packet_write_wait: Broken Pipe error on MacOS Sierra SSH











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I keep getting a packet_write_wait: Broken Pipe error on my EC2 SSH connections after a period of inactivity.



I've tried modifying the ServerAliveInterval & ClientAliveInterval settings with different values ranging from 5 to 120. I've also tried changing the TCPKeepAlive setting to no or yes. I've tried applying these settings to the config at /etc/ssh/sshd_config and ~/.ssh/config (I've tried these in a Host * block and a Host SERVER.COM block.)



Yet, I keep getting disconnected with a packet_write_wait: Broken Pipe error. How do I correct this issue?






macos ssh







share|improve this question






















  • Not on Sierra but the settings mentioned helped me on El Capitan. I just experienced this again when we had some ghost VMs running: two VMs with the same IP. So I would be able to connect to the VM and then it kicked me out. Sometimes I could not connect as it complained that the host keys changed. And when I successfully sshed into it it would kick me out very fast. Is this happening to you on all machines you connect to? Did it start immediately after the Sierra upgrade? Can you see if it happens if you ping the machine from another terminal window? Have you checked the logs on the server?
    – Zina
    Oct 21 '16 at 20:06










  • I had looked up the issue on my previous mac (8-core Xeon) and solved the problem on El Capitan. Then, I just recently upgraded to a new 4ghz 5k iMac with Sierra. Now, the problem is back and I'm not exactly sure how I solved this the last time around. I do remember having to try a few different settings and needing to log out / log back in or restart the SSH to get the settings to take. The client machine hasn't changed so these issues should be all Mac-related. Which log file might I want to check?
    – arby
    Oct 21 '16 at 20:36








  • 1




    My changes were made on the client machine (with this I mean my Macbook Pro - as ssh client who connects to an server through ssh). I did not change anything on the server side (sshd config - for which a service restart is needed if changed). I checked some of my servers and the TCPKeepAlive setting is default (not changed) and Yes. On my client side i have added the TCPKeepAlive Yes and ServerAliveInterval 120 - which helped me to get rid of the kicking out.
    – Zina
    Oct 21 '16 at 20:47










  • Ah, I misspoke -- my server machine hasn't changed. Hmm, I currently have the TCPKeepAlive set to Yes and ServerAliveInterval set to 120 on both /etc/ssh/sshd_config & ~/.ssh/config Maybe there's a command to have SSH apply these settings?
    – arby
    Oct 21 '16 at 21:06












  • if you ssh -vvv <username>@<servername> you should see in the ouput which lines were used by your client connection. On the server side a service ssh restart or service sshd restart (depending on OS) will read and apply the sshd settings.
    – Zina
    Oct 21 '16 at 21:20















up vote
3
down vote

favorite












I keep getting a packet_write_wait: Broken Pipe error on my EC2 SSH connections after a period of inactivity.



I've tried modifying the ServerAliveInterval & ClientAliveInterval settings with different values ranging from 5 to 120. I've also tried changing the TCPKeepAlive setting to no or yes. I've tried applying these settings to the config at /etc/ssh/sshd_config and ~/.ssh/config (I've tried these in a Host * block and a Host SERVER.COM block.)



Yet, I keep getting disconnected with a packet_write_wait: Broken Pipe error. How do I correct this issue?






macos ssh







share|improve this question






















  • Not on Sierra but the settings mentioned helped me on El Capitan. I just experienced this again when we had some ghost VMs running: two VMs with the same IP. So I would be able to connect to the VM and then it kicked me out. Sometimes I could not connect as it complained that the host keys changed. And when I successfully sshed into it it would kick me out very fast. Is this happening to you on all machines you connect to? Did it start immediately after the Sierra upgrade? Can you see if it happens if you ping the machine from another terminal window? Have you checked the logs on the server?
    – Zina
    Oct 21 '16 at 20:06










