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serviceclickhouse
Sheldon
Sheldon

Reputation: 4643

What does it mean to have a "masked" clickhouse-server?

I am new to clickhouse. After several unfruitful attempts to install version 18.16.1, I purged both clickhouse-server and clickhouse-client (sudo dpkg --purge clickhouse-server and sudo dpkg --purge clickhouse-common).

After I made sure that sudo apt --fix-broken install did not return any error message, I went over and installed both the client and server using apt: sudo apt install clickhouse-server clickhouse-client.

Upon installation I received the following warning:

dpkg: warning: clickhouse-server: conffile '/etc/systemd/system/clickhouse-server.service' is not a plain file or symlink (= '/dev/null')

Trying service clickhouse-server status returned:

● clickhouse-server.service Loaded: masked (Reason: Unit clickhouse-server.service is masked.) Active: inactive (dead)

What does it mean to have a masked service? I found this post on AskUbuntu, but it seems specific to PostgreSQL. Am I OK to implement the solution provided in there to "unmask" the clickhouse service?

Upvotes: 0

Views: 762

Answers (2)

hashkeeperok
hashkeeperok

Reputation: 1

Denny Crane was right.

You need to run the following commands

systemctl unmask clickhouse-server
systemctl start clickhouse-server

Upvotes: 0

Denny Crane
Denny Crane

Reputation: 13310

Not related to CH. Related to https://en.wikipedia.org/wiki/Systemd.

https://medium.com/@codingmaths/service-masking-in-linux-f7265d9b2181

mask is a stronger version of disable. Using disable all symlinks of the specified unit file are removed....

Upvotes: 0

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