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Increase cert lock time #47

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merged 1 commit into from Aug 9, 2021
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kfigiela
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@kfigiela kfigiela commented Aug 9, 2021

There is a bug related when multiple instances of openresty are running (e.g. behind network load balancer). In such case, two instances may start certificate renewal at the same time (close enough). As indicated in #40 (comment)

Note, there is race condition between server instances as they all attempt renewals simultaneously. It causes some warning messages (and let's encrypt complaining about buggy client). You should increase lock expiration time as in this commit kfigiela/lua-resty-acme@65b3451

This PR workarounds the issue by increasing lock TTL.

@fffonion fffonion merged commit efb0602 into fffonion:master Aug 9, 2021
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fffonion commented Aug 9, 2021

Thanks @kfigiela !

bungle added a commit to Kong/kong that referenced this pull request Sep 29, 2021
### Summary

#### bug fixes
- ***:** use a standarlized log interface [0ff01bd](fffonion/lua-resty-acme@0ff01bd)
- **autossl:** release update_lock after cert is created to allow multiple type of certs for same domain to be created within short time [e315070](fffonion/lua-resty-acme@e315070)
- **autossl:** increase cert lock time ([#47](fffonion/lua-resty-acme#47)) [efb0602](fffonion/lua-resty-acme@efb0602)
- **tls-alpn-01:** set version 3 in certificate generated ([#49](fffonion/lua-resty-acme#49)) [887cad8](fffonion/lua-resty-acme@887cad8)
bungle added a commit to Kong/kong that referenced this pull request Sep 29, 2021
### Summary

#### bug fixes
- ***:** use a standarlized log interface [0ff01bd](fffonion/lua-resty-acme@0ff01bd)
- **autossl:** release update_lock after cert is created to allow multiple type of certs for same domain to be created within short time [e315070](fffonion/lua-resty-acme@e315070)
- **autossl:** increase cert lock time ([#47](fffonion/lua-resty-acme#47)) [efb0602](fffonion/lua-resty-acme@efb0602)
- **tls-alpn-01:** set version 3 in certificate generated ([#49](fffonion/lua-resty-acme#49)) [887cad8](fffonion/lua-resty-acme@887cad8)
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2 participants