Support for Running Deployer with Aribtrary UID

The deployer container is now able to run as an arbitrary UID in an
OpenShift environment.  This ensures that the deployer is able to
run properly using the 'restricted' SCC.

Author: andrewlecuyer

bin/uid_daemon.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+# Copyright 2020 Crunchy Data Solutions, Inc.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if ! whoami &> /dev/null
+then
+    if [[ -w /etc/passwd ]]
+    then
+        sed  "/daemon:x:2:/d" /etc/passwd >> /tmp/uid.tmp
+        cp /tmp/uid.tmp /etc/passwd
+        rm -f /tmp/uid.tmp
+        echo "${USER_NAME:-daemon}:x:$(id -u):0:${USER_NAME:-daemon} user:${HOME}:/bin/bash" >> /etc/passwd
+    fi
+fi
+exec "$@"

centos7/Dockerfile.pgo-deployer.centos7

@@ -16,8 +16,16 @@ RUN yum -y install epel-release \
     which \
     gettext
 
-USER daemon
-
 COPY installers/ansible /ansible
 COPY installers/image/bin/pgo-deploy.sh /pgo-deploy.sh
 COPY installers/image/inventory_template /inventory_template
+COPY bin/uid_daemon.sh /uid_daemon.sh
+
+RUN chmod g=u /etc/passwd
+RUN chmod g=u /uid_daemon.sh
+
+ENTRYPOINT ["/uid_daemon.sh"]
+
+USER daemon
+
+CMD ["/pgo-deploy.sh"]

installers/kubectl/postgres-operator.yml

@@ -134,7 +134,6 @@ spec:
             restartPolicy: Never
             containers:
             - name: pgo-deploy
-              command: ["/pgo-deploy.sh"]
               image: registry.developers.crunchydata.com/crunchydata/pgo-deployer:centos7-4.3.1
               imagePullPolicy: IfNotPresent
               env:

rhel7/Dockerfile.pgo-deployer.rhel7

@@ -16,8 +16,16 @@ RUN yum install -y https://download.fedoraproject.org/pub/epel/epel-release-late
     which \
     gettext
 
-USER daemon
-
 COPY installers/ansible /ansible
 COPY installers/image/bin/pgo-deploy.sh /pgo-deploy.sh
 COPY installers/image/inventory_template /inventory_template
+COPY bin/uid_daemon.sh /uid_daemon.sh
+
+RUN chmod g=u /etc/passwd
+RUN chmod g=u /uid_daemon.sh
+
+ENTRYPOINT ["/uid_daemon.sh"]
+
+USER daemon
+
+CMD ["/pgo-deploy.sh"]