89 lines
3.2 KiB
Markdown
89 lines
3.2 KiB
Markdown
How to update Matrix?
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=====================
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## 1. Build the new containers
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It starts with this file: `app/build/docker-compose.yml`.
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Often, I update Riot Web and Synapse at the same time.
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In the file, find the `riot` and `synapse` entries.
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The only thing you need to do is to update the `VERSION` argument.
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This argument is then used to template the Dockerfile.
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The `VERSION` value should match a github release, the link to the corresponding release page is put as a comment next to the variable in the compose file.
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Next, we put tags on our images.
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You need to increment it, for example: `superboum/amd64_riotweb:v17` will become `superboum/amd64_riotweb:v18`.
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We use the docker hub to store our images, if you are not `superboum` you must change the name with your handle, eg. `john/amd64_riotweb:v18`.
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So, from now we expact you have:
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- changed the `VERSION` value and `image` name/tag of `riot`
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- changed the `VERSION` value and `image` name/tag of `synapse`
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You can now simply build and push the new images:
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```bash
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docker-compose build riot synapse
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```
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And then send them to the docker hub:
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```
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docker-compose push riot synapse
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```
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Don't forget to commit and push your changes before doing anything else!
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## 2. Deploy the new containers
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Now, we will edit the deployment file `app/deployment/im.hcl`.
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Find where the image is defined in the file, for example in Riot, it will look like that:
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```hcl
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group "riotweb" {
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count = 1
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task "server" {
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driver = "docker"
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config {
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image = "superboum/amd64_riotweb:v17"
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port_map {
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web_port = 8043
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}
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```
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And replace the `image =` entry with your image name.
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Do the same thing for `synapse`.
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Now, you need a way to access the cluster to deploy this file.
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To do this, you must bind nomad on your machine through a SSH tunnel.
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Check the end of `README.md` to do it.
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If you have access to the Nomad web UI when entering http://127.0.0.1:4646
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you are ready to go.
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You must have installed the Nomad command line tool on your machine (also explained in `README.md`).
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Now, on your machine, you must be able to run (from the `app/deployment` folder) :
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```
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nomad plan im.hcl
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```
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Check that the proposed diff corresponds to what you have in mind.
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If it seems OK, just copy paste the proposed `nomad run ...` command proposed as part of the output of the `nomad plan` command.
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From now, it will take around ~2 minutes to deploy the new images.
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You can follow the deployment from the Nomad UI.
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Bear in mind that, once the deployment is done on Nomad, you may still need to wait some minutes that Traefik refreshes its configuration.
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If everythings worked as intended, you can commit and push your deployment file.
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If something went wrong, you must rollback your deployment.
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1. First, find a working deployment with [nomad job history](https://www.nomadproject.io/docs/commands/job/history)
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2. Revert to this deployment with [nomad job revert](https://www.nomadproject.io/docs/commands/job/revert)
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Now, if the deployment failed, you should probably investigate what went wrong offline.
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In this case, I build a test stack with docker-compose in `app/integration` (for now, I had to do that only for plume and jitsi).
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