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I have a centos 8 server with nginx and certbot installed. When I check:

cat /var/log/nginx/error.log

I get this error a lot:

[alert] 2245236#0: *42902735 could not allocate new session in SSL session shared cache "le_nginx_SSL" while SSL handshaking, client: ip, server: ip

Would you know how to fix this issue?

Thank you.

nlegall
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Adrien Parad
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1 Answers1

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I had the same issued and solved it by increasing the cache size:

ssl_session_cache shared: le_nginx_SSL:20m; # before 10m

You can try to reduce ssl_session_timeoutto delete quicker the sessions.

reference: http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache

nlegall
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