Which image/tag is this hash ? about docker-guacamole

[abesnier]

If you pulled it on the 25th of May, that would be Guacamole 1.5.1, with Tomcat 9.0.75, S6 Overlay 3.1.5.0, and PostgreSQL JDBC 42.6.0.

If you did not specify a particular tag, you would have pulled the latest tag, which comes with a PostgreSQL 13 backend.

Unfortunately, I do not keep track of all the hashes of the images I build.

But you can run docker image inspect abesnier/guacamole. That will provide you with a lot of details on the image, especially the environment variables. those will contain all the versions numbers of the image components. Example of the current abesnier/guacamole:latest image:

            "Env": [
                "PATH=/usr/lib/postgresql/13/bin:/usr/local/tomcat/bin:/opt/java/openjdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "JAVA_HOME=/opt/java/openjdk",
                "LANG=en_US.UTF-8",
                "LANGUAGE=en_US:en",
                "LC_ALL=en_US.UTF-8",
                "JAVA_VERSION=jdk-11.0.19+7",
                "CATALINA_HOME=/usr/local/tomcat",
                "TOMCAT_NATIVE_LIBDIR=/usr/local/tomcat/native-jni-lib",
                "LD_LIBRARY_PATH=/usr/local/tomcat/native-jni-lib",
                "GPG_KEYS=48F8E69F6390C9F25CFEDCD268248959359E722B A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243",
                "TOMCAT_MAJOR=9",
                "TOMCAT_VERSION=9.0.76", 
                "TOMCAT_SHA512=028163cbe15367f0ab60e086b0ebc8d774e62d126d82ae9152f863d4680e280b11c9503e3b51ee7089ca9bea1bfa5b535b244a727a3021e5fa72dd7e9569af9a",
                "GUACAMOLE_HOME=/config/guacamole",
                "PGDATA=/config/postgres",
                "POSTGRES_USER=guacamole",
                "POSTGRES_DB=guacamole_db",
                "S6OVERLAY_VER=3.1.5.0",
                "POSTGREJDBC_VER=42.6.0",
                "GUAC_DOWN_PATH=https://dlcdn.apache.org/guacamole",
                "GUAC_VER=1.5.2",
                "GUAC_VER_PATH=1.5.2",
                "PG_MAJOR=13",
                "GUACD_LOG_LEVEL=info",
                "S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0"

I still have question on what you want to do. Versions bumps of Guacamole, Tomcat, S6 overlay and PostgreSQL JDBC can be done in place (i.e. as long as you use the same image tag, update will be transparent for you).

The only time you need to pay very particular attention for an upgrade is when you want to move from PostgreSQL 13 (the default one) to PostgreSQL 14 or 15 (images tags ending with -pg14 or -pg15). In that case, make sure you backup your data, and follow the instructions here.

[Zixim]

Thanks for the elaborate info.

"I still have question on what you want to do. Versions bumps of Guacamole, Tomcat, S6 overlay and PostgreSQL JDBC can be done in place (i.e. as long as you use the same image tag, update will be transparent for you)."
Well, yesterday I stopped the container, deleted the image, and restarted the container - causing latest to be pulled. The container failed to start properly. I then wanted to pull the previous version, and realised that I had no clue of what version was working for me. Restored the docker host from backup, and Guacamole is now back, on the "old" version.

So, now I'm just looking for all info on how to upgrade, without risking troubles.

If I understand you correctly, latest should still be PostgreSQL 13, so that wasn't the reason for my botched upgrade.
Will try again, and will start another issue with log messages in case it goes bad once more.

[Zixim]

resolved in #19