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mattermost: switch to postgresql

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this depends on a whole lot of imperative nonsense being done at the
same time, which i have done.

of special interest to anyone attempting to understand this is
 https://docs.mattermost.com/deploy/postgres-migration.html
for the general shape of incompetence at work,
 https://docs.mattermost.com/install/setting-up-socket-based-mattermost-database.html#with-unix-socket
for yet another interesting syntax for database connection strings, and
 https://github.com/dimitri/pgloader/issues/782#issuecomment-502323324
for a truly astonishing take on how to do database migrations, which
unfortunately i have followed.

As far as I can tell, everything has kept working. Downtime was mostly
spent understanding connection string syntax and their horribly buggy
parsers.

Note for people with server access:
 - i have kept the temporary files (including logs) around in
   /persist/migration inside the container should we ever need them
   again
 - there's a zfs snapshot @pre-postgres with the old state
This commit is contained in:
stuebinm 2024-05-19 23:26:53 +02:00
parent ed667e15e9
commit 285a8e6a8e
2 changed files with 21 additions and 9 deletions
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24
parsons/mattermost.nix
View file

@ -164,7 +164,8 @@
MetricsSettings.Enable = false;
GuestAccountsSettings.Enable = false;
FeatureFlags.CollapsedThreads = true;
SqlSettings.DriverName = "mysql";
SqlSettings.DriverName = "postgres";
SqlSettings.DataSource = "postgres:///mattermost?host=/run/postgresql";
};
# turn of the weirder parts of this module (which insist on passwords
@ -175,15 +176,26 @@
localDatabaseCreate = false;
};
services.mysql = {
enable = true;
services.postgresql = {
enable = lib.mkForce true; # mattermost sets this to false. wtf.
package = pkgs.postgresql_15;
ensureDatabases = [ "mattermost" ];
ensureUsers = [ {
name = "mattermost";
ensurePermissions = { "mattermost.*" = "ALL PRIVILEGES"; };
ensureDBOwnership = true;
} ];
package = pkgs.mysql80;
dataDir = "/persist/mysql";
authentication = lib.mkForce ''
# Generated file; do not edit!
local all all trust
'';
};
services.postgresqlBackup = {
enable = true;
databases = [ "mattermost" ];
startAt = "*-*-* 23:45:00";
location = "/persist/backups/postgres";
};
};
};

6
secrets.yaml
View file

@ -1,7 +1,7 @@
hedgedoc-hacc:
env: ENC[AES256_GCM,data:e2vSolxJNucya9QNs28gAVDBJQq5AJh7jS1nBh0UTkDnhNL8NPW1KTxcun4rM99EhiNZsz6Z9qHRMejmP4frQw==,iv:DqAGhGWYf/EpGnI79MxKmBlHMhK26zx50vXb1TbvESw=,tag:Xix499XAcAmxhNuGr2ApcA==,type:str]
mattermost:
env: ENC[AES256_GCM,data:L9GBhCvdHUKlDQ1J3uvEqVziv9yCCISycexyTo/U0Hx8vPVk3TAEOk8zP23XAUsHNEE2L0ibzHBTVAMiXMmFkiuyxlmLqfRemZ3cm4eXMPP8Wks+5d9yFKLYAaQgjpFUEOX5k+FHvN3+ADs/zTBT7LRWIKtga4yr14VfXAzmde2TFZM30Fdoj24EBdgaCjuh4FC9GMmivT/PtCX5s87c3O48EM993llhINVtnYxCLItunBCax/PQX2duVrvYg8FA6ldH6rUOy1fPtWVR8Vs9loSsTnK2AkrRKOzqKxU+lkQENHIGrHWhcl2toPAgeE5on//9tMpZVwYwJrubvAa2luikVEdAnjSQh3Co4bVSECzQTqp6pkm4gzgwagn3rSdbR40=,iv:auCnnA6+35LTW7E/0AWWwjh6Jmq/Y57MjiBKI8aJb9U=,tag:/7fAqyG87CxekN/QVKrLsg==,type:str]
env: ENC[AES256_GCM,data:ftWpGl6+sUMzJJKgfcPLvbFGGn16AKUPzPn8X6DNVMLrxZIkQ23Tk3ekKLKFpQEUtQfFjVlrTfFZezWKs4nVNLg2LmQqJNGMCCax5PRwAgoAsJ7pa9ewNmHT+EIXtZEjQgVfN5786Yno5n/6JJ1lz6EiGmdn7/0rF5TLGjzig17azazS1+lkIYY=,iv:SZvGGKpVRI/odHbmgY8M6t6zCk8RgM+7EQEgRiizglA=,tag:cInsVo/QD85m+LxldyRlnA==,type:str]
tracktrain:
env: ENC[AES256_GCM,data:W3+8qWomPgGJt5u50aAm9x/dilMpqKY11I2AdaIBTz5posc25ts0LB5S/Sxe1ROz4itpDK3QvjoFUTRhS39k4dwMr5lqXV8Ln4B+sPpvh7oBM8A5zydP8Jj1J1YqRt8++RTUmb4z41DIwb/yaZKMu6z0guXIu1yuYzcbCuk0xe/iOp6UUpfjOzzWTvxY54zY6kWcjHLiCSwD31Cd+MxMPfbUEkHt+0W+sBmYXGeEFI/6ULSB6FnGjNW6F9g=,iv:3ymah8HG+Yg6VYZZA/MRRjHDYvYJz01ezvhfQiftegg=,tag:trht+PRYfKgWJkg2wRwISQ==,type:str]
vaultwarden:
@ -100,8 +100,8 @@ sops:
bndBTXJhQVE2OVlKeGNTbzJlL0duUzAKIWdesesYvBIN/m36fhzxq30+IT8qp/pF
S6i7QqZF75y2BpEoupRCqNIAsHrouUE+U9ZQJZO8m9J591mWvbVJIw==
-----END AGE ENCRYPTED FILE-----
lastmodified: "2024-05-08T12:29:13Z"
mac: ENC[AES256_GCM,data:Gt1UQy531A9YguKSWzgq2+EKATY2yqE7lCtG9+BYCCB2idMq6bNbKoLn5+kUTv/4y4P/4mgeTdMqdUDrF3nUTqpyyiE0U1I/B9z05iN1Xo5rnEOswX2TvT+br838vw4ueIk/4EmXlRyYRYJi/kTRtBcnYfDjbIYVE0JVkHutjmc=,iv:xsZAJlZCvGWoov1DRx4obt+OQeDMnU+OqCI3/1mzz5c=,tag:+MALy05C1hEUeODC0VcUEg==,type:str]
lastmodified: "2024-05-19T21:17:46Z"
mac: ENC[AES256_GCM,data:rzxX2fl+EQbhQUcmr6lKoYcUpAb1G3IKjsJJjCrMKN5t4oevI85GtTU3Q+pLrIFLjfkgIV8yiNH4usg0ghtoahQUkrnlZxkOoCktfgM67hRcUniY8UUxY4HqFFK3KzXFqc8Q4vXrerQgJy87Xg+ret9wCQXBbM3AB+B1fsmLE9s=,iv:pm1FakBlOFibps6R5kXMUq+IEl074mEmRIQmdeDxPs4=,tag:hQsV0NZNgDGYjFOK7+SKqg==,type:str]
pgp: []
unencrypted_suffix: _unencrypted
version: 3.8.1