Using --shm-size Docker option to mount shm.

Author: bofm

Makefile

@@ -1,14 +1,15 @@
 REPO = bofm/oracle12c
 NAME = oracle
 CURDIR = `pwd`
-OPTS =
+SHM_SIZE = 1GB
+OPTS = --shm-size $(SHM_SIZE)
 DOCKER_SAVE_FILENAME = docker_img_oracle_database_created_$$(date +%Y-%m-%d).tgz
 ccred=\033[0;31m
 ccgreen=\033[32m
 ccyellow=\033[0;33m
 ccend=\033[0m
 
-.PHONY: all clean
+.PHONY: all
 
 # Use bofm/oracle12c:preinstall from Docker Hub
 all: install postinstall
@@ -47,24 +48,24 @@ postinstall:
 install:
 	@echo "$(ccgreen)Installing Oracle Database software...$(ccend)"
 	@if docker ps -a|grep $(NAME)_install; then docker rm $(NAME)_install; fi
-	@docker run --privileged --name $(NAME)_install -v $(CURDIR)/../database:/tmp/install/database $(REPO):preinstall /tmp/install/install.sh
+	@docker run $(OPTS) --name $(NAME)_install -v $(CURDIR)/../database:/tmp/install/database $(REPO):preinstall /tmp/install/install.sh
 	@echo "$(ccgreen)Committing image with tag 'installed'...$(ccend)"
 	@docker commit $(NAME)_install $(REPO):installed
 	@docker rm $(NAME)_install
 
 run:
-	@docker run --rm $(OPTS) --name $(NAME) -i -t $(REPO) bash
+	@docker run -it --rm $(OPTS) --name $(NAME) $(REPO) bash
 
-run-priv:
-	docker run -it --rm -v /data --privileged $(OPTS) --name $(NAME) $(REPO) bash --shm
+run-v:
+	docker run -it --rm -v /data $(OPTS) --name $(NAME) $(REPO) bash
 
 test:
-	docker run -it -v /data --privileged $(OPTS) --name oracle_db_test $(REPO) database --shm
+	docker run -it -v /data $(OPTS) --name oracle_db_test $(REPO) database
 	docker start -ia oracle_db_test
 	docker rm -v oracle_db_test
 
 test2:
-	docker run -it -v /data --privileged $(OPTS) --name oracle_db_test  $(REPO) database
+	docker run -it -v /data $(OPTS) --name oracle_db_test  $(REPO) database
 	docker rm -v oracle_db_test
 
 test3:
@@ -73,7 +74,7 @@ test3:
 
 docker-save:
 	@echo "$(ccgreen)Running new container and creating database...$(ccend)"
-	docker run -d --privileged $(OPTS) --name oracle_db_test $(REPO) database --shm
+	docker run -d $(OPTS) --name oracle_db_test $(REPO) database
 	docker logs -f oracle_db_test &
 	@while true; do \
 		docker logs oracle_db_test 2>/dev/null | grep "Database created." && break || sleep 20; \

README.md

@@ -7,7 +7,7 @@
 * `docker logs` shows all the logs prefixed with log source (in the style of syslog).
 * Uses `trap` to handle signals and shutdown gracefully.
 * Data and logs go to `/data`, so that `-v /data` could be used.
-* Mounts 50% of total memory to `/dev/shm` as shared memory. Oracle instance uses 40% of total memory. Can be changed in [entrypoint.sh](step2/entrypoint.sh) and [create_database.sh](step2/create_database.sh).
+* Oracle instance uses 40% of total memory. Can be changed in [create_database.sh](step2/create_database.sh).
 * rlwrap can be installed by running `bash /tmp/install/install_rlwrap.sh` (+ 50 MB on disk).
 
 
@@ -30,7 +30,7 @@ make all
 
     ```bash
     # Create and start
-    docker run -d --privileged --name oracle_database -p 1521:1521 -v /data bofm/oracle12c
+    docker run -d --shm-size 1GB --name oracle_database -p 1521:1521 -v /data bofm/oracle12c
     # Stop
     docker stop -t 120 oracle_database
     # Start again
@@ -41,7 +41,7 @@ make all
 
     ```bash
     # Start
-    docker run -it --privileged --name oracle_database -p 1521:1521 -v /data bofm/oracle12c
+    docker run -it --shm-size 1GB --name oracle_database -p 1521:1521 -v /data bofm/oracle12c
     # `ctrl+c` (SIGINT) to stop
     ```
 
@@ -61,9 +61,9 @@ make all
 
   # Run the image in the new container
   # Daemon
-  docker run -d --privileged --name oracle_database -p 1521:1521 bofm/oracle12c:created
+  docker run -d --shm-size 1GB --name oracle_database -p 1521:1521 bofm/oracle12c:created
   # Foreground
-  docker run -it --privileged --name oracle_database -p 1521:1521 bofm/oracle12c:created
+  docker run -it --shm-size 1GB --name oracle_database -p 1521:1521 bofm/oracle12c:created
   ```
 
 * Logs
@@ -108,15 +108,14 @@ make all
   ```
 
 ### Limitations and Bugs
-* `--privileged` option is required to mount /dev/shm to use Oracle's automatic memory management.
+* `--shm-size` option is required to mount /dev/shm to use Oracle's automatic memory management.
 * Database options and sample schemas installation through DBCA is a mystery. In this repo dbca is run with `-sampleSchema true` and [db_template.dbt](step2/db_template.dbt) contains this line `<option name="SAMPLE_SCHEMA" value="true"/>`, but nothing happens, the database is always created without sample schemas. Well, that's Oracle Database after 30+ years of development.
 
 ### License
 * This repo - [MIT License](LICENSE).
 * Oracle Database software - see [Database Licensing Information](http://docs.oracle.com/database/121/DBLIC/toc.htm).
 
 ### TODO
-* Remove `--privileged` and use `--shm-size` instead
 * use spfile
 * EM DBconsole
 * Archivelog mode option?

step2/Dockerfile

@@ -4,11 +4,11 @@ MAINTAINER bofm
 RUN mkdir /data && chmod 777 /data
 COPY db_template.dbt /tmp/
 COPY colorecho /bin/
-COPY entrypoint.sh /bin/
 COPY entrypoint_oracle.sh /bin/
 COPY create_database.sh ora_env /tmp/
-RUN chmod +x /bin/entrypoint.sh /bin/entrypoint_oracle.sh /tmp/create_database.sh /tmp/ora_env /bin/colorecho
+RUN chmod +x /bin/entrypoint_oracle.sh /tmp/create_database.sh /tmp/ora_env /bin/colorecho
 ENV PATH=$PATH:/usr/bin:/usr/local/bin
 EXPOSE 1521
-ENTRYPOINT ["entrypoint.sh"]
-CMD ["database", "--shm"]
+USER oracle
+ENTRYPOINT ["entrypoint_oracle.sh"]
+CMD ["database"]