On 20/09/2022 20:52, Pintér Szabolcs wrote:
Hi squid community, I need to find most best and sustainable way to build a stable High Availability squid cluster/solution for abou 40k user. Parameters: I need HA, caching(little objects only not like big windows updates), scaling(It is just secondly), and I want to use and modify(in production,in working hours) complex black- and whitelists [snip]
To modify the Squid config in production during working hours is a requirement that needs careful thought since the web proxy is unavailable when it reloads its configuration. HA can resolved this with 1. change config squid node 1 2. load balancer stops new connections to node 1 3. wait X minutes, maybe 15 minutes, for most connections to node 1 to disappear 4. reload the config on node 1 - existing connections are closed 5. wait until Squid on node 1 is operational again 6. load balancer allows new connections to node 1 and stops new connections to node 2 7. change config squid node 2 8. wait X minutes, maybe 15 minutes, for most connections to node 2 to disappear 9. reload the config on node 2 - existing connections are closed 10. wait until Squid on node 2 is operational again 11. load balancer allows new connections to node 2 Depending on what your requirements are, you may consider using ufdbGuard for Squid since ufdbGuard can reload its configuration without interrupting clients of the web proxy. Marcus _______________________________________________ squid-users mailing list squid-users@lists.squid-cache.org http://lists.squid-cache.org/listinfo/squid-users
