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README
⭕ immortal
A *nix cross-platform (OS agnostic) supervisor
Linux precompiled binaries
run on behalf other system user
If services need to run on behalf other system user www, nobody, www-data,
not root, immortal should be compiled from source for the desired
target/architecture, otherwise, this error may be returned:
Error looking up user: "www". user: Lookup requires cgo
See more: https://golang.org/cmd/cgo/
If using FreeBSD or macOS you can install using pkg/ports or homebrew, for other platforms work is in progress, any help for making the port/package for other systems would be appreciated.
Compile from source
Setup go environment https://golang.org/doc/install
go >= 1.12 is required
For example using $HOME/go for your workspace
$ export GOPATH=$HOME/go
Create the directory:
$ mkdir -p $HOME/go/src/github.com/immortal
Clone project into that directory:
$ git clone git@github.com:immortal/immortal.git $HOME/go/src/github.com/immortal/immortal
Build by just typing make:
$ cd $HOME/go/src/github.com/immortal/immortal
$ make
To install/uninstall:
$ make install
$ make uninstall
configuration example
Content of file /usr/local/etc/immortal/www.yml:
# pkg install go-www
cmd: www
cwd: /usr/ports
log:
file: /var/log/www.log
age: 10 # seconds
num: 7 # int
size: 1 # MegaBytes
wait: 1
require:
- foo
- bar
If foo and bar are not running, the service www will not be started. Skip age, num & size options to avoid log-rotation completely.
fooandbarare the names for the services defined on the same path www.yaml is located, foo.yml & bar.yml
Paths
When using immortaldir:
/usr/local/etc/immortal
|--foo.yml
|--bar.yml
`--www.yml
The name of the file.yml will be used to reference the service to be
daemonized excluding the extension .yml.:
foo
bar
www
/var/run/immortal/
/var/run/immortal
|--foo
| |-lock
| `-immortal.sock
|--bar
| |-lock
| `-immortal.sock
`--www
|-lock
`-immortal.sock
immortal like non-root user
Any service launched like not using using immortaldir will follow this
structure:
~/.immortal
|--(pid)
| |--lock
| `--immortal.sock
|--(pid)
| |--lock
| `--immortal.sock
`--(pid)
|--lock
`--immortal.sock
immortalctl
Will print current status and allow to manage the services
debug
pgrep -fl "immortal -ctl" | awk '{print $1}' | xargs watch -n .1 pstree -p
Test status using curl & jq
status:
curl --unix-socket immortal.sock http:/status -s | jq
note the single '/' https://superuser.com/a/925610/284722
down:
curl --unix-socket immortal.sock http://im/signal/d -s | jq
up:
curl --unix-socket immortal.sock http://im/signal/u -s | jq