restart service, check if service is ready to accept connection because it
takes time to come up. Once we sure its listening on port then only move to
next host. unless dont move because we can only afford to have one service
down at a time.
is there any to short hand or ansible native way to handle this using
ansible module.
code:
name: Restart zookeeper followers
throttle: 1
any_errors_fatal: true
shell: |
systemctl restart {{zookeeper_service_name}}
timeout 22 sh -c 'until nc localhost {{zookeeper_server_port}}; do
sleep 1; done'
when: not zkmode.stdout_lines is search('leader')
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