Enabling SSH
Since it is a real pain to work in an rdp, or a graphical console on 25×80 characters, first thing we want to have is an ssh session to work with. From the convenient console of our liking, where we can paste and log. This took me some painful hours of guessing the commands from scripts and a lot of trial and error. Enjoy, Let’s get to it.
setcfg LOGIN "SSH Enable" TRUE /etc/init.d/login.sh start # if this is not enough, there is one config file that needs editing vi /etc/default_config/uLinux.conf # search for this section and change the FALSE to TRUE for sshd Enable [LOGIN] SSH Enable = TRUE SSH Port = 22 TELNET Enable = FALSE TELNET Port = 13131
What this does, is:
1, create the ssh separation user, group (guest) and it’s directories, which is by the way
[sshd]:x:110:65534:SSHD Privilege Separation:/var/empty:/bin/sh
2, it creates the rsa and dsa key pairs
[~] # ll /etc/config/ssh/ total 24K drwxr-xr-x 2 admin administrators 200 Jun 29 19:59 ./ drwxr-xr-x 21 admin administrators 2.5K Jun 29 20:00 ../ lrwxrwxrwx 1 admin administrators 16 Jun 29 19:59 id_rsa -> ssh_host_rsa_key lrwxrwxrwx 1 admin administrators 20 Jun 29 19:59 id_rsa.pub -> ssh_host_rsa_key.pub -rw------- 1 admin administrators 1.4K Jun 29 19:59 ssh_host_dsa_key -rw-r--r-- 1 admin administrators 605 Jun 29 19:59 ssh_host_dsa_key.pub -rw------- 1 admin administrators 2.6K Jun 29 19:59 ssh_host_rsa_key -rw-r--r-- 1 admin administrators 569 Jun 29 19:59 ssh_host_rsa_key.pub -rw-r--r-- 1 admin administrators 188 Jun 29 19:59 sshd_config -rw-r--r-- 1 admin administrators 17 Jun 29 19:59 sshd_user_config
Carefully assemble the mdRaid (Raid5 in my case)
A missing disk? We’ll look into that later. For the purpose of data extraction, 3 out of 4 is enough, if you are in a hurry.
[~] # mdadm --examine --scan
ARRAY /dev/md/256 metadata=1.0 UUID=8063634e:7a5599c9:99b40cd2:24878311 name=256
ARRAY /dev/md/322 metadata=1.0 UUID=520848dd:98eff90e:ed5a241f:3bbae5b7 name=322
ARRAY /dev/md/9 metadata=1.0 UUID=35cf0ce4:294f39d0:e02ad1da:e53f776a name=9
ARRAY /dev/md/256 metadata=1.0 UUID=d4ad498a:7da8fb33:6e9f5b0d:001b575b name=256
ARRAY /dev/md/1 metadata=1.0 UUID=2a5370b7:b7218673:3c062ecc:4df3f825 name=1
ARRAY /dev/md/13 metadata=1.0 UUID=76b64c56:edecd52e:9791d137:df3fe4ce name=13
ARRAY /dev/md/322 metadata=1.0 UUID=966bbcc7:ff9e8288:8e982269:8bdffd1f name=322
[~] # mdadm --examine --scan >> /etc/mdadm.conf
[~] # mdadm --detail /dev/md1
/dev/md1:
Version : 1.0
Creation Time : Mon Sep 7 12:04:35 2020
Raid Level : raid5
Array Size : 11691190272 (11149.59 GiB 11971.78 GB)
Used Dev Size : 3897063424 (3716.53 GiB 3990.59 GB)
Raid Devices : 4
Total Devices : 3
Persistence : Superblock is persistent
Update Time : Wed Jun 29 16:59:31 2022
State : clean, degraded
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : 1
UUID : 2a5370b7:b7218673:3c062ecc:4df3f825
Events : 57750
Number Major Minor RaidDevice State
0 0 0 0 removed
1 8 19 1 active sync /dev/sdb3
2 8 67 2 active sync /dev/sde3
3 8 35 3 active sync /dev/sdc3
Initialize LVM
