Solaris 10 packages fail to install cleanly due to missing directories

User reports that Sensu packages do not install cleanly on Solaris 10 due to missing directories. See abbreviated output below:

Script started on Fri Sep 14 10:35:22 2018
# bash
examplehost# pkgadd -v -d sensu-1.4.2-3.i386.solaris.pkg sensu

Processing package instance <sensu> from </root/scripts/sensu-1.4.2-3.i386.solaris.pkg>

sensu(i386) 1.4.2-3
support@sensu.io
Using </opt> as the package base directory.
## Processing package information.
## Processing system information.
## Verifying disk space requirements.
## Checking for conflicts with packages already installed.
## Checking for setuid/setgid programs.

This package contains scripts which will be executed with super-user
permission during the process of installing this package.

Do you want to continue with the installation of <sensu> [y,n,?] y

Installing sensu as <sensu>

## Installing part 1 of 1.
<<<OUTPUT OMITTED>>>
[ verifying class <none> ]
## Executing postinstall script.
+ set -e 
+ basename /var/sadm/pkg/sensu/install/postinstall 
PROGNAME=postinstall
ETC_DIR=/etc
INSTALLER_DIR=/opt/sensu
EMBEDDED_DIR=/opt/sensu/embedded
EMBEDDED_BIN_DIR=/opt/sensu/embedded/bin
SHARE_DIR=/opt/sensu/embedded/share
LOG_DIR=/var/log/sensu
PID_DIR=/var/run/sensu
TMP_DIR=/var/cache/sensu
CONFIG_DIR=/etc/sensu
CONFD_DIR=/etc/sensu/conf.d
PLUGINS_DIR=/etc/sensu/plugins
EXTENSIONS_DIR=/etc/sensu/extensions
DEFAULTS_DIR=/etc/default
LOG_FILE=/var/log/sensu/sensu-client.log
CONFIG_FILE=/etc/sensu/config.json
LOG_LEVEL=info
OPTIONS=-c /etc/sensu/config.json -d /etc/sensu/conf.d -e /etc/sensu/extensions -l /var/log/sensu/sensu-client.log -L info
SENSU_PATHS=/opt/sensu/embedded/bin:/sbin:/usr/sbin:/usr/bin:/usr/sadm/install/bin:/etc/sensu/plugins:
SENSU_GEM_PATHS=/opt/sensu/embedded/lib/ruby/gems/2.2.0:
SYSV_SCRIPTS_EXIST=false
SENSU_USER=sensu
SENSU_GROUP=sensu
+ create_sensu_user_group 
+ set +e 
+ grep ^sensu: /etc/group 
RC=1
+ set -e 
+ [ 1 != 0 ] 
+ groupadd sensu 
+ set +e 
+ grep ^sensu: /etc/passwd 
RC=1
+ set -e 
+ [ 1 != 0 ] 
+ useradd -d /opt/sensu -g sensu sensu 
+ passwd -N sensu 
passwd: password information changed for sensu
+ chown_sensu_dirs 
+ set -e 
+ chown -Rh 0:0 /opt/sensu 
+ chown -R sensu:sensu /etc/sensu 
chown: /etc/sensu: No such file or directory
pkgadd: ERROR: postinstall script did not complete successfully

Installation of <sensu> failed.
examplehost# exit
# ^D
script done on Fri Sep 14 10:36:32 2018

script done on Fri Sep 14 10:36:32 2018

sensu / sensu-omnibus

Solaris 10 packages fail to install cleanly due to missing directories #278