add documentation for removing a device from linux kernel safely

[mirror/dsa-wiki.git] / input / howto / decomission.mdwn

diff --git a/input/howto/decomission.mdwn b/input/howto/decomission.mdwn
index b89ef6e..da732e5 100644 (file)
--- a/input/howto/decomission.mdwn
+++ b/input/howto/decomission.mdwn
@@ -9,21 +9,17 @@
  * Revoke puppet certificate
 
    * on handel: puppet node clean $HOST
-   * also, clean up any entries in puppet's database (see /etc/puppet/puppet.conf for password):
-
-     mysql -p -u puppet puppet
-     select * from resources where title like '%XXXX.debian.org%';
-     followed by: delete from resources where title like '%XXXX.debian.org%';
-
    * reinit samhain on handel
 
  * Remove from LDAP
+   * including references such as subgroup: foo@hostname or supplementarygid: foo@hostname
    * rerun puppet on backuphost / the backup host
    * reinit samhain on backuphost
  * Remove from Nagios
  * Remove any references from puppet configuration
  * Remove references to the host from DNS files, including reverse DNS
  * Get rid of the HW (tell the hoster to get rid of it or other as appropriate)
+ * Update password file information for the $HOST
  * Remove MQ queues related to machine (see [[doc/mq]] for details)
 
     for queue in $(rabbitmqadmin -N rainier list queues name | \
@@ -32,6 +28,33 @@
     rabbitmqadmin -N rainier -V dsa delete queue name=$queue
     done
 
-Three months after decomissioning:
+ * Remove disks from the MSA 
+   * run multipath -ll on the KVM host and find all disks on that multipath
+
+```
+    finzi-srv (3600c0ff00027786c874edd5701000000) dm-52 HP,MSA 2040 SAN
+    size=75G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='0' wp=rw
+    |-+- policy='service-time 0' prio=50 status=active
+    | |- 1:0:2:4  sdeu 129:96  active ready running
+    | |- 1:0:3:4  sdhu 134:64  active ready running
+    | |- 2:0:0:4  sdaa 65:160  active ready running
+    | `- 2:0:2:4  sdfz 131:80  active ready running
+    `-+- policy='service-time 0' prio=10 status=enabled
+      |- 1:0:0:4  sdf  8:80    active ready running
+      |- 1:0:1:4  sdbu 68:128  active ready running
+      |- 2:0:1:4  sdcz 70:112  active ready running
+      `- 2:0:3:4  sdja 8:320   active ready running
+   
+```
+   * for each disk in those multipath run
+
+     echo 1 > /sys/block/sdX/device/delete
 
+   * once done, remove that multpath-device from multipath
+
+     multipath -f finzi-srv
+
+   * remove the paths in the MSA
+
+Three months after decomissioning:
  * Remove backups