ezjail-admin install ezjail-admin create tonderon.nasqueron.drake 'em0|172.27.26.34' ezjail-admin start tonderon.nasqueron.drake
Description
Description
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Resolved | dereckson | T167 Create a jail on Ysul to serve files like the Jenks backup | |||
| Resolved | dereckson | T181 Configure ezjail for a base jail environment | |||
| Resolved | dereckson | T182 Enable ZFS in /etc/rc.conf on Ysul |
Event Timeline
Comment Actions
Configuration files
- /etc/rc.conf: added ezjail_enable="YES"
- /usr/local/etc/ezjail.conf: P29
ZFS pool history
Base:
2014-12-02.10:14:28 zfs create -o mountpoint=/usr/local/jails arcology/jails
2014-12-02.10:14:34 zfs create arcology/jails/fulljail
2014-12-02.10:18:04 zfs create arcology/jails/basejail
2014-12-02.10:18:04 zfs snapshot arcology/jails/basejail@20141125_10:18:04
2014-12-02.10:20:58 zfs rename arcology/jails/fulljail arcology/jails/newjail
Tonderon:
2014-12-02.10:33:47 zfs create -o mountpoint=/usr/local/jails/tonderon.nasqueron.drake arcology/jails/tonderon.nasqueron.drake
2014-12-02.10:33:47 zfs snapshot arcology/jails/newjail@_createnewjailtmp
2014-12-02.10:33:49 zfs receive -F arcology/jails/tonderon.nasqueron.drake
2014-12-02.10:33:49 zfs destroy arcology/jails/tonderon.nasqueron.drake@_createnewjailtmp
2014-12-02.10:33:54 zfs destroy arcology/jails/newjail@_createnewjailtmp
Test jail
$ jls JID IP Address Hostname Path 19 172.27.26.34 tonderon.nasqueron.drake /usr/local/jails/tonderon.nasqueron.drake $ jexec 19 tcsh $ ps auxw USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND root 72693 0.0 0.1 14424 1916 - IsJ 10:36AM 0:00.01 /usr/sbin/syslogd -s root 72773 0.0 0.1 23976 5292 - SsJ 10:36AM 0:00.01 sendmail: accepting connections (sendmail) smmsp 72776 0.0 0.1 23976 5096 - IsJ 10:36AM 0:00.00 sendmail: Queue runner@00:30:00 for /var/spool/clientmqueue (sendmail) root 72780 0.0 0.1 16520 2048 - IsJ 10:36AM 0:00.00 /usr/sbin/cron -s root 72825 0.0 0.1 23488 3336 17 RJ 10:37AM 0:00.02 tcsh root 72827 0.0 0.1 16588 2224 17 R+J 10:37AM 0:00.00 ps auxw $ df -h Filesystem Size Used Avail Capacity Mounted on arcology/jails/tonderon.nasqueron.drake 96G 1.9M 96G 0% /
Note: ZFS snapshots to be able to rollback
The offered retention settings by ezjail sample configuration file seems interesting:
ezjail_default_retention_policy="4x15m 3x1h 2x2h 4h 12h 6x1d 7x1w 11x4w 1000x1y"
It means we can rollback easily in the recent time: right now, yesterday, last week, four months ago, two years ago.
I like that idea. It notes a risk of load created by snapshot pruning.
Note: ZFS scrub
A scrub operation has been tested after jail creation with zpool scrub arcology to help to prepare future maintenance operation, the speed is 20 M/s, so 50 seconds per Go seem to be needed.