  • I had looked up the issue on my previous mac (8-core Xeon) and solved the problem on El Capitan. Then, I just recently upgraded to a new 4ghz 5k iMac with Sierra. Now, the problem is back and I'm not exactly sure how I solved this the last time around. I do remember having to try a few different settings and needing to log out / log back in or restart the SSH to get the settings to take. The client machine hasn't changed so these issues should be all Mac-related. Which log file might I want to check?
    – arby
    Oct 21 '16 at 20:36








  • 1




    My changes were made on the client machine (with this I mean my Macbook Pro - as ssh client who connects to an server through ssh). I did not change anything on the server side (sshd config - for which a service restart is needed if changed). I checked some of my servers and the TCPKeepAlive setting is default (not changed) and Yes. On my client side i have added the TCPKeepAlive Yes and ServerAliveInterval 120 - which helped me to get rid of the kicking out.
    – Zina
    Oct 21 '16 at 20:47










  • Ah, I misspoke -- my server machine hasn't changed. Hmm, I currently have the TCPKeepAlive set to Yes and ServerAliveInterval set to 120 on both /etc/ssh/sshd_config & ~/.ssh/config Maybe there's a command to have SSH apply these settings?
    – arby
    Oct 21 '16 at 21:06












  • if you ssh -vvv <username>@<servername> you should see in the ouput which lines were used by your client connection. On the server side a service ssh restart or service sshd restart (depending on OS) will read and apply the sshd settings.
    – Zina
    Oct 21 '16 at 21:20













up vote
3
down vote

favorite









up vote
3
down vote

favorite











I keep getting a packet_write_wait: Broken Pipe error on my EC2 SSH connections after a period of inactivity.



I've tried modifying the ServerAliveInterval & ClientAliveInterval settings with different values ranging from 5 to 120. I've also tried changing the TCPKeepAlive setting to no or yes. I've tried applying these settings to the config at /etc/ssh/sshd_config and ~/.ssh/config (I've tried these in a Host * block and a Host SERVER.COM block.)



Yet, I keep getting disconnected with a packet_write_wait: Broken Pipe error. How do I correct this issue?






macos ssh







share|improve this question













I keep getting a packet_write_wait: Broken Pipe error on my EC2 SSH connections after a period of inactivity.



I've tried modifying the ServerAliveInterval & ClientAliveInterval settings with different values ranging from 5 to 120. I've also tried changing the TCPKeepAlive setting to no or yes. I've tried applying these settings to the config at /etc/ssh/sshd_config and ~/.ssh/config (I've tried these in a Host * block and a Host SERVER.COM block.)



Yet, I keep getting disconnected with a packet_write_wait: Broken Pipe error. How do I correct this issue?






macos ssh




macos ssh






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Oct 21 '16 at 19:48









arby

12528




12528












  • Not on Sierra but the settings mentioned helped me on El Capitan. I just experienced this again when we had some ghost VMs running: two VMs with the same IP. So I would be able to connect to the VM and then it kicked me out. Sometimes I could not connect as it complained that the host keys changed. And when I successfully sshed into it it would kick me out very fast. Is this happening to you on all machines you connect to? Did it start immediately after the Sierra upgrade? Can you see if it happens if you ping the machine from another terminal window? Have you checked the logs on the server?
    – Zina
    Oct 21 '16 at 20:06










  • I had looked up the issue on my previous mac (8-core Xeon) and solved the problem on El Capitan. Then, I just recently upgraded to a new 4ghz 5k iMac with Sierra. Now, the problem is back and I'm not exactly sure how I solved this the last time around. I do remember having to try a few different settings and needing to log out / log back in or restart the SSH to get the settings to take. The client machine hasn't changed so these issues should be all Mac-related. Which log file might I want to check?
    – arby
    Oct 21 '16 at 20:36








  • 1




    My changes were made on the client machine (with this I mean my Macbook Pro - as ssh client who connects to an server through ssh). I did not change anything on the server side (sshd config - for which a service restart is needed if changed). I checked some of my servers and the TCPKeepAlive setting is default (not changed) and Yes. On my client side i have added the TCPKeepAlive Yes and ServerAliveInterval 120 - which helped me to get rid of the kicking out.
    – Zina
    Oct 21 '16 at 20:47










