How to pass sysctl param containing a space

[soualid]

I'd like to set a sysctl param containing space using HAPROXY_SYSCTL_PARAMS, eg:

sysctl -w net.ipv4.ip_local_port_range="1000 65535"

But I cannot achieve this, no matter how I escape the environment variable, it ends with an error at startup like:

[/marathon-lb /marathon-lb/run] setting sysctl params to: net.ipv4.ip_local_port_range="1000 65535" fs.file-max=10000000 fs.nr_open=10000000 net.ipv4.tcp_tw_reuse=1 net.ipv4.tcp_fin_timeout=30 net.ipv4.tcp_max_syn_backlog=10240 net.ipv4.tcp_max_tw_buckets=400000 net.ipv4.tcp_max_orphans=60000 net.core.somaxconn=65535 net.core.netdev_max_backlog=65536
net.ipv4.ip_local_port_range = \"1000
sysctl: setting key "net.ipv4.ip_local_port_range": Invalid argument
sysctl: "65535\"" must be of the form name=value

It seems that the quote are badly escaped at runtime, already tried the following:

net.ipv4.ip_local_port_range=1000 65535
net.ipv4.ip_local_port_range="1000 65535"
net.ipv4.ip_local_port_range=\"1000 65535\"
net.ipv4.ip_local_port_range=\\\"1000 65535\\\"

Is it possible to pass such parameters through environment variable or should I customize the docker image to execute this script at startup?

Many thanks in advance.

[jkoelker]

The best way at the moment is to customize the image. The issue is that the env var is passed as a whole to sysctl in the run script, ideally it would write out a conf file and then use that to get around the bash mangling.

[soualid]

Thanks!