| .\" Process this file with |
| .\" nroff -man -Tascii docker-attach.1 |
| .\" |
| .TH "DOCKER" "1" "APRIL 2014" "0.1" "Docker" |
| .SH NAME |
| docker-attach \- Attach to a running container |
| .SH SYNOPSIS |
| .B docker attach |
| \fB--no-stdin\fR[=\fIfalse\fR] |
| \fB--sig-proxy\fR[=\fItrue\fR] |
| container |
| .SH DESCRIPTION |
| If you \fBdocker run\fR a container in detached mode (\fB-d\fR), you can reattach to the detached container with \fBdocker attach\fR using the container's ID or name. |
| .sp |
| You can detach from the container again (and leave it running) with CTRL-c (for a quiet exit) or CTRL-\ to get a stacktrace of the Docker client when it quits. When you detach from the container the exit code will be returned to the client. |
| .SH "OPTIONS" |
| .TP |
| .B --no-stdin=\fItrue\fR|\fIfalse\fR: |
| When set to true, do not attach to stdin. The default is \fIfalse\fR. |
| .TP |
| .B --sig-proxy=\fItrue\fR|\fIfalse\fR: |
| When set to true, proxify all received signal to the process (even in non-tty mode). The default is \fItrue\fR. |
| .sp |
| .SH EXAMPLES |
| .sp |
| .PP |
| .B Attaching to a container |
| .TP |
| In this example the top command is run inside a container, from an image called fedora, in detached mode. The ID from the container is passed into the \fBdocker attach\fR command: |
| .sp |
| .nf |
| .RS |
| # ID=$(sudo docker run -d fedora /usr/bin/top -b) |
| # sudo docker attach $ID |
| top - 02:05:52 up 3:05, 0 users, load average: 0.01, 0.02, 0.05 |
| Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie |
| Cpu(s): 0.1%us, 0.2%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st |
| Mem: 373572k total, 355560k used, 18012k free, 27872k buffers |
| Swap: 786428k total, 0k used, 786428k free, 221740k cached |
| |
| PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND |
| 1 root 20 0 17200 1116 912 R 0 0.3 0:00.03 top |
| |
| top - 02:05:55 up 3:05, 0 users, load average: 0.01, 0.02, 0.05 |
| Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie |
| Cpu(s): 0.0%us, 0.2%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st |
| Mem: 373572k total, 355244k used, 18328k free, 27872k buffers |
| Swap: 786428k total, 0k used, 786428k free, 221776k cached |
| |
| PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND |
| 1 root 20 0 17208 1144 932 R 0 0.3 0:00.03 top |
| .RE |
| .fi |
| .sp |
| .SH HISTORY |
| April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on dockier.io source material and internal work. |
