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Mailu
[BUG] Connection to redis refused
Describe the bug mailu-admin is unable to connect to mailu-redis-master :
Traceback (most recent call last):
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 276, in connect
sock = self.retry.call_with_retry(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/retry.py", line 46, in call_with_retry
return do()
^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 277, in <lambda>
lambda: self._connect(), lambda error: self.disconnect(error)
^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 639, in _connect
raise err
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 627, in _connect
sock.connect(socket_address)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/app/venv/bin/flask", line 8, in <module>
sys.exit(main())
^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 1105, in main
cli.main()
File "/app/venv/lib/python3.12/site-packages/click/core.py", line 1078, in main
rv = self.invoke(ctx)
^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/click/core.py", line 1682, in invoke
cmd_name, cmd, args = self.resolve_command(ctx, args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/click/core.py", line 1729, in resolve_command
cmd = self.get_command(ctx, cmd_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 611, in get_command
app = info.load_app()
^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 335, in load_app
app = locate_app(import_name, name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 262, in locate_app
return find_best_app(module)
^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 72, in find_best_app
app = app_factory()
^^^^^^^^^^^^^
File "/app/mailu/__init__.py", line 117, in create_app
return create_app_from_config(config)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/__init__.py", line 48, in create_app_from_config
utils.session.init_app(app)
File "/app/mailu/utils.py", line 497, in init_app
MailuSessionExtension.cleanup_sessions(app)
File "/app/mailu/utils.py", line 436, in cleanup_sessions
for key in app.session_store.list():
^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/utils.py", line 162, in list
return list(self.redis.scan_iter(match=prefix))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/commands/core.py", line 3051, in scan_iter
cursor, data = self.scan(
^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/commands/core.py", line 3026, in scan
return self.execute_command("SCAN", *pieces, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/client.py", line 542, in execute_command
conn = self.connection or pool.get_connection(command_name, **options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 1109, in get_connection
connection.connect()
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 282, in connect
raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error 111 connecting to mailu-redis-master.mailu-mailserver.svc.cluster.local:6379. Connection refused.
Traceback (most recent call last):
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 276, in connect
sock = self.retry.call_with_retry(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/retry.py", line 46, in call_with_retry
return do()
^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 277, in <lambda>
lambda: self._connect(), lambda error: self.disconnect(error)
^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 639, in _connect
raise err
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 627, in _connect
sock.connect(socket_address)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/app/venv/bin/flask", line 8, in <module>
sys.exit(main())
^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 1105, in main
cli.main()
File "/app/venv/lib/python3.12/site-packages/click/core.py", line 1078, in main
rv = self.invoke(ctx)
^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/click/core.py", line 1682, in invoke
cmd_name, cmd, args = self.resolve_command(ctx, args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/click/core.py", line 1729, in resolve_command
cmd = self.get_command(ctx, cmd_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 611, in get_command
app = info.load_app()
^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 335, in load_app
app = locate_app(import_name, name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 262, in locate_app
return find_best_app(module)
^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/flask/cli.py", line 72, in find_best_app
app = app_factory()
^^^^^^^^^^^^^
File "/app/mailu/__init__.py", line 117, in create_app
return create_app_from_config(config)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/__init__.py", line 48, in create_app_from_config
utils.session.init_app(app)
File "/app/mailu/utils.py", line 497, in init_app
MailuSessionExtension.cleanup_sessions(app)
File "/app/mailu/utils.py", line 436, in cleanup_sessions
for key in app.session_store.list():
^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/utils.py", line 162, in list
return list(self.redis.scan_iter(match=prefix))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/commands/core.py", line 3051, in scan_iter
cursor, data = self.scan(
^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/commands/core.py", line 3026, in scan
return self.execute_command("SCAN", *pieces, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/client.py", line 542, in execute_command
conn = self.connection or pool.get_connection(command_name, **options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 1109, in get_connection
connection.connect()
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 282, in connect
raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error 111 connecting to mailu-redis-master.mailu-mailserver.svc.cluster.local:6379. Connection refused.
