School of Computer Science Wiki

You've loaded an old revision of the document! If you save it, you will create a new version with this data.

====== Run automated config tasks with Ansible ======

* **ssh** to ansible.socs and copy //.ssh/rsa_id.pub// to new vm //.ssh/authorized_keys// (append if exists already)
  * Add sysadmin account on new to local sudo group (via **visudo**, sudo must be installed)
  * Run **scripts/dhcp-free-addresses.py** to find a free 48.x ip (or 49.x if 48 exhausted). Student stuff can go directly on 49.x.
  * In **ldapvi** find the sOARecord for socs.uoguelph.ca and increment the first int in the line (this is picked up by an hourly cron on fluffy that will trigger bind dns to update).
    * Also do the same for ldap record 512 (49.x ip's) or 514 (48.x)
  * On the ansible server, add name/ip of new machine to provision group in **/etc/ansible/** hosts, run **$ ansible -m ping provision**
  * Run **ansible-playbook playbook/role.yml** (Make sure role.yml includes //ldap2//)

====== Kerberize host ======
 
  * run scripts/ldap-machine-create.py <machine name> <machine ip> "<text desc>"
  * on fluffy, run **/usr/local/sbin/updatezone.sh** this forces the Bind to update the zone records
  * BE CAREFUL NOW, THERE BE DRAGONS
    * Run **kadmin -l** then: > **get *<machine name>*** to confirm that a record exists for the new vm
    * If a similar machine exists, run get *server* to determine an appropriate principle for the service you plan to run (i.e. HTTP, postgres, mail,   etc)
    * Run the following, DO NOT FORGET TO INCLUDE **--keytab=/somepath** OTHERWISE fluffy's KEYTAB WILL BE OVERWRITTEN IE VERY BAD: 
      * **ext_keytab --keytab=/tmp/newvmname.keytab *newvmname***
  * **scp** keytab to new vm: ///etc/krb5.keytab// make sure ///etc/krb5.conf// is present

====== Final steps ======

* Restart autofs on new machine and confirm that ldap home dirs can be mounted. A system reboot may be required before dirs will mount.
  * Unless other groups need ssh access, append //simple_allow_groups = sysadmin// to ///etc/sssd/sssd.conf//
  * In ///etc/ssh/sshd_config// uncomment //GSSAPIAuthentication// and //GSSAPICleanupCredentials// and set both to 'yes'. If you want to make sure only a specific group can access ssh, append AllowGroups sysadmin to the file.

Edit summary

Note: By editing this page you agree to license your content under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International