[Bug 1904580] Re: Permissions 0644 for '/var/lib/nova/.ssh/id_rsa' are too open

[Nobuto Murata]

root at casual-condor:/var/lib/nova# ll .ssh/
total 28
drwxr-xr-x  2 nova root 4096 Aug  3 10:43 ./
drwxr-xr-x 10 nova nova 4096 Aug  3 10:25 ../
-rw-r--r--  1 root root 1197 Aug  3 10:54 authorized_keys
-rw-------  1 nova root 1823 Aug  3 10:25 id_rsa
-rw-r--r--  1 nova root  400 Aug  3 10:25 id_rsa.pub
-rw-r--r--  1 root root 5526 Aug  3 10:54 known_hosts

^^^ 600 to id_rsa

root at casual-condor:/var/lib/nova# find /var/lib/nova -type f -exec chmod
0644 "{}" + -o -type d -exec chmod 0755 "{}" +

root at casual-condor:/var/lib/nova# ll .ssh/
total 28
drwxr-xr-x  2 nova root 4096 Aug  3 10:43 ./
drwxr-xr-x 10 nova nova 4096 Aug  3 10:25 ../
-rw-r--r--  1 root root 1197 Aug  3 10:54 authorized_keys
-rw-r--r--  1 nova root 1823 Aug  3 10:25 id_rsa
-rw-r--r--  1 nova root  400 Aug  3 10:25 id_rsa.pub
-rw-r--r--  1 root root 5526 Aug  3 10:54 known_hosts

^^^ 644 to id_rsa

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https://bugs.launchpad.net/bugs/1904580

Title:
  Permissions 0644 for '/var/lib/nova/.ssh/id_rsa' are too open

Status in OpenStack nova-compute charm:
  New
Status in nova package in Ubuntu:
  New

Bug description:
  Charm revision: 320
  Cloud: bionic-ussuri

  Permissions 0644 for '/var/lib/nova/.ssh/id_rsa' are too open.
  Load key "/var/lib/nova/.ssh/id_rsa": bad permissions
  nova at 10.35.80.49: Permission denied (publickey).

  This was preventing nova resizing:

  /var/log/nova/nova-compute.log:2020-11-17 13:14:42.210 100221 ERROR
  oslo_messaging.rpc.server Command: ssh -o BatchMode=yes 10.35.80.49
  mkdir -p /var/lib/nova/instances/39caee98-b81c-4cef-9810-815f2ecf1fc4

  Manually setting to 0600 fixed the issue.

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