Selfhosted

61512 readers

1350 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Detailed Rules Post

Be civil.
No spam.
Posts are to be related to self-hosting.
Don't duplicate the full text of your blog or readme if you're providing a link.
Submission headline should match the article title.
No trolling.
Promotion posts require active participation, with an account that is at least 30 days old. F/LOSS without a paywall has exceptions, with requirements. See the rules link for details. Tags [CBH] or [AIP] are required, see the links in Rule 8 for details.
AI-related discussions and AI-involved promotional posts have additional requirements for tagging, as noted in Rule 7 and the AI & Promotional Post Expanded Rules post, and find example disclosures here.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 3 years ago

MODERATORS

curbstickle@anarchist.nexus

curbstickle_lw@lemmy.world

Why mount /etc/timezone and /etc/localtime in containers? (lemmy.world)

submitted 2 years ago by talkingpumpkin@lemmy.world to c/selfhosted@lemmy.world

5 comments fedilink hide all child comments

A lot of selfhosted containers instructions contain volume mounts like:

docker run ...
  -v /etc/timezone:/etc/timezone:ro \
  -v /etc/localtime:/etc/localtime:ro \
  ...

but all the times I tried to skip those mounts everything seemed to work perfectly.

Are those mounts only necessary in specific cases?

PS:

Bonus question: other containers instructions say to define the TZ variable. Is that only needed when one wants a container to use a different timezone than the host?

you are viewing a single comment's thread
view the rest of the comments

[–] Coelacanthus@lemmy.kde.social 3 points 2 years ago

Without it, the program just fallback to UTC. /etc/localtime and $TZ are two ways to specify timezone for programs. The program look up the later first, if it's empty and then use /etc/localtime. In theory, $TZ has better performance because of the glibc will not look up the last modified time of /etc/localtime when every calling of localtime lookup.