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, -. Infrastructure & Operations, IO. -. .
Stack, , . Kubernetes, Golang, Python, Bash. Elasticsearch, Cassandra , , Postgres, , .
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. . . PHP, Python Java Scala. Golang, Node.js , FrontEnd.
Postgres. MySQL, Mongo, , Postgres.
DevOps, , . . , . , Postgres. Postgres, , .
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: infrastructure as code, , . . Ansible. - Python Bash .
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Gitlab, , Gitlab, continuous integration, continuous delivery. . . «deploy» .
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PostgreSQL
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DNS round robin, . . , , .
keepalive PgBouncer. pooler, . , . . . Pgpool. , , , , slave.
, , , . Pgpool . . , , – , , . . . , read only . , .
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, , Pgpool slave. , slave .
real only . . . , , .
, . , . . PgBouncer HAProxy, , slave round robin .
pooling , . . Hikari Pool. , , . .
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Barman.
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- exporters Golang, Python, Bash.
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alerts. Alerts Prometheus AlertManager.
alerts, . . . , failover, failover , failover . . alerts, , Slack, : «, !».
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Pgbadger. , , , slow . , . Perl. , . Kubernetes. Kubernetes. LogStash. LogStash HTTP Pgbadger , . , , .
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Ansible. . . . testing, production staging. staging production, . , Ansible . - testing, - , environments, , «deploy». .
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Ubuntu Linux , . , , apt. , , - , , .
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bootstrap . . . , , , . , . . . . .
Git-, , Gitlab.
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OpenStack. . , . Openstack API Ansible, OpenStack, heat-api, . . - , , heat-api . . . : « . ». , . . OpenStack . .
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