# Qstat: cannot connect to server amaster (errno=113)

**URL:** <https://community.openpbs.org/t/qstat-cannot-connect-to-server-amaster-errno-113/1900>\
**Category:** Users/Site Administrators\
**Created:** [December 11, 2019, 7:30am UTC](https://community.openpbs.org/t/qstat-cannot-connect-to-server-amaster-errno-113/1900 "2019-12-11T07:30:10Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\
**Post date:** [December 12, 2019, 11:31am UTC](https://community.openpbs.org/t/qstat-cannot-connect-to-server-amaster-errno-113/1900/2 "2019-12-12T11:31:54Z")

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Please check

1. your DNS and /etc/hosts for the name resolution of “amaster”
2. firewall settings ( 15001 to 15009 and 17001 should be open between server/computenodes)
3. SELinux disabled and system rebooted
4. check and share this command output pbs\_hostn -v amaster
5. /etc/hosts should be the same both on the server and compute nodes

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_[View the full topic](https://community.openpbs.org/t/qstat-cannot-connect-to-server-amaster-errno-113/1900)._