Environment
- bare metal k8s
- metallb
- nginx ingress
- helm values:
global:
database:
roundcube:
database: roundcube
username: roundcube
commonLabels: {}
commonAnnotations: {}
affinity: {}
imageRegistry: ghcr.io
hostnames:
- "mail.blablabla.com"
domain: "blablabla.com"
secretKey: "************"
timezone: "Europe/Riga"
initialAccount:
enabled: true
username: "admin"
domain: "blablabla.com"
mode: "update"
api:
enabled: false
existingSecretTokenKey: "api-token"
webPath: "/api"
subnet: 10.244.0.0/16
networkPolicy:
enabled: true
ingressController:
namespace: ingress-nginx
podSelector: |
matchLabels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
logLevel: WARNING
postmaster: admin
recipientDelimiter: "+"
dmarc:
rua: "admin"
ruf: "admin"
limits:
messageSizeLimitInMegabytes: 50
authRatelimit:
ip: 60/hour
ipv4Mask: 24
ipv6Mask: 56
user: 100/day
exemptionLength: 86400
messageRatelimit:
value: 200/day
externalRelay:
usernameKey: "relay-username"
passwordKey: "relay-password"
clusterDomain: cluster.local
credentialRounds: 12
sessionCookieSecure: true
authRequireTokens: false
sessionTimeout: 3600
permanentSessionLifetime: 2592000
letsencryptShortchain: false
customization:
siteName: "mail"
website: "https://mail.blablabla.com"
welcomeMessage:
enabled: true
subject: "Welcome to Mailu"
body: "Welcome to Mailu, your new email service. Please change your password and update your profile."
externalDatabase:
enabled: false
port: 3306
database: mailu
username: mailu
existingSecretDatabaseKey: "database"
existingSecretUsernameKey: "username"
existingSecretPasswordKey: "password"
externalRedis:
enabled: false
port: 6379
adminQuotaDbId: 1
adminRateLimitDbId: 2
rspamdDbId: 0
database:
mysql:
postgresql:
persistence:
single_pvc: true
size: 100Gi
accessModes: [ReadWriteOnce]
annotations: {}
existingClaim: "mailu-nfs-pvc-mail"
ingress:
enabled: true
ingressClassName: "nginx"
pathType: ImplementationSpecific
path: /
annotations:
cert-manager.io/cluster-issuerr: "letsencrypt-prod"
tls: true
selfSigned: false
realIpHeader: X-Forwarded-For
proxyProtocol:
pop3: false
pop3s: false
imap: false
imaps: false
smtp: false
smtps: false
submission: false
manageSieve: false
proxyAuth:
header: "X-Auth-Email"
create: "false"
front:
image:
repository: mailu/nginx
pullPolicy: IfNotPresent
hostPort:
enabled: false
externalService:
enabled: true
type: LoadBalancer
externalTrafficPolicy: Local
annotations: {}
ports:
pop3: false
pop3s: true
imap: false
imaps: true
smtp: true
smtps: true
submission: false
manageSieve: true
kind: Deployment
replicaCount: 1
resources:
limits: {}
requests: {}
livenessProbe:
enabled: true
failureThreshold: 3
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
readinessProbe:
enabled: true
failureThreshold: 1
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
startupProbe:
enabled: false
failureThreshold: 30
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 5
podLabels: {}
podAnnotations: {}
nodeSelector: {}
podSecurityContext:
enabled: false
fsGroup: 1001
containerSecurityContext:
enabled: false
runAsUser: 1001
runAsNonRoot: false
terminationGracePeriodSeconds: 2
affinity: {}
revisionHistoryLimit: 3
service:
annotations: {}
updateStrategy:
type: RollingUpdate
admin:
enabled: true
uri: /admin
image:
repository: mailu/admin
pullPolicy: IfNotPresent
persistence:
size: 20Gi
accessModes: [ReadWriteOnce]
annotations: {}
resources:
limits: {}
requests: {}
livenessProbe:
enabled: true
failureThreshold: 3
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
readinessProbe:
enabled: true
failureThreshold: 3
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
startupProbe:
enabled: false
failureThreshold: 3
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
podLabels: {}
podAnnotations: {}
nodeSelector: {}
podSecurityContext:
enabled: false
fsGroup: 1001
containerSecurityContext:
enabled: false
runAsUser: 1001
runAsNonRoot: false
terminationGracePeriodSeconds: 2
affinity: {}
revisionHistoryLimit: 3
service:
annotations: {}
updateStrategy:
type: RollingUpdate
redis:
enabled: true
architecture: standalone
auth:
enabled: false
master:
enabled: true
count: 1
persistence:
enabled: true
size: 8Gi
accessModes: [ReadWriteOnce]
existingClaim: "mailu-nfs-pvc-redis"
annotations: {}
replica:
count: 0
Additional context
Your redis service seems to be restarting / unavailable. Since k8s is about eventual consistency, it could take a while before your redis service becomes available.
