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This allows straight-forward configuration of realm-based Tornado sharding through simply editing /etc/zulip/zulip.conf to configure shards and running scripts/refresh-sharding-and-restart. Co-Author-By: Mateusz Mandera <mateusz.mandera@zulip.com>
30 lines
1.4 KiB
Bash
Executable File
30 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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"$(dirname "$0")/zulip-puppet-apply" -f
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# The step above should have generated the config files, now we need to move them into place:
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chown root:root /etc/zulip/nginx_sharding.conf.tmp
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chmod 640 /etc/zulip/nginx_sharding.conf.tmp
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chown zulip:zulip /etc/zulip/sharding.json.tmp
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chmod 640 /etc/zulip/sharding.json.tmp
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mv /etc/zulip/nginx_sharding.conf.tmp /etc/zulip/nginx_sharding.conf
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mv /etc/zulip/sharding.json.tmp /etc/zulip/sharding.json
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# In the ordering of operations below, the crucial detail is that
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# zulip-django and zulip-workers:* need to be restarted before
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# reloading nginx. Django has an in-memory map of which realm belongs
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# to which shard. Reloading nginx will cause users' tornado requests
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# to be routed according to the new sharding scheme. If that happens
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# before Django is restarted, updating its realm->shard map, users on
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# realms, whose shard has changed, will have their tornado requests
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# handled by the new tornado process, while Django will still use the
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# old process for its internal communication with tornado when
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# servicing the user's requests. That's a bad state that leads to
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# clients getting into reload loops ending in crashing on 500 response
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# while Django is restarting. For this reason it's important to
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# reload nginx only after Django.
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supervisorctl restart zulip-django
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supervisorctl restart zulip-workers:*
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service nginx reload
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