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14 lines
656 B
Bash
Executable File
14 lines
656 B
Bash
Executable File
#!/bin/bash
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# More than 500 container seems to result in a lot of sporadic failures, probably due to Linux kernel scaling issues with virtual network ports
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# 250 with a 16GB RAM VM like Amazon m4.xlarge seems good
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NUM_CONTAINERS=250
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CONTAINER_IMAGE=zerotier/http-test
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SCALE_UP_DELAY=10
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export PATH=/bin:/usr/bin:/usr/local/bin:/usr/sbin:/sbin
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pssh -h big-test-hosts -x '-t -t' -i -OUserKnownHostsFile=/dev/null -OStrictHostKeyChecking=no -t 0 -p 256 "sudo sysctl -w net.netfilter.nf_conntrack_max=262144 ; for ((n=0;n<$NUM_CONTAINERS;n++)); do sudo docker run --device=/dev/net/tun --privileged -d $CONTAINER_IMAGE; sleep $SCALE_UP_DELAY; done"
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exit 0
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