If it takes a long time, look in the logs of the redis containers for hints on what could be the issue.
I'm experiencing a similar issue. Were you able to find a solution?
root@uspolodev:~# microk8s kubectl get pods -n mail
NAME READY STATUS RESTARTS AGE
mailu-admin-6cc797dd56-q8sw9 0/1 CrashLoopBackOff 1 (17s ago) 46s
mailu-clamav-0 1/1 Running 0 46s
mailu-dovecot-797cb79599-mf2jr 1/1 Running 0 46s
mailu-front-7b8c8dcd7b-72v8l 1/1 Running 0 46s
mailu-oletools-75d8774797-bck8k 1/1 Running 0 46s
mailu-postfix-6d67467c96-t7p6q 1/1 Running 0 46s
mailu-redis-master-0 1/1 Running 0 46s
mailu-rspamd-cdbb6d8f4-9qq6z 0/1 Running 0 46s
mailu-tika-dfb4ddbc6-zlqwv 1/1 Running 0 46s
mailu-webmail-84f956bc45-4sqzq 0/1 CrashLoopBackOff 2 (15s ago) 46s
root@uspolodev:~# microk8s kubectl logs mailu-admin-6cc797dd56-q8sw9 -n mail
Traceback (most recent call last):
File "/app/venv/bin/gunicorn", line 8, in <module>
sys.exit(run())
^^^^^
File "/app/venv/lib/python3.12/site-packages/gunicorn/app/wsgiapp.py", line 67, in run
WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]", prog=prog).run()
File "/app/venv/lib/python3.12/site-packages/gunicorn/app/base.py", line 236, in run
super().run()
File "/app/venv/lib/python3.12/site-packages/gunicorn/app/base.py", line 72, in run
Arbiter(self).run()
^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/gunicorn/arbiter.py", line 58, in __init__
self.setup(app)
File "/app/venv/lib/python3.12/site-packages/gunicorn/arbiter.py", line 118, in setup
self.app.wsgi()
File "/app/venv/lib/python3.12/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
return self.load_wsgiapp()
^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
return util.import_app(self.app_uri)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/gunicorn/util.py", line 424, in import_app
app = app(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/__init__.py", line 117, in create_app
return create_app_from_config(config)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/__init__.py", line 48, in create_app_from_config
utils.session.init_app(app)
File "/app/mailu/utils.py", line 497, in init_app
MailuSessionExtension.cleanup_sessions(app)
File "/app/mailu/utils.py", line 436, in cleanup_sessions
for key in app.session_store.list():
^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/mailu/utils.py", line 162, in list
return list(self.redis.scan_iter(match=prefix))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/commands/core.py", line 3051, in scan_iter
cursor, data = self.scan(
^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/commands/core.py", line 3026, in scan
return self.execute_command("SCAN", *pieces, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/client.py", line 542, in execute_command
conn = self.connection or pool.get_connection(command_name, **options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 1109, in get_connection
connection.connect()
File "/app/venv/lib/python3.12/site-packages/redis/connection.py", line 282, in connect
raise ConnectionError(self._error_message(e))
redis.exceptions.ConnectionError: Error -5 connecting to mailu-redis-master.mail.svc.cluster.local:6379. Name has no usable address.
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