I can’t seem to reach other containers by hostname, only by (varying) IP address. NixOS 22.11.
Try assigning containers to a pod.
Excellent suggestion thank you. I’ve just tried using it like a replacement for docker via virtualisation.oci-containers.containers.
How would one assign a pod via that?
Did you set virtualisation.podman.defaultNetwork.dnsname.enable and adjust your firewall accordingly?
I added the following rules (might not be what you want exactly):
networking.firewall.interfaces."podman+" = {
allowedUDPPorts = [ 53 ];
allowedTCPPorts = [ 53 ];
};
Example setup for nextcloud/redis/mariadb: (assigning a pod falls under extraOptions)
systemd.services.pod-cloud = {
description = "Start podman 'nextcloud' pod";
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
requiredBy = [ "podman-mariadb.service" "podman-nextcloud.service" "podman-redis.service" ];
unitConfig = {
RequiresMountsFor = "/run/containers";
};
serviceConfig = {
Type = "oneshot";
ExecStart = "-${pkgs.podman}/bin/podman pod create cloud";
};
path = [ pkgs.zfs pkgs.podman ];
};
virtualisation.podman = {
enable = true;
extraPackages = [ pkgs.zfs ];
};
virtualisation.containers.storage.settings = {
storage = {
driver = "zfs";
graphroot = "/var/lib/containers/storage";
runroot = "/run/containers/storage";
};
};
nextcloud = {
image = "nextcloud:local";
autoStart = true;
user = "1000:100";
dependsOn = [ "mariadb" "redis" ];
environment = {
MYSQL_HOST = "127.0.0.1";
REDIS_HOST = "127.0.0.1";
TRUSTED_PROXIES = "10.88.0.1/24";
NEXTCLOUD_TRUSTED_DOMAINS = "my.domain";
MAIL_DOMAIN = "my.domain";
OVERWRITEHOST = "my.domain";
OVERWRITEPROTOCOL = "https";
OVERWRITECLIURL = "my.domain";
PHP_MEMORY_LIMIT = "2G";
PHP_UPLOAD_LIMIT = "2G";
};
extraOptions = [
"--device=/dev/dri"
"--init=true"
"--pod=cloud"
"--label=traefik.enable=true"
"--label=traefik.http.routers.nextcloud.rule=Host(`my.domain`)"
"--label=traefik.http.routers.nextcloud.entrypoints=websecure"
"--label=traefik.http.routers.nextcloud.tls.certResolver=le"
"--label=traefik.http.routers.nextcloud.middlewares=headers,nextcloud-redirectregex@file"
"--label=traefik.http.services.nextcloud.loadbalancer.server.port=80"
"--sysctl=net.ipv4.ip_unprivileged_port_start=80"
];
volumes = [ "nextcloud_config:/var/www/html" "/mnt/media:/data" ];
};
redis = {
image = "docker.io/library/redis:latest";
autoStart = true;
user = "1000:100";
cmd = [ "redis-server" "--save" "59" "1" "--loglevel" "warning" ];
extraOptions = [ "--pod=cloud" ];
volumes = [ "redis_data:/data" ];
};
mariadb = {
image = "docker.io/library/mariadb:latest";
autoStart = true;
user = "mysql:mysql";
cmd = [ "--transaction-isolation=READ-COMMITTED" "--log-bin=msqyld-bin" "--binlog-format=ROW" ];
extraOptions = [ "--pod=cloud" ];
volumes = [ "mariadb_data:/var/lib/mysql" ];
environment = {
MYSQL_DATABASE = "nextcloud";
MYSQL_USER = "nextcloud";
MYSQL_PASSWORD = "password";
MYSQL_ROOT_PASSWORD = "rootpassword";
};
};
};