More and better variables, and general clean-up

Dockerfile

@@ -8,6 +8,7 @@ RUN printf "deb http://packages.icinga.com/ubuntu icinga-bionic main\ndeb-src ht
     chown -R nagios:nagios /var/lib/icinga2/certs
 
 COPY create-satellite.sh /create-satellite.sh
-RUN chmod +x /create-satellite.sh
+COPY run-icinga.sh /run-icinga.sh
+RUN chmod +x /create-satellite.sh ; chmod +x /run-icinga.sh
 
-CMD /create-satellite.sh ; /usr/sbin/icinga2 daemon
+ENTRYPOINT ["/run-icinga.sh"]

README.md

@@ -0,0 +1,55 @@
+# icinga-satellite
+An easy-to-use Dockerized Icinga2 satellite setup. It could be used as an
+Icinga2 agent aswell, but I don't think that would make much sense. The goal
+is instead to create an easy-to-deploy satellite Docker.
+
+## Environment variables
+Everything is controlled using the follwing environment variables.
+
+* **CN** is the Common Name of the satellite
+* **ZONE** is the Zone name in which the satellite is. If no zone is specified
+  it defaults to using the **CN** as the zone.
+* **PARENTCN** is the Common Name of the parent host, for example the master. If
+  no **PARENTCN** is specified it defaults to using the **PARENTHOST** as a
+  **PARENTCN**
+* **PARENTHOST** is the FQDN or IP of the parent host, for example the master.
+* **PARENTPORT** is the Icinga2 port on the parent host. Defaults to 5665.
+* **TICKET** is the ticket you get from the master (if you are using Director
+  you find it under the Agent tab of the host).
+* **ACCEPT_CONFIG** takes a *y* or *n* value for yes or no. The default is
+  *n*(o).
+* **ACCEPT_COMMANDS** takes a *y* or *n* value for yes or no. The default is
+  *n*(o).
+* **DISABLE_CONFD** takes a *y* or *n* value for yes or no. The default is
+  *y*(es). This should be a sane default for most people.
+
+## Example usage
+```
+#> docker run -d --name my-icinga-sat \
+  -e CN=icinga-sat02.local \
+  -e PARENTHOST=icinga-master.local \
+  -e PARENTCN=icinga-master.local \
+  -e PARENTZONE=master \
+  -e TICKET=124de0573705d1133db62a974aaf \
+  -e DISABLE_CONFD=y -e ACCEPT_CONFIG=y -e ACCEPT_COMMANDS=y \ 
+   jackbenny/icinga-satellite
+```
+
+## docker-compose.yml example
+```
+version: "3.8"
+services:
+  my-icinga-sat:
+    image: jackbenny/icinga-satellite
+    environment:
+      - CN=icinga-sat02.local
+      - ZONE=icinga-sat02.local
+      - PARENTHOST=icinga-master.local
+      - PARENTCN=icinga-master.local
+      - PARENTZONE=master
+      - TICKET=124de0573705d1133db62a974aaf
+      - ACCEPT_CONFIG=y
+      - ACCEPT_COMMANDS=y
+      - DISABLE_CONFD=y
+```
+

create-satellite.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-# If parent cn is not specified, default it to the parent host.
-# If the zone if not specified, default it to the cn of the satellite/agent.
+# If parent CN is not specified, default it to the parent host.
+# If the zone if not specified, default it to the CN of the satellite/agent.
 # Use the default port if none is specified.
 
 if [ -z "$PARENTCN" ]; then
@@ -16,6 +16,26 @@ if [ -z "$PARENTPORT" ]; then
     PARENTPORT=5665
 fi
 
+# Set accept config and accept commands (defaults to no)
+if [ "$ACCEPT_CONFIG" == "y" ]; then
+    ACCEPT_CONF="--accept-config"
+else
+    ACCEPT_CONF=" "
+fi
+
+if [ "$ACCEPT_COMMANDS" == "y" ]; then
+    ACCEPT_COMM="--accept-commands"
+else
+    ACCEPT_COMM=" "
+fi
+
+# Defaults to disable conf.d (so to "n" or anything else to enable inclusion of
+# conf.d directory
+if [ -z "$DISABLE_CONFD" ] || [ "$DISABLE_CONFD" == "y" ]; then
+    DISABLE_CONF="--disable-confd"
+else
+    DISABLE_CONF=" "
+fi
 
 icinga2 pki new-cert --cn "$CN" \
 --key /var/lib/icinga2/certs/"${CN}".key \
@@ -33,5 +53,6 @@ icinga2 node setup --ticket "$TICKET" \
 --parent_zone "$PARENTZONE" \
 --parent_host "$PARENTHOST" \
 --trustedcert /var/lib/icinga2/certs/"${PARENTCN}".crt \
---accept-commands --accept-config \
---disable-confd
+$ACCEPT_CONF \
+$ACCEPT_COMM \
+$DISABLE_CONF

docker-compose.yml

@@ -1,14 +0,0 @@
-version: "3.8"
-services:
-
-  icinga:
-    build:
-      context: ./image-files
-      dockerfile: Dockerfile
-    environment:
-      - CN=
-      - ZONE=
-      - PARENTHOST=
-      - PARENTCN=
-      - PARENTZONE=
-      - TICKET=

run-icinga.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+/create-satellite.sh
+/usr/sbin/icinga2 daemon