/var/log/wtmp size increases in VMware Cloud Director Appliance

Products

• VMware Cloud Director

Issue/Introduction

The /var/log/wtmp file in the VMware Cloud Director Appliance is not being rotated automatically.

Environment

VMware Cloud Director 10.4.x

VMware Cloud Director 10.5.x

VMware Cloud Director 10.6.x

Cause

Starting from logrotate 3.14.x, the log rotation configuration for /var/log/wtmp and /var/log/btmp was moved from /etc/logrotate.conf to individual files under the /etc/logrotate.d/ directory.
In th Photon OS packages used by the appliance, the default configuration files /etc/logrotate.d/wtmp and /etc/logrotate.d/btmp are missing.

Resolution

To resolve this issue, manually create the missing logrotate configuration files.

1. SSH to the VMware Cloud Director cell as root.
2. Execute the following command to create the /etc/logrotate.d/wtmp configuration file:
   
   
   

   tee /etc/logrotate.d/wtmp <<'EOF'
   # no packages own wtmp -- we'll rotate it here
   /var/log/wtmp {
       missingok
       monthly
       create 0664 root utmp
       minsize 1M
       rotate 1
   }
   EOF

   
   
   
3. Execute the following command to create the /etc/logrotate.d/btmp configuration file:
   
   
   

   tee /etc/logrotate.d/btmp <<'EOF'
   # no packages own btmp -- we'll rotate it here
   /var/log/btmp {
       missingok
       monthly
       create 0600 root utmp
       rotate 1
   }
   EOF

   
   
   
4. Set the correct permissions for the new files:
   
   
   

   chmod 644 /etc/logrotate.d/wtmp
   chmod 644 /etc/logrotate.d/btmp