cache/debian-4.0-i386-minimal.tar.gz-old | -rw-r--r-- 1 root root 53M 2007-08-31 02:46 /vz/template/cache/debian-4.0-i386-minimal.tar.gz-old | ||
| Line 56: | Line 56: | ||
Try to create and start VE made from your new template: | Try to create and start VE made from your new template: | ||
| − | [ | + | [HN]# vzctl create 222 --ostemplate debian-4.0-i386-minimal |
| − | [ | + | [HN]# vzctl set 222 --ipadd 10.0.0.222 --save |
| − | [ | + | [HN]# vzctl start 222 |
| − | [ | + | [HN]# vzctl enter 222 |
Now execute a few basic commands to check VE is fine. Examples are: <code>ps axf</code>, <code>dpkg -l</code>, etc. | Now execute a few basic commands to check VE is fine. Examples are: <code>ps axf</code>, <code>dpkg -l</code>, etc. | ||
Finally, clean up the testing VE: | Finally, clean up the testing VE: | ||
| − | [ | + | [HN]# vzctl stop 222 |
| − | [ | + | [HN]# vzctl destroy 222 |
| − | [ | + | [HN]# rm -f /etc/vz/conf/222.conf.destroyed |
Revision as of 00:51, 16 November 2007
This article describes how you can update an existing precreated Debian or Ubuntu template. The procedure is pretty easy.
Contents
Creating/configuring a temporary VE
First, you need to create a VE based on the template you want to update. Here is an example:
[HN]# vzctl create 555 --ostemplate debian-4.0-i386-minimal
Next, you want to specify an IP address and a nameserver:
[HN]# vzctl set 555 --ipadd x.x.x.x --nameserver y.y.y.y --save
You can get the value of nameserver from your /etc/resolv.conf. Your VE should have an Internet access, so you either supply a public IP, or see using NAT for VE with private IPs for information about how to use private IP and NAT.
Finally, check that Internet is working from inside a VE:
[HN]# vzctl exec 555 ping -n 3 www.ru
Update
Enter the VE:
[HN]# vzctl enter 555
Update metadata and install updates:
[VE]# apt-get update && apt-get upgrade
Cleanup:
[VE]# apt-get clean [VE]# > /etc/resolv.conf
Clean unused log files, .bash_history etc, then exit from a VE:
[VE] # exit
Stop a VE, remove its IP:
[VE0]# vzctl stop 555 [VE0]# vzctl set 555 --ipdel all --save
Packing a new template cache
Now, rename the existing template cache:
[HN]# mv /vz/template/cache/debian-4.0-i386-minimal.tar.gz{,-old}
Now create a new tarball:
[HN]# cd /vz/private/555 [HN]# tar czf /vz/template/cache/debian-4.0-i386-minimal.tar.gz .
Clean up:
[HN]# vzctl destroy 555 [HN]# rm -f /etc/vz/conf/555.conf.destroyed
Test new template cache
First, compare the sizes of the old and the new template caches:
[HN]# ls -lh /vz/template/cache/debian-4.0-i386-minimal* -rw-r--r-- 1 root root 55M 2007-11-13 18:11 /vz/template/cache/debian-4.0-i386-minimal.tar.gz -rw-r--r-- 1 root root 53M 2007-08-31 02:46 /vz/template/cache/debian-4.0-i386-minimal.tar.gz-old
The sizes should not differ much.
Try to create and start VE made from your new template:
[HN]# vzctl create 222 --ostemplate debian-4.0-i386-minimal [HN]# vzctl set 222 --ipadd 10.0.0.222 --save [HN]# vzctl start 222 [HN]# vzctl enter 222
Now execute a few basic commands to check VE is fine. Examples are: ps axf, dpkg -l, etc.
Finally, clean up the testing VE:
[HN]# vzctl stop 222 [HN]# vzctl destroy 222 [HN]# rm -f /etc/vz/conf/222.conf.destroyed