  • Ah, I misspoke -- my server machine hasn't changed. Hmm, I currently have the TCPKeepAlive set to Yes and ServerAliveInterval set to 120 on both /etc/ssh/sshd_config & ~/.ssh/config Maybe there's a command to have SSH apply these settings?
    – arby
    Oct 21 '16 at 21:06












  • if you ssh -vvv <username>@<servername> you should see in the ouput which lines were used by your client connection. On the server side a service ssh restart or service sshd restart (depending on OS) will read and apply the sshd settings.
    – Zina
    Oct 21 '16 at 21:20


















  • Not on Sierra but the settings mentioned helped me on El Capitan. I just experienced this again when we had some ghost VMs running: two VMs with the same IP. So I would be able to connect to the VM and then it kicked me out. Sometimes I could not connect as it complained that the host keys changed. And when I successfully sshed into it it would kick me out very fast. Is this happening to you on all machines you connect to? Did it start immediately after the Sierra upgrade? Can you see if it happens if you ping the machine from another terminal window? Have you checked the logs on the server?
    – Zina
    Oct 21 '16 at 20:06










  • I had looked up the issue on my previous mac (8-core Xeon) and solved the problem on El Capitan. Then, I just recently upgraded to a new 4ghz 5k iMac with Sierra. Now, the problem is back and I'm not exactly sure how I solved this the last time around. I do remember having to try a few different settings and needing to log out / log back in or restart the SSH to get the settings to take. The client machine hasn't changed so these issues should be all Mac-related. Which log file might I want to check?
    – arby
    Oct 21 '16 at 20:36








  • 1




    My changes were made on the client machine (with this I mean my Macbook Pro - as ssh client who connects to an server through ssh). I did not change anything on the server side (sshd config - for which a service restart is needed if changed). I checked some of my servers and the TCPKeepAlive setting is default (not changed) and Yes. On my client side i have added the TCPKeepAlive Yes and ServerAliveInterval 120 - which helped me to get rid of the kicking out.
    – Zina
    Oct 21 '16 at 20:47










  • Ah, I misspoke -- my server machine hasn't changed. Hmm, I currently have the TCPKeepAlive set to Yes and ServerAliveInterval set to 120 on both /etc/ssh/sshd_config & ~/.ssh/config Maybe there's a command to have SSH apply these settings?
    – arby
    Oct 21 '16 at 21:06












  • if you ssh -vvv <username>@<servername> you should see in the ouput which lines were used by your client connection. On the server side a service ssh restart or service sshd restart (depending on OS) will read and apply the sshd settings.
    – Zina
    Oct 21 '16 at 21:20
















Not on Sierra but the settings mentioned helped me on El Capitan. I just experienced this again when we had some ghost VMs running: two VMs with the same IP. So I would be able to connect to the VM and then it kicked me out. Sometimes I could not connect as it complained that the host keys changed. And when I successfully sshed into it it would kick me out very fast. Is this happening to you on all machines you connect to? Did it start immediately after the Sierra upgrade? Can you see if it happens if you ping the machine from another terminal window? Have you checked the logs on the server?
– Zina
Oct 21 '16 at 20:06




Not on Sierra but the settings mentioned helped me on El Capitan. I just experienced this again when we had some ghost VMs running: two VMs with the same IP. So I would be able to connect to the VM and then it kicked me out. Sometimes I could not connect as it complained that the host keys changed. And when I successfully sshed into it it would kick me out very fast. Is this happening to you on all machines you connect to? Did it start immediately after the Sierra upgrade? Can you see if it happens if you ping the machine from another terminal window? Have you checked the logs on the server?
– Zina
Oct 21 '16 at 20:06












I had looked up the issue on my previous mac (8-core Xeon) and solved the problem on El Capitan. Then, I just recently upgraded to a new 4ghz 5k iMac with Sierra. Now, the problem is back and I'm not exactly sure how I solved this the last time around. I do remember having to try a few different settings and needing to log out / log back in or restart the SSH to get the settings to take. The client machine hasn't changed so these issues should be all Mac-related. Which log file might I want to check?
– arby
Oct 21 '16 at 20:36