[~] # /etc/init.d/init_lvm.sh help Changing old config name... mv: can't rename '/etc/config/ssdcache.conf': No such file or directory mv: can't rename '/etc/config/qlvm.conf': No such file or directory mv: can't rename '/etc/config/qdrbd.conf': No such file or directory Reinitialing... Detect disk(8, 80)... ignore non-root enclosure disk(8, 80). Detect disk(8, 48)... ignore non-root enclosure disk(8, 48). Detect disk(8, 16)... ignore non-root enclosure disk(8, 16). Detect disk(8, 64)... ignore non-root enclosure disk(8, 64). Detect disk(8, 32)... ignore non-root enclosure disk(8, 32). Detect disk(8, 0)... ignore non-root enclosure disk(8, 0). dev_count = 0 Detect disk(8, 80)... ignore non-root enclosure disk(8, 80). Detect disk(8, 48)... ignore non-root enclosure disk(8, 48). Detect disk(8, 16)... ignore non-root enclosure disk(8, 16). Detect disk(8, 64)... ignore non-root enclosure disk(8, 64). Detect disk(8, 32)... ignore non-root enclosure disk(8, 32). Detect disk(8, 0)... ignore non-root enclosure disk(8, 0). sys_startup_p2:got called count = -1 Done [~] # pvs PV VG Fmt Attr PSize PFree /dev/md1 vg1 lvm2 a-- 10.89t 0 [~] # vgs VG #PV #LV #SN Attr VSize VFree vg1 1 57 0 wz--n- 10.89t 0 [~] # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert lv1 vg1 Vwi---t--- 8.00t tp1 lv1312 vg1 -wi------- 1.11g lv2 vg1 Vwi---t--- 2.00t tp1 lv3 vg1 Vwi---t--- 2.00t tp1 lv4 vg1 Vwi---t--- 1.07t tp1 lv544 vg1 -wi------- 111.49g snap10001 vg1 Vwi---t--- 8.00t tp1 lv1 snap10002 vg1 Vwi---t--- 8.00t tp1 lv1 snap10003 vg1 Vwi---t--- 8.00t tp1 lv1 snap10004 vg1 Vwi---t--- 8.00t tp1 lv1 snap10005 vg1 Vwi---t--- 8.00t tp1 lv1 snap10006 vg1 Vwi---t--- 8.00t tp1 lv1 snap10007 vg1 Vwi---t--- 8.00t tp1 lv1 snap10008 vg1 Vwi---t--- 8.00t tp1 lv1 snap10009 vg1 Vwi---t--- 8.00t tp1 lv1 snap10010 vg1 Vwi---t--- 8.00t tp1 lv1 snap10011 vg1 Vwi---t--- 8.00t tp1 lv1 snap10012 vg1 Vwi---t--- 8.00t tp1 lv1 snap10013 vg1 Vwi---t--- 8.00t tp1 lv1 snap10014 vg1 Vwi---t--- 8.00t tp1 lv1 snap10015 vg1 Vwi---t--- 8.00t tp1 lv1 snap10016 vg1 Vwi---t--- 8.00t tp1 lv1 snap10017 vg1 Vwi---t--- 8.00t tp1 lv1 snap10018 vg1 Vwi---t--- 8.00t tp1 lv1 snap10019 vg1 Vwi---t--- 8.00t tp1 lv1 snap10020 vg1 Vwi---t--- 8.00t tp1 lv1 snap10021 vg1 Vwi---t--- 8.00t tp1 lv1 snap10022 vg1 Vwi---t--- 8.00t tp1 lv1 snap10023 vg1 Vwi---t--- 8.00t tp1 lv1 snap10024 vg1 Vwi---t--- 8.00t tp1 lv1 snap10025 vg1 Vwi---t--- 8.00t tp1 lv1 snap10026 vg1 Vwi---t--- 8.00t tp1 lv1 snap10027 vg1 Vwi---t--- 8.00t tp1 lv1 snap10028 vg1 Vwi---t--- 8.00t tp1 lv1 snap10029 vg1 Vwi---t--- 8.00t tp1 lv1 snap10030 vg1 Vwi---t--- 8.00t tp1 lv1 snap10031 vg1 Vwi---t--- 8.00t tp1 lv1 snap10032 vg1 Vwi---t--- 8.00t tp1 lv1 snap10033 vg1 Vwi---t--- 8.00t tp1 lv1 snap10034 vg1 Vwi---t--- 8.00t tp1 lv1 snap10035 vg1 Vwi---t--- 8.00t tp1 lv1 snap10036 vg1 Vwi---t--- 8.00t tp1 lv1 snap10037 vg1 Vwi---t--- 8.00t tp1 lv1 snap10038 vg1 Vwi---t--- 8.00t tp1 lv1 snap10039 vg1 Vwi---t--- 8.00t tp1 lv1 snap10040 vg1 Vwi---t--- 8.00t tp1 lv1 snap10041 vg1 Vwi---t--- 8.00t tp1 lv1 snap10042 vg1 Vwi---t--- 8.00t tp1 lv1 snap10043 vg1 Vwi---t--- 8.00t tp1 lv1 snap10044 vg1 Vwi---t--- 8.00t tp1 lv1 snap10045 vg1 Vwi---t--- 8.00t tp1 lv1 snap10046 vg1 Vwi---t--- 8.00t tp1 lv1 snap10047 vg1 Vwi---t--- 8.00t tp1 lv1 snap10048 vg1 Vwi---t--- 8.00t tp1 lv1 snap10049 vg1 Vwi---t--- 8.00t tp1 lv1 snap10050 vg1 Vwi---t--- 8.00t tp1 lv1 tp1 vg1 twi---t--- 10.71t
