# Addprocs with ssh does not work on 0.6.1
**URL:** https://discourse.julialang.org/t/addprocs-with-ssh-does-not-work-on-0-6-1/7253
**Category:** Julia at Scale
**Created:** [November 22, 2017, 6:32pm UTC](https://discourse.julialang.org/t/addprocs-with-ssh-does-not-work-on-0-6-1/7253 "2017-11-22T18:32:58Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@usefulhyun](https://discourse.julialang.org/u/usefulhyun)
#### Post date: [November 22, 2017, 6:32pm UTC](https://discourse.julialang.org/t/addprocs-with-ssh-does-not-work-on-0-6-1/7253/1 "2017-11-22T18:32:58Z")
Hi, there!
My code works well on 0.6.0.
However, after upgrading it to 0.6.1 addprocs function does not work when I create a process on remote machine.
I tried to add a kwarg `tunnel=true` to be addprocs([“remotehost”]; tunnel=true)
It works if I only add one remote machine.
But I try addprocs([“newremotehost”], tunnel=true), it does not work too…
Here not working means that the Julia only generates error and got stuck.
What have changed on 0.6.1 about addprocs…
---
### Author:  [@Pbellive](https://discourse.julialang.org/u/Pbellive)
#### Post date: [November 23, 2017, 6:36pm UTC](https://discourse.julialang.org/t/addprocs-with-ssh-does-not-work-on-0-6-1/7253/2 "2017-11-23T18:36:24Z")
`addprocs` works for me on 0.6.1. More specifically, I tested it on a linux cluster with the following julia install:
```julia
Julia Version 0.6.1
Commit 0d7248e2ff (2017-10-24 22:15 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: Intel(R) Xeon(R) CPU E5-2687W v2 @ 3.40GHz
WORD_SIZE: 64
BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Sandybridge)
LAPACK: libopenblas64_
LIBM: libopenlibm
LLVM: libLLVM-3.9.1 (ORCJIT, ivybridge)
```
I ran `addprocs(["host1","host2","host3","host1","host2","host3"])` where the hostnames are accessible via `ssh` and everything works as expected. In general I haven’t noticed any regressions running parallel jobs in 0.6.1. What error are you getting? And how exactly are you calling `addprocs`?
---
### Author:  [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [November 23, 2017, 7:15pm UTC](https://discourse.julialang.org/t/addprocs-with-ssh-does-not-work-on-0-6-1/7253/3 "2017-11-23T19:15:09Z")
xref: [https://github.com/JuliaLang/julia/issues/24722](https://github.com/JuliaLang/julia/issues/24722)
---
### Author:  [@usefulhyun](https://discourse.julialang.org/u/usefulhyun)
#### Post date: [November 24, 2017, 7:06am UTC](https://discourse.julialang.org/t/addprocs-with-ssh-does-not-work-on-0-6-1/7253/4 "2017-11-24T07:06:50Z")
My calling is
```julia
addprocs(["ssh_host1"], tunnel=true)
addprocs(["ssh_host2"], tunnel=true)
```
In this case, the second line generates an error message.
And I tried what you said I got an error also as follows:
```julia
try_yieldto(::Base.##296#297{Task}, ::Task) at ./event.jl:189
wait() at ./event.jl:234
wait(::Condition) at ./event.jl:27
stream_wait(::TCPSocket, ::Condition, ::Vararg{Condition,N} where N) at ./stream.jl:42
wait_connected(::TCPSocket) at ./stream.jl:258
connect at ./stream.jl:983 [inlined]
connect_to_worker(::SubString{String}, ::UInt16) at ./distributed/managers.jl:493
connect(::Base.Distributed.SSHManager, ::Int64, ::WorkerConfig) at ./distributed/managers.jl:431
create_worker(::Base.Distributed.SSHManager, ::WorkerConfig) at ./distributed/cluster.jl:443
setup_launched_worker(::Base.Distributed.SSHManager, ::WorkerConfig, ::Array{Int64,1}) at ./distributed/cluster.jl:389
(::Base.Distributed.##33#36{Base.Distributed.SSHManager,WorkerConfig,Array{Int64,1}})() at ./task.jl:335
...and 1 more exception(s).
Stacktrace:
[1] sync_end() at ./task.jl:287
[2] macro expansion at ./task.jl:303 [inlined]
[3] #addprocs_locked#30(::Array{Any,1}, ::Function, ::Base.Distributed.SSHManager) at ./distributed/cluster.jl:344
[4] (::Base.Distributed.#kw##addprocs_locked)(::Array{Any,1}, ::Base.Distributed.#addprocs_locked, ::Base.Distributed.SSHManager) at ./:0
[5] #addprocs#29(::Array{Any,1}, ::Function, ::Base.Distributed.SSHManager) at ./distributed/cluster.jl:319
[6] (::Base.Distributed.#kw##addprocs)(::Array{Any,1}, ::Base.Distributed.#addprocs, ::Base.Distributed.SSHManager) at ./:0
[7] #addprocs#239(::Bool, ::Cmd, ::Int64, ::Array{Any,1}, ::Function, ::Array{String,1}) at ./distributed/managers.jl:114
[8] addprocs(::Array{String,1}) at ./distributed/managers.jl:113
```