I had looked up the issue on my previous mac (8-core Xeon) and solved the problem on El Capitan. Then, I just recently upgraded to a new 4ghz 5k iMac with Sierra. Now, the problem is back and I'm not exactly sure how I solved this the last time around. I do remember having to try a few different settings and needing to log out / log back in or restart the SSH to get the settings to take. The client machine hasn't changed so these issues should be all Mac-related. Which log file might I want to check?
– arby
Oct 21 '16 at 20:36






1




1




My changes were made on the client machine (with this I mean my Macbook Pro - as ssh client who connects to an server through ssh). I did not change anything on the server side (sshd config - for which a service restart is needed if changed). I checked some of my servers and the TCPKeepAlive setting is default (not changed) and Yes. On my client side i have added the TCPKeepAlive Yes and ServerAliveInterval 120 - which helped me to get rid of the kicking out.
– Zina
Oct 21 '16 at 20:47




My changes were made on the client machine (with this I mean my Macbook Pro - as ssh client who connects to an server through ssh). I did not change anything on the server side (sshd config - for which a service restart is needed if changed). I checked some of my servers and the TCPKeepAlive setting is default (not changed) and Yes. On my client side i have added the TCPKeepAlive Yes and ServerAliveInterval 120 - which helped me to get rid of the kicking out.
– Zina
Oct 21 '16 at 20:47












Ah, I misspoke -- my server machine hasn't changed. Hmm, I currently have the TCPKeepAlive set to Yes and ServerAliveInterval set to 120 on both /etc/ssh/sshd_config & ~/.ssh/config Maybe there's a command to have SSH apply these settings?
– arby
Oct 21 '16 at 21:06






Ah, I misspoke -- my server machine hasn't changed. Hmm, I currently have the TCPKeepAlive set to Yes and ServerAliveInterval set to 120 on both /etc/ssh/sshd_config & ~/.ssh/config Maybe there's a command to have SSH apply these settings?
– arby
Oct 21 '16 at 21:06














if you ssh -vvv <username>@<servername> you should see in the ouput which lines were used by your client connection. On the server side a service ssh restart or service sshd restart (depending on OS) will read and apply the sshd settings.
– Zina
Oct 21 '16 at 21:20




if you ssh -vvv <username>@<servername> you should see in the ouput which lines were used by your client connection. On the server side a service ssh restart or service sshd restart (depending on OS) will read and apply the sshd settings.
– Zina
Oct 21 '16 at 21:20










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add "IPQoS throughput" to ssh_config in you mac






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    Welcome to Super User! Can you explain what the above suggestion does?
    – bertieb
    Nov 26 at 11:56











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1 Answer
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active

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1 Answer
1






active

oldest

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active

oldest

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active

oldest

votes








up vote
1
down vote













add "IPQoS throughput" to ssh_config in you mac






share|improve this answer

















  • 1




    Welcome to Super User! Can you explain what the above suggestion does?
    – bertieb
    Nov 26 at 11:56















up vote
1
down vote













add "IPQoS throughput" to ssh_config in you mac






share|improve this answer

















  • 1




    Welcome to Super User! Can you explain what the above suggestion does?
    – bertieb
    Nov 26 at 11:56













up vote
1
down vote










up vote
1
down vote









add "IPQoS throughput" to ssh_config in you mac






share|improve this answer












add "IPQoS throughput" to ssh_config in you mac







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 26 at 8:50









D.Wang

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111








  • 1




    Welcome to Super User! Can you explain what the above suggestion does?
    – bertieb
    Nov 26 at 11:56














  • 1




    Welcome to Super User! Can you explain what the above suggestion does?
    – bertieb
    Nov 26 at 11:56








1




1




Welcome to Super User! Can you explain what the above suggestion does?
– bertieb
Nov 26 at 11:56




Welcome to Super User! Can you explain what the above suggestion does?
– bertieb
Nov 26 at 11:56


















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