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68 lines
1.8 KiB
Bash
68 lines
1.8 KiB
Bash
2 years ago
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#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2022-08-11 14:44:05 +0100 (Thu, 11 Aug 2022)
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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1 year ago
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# shellcheck disable=SC1090,SC1091
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2 years ago
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. "$srcdir/lib/utils.sh"
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1 year ago
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# shellcheck disable=SC1090,SC1091
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2 years ago
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. "$srcdir/lib/kubernetes.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Tails logs from several pods a the same time in the current or given namespace
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Useful for debugging and quickly checking which components in a distributed app are having issues
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Can optionally specify an ERE regex filter on the pod name
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Requires kubectl to be installed and configured
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<namespace> <filter>]"
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namespace="${1:-}"
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filter="${2:-}"
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kube_config_isolate
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if [ -n "$namespace" ]; then
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kube_namespace "$namespace"
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fi
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# kill all child processes by session id on cleanup, which is less likely to be changed than parent id
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if is_mac; then
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# want late evaluation
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# shellcheck disable=SC2016
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trap_cmd 'kill $(ps -g $$ -o pid=) 2>/dev/null'
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else
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# shellcheck disable=SC2016
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trap_cmd 'kill $(ps -s $$ -o pid=) 2>/dev/null'
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fi
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# avoiding subshell pipe into while loop otherwise 'wait' below won't wait
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while read -r pod_name; do
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# pod_name is like pod/argocd-server-7558b87667-4fmx7
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# and can be passed to kubectl as is
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kubectl logs --tail 10 -f "$pod_name" --all-containers=true &
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done < <( kubectl get pods -o name | grep -E "$filter" || : )
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wait
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