forked from 0k/0k-charms
Valentin Lab
1 year ago
1 changed files with 120 additions and 0 deletions
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120mongo/README.org
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#+TITLE: Mongo Charm |
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* Quick information |
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** Upgrade |
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Since 4.0.6 based on alpine 3.9, alpine is not packaging mongo |
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anymore. So we use the official version (that is huge). We still |
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must change entrypoint to enforce proper directory paths. |
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A ``Dockerfile`` is provided for this mean. |
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You can fetch latest official tags: |
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#+begin_quote |
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docker-tags-fetch mongo -l 10 -f '^[0-9]+\.[0-9]+\.[0-9]+$' |
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#+end_quote |
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change it in docker file, then |
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#+begin_quote |
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docker build . -t docker.0k.io/mongo:"$TAG"-myc |
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#+end_quote |
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** General Access |
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You can access mondo db, if running, through |
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#+begin_src sh |
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SERVICENAME=mongo |
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compose exec "$SERVICENAME" /usr/bin/mongo --quiet --eval "some js code" |
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#+end_src |
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if not running, you might want to run it. |
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The following could be added to actions |
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*** list databases |
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#+begin_src sh |
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SERVICENAME=mongo |
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compose exec -T mongo /usr/bin/mongo --quiet \ |
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--eval "JSON.stringify(db.adminCommand({listDatabases: 1}))" | \ |
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jq -r '.databases[] | .name' |
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#+end_src |
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*** Dump database |
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This one will use the probably already builded image from your project on your |
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host to run a competing mongo with a host directory to store the dump. |
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#+begin_src sh |
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PROJECTNAME=myc |
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SERVICENAME=mongo |
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docker run --rm --name mongo_client -ti \ |
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-v /tmp/mongo:/tmp/mongo --network "${PROJECTNAME}_default" \ |
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-u root \ |
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--entrypoint /bin/sh "${PROJECTNAME}_$SERVICENAME" |
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#+end_src |
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Then inside docker: |
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#+begin_src sh |
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apk add mongodb-tools |
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#+end_src |
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Then for each databases: |
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#+begin_src sh |
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DBNAME="xxx" |
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cd /tmp/mongo |
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mongodump -h mongo -d "$DBNAME" -o mdump/ |
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#+end_src |
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*** Drop database |
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#+begin_src sh |
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DBNAME=xxx |
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PROJECTNAME=myc |
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SERVICENAME=mongo |
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docker exec -i "${PROJECTNAME}_${SERVICE}_1" /usr/bin/mongo --quiet < \ |
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<(echo " |
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use $DBNAME; |
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db.dropDatabase(); |
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") |
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#+end_src |
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Note: if some connection are active to the database, it might not be |
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deleted, you should check by relisting the database. |
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*** Restore database |
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#+begin_src sh |
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SOURCE_DIR=/tmp/gogocarto |
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docker run --rm -ti \ |
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-v "$SOURCE_DIR":/tmp/backups/gogocarto \ |
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-w /tmp/backups \ |
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--entrypoint mongorestore \ |
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--network myc_default \ |
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myc_mongo \ |
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--host rs01/mongo /tmp/backups/ |
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#+end_src |
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There should not have any errors. |
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Please note that '/tmp/backups' in the last example should contain |
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one directory per database. |
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Note also that you should drop database (see previous section) prior |
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to restore them. |
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